WorldWideScience

Sample records for aeronautics

  1. [Exploring Aeronautics

    Science.gov (United States)

    Robinson, Brandi

    2004-01-01

    This summer I have been working with the N.A.S.A. Project at Cuyahoga Community College (Tri-C) under the title of Exploring Aeronautics Project Leader. The class that I have worked with is comprised of students that will enter the eighth grade in the fall of 2004. The program primarily focuses upon math proficiency and individualized class projects. My duties have encompassed both realms. During the first 2-3 weeks of my internship, I worked at NASA Glenn Research Center (GRC) researching, organizing, and compiling information for weekly Scholastic Challenges and the Super Scholastic Challenge. I was able to complete an overview of Scholastic Challenge and staff responsibilities regarding the competition; a proposal for an interactive learning system, Quizdom; a schedule for challenge equipment, as well as a schedule listing submission deadlines for the staff. Also included in my tasks, during these first 2-3 weeks, were assisting Tammy Allen and Candice Thomas with the student application review and interview processes for student applicants. For the student and parent orientation, I was assigned publications and other varying tasks to complete before the start of the program. Upon the commencement of the program, I changed location from NASA GRC to Tri-C Metro Campus, where student classes for the Cleveland site are held. During the duration of the program, I work with the instructor for the Exploring Aeronautics class, kkkk, assisting in classroom management, daily attendance, curriculum, project building, and other tasks as needed. These tasks include the conducting of the weekly competition, known as Scholastic Challenge. As a Project Leader, I am also responsible for one subject area of the Scholastic Challenge aspect of the N.A.S.A. Project curriculum. Each week I have to prepare a mission that the participants will take home the following Monday and at least 10 questions that will be included in the pool of questions used for the Scholastic Challenge

  2. Aeronautical Information System

    Data.gov (United States)

    Department of Transportation — The Aeronautical Information System (AIS) is a leased weather automated system that provides a means of collecting and distributing aeronautical weather information...

  3. Convergent Aeronautics Solutions Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Convergent Aeronautics Solutions (CAS) Project uses short-duration activities to establish early-stage concept and technology feasibility for high-potential...

  4. Achieving Aeronautics Leadership: Aeronautics Strategic Enterprise Plan

    Science.gov (United States)

    1995-01-01

    Today, more than ever, aggressive leadership is required to ensure that our national investments in aeronautical research, technology, and facilities are shaped into a coordinated, and high-impact, strategy. Under the auspices of the National Science and Technology Council, and in conjunction with the domestic industry, universities, the Department of Defense, and the Federal Aviation Administration - our partners in aeronautics - we propose to provide that leadership, and this document is our plan.

  5. Aeronautical tubes and pipes

    Science.gov (United States)

    Beauclair, N.

    1984-12-01

    The main and subcomponent French suppliers of aircraft tubes and pipes are discussed, and the state of the industry is analyzed. Quality control is essential for tubes with regard to their i.d. and metallurgical compositions. French regulations do not allow welded seam tubes in hydraulic circuits unless no other form is available, and then rustproofed steel must be installed. The actual low level of orders for any run of tubes dictates that the product is only one of several among the manufacturers' line. Automation, both in NDT and quality control, assures that the tubes meet specifications. A total of 10 French companies participate in the industry, serving both civil and military needs, with some companies specializing only in titanium, steel, or aluminum materials. Concerns wishing to enter the market must upgrade their equipment to meet the higher aeronautical specifications and be prepared to furnish tubes and pipes that serve both functional and structural purposes simultaneously. Additionally, pipe-bending machines must also perform to tight specifications. Pipes can range from 0.2 mm exterior diameter to 40 mm, with wall thicknesses from 0.02 mm to 3 mm. A chart containing a list of manufacturers and their respective specifications and characteristics is presented, and a downtrend in production with reduction of personnel is noted.

  6. 14 CFR 61.155 - Aeronautical knowledge.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical knowledge. 61.155 Section 61....155 Aeronautical knowledge. (a) General. The knowledge test for an airline transport pilot certificate is based on the aeronautical knowledge areas listed in paragraph (c) of this section that...

  7. 14 CFR 61.185 - Aeronautical knowledge.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical knowledge. 61.185 Section 61... Flight Instructors With a Sport Pilot Rating § 61.185 Aeronautical knowledge. (a) A person who is... aeronautical knowledge areas for a recreational, private, and commercial pilot certificate applicable to...

  8. 14 CFR 61.125 - Aeronautical knowledge.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical knowledge. 61.125 Section 61... Aeronautical knowledge. (a) General. A person who applies for a commercial pilot certificate must receive and... aeronautical knowledge areas of paragraph (b) of this section that apply to the aircraft category and...

  9. Aeronautics. America in Space: The First Decade.

    Science.gov (United States)

    Anderton, David A.

    The major research and developments in aeronautics during the late 1950's and 1960's are reviewed descriptively with a minimum of technical content. Topics covered include aeronautical research, aeronautics in NASA, The National Advisory Committee for Aeronautics, the X-15 Research Airplane, variable-sweep wing design, the Supersonic Transport…

  10. NASA/University Conference on Aeronautics

    Science.gov (United States)

    1975-01-01

    The proceedings of a conference on the future of aeronautics are presented. The subjects discussed include the following: (1) aeronautics and the education of the engineer, (2) technical trends in aeronautics, and (3) the role of the university in aeronautics. The technical trends in aeronautics are concerned with aircraft noise control, the effect of the aircraft on the environment, airborne electronics for automated flight, and trends in aircraft design.

  11. Emissivity measurements on aeronautical alloys

    Energy Technology Data Exchange (ETDEWEB)

    Campo, L. del, E-mail: leire.del-campo@cnrs-orleans.f [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Perez-Saez, R.B., E-mail: raul.perez@ehu.e [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Instituto de Sintesis y Estudio de Materiales, Universidad del Pais Vasco, Apdo. 644, 48080 Bilbao (Spain); Gonzalez-Fernandez, L. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Esquisabel, X.; Fernandez, I. [Industria de Turbo Propulsores, S.A., Planta de Zamudio, Edificio 300, 48170 Zamudio, Bizkaia (Spain); Gonzalez-Martin, P. [Industria de Turbo Propulsores, S.A., Parque empresarial San Fernando, Avda. Castilla 2, 28830 San Fernando de Henares, Madrid (Spain); Tello, M.J. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Instituto de Sintesis y Estudio de Materiales, Universidad del Pais Vasco, Apdo. 644, 48080 Bilbao (Spain)

    2010-01-21

    The emissivity of three Ni and Co based aeronautical alloys is analyzed in this paper. These alloys are employed in high temperature environments whenever good corrosion resistance, high temperature resistance and high strength are essential. Thus, apart from the aeronautical industry, these alloys are also used in other technological applications, as for example, aerospace, nuclear reactors, and tooling. The results in this paper extend the emissivity data for these alloys available in the literature. Emissivity dependence on the radiation wavelength (2-22 {mu}m), sample temperature (200-650 {sup o}C) and emission angle (0-85{sup o}) has been investigated. In addition, the effect of surface finish and oxidation has also been taken into consideration. The data in this paper have several applications, as temperature measurement of a target by pyrometry, low observability of airplanes and thermal radiation heat transfer simulation in airplane nozzles or furnaces.

  12. Leading Edge Aeronautics Research for NASA Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The LEARN Project explores the creation of novel concepts and processes with the potential to create new capabilities in aeronautics research through awards to the...

  13. 14 CFR 61.105 - Aeronautical knowledge.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical knowledge. 61.105 Section 61... Aeronautical knowledge. (a) General. A person who is applying for a private pilot certificate must receive and... knowledge areas of paragraph (b) of this section that apply to the aircraft category and class rating...

  14. Piezoelectric MEMS Microphones for Ground Testing of Aeronautical Systems Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Improving the acoustical environment is critical in aeronautics. Airports and aeronautical systems manufacturers are facing ever-increasing demands to reduce noise...

  15. Quality Management System for Defence Aeronautical Industry

    OpenAIRE

    K.T. Thomas

    2006-01-01

    Indian defence aeronautical industry, while becoming a global business, demands a largeeffort to monitor quality management system (QMS) and to ensure quality of aeronauticalproducts. An effort is being made to look for an effective QMS for aeronautical industry in India,which will also meet the requirements of the regulatory authority.The essential features of an effective QMS are described and compared with the presentlyavailable QMS standards for defence aeronautical industry such as QCSR:...

  16. Aeronautical Engineering: A Continuing Bibliography. Supplement 421

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP#2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles.

  17. Mobile-ip Aeronautical Network Simulation Study

    Science.gov (United States)

    Ivancic, William D.; Tran, Diepchi T.

    2001-01-01

    NASA is interested in applying mobile Internet protocol (mobile-ip) technologies to its space and aeronautics programs. In particular, mobile-ip will play a major role in the Advanced Aeronautic Transportation Technology (AATT), the Weather Information Communication (WINCOMM), and the Small Aircraft Transportation System (SATS) aeronautics programs. This report presents the results of a simulation study of mobile-ip for an aeronautical network. The study was performed to determine the performance of the transmission control protocol (TCP) in a mobile-ip environment and to gain an understanding of how long delays, handoffs, and noisy channels affect mobile-ip performance.

  18. 76 FR 58843 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2011-09-22

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  19. 75 FR 17166 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2010-04-05

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  20. 78 FR 41114 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2013-07-09

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  1. 78 FR 69885 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2013-11-21

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  2. 76 FR 16643 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2011-03-24

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  3. 75 FR 41240 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2010-07-15

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  4. 75 FR 50782 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2010-08-17

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  5. 76 FR 183 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2011-01-03

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  6. 76 FR 40753 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2011-07-11

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  7. 78 FR 10640 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2013-02-14

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  8. 77 FR 38091 - NASA Advisory Council; Aeronautics Committee; Meeting.

    Science.gov (United States)

    2012-06-26

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting. AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  9. 77 FR 61432 - NASA Advisory Council; Aeronautics Committee; Meeting

    Science.gov (United States)

    2012-10-09

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Meeting AGENCY: National Aeronautics... Committee Act, Public Law 92-463, as amended, the National Aeronautics and Space Administration announces...

  10. 14 CFR 61.97 - Aeronautical knowledge.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical knowledge. 61.97 Section 61.97... knowledge. (a) General. A person who applies for a recreational pilot certificate must receive and log... knowledge areas of paragraph (b) of this section that apply to the aircraft category and class rating...

  11. Economic analysis of aeronautical research and technology

    Science.gov (United States)

    Gellman, A. J.

    1982-01-01

    The appropriateness of government intervention in the civilian market for aeronautics research and technology (R&T) is examined. The economic rationale for government intervention is examined. The conclusion is that the institutional role played by NASA in civilian aeronautics R&T markets is economically justified.

  12. Aeronautical Engineering: A Continuing Bibliography. Supplment 385

    Science.gov (United States)

    1998-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1998-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  13. Costs and Benefits of Advanced Aeronautical Technology

    Science.gov (United States)

    Bobick, J. C.; Denny, R. E.

    1983-01-01

    Programs available from COSMIC used to evaluate economic feasibility of applying advanced aeronautical technology to civil aircraft of future. Programs are composed of three major models: Fleet Accounting Module, Airframe manufacturer Module, and Air Carrier Module.

  14. Civilian Aeronautical Futures - The Responsibly Imaginable

    Science.gov (United States)

    Bushnell, Dennis M.

    2006-01-01

    Since 1940 Aeronautics has had an immense impact upon Global Human lifestyles and affairs - in both the Civilian and Military arenas. During this period Long distance Train and Ship passenger transport were largely supplanted by Air Travel and Aviation assumed a dominant role in warfare. The early 1940 s to the mid 1970 s was a particularly productive period in terms of Aeronautical Technology. What is interesting is that, since the mid 1970 s, the rate of Aeronautical Technological Progress has been far slower, the basic technology in nearly all of our current Aero Systems dates from the mid 70 s or earlier. This is especially true in terms of Configuration Aerodynamics, Aeronautics appears to have "settled" on the 707, double delta and rotary wing as the approach of choice for Subsonic long haul, supersonic cruise and VTOL respectively. Obviously there have been variants and some niche digression from this/these but in the main Aeronautics, particularly civilian Aeronautics, has become a self-professed "mature", Increasingly "Commodity", Industry. The Industry is far along an existing/deployed technology curve and focused, now for decades, on incremental/evolutionary change - largely Appliers vs. developers of technology. This is, of course, in sharp contrast to the situation in the early-to-later 20th century where Aeronautics was viewed as A Major Technological Engine, much the way IT/Bio/Nano/Energetics/Quantum Technologies are viewed today. A search for Visionary Aeronautical "Futures" papers/projections indicates a decided dearth thereof over the last 20 plus years compared to the previous quarter Century. Aeronautics is part of Aerospace and Aerospace [including Aeronautics] has seen major cutbacks over the last decades. Some numbers for the U.S. Aerospace Industry serve as examples. Order of 600,000 jobs lost, with some 180,000 more on the block over the next 10 years. Approximately 25% of the Aerospace workforce is eligible to retire and the average

  15. Quality Management System for Defence Aeronautical Industry

    Directory of Open Access Journals (Sweden)

    K.T. Thomas

    2006-01-01

    Full Text Available Indian defence aeronautical industry, while becoming a global business, demands a largeeffort to monitor quality management system (QMS and to ensure quality of aeronauticalproducts. An effort is being made to look for an effective QMS for aeronautical industry in India,which will also meet the requirements of the regulatory authority.The essential features of an effective QMS are described and compared with the presentlyavailable QMS standards for defence aeronautical industry such as QCSR: 2002 (DGAQA, India,Def Stan (MOD, UK, ISO, AQAPs (NATO and Society of Automotive Engineers (SAE aerospacestandards (AS. Evolution, relevance and review of the existing standards, to meet the requirementsof the industry as well as regulatory authority, have been made to bring out the special featuresand differences. The study leads to the most acceptable standard of SAE-AS-9100 (Rev B.With suitable modifications to include regulatory requirement of assistance for governmentquality assurance in the standard, when complied with, it will fully meet the QMS requirementsof the Indian defence aeronautical supply organisations as well as the requirements of theregulatory authority. Minor reorientation of the regulatory functions and inclusion of the QMSin the defence aeronautical supply orders are also suggested.

  16. Human Factors in Aeronautics at NASA

    Science.gov (United States)

    Mogford, Richard

    2016-01-01

    This is a briefing to a regularly meeting DoD group called the Human Systems Community of Interest: Mission Effectiveness. I was asked to address human factors in aeronautics at NASA. (Exploration (space) human factors has apparently already been covered.) The briefing describes human factors organizations at NASA Ames and Langley. It then summarizes some aeronautics tasks that involve the application of human factors in the development of specific tools and capabilities. The tasks covered include aircrew checklists, dispatch operations, Playbook, Dynamic Weather Routes, Traffic Aware Strategic Aircrew Requests, and Airplane State Awareness and Prediction Technologies. I mention that most of our aeronautics work involves human factors as embedded in development tasks rather than basic research.

  17. Ensuring US National Aeronautics Test Capabilities

    Science.gov (United States)

    Marshall, Timothy J.

    2010-01-01

    U.S. leadership in aeronautics depends on ready access to technologically advanced, efficient, and affordable aeronautics test capabilities. These systems include major wind tunnels and propulsion test facilities and flight test capabilities. The federal government owns the majority of the major aeronautics test capabilities in the United States, primarily through the National Aeronautics and Space Administration (NASA) and the Department of Defense (DoD). However, changes in the Aerospace landscape, primarily the decrease in demand for testing over the last 20 years required an overarching strategy for management of these national assets. Therefore, NASA established the Aeronautics Test Program (ATP) as a two-pronged strategic initiative to: (1) retain and invest in NASA aeronautics test capabilities considered strategically important to the agency and the nation, and (2) establish a strong, high level partnership with the DoD. Test facility utilization is a critical factor for ATP because it relies on user occupancy fees to recover a substantial part of the operations costs for its facilities. Decreasing utilization is an indicator of excess capacity and in some cases low-risk redundancy (i.e., several facilities with basically the same capability and overall low utilization). However, low utilization does not necessarily translate to lack of strategic importance. Some facilities with relatively low utilization are nonetheless vitally important because of the unique nature of the capability and the foreseeable aeronautics testing needs. Unfortunately, since its inception, the customer base for ATP has continued to shrink. Utilization of ATP wind tunnels has declined by more than 50% from the FY 2006 levels. This significant decrease in customer usage is attributable to several factors, including the overall decline in new programs and projects in the aerospace sector; the impact of computational fluid dynamics (CFD) on the design, development, and research

  18. NASA's Role in Aeronautics: A Workshop. Volume I--Summary.

    Science.gov (United States)

    National Academy of Sciences - National Research Council, Washington, DC. Assembly of Engineering.

    The central task of the workshop summarized in this report was to examine the relationship of the National Aeronautics and Space Administration's (NASA's) aeronautical research capabilities to the state of U.S. aviation and to make recommendations about NASA's future roles in aeronautics. Topics include NASA's role in: (1) aeronautics research and…

  19. Gulf of Mexico IFR Aeronautical Chart Index - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The IFR Enroute Aeronautical Chart series is designed to meet the needs of users who require a digital version chart. This is the visual index to the charts for the...

  20. SMART AERONAUTICAL CHART MANAGEMENT SYSTEM DESIGN

    Directory of Open Access Journals (Sweden)

    M. E. Pakdil

    2015-10-01

    Full Text Available Civil aviation is developing rapidly, and the number of domestic and international operations is increasing exponentially every year than the previous one. Airline companies with increased air traffic and the number of passengers increase the demand of new aircrafts. An aircraft needs not only fuel but also pilot and aeronautical information (charts, digital navigation information, flight plan, and etc. to perform flight operation. One of the most important components in aeronautical information is the terminal chart. Authorized institution in every state is responsible to publish their terminal charts for certain periods. Although these charts are produced in accordance with ICAO’s Annex 4 and Annex 15, cartographic representation and page layout differs in each state’s publication. This situation makes difficult to read them by pilots. In this paper, standard instrument departure (SID charts are analysed to produce by use of cutting-edge and competitive technologies instead of classical computer-aided drawing and vector based graphic applications that are currently used by main chart producers. The goal is to design efficient and commercial chart management system that is able to produce aeronautical charts with same cartographic representation for all states.

  1. Aeronautical progress in the United Kingdom

    Directory of Open Access Journals (Sweden)

    Dr. Cockburn

    1953-07-01

    Full Text Available The progress in aeronautics in the United Kingdom from 1903 to the present-day has been traced. The advance in design could be traced partly to the steady improvement in techniques such as strength of materials, structural methods, aerodynamics and engine design, and partly to definite technical discontinuities such as the introduction of the unbraced monoplane and later of the jet turbine. The key to this progress has been the large investment made in science and technical research and the healthy integration between industrial enterprise and government planning.

  2. Solar energy and the aeronautics industry. Thesis

    Science.gov (United States)

    Benedek, L.

    1985-01-01

    An introduction to the physical aspects of solar energy, incidental energy and variations in solar flux is presented, along with an explanation of the physical principles of obtaining solar energy. The history of the application of solar energy to aeronautics, including the Gossamer Penguin and the Solar Challenger is given. Finally, an analysis of the possibilities of using a reaction motor with hybrid propulsion combining solar energy with traditional fuels as well as calculations of the proposed cycle and its mode of operation are given.

  3. TEXTILE STRUCTURES FOR AERONAUTICS (PART II

    Directory of Open Access Journals (Sweden)

    SOLER Miquel

    2014-05-01

    Full Text Available Three-dimensional (3D textile structures with better delamination resistance and damage impact tolerance to be applied in composites for structural components is one of the main goals of the aeronautical industry. Textile Research Centre in Canet de Mar has been working since 2008 in this field. Our staff has been designing, developing and producing different textile structures using different production methods and machinery to improve three-dimensional textile structures as fiber reinforcement for composites. This paper describes different tests done in our textile labs from unidirectional structures to woven, knitted or braided 3 D textile structures. Advantages and disadvantages of each textile structure are summarized. The second part of this paper deals with our know-how in the manufacturing and assessing of three-dimensional textile structures during this last five years in the field of textile structures for composites but also in the development of structures for other applications. In the field of composites for aeronautic sector we have developed textile structures using the main methods of textile production, that is to say, weaving, warp knitting, weft knitting and braiding. Comparing the advantages and disadvantages it could be said that braided fabrics, with a structure in the three space axes are the most suitable for fittings and frames.

  4. IMPLEMENTATION OF AERONAUTICAL LOCAL SATELLITE AUGMENTATION SYSTEM

    Directory of Open Access Journals (Sweden)

    Stojce Ilcev

    2011-03-01

    Full Text Available Abstract. This paper introduces development and implementation of new Local Satellite AugmentationSystem as an integration component of the Regional Satellite Augmentation System (RSAS employingcurrent and new Satellite Communications, Navigation and Surveillance (CNS for improvement of the AirTraffic Control (ATC and Air Traffic Management (ATM and for enhancement safety systems includingtransport security and control of flights in all stages, airport approaching, landing, departures and allmovements over airport surface areas. The current first generation of the Global Navigation Satellite SystemGNSS-1 applications are represented by fundamental military solutions for Position, Velocity and Time ofthe satellite navigation and determination systems such as the US GPS and Russian GLONASS (Former-USSR requirements, respectively. The establishment of Aeronautical CNS is also discussed as a part ofGlobal Satellite Augmentation Systems of GPS and GLONASS systems integrated with existing and futureRSAS and LSAS in airports areas. Specific influence and factors related to the Comparison of the Currentand New Aeronautical CNS System including the Integration of RSAS and GNSS solutions are discussedand packet of facts is determined to maximize the new satellite Automatic Dependent Surveillance System(ADSS and Special Effects of the RSAS Networks. The possible future integration of RSAS and GNSS andthe common proposal of the satellite Surface Movement Guidance and Control are presented in thechangeless ways as of importance for future enfacements of ATC and ATM for any hypothetical airportinfrastructure.Keywords: ADSS, ATC, ATM, CNS, GSAS, LRAS, RSAS, SMGC, Special Effects of RSAS.

  5. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a...

  6. NASA's Role in Aeronautics: A Workshop. Volume IV - General Aviation.

    Science.gov (United States)

    National Academy of Sciences - National Research Council, Washington, DC. Assembly of Engineering.

    The central task of a 1980 workshop on the role of the National Aeronautics and Space Administration (NASA) in aeronautics was to examine the relationship of NASA's research capabilities to the state of U.S. aviation and to make recommendations about NASA's future role in aeronautics. The findings and recommendations of the Panel on General…

  7. NASA's Role in Aeronautics: A Workshop. Volume II - Military Aviation.

    Science.gov (United States)

    National Academy of Sciences - National Research Council, Washington, DC. Assembly of Engineering.

    The central task of a 1980 workshop on the role of the National Aeronautics and Space Administration (NASA) in aeronautics was to examine the relationship of NASA's research capabilities to the state of U.S. aviation and to make recommendations about NASA's future role in aeronautics. The findings and recommendations of the Panel on Military…

  8. Transactions of Nanjing University of Aeronautics & Astronautics

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Transactions of Nanjing University of Aeronautics & Astronautics (TNUAA, in English) is a comprehensive academic publication which deals mainly with the research achievements in aeronautics, civil aviation, astronautics and their theoretical basis. It is published by Nanjing University of Aeronautics & Astronautics, and has started its publication since Oct. 1982.

  9. Application of Mobile-ip to Space and Aeronautical Networks

    Science.gov (United States)

    Leung, Kent; Shell, Dan; Ivancic, William D.; Stewart, David H.; Bell, Terry L.; Kachmar, Brian A.

    2001-01-01

    The National Aeronautics and Space Administration (NASA) is interested in applying mobile Internet protocol (mobile-ip) technologies to its space and aeronautics programs. In particular, mobile-ip will play a major role in the Advanced Aeronautic Transportation Technology (AAT-F), the Weather Information Communication (WINCOMM), and the Small Aircraft Transportation System (SATS) aeronautics programs. This paper describes mobile-ip and mobile routers--in particular, the features, capabilities, and initial performance of the mobile router are presented. The application of mobile-router technology to NASA's space and aeronautics programs is also discussed.

  10. A fuel level sensor for aeronautical applications

    Science.gov (United States)

    Petrazzuoli, L.; Persichetti, G.; Onorato, G.; Grimaldi, I. A.; Testa, G.; Bernini, R.

    2015-03-01

    A novel fuel level sensor for aeronautical applications is developed. The sensor is based on an array of total internal reflection (TIR) point sensors. Respect to conventional TIR sensors the new design permits to be sensitive to common jet fuels (JetA, JP4,JP7) but also to operate with new alternative fuels. The sensor doesn't require aircraft calibration, temperature compensation and furthermore is able to operate correctly when partially or totally exposed to presence of condensed water on its surface. The point sensors are multiplexed on a single fiber by optical couplers and interrogated simultaneously by Optical Time Domain Reflectometry (OTDR) at a wavelength of 1550nm. Experimental results show a resolution of +/-1.5mm could be achieved. The sensors is also able to measure the free water level in the fuel.

  11. The revolutionary impact of evolving aeronautical technologies

    Science.gov (United States)

    Kayten, G. G.; Driver, C.; Maglieri, D. J.

    1984-01-01

    Recent advances in aeronautical technologies which could produce revolutionary changes in transport aircraft if fully implemented are delineated. Laminar flow control offers a L/D improvement from the current 18 to 22 if used with a 767 configuration. Higher aspect and thickness/chord ratios could yield more efficient structural designs and further drag reduction. High-strength, fiber-reinforced composite structures can reduce structural weight by 10-30 percent. Improved engine cooling methods, higher stage loadings and exhaust temperatures can lower the SFC by 15 percent, engine weight by 15 percent, and the parts count by 50 percent. Aft-mounted counterrotating propellers can potentially decrease the SFC an additional 15-20 percent. Supersonic transport aircraft with L/D ratios of 18 and 70 seat miles/gal fuel efficiency can now be built that weigh half as much as the Concorde and carry the same load. The new SST would have superplastic-molded Al alloy structures.

  12. TEXTILE STRUCTURES FOR AERONAUTICS (PART I

    Directory of Open Access Journals (Sweden)

    SOLER Miquel

    2014-05-01

    Full Text Available Three-dimensional (3D textile structures with better delamination resistance and damage impact tolerance to be applied in composites for structural components is one of the main goals of the aeronautical industry. Textile Research Centre in Canet de Mar has been working since 2008 in this field. Our staff has been designing, developing and producing different textile structures using different production methods and machinery to improve three-dimensional textile structures as fiber reinforcement for composites. This paper describes different tests done in our textile labs from unidirectional structures to woven, knitted or braided 3 D textile structures. Advantages and disadvantages of each textile structure are summarized. The first part of this paper deals with the introduction of our Textile Research Centre in the field of composites and carbon fiber as a main material to produce three – dimensional textile structures. The use of composite materials in aerospace structures has increased over the past decades. Our contribution related to this field consists of the development of three- dimensional textile structures and even the adaptation and improvement of machinery to do it possible. Carbon fiber provides advantages as volumetric fraction and minimum fault occurrence. However carbon fiber has also disadvantages as uncomfortable handling delamination and high cost of material and processing.

  13. Classification of Aeronautics System Health and Safety Documents

    Data.gov (United States)

    National Aeronautics and Space Administration — Most complex aerospace systems have many text reports on safety, maintenance, and associated issues. The Aviation Safety Reporting System (ASRS) spans several...

  14. Aeronautical Engineering: A Continuing Bibliography with Indexes. SUPPL-422

    Science.gov (United States)

    2000-01-01

    This report lists reports, articles and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles.

  15. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 392

    Science.gov (United States)

    1999-01-01

    This report lists reports, articles and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles.

  16. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 405

    Science.gov (United States)

    1999-01-01

    This report lists reports, articles and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles.

  17. Sectoral Innovation Watch Space and Aeronautics Sectors. Final sector report

    NARCIS (Netherlands)

    Giessen, A.M. van der

    2011-01-01

    The space and aeronautics sectors are high-technology sectors and belong to the most innovative sectors in Europe1. Analysis of CIS4 data shows that the space and aeronautics sectors continue to be very innovative. 85% of the firms is engaged in intramural R&D. Total R&D expenditures are between 21%

  18. 75 FR 11225 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2010-03-10

    ... Forum (ACF 10-01) to discuss informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is.... App. II), notice is hereby given of a meeting of the FAA Aeronautical Charting Forum to be held...

  19. A Hybrid Satellite-Terrestrial Approach to Aeronautical Communication Networks

    Science.gov (United States)

    Kerczewski, Robert J.; Chomos, Gerald J.; Griner, James H.; Mainger, Steven W.; Martzaklis, Konstantinos S.; Kachmar, Brian A.

    2000-01-01

    Rapid growth in air travel has been projected to continue for the foreseeable future. To maintain a safe and efficient national and global aviation system, significant advances in communications systems supporting aviation are required. Satellites will increasingly play a critical role in the aeronautical communications network. At the same time, current ground-based communications links, primarily very high frequency (VHF), will continue to be employed due to cost advantages and legacy issues. Hence a hybrid satellite-terrestrial network, or group of networks, will emerge. The increased complexity of future aeronautical communications networks dictates that system-level modeling be employed to obtain an optimal system fulfilling a majority of user needs. The NASA Glenn Research Center is investigating the current and potential future state of aeronautical communications, and is developing a simulation and modeling program to research future communications architectures for national and global aeronautical needs. This paper describes the primary requirements, the current infrastructure, and emerging trends of aeronautical communications, including a growing role for satellite communications. The need for a hybrid communications system architecture approach including both satellite and ground-based communications links is explained. Future aeronautical communication network topologies and key issues in simulation and modeling of future aeronautical communications systems are described.

  20. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 420

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  1. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 419

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  2. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 398

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes - subject and author are included after the abstract section.

  3. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 396

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  4. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 404

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  5. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 418

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  6. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 391

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  7. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 413

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  8. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 406

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. Two indexes-subject and author are included after the abstract section.

  9. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 389

    Science.gov (United States)

    1998-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1998-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  10. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 387

    Science.gov (United States)

    1998-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1998-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  11. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 386

    Science.gov (United States)

    1998-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1998-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  12. An Overview of the NASA Aeronautics Test Program Strategic Plan

    Science.gov (United States)

    Marshall, Timothy J.

    2010-01-01

    U.S. leadership in aeronautics depends on ready access to technologically advanced, efficient, and affordable aeronautics test capabilities. These systems include major wind tunnels and propulsion test facilities and flight test capabilities. The federal government owns the majority of the major aeronautics test capabilities in the United States, primarily through the National Aeronautics and Space Administration (NASA) and the Department of Defense (DoD), however an overarching strategy for management of these national assets was needed. Therefore, in Fiscal Year (FY) 2006 NASA established the Aeronautics Test Program (ATP) as a two-pronged strategic initiative to: (1) retain and invest in NASA aeronautics test capabilities considered strategically important to the agency and the nation, and (2) establish a strong, high level partnership with the DoD Test Resources Management Center (TRMC), stewards of the DoD test and evaluation infrastructure. Since then, approximately seventy percent of the ATP budget has been directed to underpin fixed and variable costs of facility operations within its portfolio and the balance towards strategic investments in its test facilities, including maintenance and capability upgrades. Also, a strong guiding coalition was established through the National Partnership for Aeronautics Testing (NPAT), with governance by the senior leadership of NASA s Aeronautics Research Mission Directorate (ARMD) and the DoD's TRMC. As part of its strategic planning, ATP has performed or participated in many studies and analyses, including assessments of major NASA and DoD aeronautics test capabilities, test facility condition evaluations and market research. The ATP strategy has also benefitted from unpublished RAND research and analysis by Ant n et al. (2009). Together, these various studies, reports and assessments serve as a foundation for a new, five year strategic plan that will guide ATP through FY 2014. Our vision for the future is a balanced

  13. Fundamentals of Aerospace Engineering: An introductory course to aeronautical engineering

    OpenAIRE

    Soler, Manuel

    2014-01-01

    Fundamentals of Aerospace Engineering is a text book that provides an introductory, thorough overview of aeronautical engineering, and it is aimed at serving as reference for an undergraduate course on aerospace engineering.

  14. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 397

    Science.gov (United States)

    1999-01-01

    This report lists reports, articles and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  15. NASA Ames and Future of Space Exploration, Science, and Aeronautics

    Science.gov (United States)

    Cohen, Jacob

    2015-01-01

    Pushing the frontiers of aeronautics and space exploration presents multiple challenges. NASA Ames Research Center is at the forefront of tackling these issues, conducting cutting edge research in the fields of air traffic management, entry systems, advanced information technology, intelligent human and robotic systems, astrobiology, aeronautics, space, earth and life sciences and small satellites. Knowledge gained from this research helps ensure the success of NASA's missions, leading us closer to a world that was only imagined as science fiction just decades ago.

  16. 76 FR 75565 - NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems (UAS) Subcommittee Meeting

    Science.gov (United States)

    2011-12-02

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems (UAS) Subcommittee Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of Meeting....

  17. 78 FR 38076 - NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting

    Science.gov (United States)

    2013-06-25

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of Meeting....

  18. 77 FR 59020 - NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting

    Science.gov (United States)

    2012-09-25

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of meeting....

  19. 78 FR 7816 - NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee Meeting

    Science.gov (United States)

    2013-02-04

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of meeting....

  20. 77 FR 32699 - NASA Advisory Council; Aeronautics Committee; UAS Subcommittee Meeting

    Science.gov (United States)

    2012-06-01

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; UAS Subcommittee Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of meeting. SUMMARY: In accordance with...

  1. 78 FR 25100 - NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting

    Science.gov (United States)

    2013-04-29

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION NASA Advisory Council; Aeronautics Committee; Unmanned Aircraft Systems Subcommittee; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of meeting....

  2. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplment 394

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes-subject and author are included after the abstract section.

  3. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 407

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes-subject and author are included after the abstract section.

  4. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 411

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes- subject and author are included after the abstract section.

  5. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 408

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, a Continuing Bibliography with Indexes (NASA/SP#1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes#subject and author are included after the abstract section.

  6. Aeronautical Engineering: A Continuing Bibliography with Indexes. Supplement 415

    Science.gov (United States)

    2000-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-2000-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes-subject and author are included after the abstract section.

  7. The application of artificial intelligence technology to aeronautical system design

    Science.gov (United States)

    Bouchard, E. E.; Kidwell, G. H.; Rogan, J. E.

    1988-01-01

    This paper describes the automation of one class of aeronautical design activity using artificial intelligence and advanced software techniques. Its purpose is to suggest concepts, terminology, and approaches that may be useful in enhancing design automation. By understanding the basic concepts and tasks in design, and the technologies that are available, it will be possible to produce, in the future, systems whose capabilities far exceed those of today's methods. Some of the tasks that will be discussed have already been automated and are in production use, resulting in significant productivity benefits. The concepts and techniques discussed are applicable to all design activity, though aeronautical applications are specifically presented.

  8. Aeronautical Engineering: A Continuing Bibliography With Indexes. Supplement 414

    Science.gov (United States)

    2000-01-01

    This report lists reports, articles and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract. The NASA CASI price code table, addresses of organizations, and document availability information are included before the abstract section. Two indexes-subject and author are included after the abstract section.

  9. ROMANIAN AERONAUTICAL METEOROLOGY APPLICABLE LEGAL FRAMEWORK –BRIEFING

    Directory of Open Access Journals (Sweden)

    CATALIN POPA

    2012-05-01

    Full Text Available The purpose of this briefing is toprovide an overview of the aeronautical meteorology legal framework in Romania. In this context, the role and importance of aeronautical meteorology in international air traffic management will be underlined, with focus on the civil aviation activity in Romania. The international legal framework and modalities of implementing these rules at national level will constitute a significant part of the present study., Specific accent will be put on the national regulatory framework and structure, means of updating it, and how it responds to changing regulatory requirements.

  10. Aeronautical mobile satellite service: Air traffic control applications

    Science.gov (United States)

    Sim, Dave

    1990-01-01

    Canada's history both in aviation and in satellite communications development spans several decades. The introduction of aeronautical mobile satellite communications will serve our requirements for airspace management in areas not served by line-of-sight radio and radar facilities. The ensuing improvements in air safety and operating efficiency are eagerly awaited by the aviation community.

  11. National Aeronautics and Space Administration (NASA) Education 1993-2009

    Science.gov (United States)

    Ivie, Christine M.

    2009-01-01

    The National Aeronautics and Space Administration was established in 1958 and began operating a formal education program in 1993. The purpose of this study was to analyze the education program from 1993-2009 by examining strategic plan documents produced by the NASA education office and interviewing NASA education officials who served during that…

  12. Aeronautics Study Takes Off! Glider Design for Beginners

    Science.gov (United States)

    Lazaros, Edward J.; Carlson, Katie

    2008-01-01

    Study of aeronautics is an interesting and motivating subject for students and educators alike. The activity described in this article--appropriate for upper elementary or middle school students--provides an excellent introduction to airplane design and the science of aerodynamics. It also gives students good experience applying knowledge from a…

  13. A Case Study of Peer Learning in Higher Aeronautical Education

    Science.gov (United States)

    Borglund, Dan

    2007-01-01

    In order to improve student learning in an advanced course in aeronautics, lectures are replaced with more student-centred sessions based on peer learning. The course is organised in student teams, with the main task of delivering lecture requests for full class discussions. For the same reason, the written theory exam is replaced by a peer review…

  14. International law and regulation of aeronautical public correspondence by satellite

    NARCIS (Netherlands)

    Brisibe, Tare

    2006-01-01

    This work covers the evolution of satellite based Aeronautical Public Correspondence and the operational environment in which services are being offered. Followed by an examination of applicable rules, including the relevant institutions from which they emanate, attention is devoted to questions on

  15. 77 FR 50759 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2012-08-22

    ... (ACF) to discuss informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is separated... to Sec. 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463; 5 U.S.C. App. II), notice...

  16. 78 FR 12415 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2013-02-22

    ... informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is separated into two distinct groups. The... INFORMATION: Pursuant to Sec. 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463; 5 U.S.C. App....

  17. 75 FR 54221 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2010-09-03

    ... informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is separated into two distinct groups. The...: Pursuant to Sec. 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463; 5 U.S.C. App. II),...

  18. 78 FR 52230 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2013-08-22

    ... informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is separated into two distinct groups. The... INFORMATION: Pursuant to Sec. 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463; 5 U.S.C. App....

  19. 76 FR 53530 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2011-08-26

    ... informational content and design of aeronautical charts and related products, as well as instrument flight procedures development policy and design criteria. DATES: The ACF is separated into two distinct groups. The.... 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463; 5 U.S.C. App. II), notice is...

  20. 77 FR 71089 - Pilot Loading of Aeronautical Database Updates

    Science.gov (United States)

    2012-11-29

    ... FAA issued regulations (61 FR 19498) categorizing pilot-performed updates of navigation databases as... regulations in the NPRM (76 FR 64859, October 19, 2011), by removing the task of updating databases used in... Federal Aviation Administration 14 CFR Part 43 RIN 2120-AJ91 Pilot Loading of Aeronautical...

  1. 78 FR 15804 - Waiver of Aeronautical Land-Use Assurance: Rolla National Airport (VIH), Rolla, MO

    Science.gov (United States)

    2013-03-12

    ... Federal Aviation Administration Waiver of Aeronautical Land-Use Assurance: Rolla National Airport (VIH... airport property at the Rolla National Airport (VIH) from aeronautical use to non-aeronautical for revenue... Airport (VIH) is proposing the release of one parcel, of 10 acres, more or less from aeronautical to...

  2. 75 FR 81678 - Aeronautics Science and Technology Subcommittee; Committee on Technology; National Science and...

    Science.gov (United States)

    2010-12-28

    ... TECHNOLOGY POLICY Aeronautics Science and Technology Subcommittee; Committee on Technology; National Science... Aeronautics Research, Development, Test and Evaluation (RDT&E) Infrastructure Plan. SUMMARY: The Aeronautics...) Committee on Technology will hold a public meeting ] to review and discuss the National Aeronautics...

  3. Aeronautics: An Educator's Guide with Activities in Science, Mathematics, and Technology Education.

    Science.gov (United States)

    National Aeronautics and Space Administration, Washington, DC.

    This educator's guide, developed for students in grades 2-4, discusses the field of aeronautics. It begins with education standards and skill matrices for the classroom activities, a description of the National Aeronautics and Space Administration (NASA) aeronautics mission, and a brief history of aeronautics. Activities are written for the…

  4. Chemical Gas Sensors for Aeronautics and Space Applications III

    Science.gov (United States)

    Hunter, G. W.; Neudeck, P. G.; Chen, L. Y.; Liu, C. C.; Wu, Q. H.; Sawayda, M. S.; Jin, Z.; Hammond, J.; Makel, D.; Liu, M.; Rauch, W. A.; Hall, G.

    1999-01-01

    Aeronautic and space applications require the development of chemical sensors with capabilities beyond those of commercially available sensors. Areas of interest include launch vehicle safety monitoring, emission monitoring, and fire detection. This paper discusses the needs of aeronautic and space applications and the point-contact sensor technology being developed to address these needs. The development of these sensors is based on progress in two types of technology: 1) Micromachining and microfabrication technology to fabricate miniaturized sensors. 2) The development of high temperature semiconductors, especially silicon carbide. Sensor development for each application involves its own challenges in the fields of materials science and fabrication technology. The number of dual-use commercial applications of this microfabricated gas sensor technology make this area of sensor development a field of significant interest.

  5. Chemical Gas Sensors for Aeronautic and Space Applications 2

    Science.gov (United States)

    Hunter, G. W.; Chen, L. Y.; Neudeck, P. G.; Knight, D.; Liu, C. C.; Wu, Q. H.; Zhou, H. J.; Makel, D.; Liu, M.; Rauch, W. A.

    1998-01-01

    Aeronautic and Space applications require the development of chemical sensors with capabilities beyond those of commercially available sensors. Areas of most interest include launch vehicle safety monitoring emission monitoring and fire detection. This paper discusses the needs of aeronautic and space applications and the point-contact sensor technology being developed to address these needs. The development of these sensor is based on progress two types of technology: 1) Micro-machining and micro-fabrication technology to fabricate miniaturized sensors. 2) The development of high temperature semiconductors, especially silicon carbide. Sensor development for each application involves its own challenges in the fields of materials science and fabrication technology. The number of dual-use commercial applications of this micro-fabricated gas sensor technology make this area of sensor development a field of significant interest.

  6. Chemical Gas Sensors for Aeronautic and Space Applications

    Science.gov (United States)

    Hunter, Gary W.; Chen, Liang-Yu; Neudeck, Philip G.; Knight, Dak; Liu, Chung-Chiun; Wu, Quing-Hai; Zhou, Huan-Jun

    1997-01-01

    Aeronautic and space applications require the development of chemical sensors with capabilities beyond those of commercially available sensors. Two areas of particular interest are safety monitoring and emission monitoring. In safety monitoring, detection of low concentrations of hydrogen at potentially low temperatures is important while for emission monitoring the detection of nitrogen oxides, hydrogen, hydrocarbons and oxygen is of interest. This paper discusses the needs of aeronautic and space applications and the point-contact sensor technology being developed to address these needs. The development of these sensors is based on progress in two types of technology: (1) Micromachining and microfabrication technology to fabricate miniaturized sensors. (2) The development of high temperature semiconductors, especially silicon carbide. The detection of each type of gas involves its own challenges in the fields of materials science and fabrication technology. The number of dual-use commercial applications of this microfabricated gas sensor technology make this general area of sensor development a field of significant interest.

  7. National Aeronautics and Space Administration Fiscal Year 2001 Accountability Report

    Science.gov (United States)

    2002-01-01

    The National Aeronautics and Space Administration (NASA) is an independent Agency established to plan and manage the future of the Nation's civil aeronautics and space program. This Accountability Report covers Federal Fiscal Year (FY) 2001 (October 1, 2000, through September 30, 2001), with discussion of some subsequent events. The Report contains an overview addressing the Agency's critical programs and financial performance and includes highlights of performance organized by goals and objectives of the Enterprises and Crosscutting Processes. The Report also summarizes NASA's stewardship over budget and financial resources, including audited financial statements and footnotes. The financial statements reflect an overall position of offices and activities, including assets and liabilities, as well as results of operations, pursuant to requirements of Federal law (31 U.S.C. 3515(b)). The auditor's opinions on NASA's financial statements, reports on internal controls, and compliance with laws and regulations are included in this report.

  8. CLUSTERING THE TECHNICAL CAPABILITY IN THE BRAZILIAN AERONAUTICAL MAINTENANCE INDUSTRY

    OpenAIRE

    Marcio Cardoso Machado; Ligia Maria Soto Urbina; Rodrigo Scarpel

    2013-01-01

    In the sectors where equipment requiring services of maintenance are technologically complex and advanced, such as in the air transportation, knowing and managing the technical capability of the enterprises of the sector can be a good way maximizing the efforts of training. This paper attempts to present a process of technical capability clustering for the aeronautical maintenance industry, in order to provide a usable overview of the sector competences. The findings present a unique insight ...

  9. New trends for the NDT of aeronautic welds

    Science.gov (United States)

    Ithurralde, G.; Simonet, D.; Choffy, J.-P.; Bernard, L.

    2001-04-01

    Recent advances in laser beam welding, electron beam welding and friction stir welding enable to join aeronautic and space alloys (mainly aluminum based) and think about new welded design for structural parts at a lower cost. This paper deals with both the non destructive testing approach implemented for welding process optimization, and the NDT multi-sensors tools selected because of their ability for on-line defect tracking automation.

  10. The Aeronautics Education, Research, and Industry Alliance (AERIAL) 2002 Report

    Science.gov (United States)

    Bowen, Brent D.; Fink, Mary M.; Nickerson, Jocelyn S.

    2002-01-01

    This report presents and overview of the Aeronautics Education, Research, and Industry Alliance (AERIAL). It covers the University of Nebraska's areas of research, and its outreach to students at Native American schools as part of AERIAL. The report contains three papers: "Airborne Remote Sensing (ARS) for Agricultural Research and Commercialization Application" (White Paper), "Validated Numerical Models for the Convective Extinction of Fuel Droplets (CEFD)", and "The Small Aircraft Transportation System (SATS): Research Collaborations with the NASA Langley Research Center".

  11. Aeronautics and Aviation Science: Careers and Opportunities Project

    Science.gov (United States)

    Texter, P. Cardie

    1998-01-01

    The National Aeronautics and Space Administration funded project, Aeronautics and Aviation Science: Careers and Opportunities has been in operation since July, 1995. This project operated as a collaboration with Massachusetts Corporation for Educational Telecommunications, the Federal Aviation Administration, Bridgewater State College and four targeted "core sites" in the greater Boston area. In its first and second years, a video series on aeronautics and aviation science was developed and broadcast via "live, interactive" satellite feed. Accompanying teacher and student supplementary instructional materials for grades 6-9 were produced and disseminated by the Massachusetts Corporation for Educational Telecommunications (MCET). In the MCET grant application it states that project Take Off! in its initial phase would recruit and train teachers at "core" sites in the greater Boston area, as well as opening participation to other on-line users of MCET's satellite feeds. "Core site" classrooms would become equipped so that teachers and students might become engaged in an interactive format which aimed at not only involving the students during the "live" broadcast of the instructional video series, but which would encourage participation in electronic information gathering and sharing among participants. As a Take Off! project goal, four schools with a higher than average proportion of minority and underrepresented youth were invited to become involved with the project to give these students the opportunity to consider career exploration and development in the field of science aviation and aeronautics. The four sites chosen to participate in this project were: East Boston High School, Dorchester High School, Randolph Junior-Senior High School and Malden High School. In year 3 Dorchester was unable to continue to fully participate and exited out. Danvers was added to the "core site" list in year 3. In consideration of Goals 2000, the National Science Foundation

  12. Take Off! Aeronautics and Aviation Science: Careers and Opportunities

    Science.gov (United States)

    1998-01-01

    Funded by National Aeronautic and Space Administration's High Performance Computing and Communications/ Learning Technologies Project (HPCC/LTP) Cooperative Agreement, Aeronautics and aviation Science: Careers and Opportunities was operative from July 1995 through July 1998. This project operated as a collaboration with Massachusetts Corporation for Educational Telecommunications, the Federal Aviation Administration, Bridgewater State College and four targeted "core sites" in the greater Boston area: Dorchester, Malden, East Boston and Randolph. In its first and second years, a video series with a participatory website on aeronautics and aviation science was developed and broadcast via "live, interactive" satellite feed. Accompanying teacher and student supplementary instructional materials for grades 6-12 were produced and disseminated by the Massachusetts Corporation for Educational Telecommunications (MCET). In year three, the project team redesigned the website, edited 14 videos to a five part thematic unit, and developed a teacher's guide to the video and web materials supplement for MAC and PC platforms, aligned with national standards. In the MCET grant application it states that project Take Off! in its initial phase would recruit and train teachers at "core" sites in the greater Boston area, as well as opening participation to other on-line users of MCET's satellite feeds. "Core site" classrooms would become equipped so that teachers and students might become engaged in an interactive format which aimed at not only involving the students during the "live" broadcast of the instructional video series, but which would encourage participation in electronic information gathering and sharing among participants. As a Take Off! project goal, four schools with a higher than average proportion of minority and underrepresented youth were invited to become involved with the project to give these students the opportunity to consider career exploration and development

  13. FY11 Facility Assessment Study for Aeronautics Test Program

    Science.gov (United States)

    Loboda, John A.; Sydnor, George H.

    2013-01-01

    This paper presents the approach and results for the Aeronautics Test Program (ATP) FY11 Facility Assessment Project. ATP commissioned assessments in FY07 and FY11 to aid in the understanding of the current condition and reliability of its facilities and their ability to meet current and future (five year horizon) test requirements. The principle output of the assessment was a database of facility unique, prioritized investments projects with budgetary cost estimates. This database was also used to identify trends for the condition of facility systems.

  14. Aeronautical Magnetic Torque Limiter for Passive Protection against Overloads

    Directory of Open Access Journals (Sweden)

    Cristian Cristache

    2016-09-01

    Full Text Available Actual aerospace and defense technologies present multiple limitations that need to be overcome in order to evolve to less contaminating and more efficient aircraft solutions. Contactless technologies come with essential advantages such as the absence of wear and friction. This work describes the design, prototype, and performance test according to RTCA-DO-160 of an aeronautical magnetic torque limiter. The results show correct continuous transmission operation (2250 rpm and 24 Nm from −50 °C to +90 °C. Moreover, overload protection has been demonstrated for more than 200 jamming events without damage or required maintenance to the device.

  15. A Flexible System for Simulating Aeronautical Telecommunication Network

    Science.gov (United States)

    Maly, Kurt; Overstreet, C. M.; Andey, R.

    1998-01-01

    At Old Dominion University, we have built Aeronautical Telecommunication Network (ATN) Simulator with NASA being the fund provider. It provides a means to evaluate the impact of modified router scheduling algorithms on the network efficiency, to perform capacity studies on various network topologies and to monitor and study various aspects of ATN through graphical user interface (GUI). In this paper we describe briefly about the proposed ATN model and our abstraction of this model. Later we describe our simulator architecture highlighting some of the design specifications, scheduling algorithms and user interface. At the end, we have provided the results of performance studies on this simulator.

  16. CLUSTERING THE TECHNICAL CAPABILITY IN THE BRAZILIAN AERONAUTICAL MAINTENANCE INDUSTRY

    Directory of Open Access Journals (Sweden)

    Marcio Cardoso Machado

    2013-11-01

    Full Text Available In the sectors where equipment requiring services of maintenance are technologically complex and advanced, such as in the air transportation, knowing and managing the technical capability of the enterprises of the sector can be a good way maximizing the efforts of training. This paper attempts to present a process of technical capability clustering for the aeronautical maintenance industry, in order to provide a usable overview of the sector competences. The findings present a unique insight into the understanding of competences clustering that may be used across different industries.

  17. Information Systems for NASA's Aeronautics and Space Enterprises

    Science.gov (United States)

    Kutler, Paul

    1998-01-01

    The aerospace industry is being challenged to reduce costs and development time as well as utilize new technologies to improve product performance. Information technology (IT) is the key to providing revolutionary solutions to the challenges posed by the increasing complexity of NASA's aeronautics and space missions and the sophisticated nature of the systems that enable them. The NASA Ames vision is to develop technologies enabling the information age, expanding the frontiers of knowledge for aeronautics and space, improving America's competitive position, and inspiring future generations. Ames' missions to accomplish that vision include: 1) performing research to support the American aviation community through the unique integration of computation, experimentation, simulation and flight testing, 2) studying the health of our planet, understanding living systems in space and the origins of the universe, developing technologies for space flight, and 3) to research, develop and deliver information technologies and applications. Information technology may be defined as the use of advance computing systems to generate data, analyze data, transform data into knowledge and to use as an aid in the decision-making process. The knowledge from transformed data can be displayed in visual, virtual and multimedia environments. The decision-making process can be fully autonomous or aided by a cognitive processes, i.e., computational aids designed to leverage human capacities. IT Systems can learn as they go, developing the capability to make decisions or aid the decision making process on the basis of experiences gained using limited data inputs. In the future, information systems will be used to aid space mission synthesis, virtual aerospace system design, aid damaged aircraft during landing, perform robotic surgery, and monitor the health and status of spacecraft and planetary probes. NASA Ames through the Center of Excellence for Information Technology Office is leading the

  18. Global energy issues affecting aeronautics: a reasoned conjecture

    Science.gov (United States)

    Allen, John E.

    1999-07-01

    This paper is a reasoned conjecture of the future up to 2050 AD including estimates of energy supply and consumption, transport system developments and corresponding pollution effects. Results of the logistic substitution methods (Volterra-Lotka) are used in forecasting trends in innovation, transport and energy. Later work on normative forecasts is also included. The future of aeronautics cannot be isolated from events in other transport modes which together create the major problem of crude oil replacement during the next century. Natural gas will be the dominant energy source for the next 80 years and a major question is how best to use it for aviation. The work on which this paper is based was started in 1992 to answer the following questions: Is the future oil shortfall sufficient to restrict aviation traffic and growth in the next 50 years? If so, what is its substitute? Can a substitute be obtained cheaply enough to free aviation from future kerosine shortages? Is it paramount to change to liquid hydrogen fuel to avoid future fuel shortage in aeronautics, incidentally conferring possible environmental advantages? There was no adequate evidence available to answer these questions, hence a method was devised to bring together several sets of partial data that contributed to the solution. The essence is to use the mean annual growth rate of traffic or energy over a future period as a pseudo-independent variable. This allows the inclusion of alternative high and low estimates of all the important quantities involved.

  19. 3 CFR - Designation of Officers of the National Aeronautics And Space Administration To Act as Administrator

    Science.gov (United States)

    2010-01-01

    ... 3 The President 1 2010-01-01 2010-01-01 false Designation of Officers of the National Aeronautics... Memorandum of January 16, 2009 Designation of Officers of the National Aeronautics And Space Administration To Act as Administrator Memorandum for the Administrator of the National Aeronautics and...

  20. 78 FR 38091 - Airworthiness Criteria: Proposed Airship Design Criteria for Lockheed Martin Aeronautics Model...

    Science.gov (United States)

    2013-06-25

    ... Register published on April 11, 2000 (65 FR 19477-19478), as well as at http://DocketsInfo.dot.gov . Docket... Martin Aeronautics Model LMZ1M Airship AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... Aeronautics model LMZ1M airship. On March 12, 2012 Lockheed Martin Aeronautics submitted an application...

  1. 77 FR 7183 - Public Availability of the National Aeronautics and Space Administration FY 2011 Service Contract...

    Science.gov (United States)

    2012-02-10

    ... SPACE ADMINISTRATION Public Availability of the National Aeronautics and Space Administration FY 2011 Service Contract Inventory AGENCY: National Aeronautics and Space Administration. ACTION: Notice of Public... 2010 (Pub. L. 111-117), National Aeronautics and Space Administration (NASA) is publishing this...

  2. Emerging Definition of Next-Generation of Aeronautical Communications

    Science.gov (United States)

    Kerczewski, Robert J.

    2006-01-01

    Aviation continues to experience rapid growth. In regions such as the United States and Europe air traffic congestion is constraining operations, leading to major new efforts to develop methodologies and infrastructures to enable continued aviation growth through transformational air traffic management systems. Such a transformation requires better communications linking airborne and ground-based elements. Technologies for next-generation communications, the required capacities, frequency spectrum of operation, network interconnectivity, and global interoperability are now receiving increased attention. A number of major planning and development efforts have taken place or are in process now to define the transformed airspace of the future. These activities include government and industry led efforts in the United States and Europe, and by international organizations. This paper will review the features, approaches, and activities of several representative planning and development efforts, and identify the emerging global consensus on requirements of next generation aeronautical communications systems for air traffic control.

  3. TRENDS: The aeronautical post-test database management system

    Science.gov (United States)

    Bjorkman, W. S.; Bondi, M. J.

    1990-01-01

    TRENDS, an engineering-test database operating system developed by NASA to support rotorcraft flight tests, is described. Capabilities and characteristics of the system are presented, with examples of its use in recalling and analyzing rotorcraft flight-test data from a TRENDS database. The importance of system user-friendliness in gaining users' acceptance is stressed, as is the importance of integrating supporting narrative data with numerical data in engineering-test databases. Considerations relevant to the creation and maintenance of flight-test database are discussed and TRENDS' solutions to database management problems are described. Requirements, constraints, and other considerations which led to the system's configuration are discussed and some of the lessons learned during TRENDS' development are presented. Potential applications of TRENDS to a wide range of aeronautical and other engineering tests are identified.

  4. Applied simulation and optimization in logistics, industrial and aeronautical practice

    CERN Document Server

    Mota, Idalia; Serrano, Daniel

    2015-01-01

    Presenting techniques, case-studies and methodologies that combine the use of simulation approaches with optimization techniques for facing problems in manufacturing, logistics, or aeronautical problems, this book provides solutions to common industrial problems in several fields, which range from manufacturing to aviation problems, where the common denominator is the combination of simulation’s flexibility with optimization techniques’ robustness. Providing readers with a comprehensive guide to tackle similar issues in industrial environments, this text explores novel ways to face industrial problems through hybrid approaches (simulation-optimization) that benefit from the advantages of both paradigms, in order to give solutions to important problems in service industry, production processes, or supply chains, such as scheduling, routing problems and resource allocations, among others.

  5. Aeronautical Mobile Airport Communications System (AeroMACS)

    Science.gov (United States)

    Budinger, James M.; Hall, Edward

    2011-01-01

    To help increase the capacity and efficiency of the nation s airports, a secure wideband wireless communications system is proposed for use on the airport surface. This paper provides an overview of the research and development process for the Aeronautical Mobile Airport Communications System (AeroMACS). AeroMACS is based on a specific commercial profile of the Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard known as Wireless Worldwide Interoperability for Microwave Access or WiMAX (WiMax Forum). The paper includes background on the need for global interoperability in air/ground data communications, describes potential AeroMACS applications, addresses allocated frequency spectrum constraints, summarizes the international standardization process, and provides findings and recommendations from the world s first AeroMACS prototype implemented in Cleveland, Ohio, USA.

  6. Health monitoring of aeronautical structures based on vibrations measurements

    Science.gov (United States)

    Bovio, Igor; Lecce, Leonardo

    2006-03-01

    Purpose of the paper is to present an innovative application inside the Non Destructive Testing field based on vibrations measurements, developed by the authors during the last three years, and already tested for analysing damage of many structural elements. The proposed new method is based on the acquisition and comparison of Frequency Response Functions (FRFs) of the monitored structure before and after an occurred damage. Structural damage modify the dynamical behaviour of the structure such as mass, stiffened and damping, and consequently the FRFs of the damaged structure in comparison with the FRFs of the sound structure, making possible to identify, to localize and quantify a structural damage. The activities, presented in the paper, mostly focused on a new FRFs processing technique based on the determining of a representative "Damage Index" for identifying and analysing damage both on real scale aeronautical structural components, like large-scale fuselage reinforced panels, and on aeronautical composite panels. Besides it has been carried out a dedicated neural network algorithm aiming at obtaining a "recognition-based learning"; this kind of learning methodology permits to train the neural network in order to let it recognises only "positive" examples discarding as a consequence the "negative" ones. Within the structural NDT a "positive" example means "healthy" state of the analysed structural component and, obviously, a "negative" one means a "damaged" or perturbed state. From an architectural point of view piezoceramic patches have been tested as actuators and sensors. Besides it has been used a laser-scanning vibrometer system to validate the behaviour of the piezoceramic patches.

  7. Modeling Spacecraft Fuel Slosh at Embry-Riddle Aeronautical University

    Science.gov (United States)

    Schlee, Keith L.

    2007-01-01

    As a NASA-sponsored GSRP Fellow, I worked with other researchers and analysts at Embry-Riddle Aeronautical University and NASA's ELV Division to investigate the effect of spacecraft fuel slosh. NASA's research into the effects of fuel slosh includes modeling the response in full-sized tanks using equipment such as the Spinning Slosh Test Rig (SSTR), located at Southwest Research Institute (SwRI). NASA and SwRI engineers analyze data taken from SSTR runs and hand-derive equations of motion to identify model parameters and characterize the sloshing motion. With guidance from my faculty advisor, Dr. Sathya Gangadharan, and NASA flight controls analysts James Sudermann and Charles Walker, I set out to automate this parameter identification process by building a simple physical experimental setup to model free surface slosh in a spherical tank with a simple pendulum analog. This setup was then modeled using Simulink and SimMechanics. The Simulink Parameter Estimation Tool was then used to identify the model parameters.

  8. Calculations of reactive turbulent flows in aeronautical chambers

    Science.gov (United States)

    Caillau, P.; Dupoirieux, F.

    1993-02-01

    The progress which was recently achieved in the modeling of turbulent combustion for applications to propulsion are described. The averaged equations of reactive turbulent flows are given, then the Probabilist EUlerian Langrangian model (PEUL) intended for the calculation of the average source terms of categories and of enthalpy are presented. The possibility of taking into account by this model the reactional mechanisms to several categories is applied to the prediction of the pollutants and in particular to the calculation of thermal NO. In order to obtain the best possible prediction of the chemical composition and the temperature, three total mechanisms of oxidation of methane are successively coupled with the PEUL model and their results compared. Two applications are then studied. The first application is a premixed flame stabilized by a hot gas flow. The computation results are compared with the experimental results obtained with ONERA and present a suitable agreement, in particular with regard to the profiles of thermal NO. The second concerns a portion of an annular aeronautical chamber. The comparison of the average production rates obtained with a model of turbulent combustion with rapid chemistry and with the PEUL model highlights, in this case, the importance of not making the hypothesis of rapid chemistry.

  9. Crack path in aeronautical titanium alloy under ultrasonic torsion loading

    Directory of Open Access Journals (Sweden)

    A. Nikitin

    2016-01-01

    Full Text Available This paper discusses features of fatigue crack initiation and growth in aeronautical VT3-1 titanium alloy under pure torsion loading in gigacycle regime. Two materials: extruded and forged VT3-1 titanium alloys were studied. Torsion fatigue tests were performed up to fatigue life of 109 cycles. The results of the torsion tests were compared with previously obtained results under fully reversed axial loading on the same alloys. It has been shown that independently on production process as surface as well subsurface crack initiation may appear under ultrasonic torsion loading despite the maximum stress amplitude located at the specimen surface. In the case of surface crack initiation, a scenario of crack initiation and growth is similar to HCF regime except an additional possibility for internal crack branching. In the case of subsurface crack, the initiation site is located below the specimen surface (about 200 μm and is not clearly related to any material flaw. Internal crack initiation is produced by shear stress in maximum shear plane and early crack growth is in Mode II. Crack branching is limited in the case of internal crack initiation compared to surface one. A typical ‘fish-eye’ crack can be observed at the torsion fracture surface, but mechanism of crack initiation seems not to be the same than under axial fatigue loading.

  10. NDE for Material Characterization in Aeronautic and Space Applications

    Science.gov (United States)

    Baaklini, George Y.; Kautz, Harold E.; Gyekenyesi, Andrew L.; Abdul-Aziz, Ali; Martin, Richard E.

    2000-01-01

    This paper describes selected nondestructive evaluation (NDE) approaches that were developed or tailored at the NASA Glenn Research Center for characterizing advanced material systems. The emphasis is on high-temperature aerospace propulsion applications. The material systems include monolithic ceramics, superalloys, and high temperature composites. In the aeronautic area, the highlights are cooled ceramic plate structures for turbine applications, F-TiAl blade materials for low-pressure turbines, thermoelastic stress analysis (TSA) for residual stress measurements in titanium based and nickel based engine materials, and acousto ultrasonics (AU) for creep damage assessment in nickel-based alloys. In the space area, examples consist of cooled carbon-carbon composites for gas generator combustors and flywheel rotors composed of carbon fiber reinforced polymer matrix composites for energy storage on the international space station (ISS). The role of NDE in solving manufacturing problems, the effect of defects on structural behavior, and the use of NDE-based finite element modeling are discussed. NDE technology needs for improved microelectronic and mechanical systems as well as health monitoring of micro-materials and components are briefly discussed.

  11. An analysis of total quality management in Aeronautical Systems Division

    Science.gov (United States)

    Caudle, Mark D.

    1991-09-01

    This study investigated the major schools of thought on various aspects of quality management and quality improvement. Areas covered included definitions of waste and quality, views on the cost of quality, tools and techniques used for quality improvement, and management philosophies and frameworks for continuous improvement. In addition, this study analyzed the structure and training content of the current Total Quality Management program at Aeronautical Systems Division (ASD). Pre- and post-test surveys on employee attitudes toward organizational effectiveness were analyzed from the Advanced Cruise Missile System Program Office (SPO), the F-15 SPO, and the ASD Deputy Chief of Staff for Human Resources (ASD/DP). Data was supplemented with semi-structured, personal interviews with ASD personnel involved in TQM. Survey analysis showed that the ACM SPO significantly improved, ASD/DP significantly digressed, and the F-15 SPO remained basically consistent. This led to the conclusion that ASD allows too much flexibility in the implementation of TQM in the three-letter organizations.

  12. NASA Ames Sustainability Initiatives: Aeronautics, Space Exploration, and Sustainable Futures

    Science.gov (United States)

    Grymes, Rosalind A.

    2015-01-01

    In support of the mission-specific challenges of aeronautics and space exploration, NASA Ames produces a wealth of research and technology advancements with significant relevance to larger issues of planetary sustainability. NASA research on NexGen airspace solutions and its development of autonomous and intelligent technologies will revolutionize both the nation's air transporation systems and have applicability to the low altitude flight economy and to both air and ground transporation, more generally. NASA's understanding of the Earth as a complex of integrated systems contributes to humanity's perception of the sustainability of our home planet. Research at NASA Ames on closed environment life support systems produces directly applicable lessons on energy, water, and resource management in ground-based infrastructure. Moreover, every NASA campus is a 'city'; including an urbanscape and a workplace including scientists, human relations specialists, plumbers, engineers, facility managers, construction trades, transportation managers, software developers, leaders, financial planners, technologists, electricians, students, accountants, and even lawyers. NASA is applying the lessons of our mission-related activities to our urbanscapes and infrastructure, and also anticipates a leadership role in developing future environments for living and working in space.

  13. Aeronautics Education, Research, and Industry Alliance (AERIAL) Year 2 Report and Year 3 Proposal

    Science.gov (United States)

    Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, Geroge; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; Tarry, Scott E.; Vlasek, Karisa D.

    2003-01-01

    The Aeronautics Education, Research, and Industry Alliance (AERIAL): a comprehensive, multi-faceted NASA EPSCoR 2000 initiative, contributes to the strategic research and technology priorities of NASA while intensifying Nebraska s rapidly growing aeronautics research and development endeavors. AERIAL enables Nebraska researchers to: (a) continue strengthening their collaborative relationships with NASA Field Centers, Codes, and Enterprises; (b) increase the capacity of higher education throughout Nebraska to invigorate and expand aeronautics research; and (c) expedite the development of aeronautics-related research infrastructure and industry in the state. This report contains a summary of AERIAL's activities and accomplishments during the second year of implementation. The AERIAL Year 3 proposal is also included.

  14. IPv6 Test Bed for Testing Aeronautical Applications

    Science.gov (United States)

    Wilkins, Ryan; Zernic, Michael; Dhas, Chris

    2004-01-01

    Aviation industries in United States and in Europe are undergoing a major paradigm shift in the introduction of new network technologies. In the US, NASA is also actively investigating the feasibility of IPv6 based networks for the aviation needs of the United States. In Europe, the Eurocontrol lead, Internet Protocol for Aviation Exchange (iPAX) Working Group is actively investigating the various ways of migrating the aviation authorities backbone infrastructure from X.25 based networks to an IPv6 based network. For the last 15 years, the global aviation community has pursued the development and implementation of an industry-specific set of communications standards known as the Aeronautical Telecommunications Network (ATN). These standards are now beginning to affect the emerging military Global Air Traffic Management (GATM) community as well as the commercial air transport community. Efforts are continuing to gain a full understanding of the differences and similarities between ATN and Internet architectures as related to Communications, Navigation, and Surveillance (CNS) infrastructure choices. This research paper describes the implementation of the IPv6 test bed at NASA GRC, and Computer Networks & Software, Inc. and these two test beds are interface to Eurocontrol over the IPv4 Internet. This research work looks into the possibility of providing QoS performance for Aviation application in an IPv6 network as is provided in an ATN based network. The test bed consists of three autonomous systems. The autonomous system represents CNS domain, NASA domain and a EUROCONTROL domain. The primary mode of connection between CNS IPv6 testbed and NASA and EUROCONTROL IPv6 testbed is initially a set of IPv6 over IPv4 tunnels. The aviation application under test (CPDLC) consists of two processes running on different IPv6 enabled machines.

  15. Liquid polyimide as a substrate for aeronautical sensor systems

    Science.gov (United States)

    Schwerter, Martin; Hecht, Lars; Koch, Eugen Viktor; Leester-Schädel, Monika; Büttgenbach, Stephanus; Dietzel, Andreas

    2015-03-01

    Using more and more controlled systems in future aircraft the need of flexible sensors to be applied on curved aircraft structures increases. An appropriate substrate material for such flexible sensors is polyimide, which is available both as ready-made foil and as liquid polyimide to be spun-on. Latest results in producing and processing of polyimide layers with a thickness of down to 1 μm including designs for thin foil sensors are presented respectively. The successful processing of liquid polyimide is outlined first including the spin-on procedure, soft bake and curing for polymerization. Parameters for spin-on volume and rotation speed on glass substrates along with a comparison with ordinary polyimide foil are presented. High-precision structuring of the polyimide layer is performed either by etching (wet-etching as well as dry etching in a barrel etcher) or ablative removal using a femtosecond laser. In combination with a layer of silicon nitride as an inorganic diffusion barrier a reliable protection for water tunnel experiments can be realized. The fabrication of a protection layer and test results in water with protected sensors are presented. The design of a hot-film anemometric sensor array made on spin-on polyimide is demonstrated. With a thickness of down to 7 μm the sensors can be applied on the surface of wind tunnel models and water tunnel models without impacting the flow substantially. Additionally both the concept and recent results of a silicon sensor integrated in a polyimide foil substrate that can measure pressure as a complementary measurand for aeronautics are illustrated.

  16. The Aeronautics Education, Research, and Industry Alliance (AERIAL) 2002 Report. UNO Aviation Monograph Series. UNOAI Report.

    Science.gov (United States)

    Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, George; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; O'Neil, Patrick D.; Tarry, Scott E.; Vlasek, Karisa D.

    This document contains four papers on aeronautics education, research, and partnerships that partly supported through the Aeronautics Education, Research, and Industry Alliance (AERIAL). The paper "2002 AERIAL Monograph" (Brent D. Bowen, Jocelyn S. Nickerson, Mary M. Fink, et al.) presents an overview of research and development in the following…

  17. Sectoral Innovation Performance in the Space and Aeronautics Sectors. final report. Task 1

    NARCIS (Netherlands)

    Giessen, A.M. van der; Poel, M.

    2011-01-01

    The Space and Aeronautics Sectors are high tech manufacturing sectors. Between Space and Aeronautics Sectors are linkages and parallels. All major systems assemblers are active in both sectors. Examples are EADS but also Boeing, BAE Systems and manufacturers of propulsion systems and other component

  18. 78 FR 22595 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-04-16

    ... Concerning the Use of Airport Revenue, published in the Federal Register on February 16, 1999 (64 FR 7696... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... land-use assurance that requires the property to be used for an aeronautical purpose. The subject...

  19. 78 FR 79059 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-12-27

    ... the Use of Airport Revenue, published in the Federal Register on February 16, 1999 (64 FR 7696). This... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... assurance that requires the property to be used for an aeronautical purpose. The property was...

  20. 78 FR 63279 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-10-23

    ... the Use of Airport Revenue, published in the Federal Register on February 16, 1999 (64 FR 7696... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... before modifying the land-use assurance that requires the property to be used for an aeronautical...

  1. 78 FR 41823 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-07-11

    ... FR 7696). Parcel 108: A parcel of land being part of the Southeast Quarter of the Northeast Quarter... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... assurance that requires the property to be used for an aeronautical purpose. The two parcels proposed to...

  2. 78 FR 59753 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-09-27

    ... Register on February 16, 1999 (64 FR 7696). This notice announces that the FAA is considering the release... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... land-use assurance that requires the property to be used for an aeronautical purpose. The property...

  3. 78 FR 41822 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-07-11

    ... in the Federal Register on February 16, 1999 (64 FR 7696). Property Description: within Section 12... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... assurance that requires the property to be used for an aeronautical purpose. The property was acquired...

  4. 76 FR 6827 - Public Availability of the National Aeronautic and Space Administration FY 2010 Service Contract...

    Science.gov (United States)

    2011-02-08

    ... SPACE ADMINISTRATION Public Availability of the National Aeronautic and Space Administration FY 2010 Service Contract Inventory AGENCY: National Aeronautic and Space Administration. ACTION: Notice of public... Administration (NASA) is publishing this notice to advise the public of the availability of its FY 2010...

  5. 78 FR 13383 - Public Availability of the National Aeronautics and Space Administration FY 2012 Service Contract...

    Science.gov (United States)

    2013-02-27

    ... SPACE ADMINISTRATION Public Availability of the National Aeronautics and Space Administration FY 2012... Administration. ACTION: Notice of Public Availability of the FY 2012 Service Contract Inventory, PSC codes... National Aeronautics and Space Administration (NASA) is publishing this notice to advise the public of...

  6. Aeronautics. An Educator's Guide with Activities in Science, Mathematics, and Technology Education: What Pilot, Astronaut, or Aeronautical Engineer didn't Start out with a Toy Glider?

    Science.gov (United States)

    Biggs, Pat (Editor); Huetter, Ted (Editor)

    1998-01-01

    Welcome to the exciting world of aeronautics. The term aeronautics originated in France, and was derived from the Greek words for "air" and "to sail." It is the study of flight and the operation of aircraft. This educator guide explains basic aeronautical concepts, provides a background in the history of aviation, and sets them within the context of the flight environment (atmosphere, airports, and navigation). The activities in this guide are designed to be uncomplicated and fun. They have been developed by NASA Aerospace Education Services Program specialists, who have successfully used them in countless workshops and student programs around the United States. The activities encourage students to explore the nature of flight, and experience some real-life applications of mathematics, science, and technology. The subject of flight has a wonderful power to inspire learning.

  7. A geostationary satellite system for mobile multimedia applications using portable, aeronautical and mobile terminals

    Science.gov (United States)

    Losquadro, G.; Luglio, M.; Vatalaro, F.

    1997-01-01

    A geostationary satellite system for mobile multimedia services via portable, aeronautical and mobile terminals was developed within the framework of the Advanced Communications Technology Service (ACTS) programs. The architecture of the system developed under the 'satellite extremely high frequency communications for multimedia mobile services (SECOMS)/ACTS broadband aeronautical terminal experiment' (ABATE) project is presented. The system will be composed of a Ka band system component, and an extremely high frequency band component. The major characteristics of the space segment, the ground control station and the portable, aeronautical and mobile user terminals are outlined.

  8. Aeronautical Engineering: A Continuing Bibliography with Indexes, Supplement 410. Supplement 410

    Science.gov (United States)

    1999-01-01

    This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles. Each entry in the publication consists of a standard bibliographic citation accompanied, in most cases, by an abstract.

  9. Exploration of Risks in Autonomous Decision-Making Applied to Aeronautics

    Data.gov (United States)

    National Aeronautics and Space Administration — Prior research into metrics and design for autonomy were presented. At this time, the prospect of adding significant autonomous decision-making on a piloted...

  10. Combustion/Emission Species Monitoring Ground and Flight Aeronautical Research Using a Gas Microsensor Array Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The goal of this program is to develop a miniaturized and in-situ operated gas microsensor array for the real time monitoring of chemical composition of turbine...

  11. Combustion/Emission Species Monitoring Ground and Flight Aeronautical Research Using a Gas Microsensor Array Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Makel Engineering, Inc. (MEI) and the Ohio State University (OSU) propose to develop high sensitivity, miniaturized and in-situ operated gas sensors for the real...

  12. 14 CFR 61.313 - What aeronautical experience must I have to apply for a sport pilot certificate?

    Science.gov (United States)

    2010-01-01

    ... apply for a sport pilot certificate? 61.313 Section 61.313 Aeronautics and Space FEDERAL AVIATION... GROUND INSTRUCTORS Sport Pilots § 61.313 What aeronautical experience must I have to apply for a sport... aeronautical experience you must have to apply for a sport pilot certificate: If you are applying for a...

  13. 14 CFR 300.13 - Permanent disqualification of former Civil Aeronautics Board members and employees and DOT...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Permanent disqualification of former Civil Aeronautics Board members and employees and DOT employees from matters in which they personally participated. 300.13 Section 300.13 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF...

  14. 77 FR 40405 - Notice of a Non-Aeronautical Land-Use Change Effecting the Quitclaim Deed and Federal Grant...

    Science.gov (United States)

    2012-07-09

    ... Federal Aviation Administration Notice of a Non-Aeronautical Land-Use Change Effecting the Quitclaim Deed... Aviation Administration, DOT. ACTION: Notice of a Non-Aeronautical Land-Use Change. SUMMARY: The Federal...-aeronautical land- use change for approximately 38 acres of airport property at Delano Municipal...

  15. 77 FR 13173 - Notice of a Non-Aeronautical Land-Use Change Effecting the Quitclaim Deed and Federal Grant...

    Science.gov (United States)

    2012-03-05

    ... Federal Aviation Administration Notice of a Non-Aeronautical Land-Use Change Effecting the Quitclaim Deed... Administration, DOT. ACTION: Notice of a Non-aeronautical land-use change. SUMMARY: The Federal Aviation Administration (FAA) proposes to rule and invites public comment on the application for a non-aeronautical...

  16. A Glimpse of Scientific Research on Fundamental Problems of Military and Civil Aeronautics

    Science.gov (United States)

    1939-01-01

    Among the outstanding accomplishments of the last century is man's conquest of the air. That conquest began in 1903 when the Wright brothers made the first successful flight of an airplane at Kitty Hawk, N. C. Five years later the United States Government purchased its first airplane for the use of the Army, and began the training of officers for military flying. During the years immediately preceding the outbreak of the World War the Government and a meager aircraft industry had made important progress, but the Government, practically the only customer, had purchased less than 100 airplanes. In the meantime, leading European nations, sensing acutely the potentialities of aircraft in warfare, had made greater progress and had begun laying the foundations for the new science of aeronautics. The World War gave a remarkable impetus to the development of aeronautics and emphasized the need for organized research on the fundamental problems of flight. By act of Congress approved March 3, 1915, the National Advisory Committee for Aeronautics was created and charged with the duty of supervising, directing, and conducting fundamental scientific research and experiment in aeronautics. With the farsighted support of the Congress the Committee has led the world in the development of unique aeronautical research facilities in its laboratories at Langley Field, Va. The research programs include problems initiated by the Committee and its subcommittees and also investigations requested by the Army, the Navy, and the Civil Aeronautics Authority. The results of researches conducted under one control, serve without duplication of effort, the needs of all branches of aviation, civil and military, and exert a profound influence on the progress of aeronautics by improving the performance, efficiency, and safety of aircraft. A brief description of the results of some of the committee's researches and of the equipment employed will be found in the following pages.

  17. An application of characteristic function in order to predict reliability and lifetime of aeronautical hardware

    Science.gov (United States)

    Żurek, Józef; Kaleta, Ryszard; Zieja, Mariusz

    2016-06-01

    The forecasting of reliability and life of aeronautical hardware requires recognition of many and various destructive processes that deteriorate the health/maintenance status thereof. The aging of technical components of aircraft as an armament system proves of outstanding significance to reliability and safety of the whole system. The aging process is usually induced by many and various factors, just to mention mechanical, biological, climatic, or chemical ones. The aging is an irreversible process and considerably affects (i.e. reduces) reliability and lifetime of aeronautical equipment. Application of the characteristic function of the aging process is suggested to predict reliability and lifetime of aeronautical hardware. An increment in values of diagnostic parameters is introduced to formulate then, using the characteristic function and after some rearrangements, the partial differential equation. An analytical dependence for the characteristic function of the aging process is a solution to this equation. With the inverse transformation applied, the density function of the aging of aeronautical hardware is found. Having found the density function, one can determine the aeronautical equipment's reliability and lifetime. The in-service collected or the life tests delivered data are used to attain this goal. Coefficients in this relationship are found using the likelihood function.

  18. The "Apollo" of Aeronautics: NASA's Aircraft Energy Efficiency Program, 1973-1987

    Science.gov (United States)

    Bowles, Mark D.

    2010-01-01

    In fall 1975, 10 distinguished United States Senators from the Aeronautical and Space Sciences Committee summoned a group of elite aviation experts to Washington, DC. The Senators were holding hearings regarding the state of the American airline industry, which was struggling in the wake of the 1973 Arab oil embargo and the dramatically increasing cost of fuel. Providing testimony were presidents or vice presidents of United Airlines, Boeing, Pratt & Whitney, and General Electric. Other witnesses included high-ranking officials from the National Aeronautics and Space Administration (NASA), the U.S. Air Force, and the American Institute of Aeronautics and Astronautics. Their Capitol Hill testimony painted a bleak economic picture, described in phrases that included immediate crisis condition, long-range trouble, serious danger, and economic dislocation.

  19. 77 FR 27663 - Airworthiness Directives; Aeronautical Accessories, Inc. High Landing Gear Forward Crosstube...

    Science.gov (United States)

    2012-05-11

    ... Accessories, Inc. High Landing Gear Forward Crosstube Assembly AGENCY: Federal Aviation Administration (FAA... directive (AD) for Aeronautical Accessories, Inc. (AAI) high landing gear forward crosstube assemblies... crosstubes. The proposed actions are intended to prevent failure of a crosstube, collapse of the landing...

  20. 77 FR 5420 - Airworthiness Directives; Aeronautical Accessories Inc. High Landing Gear Aft Crosstube Assembly

    Science.gov (United States)

    2012-02-03

    ... Accessories Inc. High Landing Gear Aft Crosstube Assembly AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for the Aeronautical Accessories Inc. (AAI) High Landing Gear Aft Crosstube Assembly (aft... proposed actions are intended to prevent failure of a crosstube, collapse of the landing gear,...

  1. 76 FR 485 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-01-05

    ... System Design Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086... Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G Airplanes AGENCY... revising the FAA- approved maintenance program by incorporating new airworthiness limitations for fuel...

  2. 76 FR 41647 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-07-15

    ... Register on January 5, 2011 (76 FR 485). That NPRM proposed to continue to require revising the maintenance... Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G Airplanes AGENCY... revising the FAA-approved maintenance program by incorporating new airworthiness limitations for fuel...

  3. Engineer in charge: A history of the Langley Aeronautical Laboratory, 1917-1958

    Science.gov (United States)

    Hansen, James R.

    1986-01-01

    A history is presented by using the most technologically significant research programs associated with the Langley Aeronautical Laboratory from 1917 to 1958 and those programs that, after preliminary research, seemed best to illustrate how the laboratory was organized, how it works, and how it cooperated with industry and the military.

  4. 75 FR 36722 - Aeronautics Science and Technology Subcommittee; Committee on Technology; National Science and...

    Science.gov (United States)

    2010-06-28

    ... Office of Science and Technology Policy's NSTC Web site at: http://www.whitehouse.gov/administration/eop... From the Federal Register Online via the Government Publishing Office OFFICE OF SCIENCE AND TECHNOLOGY POLICY Aeronautics Science and Technology Subcommittee; Committee on Technology; National...

  5. 78 FR 36013 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-06-14

    ... construction of a hotel on the subject 3.03-acre parcel. The aforementioned land is not needed for aeronautical... the construction of a hotel on the subject property. Fair Market Value will be obtained from a long term lease with hotel owner. The use of the revenue generated from the lease of the airport...

  6. Achieving QoS for Aeronautical Telecommunication Networks over Differentiated Services

    Science.gov (United States)

    Bai, Haowei; Atiquzzaman, Mohammed; Ivancic, William

    2001-01-01

    Aeronautical Telecommunication Network (ATN) has been developed by the International Civil Aviation Organization to integrate Air-Ground and Ground-Ground data communication for aeronautical applications into a single network serving Air Traffic Control and Aeronautical Operational Communications. To carry time critical information required for aeronautical applications, ATN provides different Quality of Services (QoS) to applications. ATN has therefore, been designed as a standalone network which implies building an expensive separate network for ATN. However, the cost of operating ATN can be reduced if it can be run over a public network such as the Internet. Although the current Internet does not provide QoS, the next generation Internet is expected to provide QoS to applications. The objective of this paper is to investigate the possibility of providing QoS to ATN applications when it is run over the next generation Internet. Differentiated Services (DiffServ), one of the protocols proposed for the next generation Internet, will allow network service providers to offer different QoS to customers. Our results show that it is possible to provide QoS to ATN applications when they run over a DiffServ backbone.

  7. Aeronautical education and research at the Swiss Institute of Technology in Zurich

    Science.gov (United States)

    Karner, L; Ackeret, J

    1931-01-01

    Progress in the scientific and practical fields of aviation has caused the Swiss Institute of Technology to organize lectures and practical training courses in all three branches of aeronautics and to found centers of scientific research, laboratories, etc., in order to supply the government and industries with scientifically and technically trained engineers.

  8. Comparison of Marketing Techniques to Enroll Females at a Major Aeronautical University

    Science.gov (United States)

    Cross, David Scott

    2012-01-01

    Traditionally, industries belonging to the science, technology, engineering, and mathematics (STEM) fields are dominated by males. Recruitment and enrollment of females for STEM fields have become an issue among universities specializing in fields such as aviation and aeronautics. The research problem for this study was that marketing departments…

  9. 77 FR 21404 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... (72 FR 67998)) Safair and Lockheed Martin Aeronautics Company (LM Aero) concurred with the proposed... November 14, 2007 (72 FR 64005) (corrected December 3, 2007 (72 FR 67998)). That NPRM proposed to require... (72 FR 64005, November 14, 2007; corrected December ] 3, 2007 (72 FR 67998)) and the FAA's response...

  10. 78 FR 19355 - Announcement of Charter Renewal of the Radio Technical Commission for Aeronautics (RTCA), Inc.

    Science.gov (United States)

    2013-03-29

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Announcement of Charter Renewal of the Radio Technical Commission for Aeronautics (RTCA), Inc. SUMMARY: The FAA is issuing this notice to advise the public of the charter...

  11. 78 FR 52841 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Lockheed Martin Corporation/Lockheed Martin Aeronautics Company requested that we revise the NPRM (77 FR... other publications listed in this AD as of August 26, 2005 (70 FR 42262, July 22, 2005). ADDRESSES: For..., Amendment 39-14190 (70 FR 42262, July 22, 2005). AD 2005-15-01 applied to the specified products. The...

  12. [Toxological problems inherent in varnish and paint products used in aeronautics].

    Science.gov (United States)

    Cianetti, E; Bancheri, C

    1977-12-15

    Paint products and the need for their employment on aircraft and spacecraft are described and reference is made to the types of poisoning that may arise from their application. The main solvents and diluents are listed, together with their toxicological features. Lastly, mention is made of technical products required by the aeronautical regulations, the dangers associated with them, and the preventive measures required.

  13. 78 FR 73919 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-12-09

    ... Concerning the Use of Airport Revenue, published in the Federal Register on February 16, 1999 (64 FR 7696... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... 30 days before modifying the land-use assurance that requires the property to be used for...

  14. 78 FR 10247 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-02-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... be published in the Federal Register 30 days before modifying the land-use assurance that...

  15. 78 FR 10248 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-02-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... be published in the Federal Register 30 days before modifying the land-use assurance that...

  16. 78 FR 38090 - Public Notice for Waiver of Aeronautical Land-Use Assurance

    Science.gov (United States)

    2013-06-25

    ... FR 7696). Tract 1--Subject Portion of Parcel G (Legal Description) That part of the Southwest Quarter... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance AGENCY... be published in the Federal Register 30 days before modifying the land-use assurance that...

  17. A Portfolio Analysis Tool for Measuring NASAs Aeronautics Research Progress toward Planned Strategic Outcomes

    Science.gov (United States)

    Tahmasebi, Farhad; Pearce, Robert

    2016-01-01

    Description of a tool for portfolio analysis of NASA's Aeronautics research progress toward planned community strategic Outcomes is presented. The strategic planning process for determining the community Outcomes is also briefly described. Stakeholder buy-in, partnership performance, progress of supporting Technical Challenges, and enablement forecast are used as the criteria for evaluating progress toward Outcomes. A few illustrative examples are also presented.

  18. 14 CFR 43.17 - Maintenance, preventive maintenance, and alterations performed on U.S. aeronautical products by...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Maintenance, preventive maintenance, and... Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION § 43.17 Maintenance, preventive maintenance,...

  19. Development of nonlinear acoustic propagation analysis tool toward realization of loud noise environment prediction in aeronautics

    International Nuclear Information System (INIS)

    Shown in this paper is an introduction of a prediction tool for the propagation of loud noise with the application to the aeronautics in mind. The tool, named SPnoise, is based on HOWARD approach, which can express almost exact multidimensionality of the diffraction effect at the cost of back scattering. This paper argues, in particular, the prediction of the effect of atmospheric turbulence on sonic boom as one of the important issues in aeronautics. Thanks to the simple and efficient modeling of the atmospheric turbulence, SPnoise successfully re-creates the feature of the effect, which often emerges in the region just behind the front and rear shock waves in the sonic boom signature

  20. A Novel Onboard-gateway-based Mechanism to Improve TCP Performance in Aeronautical Satellite Networks

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The IP-based networks on aircraft serve to support Internet services via satellites. However, in aeronautical satellite hybrid networks, the TCP protocol performance often deteriorates due to improper decreases and slow recovery of the congestion window. This paper proposes a window size determination and notification mechanism, onboard-gateway-based mechanism (OGBM), which is based on the onboard gateway in the networks on aircraft. A cross-layer approach is adopted by the onboard gateway to obtain the satellite link bandwidth information. And then, by the gateway, through changing the receiver's advertised window field in ACK packets, TCP sources are notified of the window size of each TCP source calculated on the ground of bandwidth delay product and flow numbers. The mechanism is able to avoid improper changes of TCP window and serve multiple users. Simulation results show that the mechanism with the fairness index close to 1 improves TCP performance in aeronautical satellite networks.

  1. A method for the analysis of the benefits and costs for aeronautical research and technology

    Science.gov (United States)

    Williams, L. J.; Hoy, H. H.; Anderson, J. L.

    1978-01-01

    A relatively simple, consistent, and reasonable methodology for performing cost-benefit analyses which can be used to guide, justify, and explain investments in aeronautical research and technology is presented. The elements of this methodology (labeled ABC-ART for the Analysis of the Benefits and Costs of Aeronautical Research and Technology) include estimation of aircraft markets; manufacturer costs and return on investment versus aircraft price; airline costs and return on investment versus aircraft price and passenger yield; and potential system benefits--fuel savings, cost savings, and noise reduction. The application of this methodology is explained using the introduction of an advanced turboprop powered transport aircraft in the medium range market in 1978 as an example.

  2. Development of nonlinear acoustic propagation analysis tool toward realization of loud noise environment prediction in aeronautics

    Energy Technology Data Exchange (ETDEWEB)

    Kanamori, Masashi, E-mail: kanamori.masashi@jaxa.jp; Takahashi, Takashi, E-mail: takahashi.takashi@jaxa.jp; Aoyama, Takashi, E-mail: aoyama.takashi@jaxa.jp [Japan Aerospace Exploration Agency, 7-44-1, Jindaijihigashi-machi, Chofu, Tokyo (Japan)

    2015-10-28

    Shown in this paper is an introduction of a prediction tool for the propagation of loud noise with the application to the aeronautics in mind. The tool, named SPnoise, is based on HOWARD approach, which can express almost exact multidimensionality of the diffraction effect at the cost of back scattering. This paper argues, in particular, the prediction of the effect of atmospheric turbulence on sonic boom as one of the important issues in aeronautics. Thanks to the simple and efficient modeling of the atmospheric turbulence, SPnoise successfully re-creates the feature of the effect, which often emerges in the region just behind the front and rear shock waves in the sonic boom signature.

  3. Implementation of Electronic Commerce in the Department of Defense and the National Aeronautics and Space Administration

    OpenAIRE

    Gray, Rodney A.

    1996-01-01

    President Clinton's Executive Memorandum of 26 October 1993 mandated that all Federal Government agencies implement Electronic Commerce (EC) in order to 'simplify and streamline the purchasing process.' Two agencies, the Department of Defense (DoD) and the National Aeronautics and Space Administration (NASA) employed divergent strategies and policies in implementing the President's Memorandum. The DoD pursued a strategy using an existing DoD electronic Commerce/Electronic Data Interchange (EC...

  4. Improving the vacuum-infusion process to manufacture high quality structural composite for the aeronautic market

    OpenAIRE

    Oliveira, Luís; Nunes, J. P.; F. Ferreira

    2014-01-01

    In last years, the vacuum-infusion processing method is being replacing successfully autoclave technologies to manufacture advanced composite structures, namely, the carbon-fibre reinforced plastic (CFRP) ones, for aeronautical and aerospace applications. The high investment associated with autoclave “prepreg” manufacturing has prompted interest in the use of alternative vacuum-infusion technologies that proven to be much more cost-effective processing methods. The present work presents, desc...

  5. Profile of software engineering within the National Aeronautics and Space Administration (NASA)

    Science.gov (United States)

    Sinclair, Craig C.; Jeletic, Kellyann F.

    1994-01-01

    This paper presents findings of baselining activities being performed to characterize software practices within the National Aeronautics and Space Administration. It describes how such baseline findings might be used to focus software process improvement activities. Finally, based on the findings to date, it presents specific recommendations in focusing future NASA software process improvement efforts. The findings presented in this paper are based on data gathered and analyzed to date. As such, the quantitative data presented in this paper are preliminary in nature.

  6. Power Output and Air Requirements of a Two-stroke Cycle Engine for Aeronautical Use

    Science.gov (United States)

    Paton, C R; Kemper, Carlton

    1927-01-01

    This investigation was undertaken to determine the pressure and amount of air necessary for satisfactory high-speed, two-stroke cycle operation and thus permit the power requirements of the air pump or blower to be determined. Based on power output and air requirement here obtained the two-stroke cycle engine would seem to be favorable for aeronautical use. No attempts were made to secure satisfactory operation at idling speeds.

  7. CHINESE JOURNAL OF AERONAUTICS STARTS TO SET A WEBSITE FOR EACH OF ITS PUBLISHED PAPER

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    @@ In order to better meet the need of current scientific and technological community on information exchange, by taking advantage of the Internet, beginning from the first issue of the year 2000, Chinese Journal of Aeronautics (CJA) and Acta Aeronautica et Astronautica Sinica (AAAS) start to set a website for each of their published papers, which is referred to as "Article URL" and is typeset and printed at the lowest left corner of the footnote on the first page of that paper.

  8. Analysis of technological innovation strategy for small and medium companies of the aeronautical sector

    OpenAIRE

    Marcela Barbosa de Moraes; Francisco Cristovão L. Melo; Edson A. A. Querido Oliveira; Arnoldo Souza Cabral

    2010-01-01

    The inherent risk in high-tech activity requires the construction of technological strategies that serve global strategy of the company. The present study aimed to characterize the technological position of small and medium technology-based companies of the aeronautical sector located in the Vale do Paraíba, and to examine whether these companies have a technological strategy formalized and disseminated. The adopted methodology was a descriptive exploratory research, carried out through in-de...

  9. Accessing the Global Value Chain in a Changing Institutional Environment: Comparing Aeronautics and Coffee

    OpenAIRE

    Cafaggi, Fabrizio; Swensson, Luana F. Joppert; Macedo, Ronaldo Porto; ANDREOTTI E SILVA, Tiago; Piterman Gross, Clarissa; Gabriel de Almeida, Lucila; Alves Ribeiro, Thiago

    2012-01-01

    The aim of the paper, based on empirical research in Brazil, is to investigate how supply chains have evolved over time, what factors have driven this evolution and also how a specific set of contractual practices along these chains is linked to access to international markets. The two selected case studies in the field of agriculture and aeronautics permit comparison between different modes of accessing international markets and GVCs; they illustrate the roles of transnational corporations a...

  10. Application of non destructive testing to the detection of aeronautical defects in composite structure

    OpenAIRE

    Munoz Cuartas, Victor; Perrin, Marianne; Pastor, Marie-Laetitia; Welemane, Hélène; Cantarel, Arthur; Karama, Moussa

    2013-01-01

    A study of two Non-destructive Testing methods (NDT) was carried out in specimens with different kinds of simulated defects. Ultrasonics test (US) and Infrared Thermography (IRT) were applied with the aim to evaluate the detectability and the accuracy of each method. These techniques have acquired great importance in the aeronautics industry because they allow to control the aerostructures without intervening in their physical and mechanical integrity. In the second part of the study, a compa...

  11. Databases on aerospace and aeronautics - Roles of NASA and its online retrieval took part -

    Science.gov (United States)

    Nakamoto, Hideshiro

    This article reports a great role of NASA's efforts in the course of developments on database, which exploited from abstract journals to machine readable files and from batch services to on-line services. An attention should be paid to that NASA contributed to industries with their technology through Regional Dissemination Centers. It also presents review of various databases in U.S. and Europe, such as bibliographies, computer programs, parts, satellites, newsletters on aerospace and aeronautics.

  12. Some vortical-flow flight experiments on slender aircraft that impacted the advancement of aeronautics

    Science.gov (United States)

    Lamar, John E.

    2009-08-01

    This paper highlights the three aerodynamic pillars of aeronautics; namely, theory/CFD, wind-tunnel experiments and flight tests, and notes that at any given time these three are not necessarily at the same level of maturity. After an initial history of these three pillars, the focus narrows to a brief history of some vortical-flow flight experiments on slender aircraft that have impacted the advancement of aeronautics in recent decades. They include the F-106, Concorde, SR-71, light-weight fighters (F-16, F/A-18), and F-16XL. These aircraft share in common the utilization of vortical flow and have flown at transonic speeds during a part of the flight envelope. Due to the vast amount of information from flight and CFD that has recently become available for the F-16XL, this aircraft is highlighted and its results detailed. Lastly, it is interesting to note that, though complicated, vortical flows over the F-16XL aircraft at subsonic speeds can be reliably and generally well-predicted with the current CFD flow solvers. However, these solvers still have some problems in matching flight pressure data at transonic speeds. That this problem has been highlighted is both an advancement in aeronautics and a tempting prize to those who would seek its solution.

  13. EFFECTS OF RICIAN FADING ON THE OPERATION OF AERONAUTICAL SATELLITE OFDM CHANNEL

    Directory of Open Access Journals (Sweden)

    Volodymyr Kharchenko

    2016-06-01

    Full Text Available The aim of this study is to investigate the influence of Rician fading on messages transmission via the aeronautical satellite OFDM channel with adaptive modulation and the development of a method for estimating the parameters of such a channel. Methods: To study the effect of Rician fading on messages transmission via aeronautical satellite OFDM channel with adaptive modulation the original model of the communication channel “Aircraft-Satellite-Ground Station” was built using software package MATLAB Sіmulіnk. The model includes “Aircraft Transmitter”, “Uplink/Downlink Path”, “Satellite Transponder”, and “Ground Station Receiver”. Each modulator block in the modulation bank performs convolutional coding and puncturing using code rates of ½, ²/3, and ¾, data interleaving, BPSK, QPSK, 16-QAM, and 64-QAM modulation. Results: Dependences of Estimated channel SNR on the ratio between the power of the LOS component and the diffuse component, on the downlink gain and delay in the diffuse component for different Doppler spectrum types and Doppler frequency offsets were obtained. A method for estimating the parameters of the satellite channels with fading was proposed. Discussion: The realistic model of aeronautical satellite OFDM link with Rician fading is developed for the first time on a basis of IEEE 802.11a standard and used for channel parameters evaluation. Proposed in this article approach can be considered as a method for estimating parameters of the channel with fading.

  14. Mobile Ad-Hoc Network Based Relaying Data System for Oceanic Flight Routes in Aeronautical Communications

    Directory of Open Access Journals (Sweden)

    Ho Dac Tu

    2009-04-01

    Full Text Available This paper proposes a reliable system to overcome the weakness of current the HF radio communicationsystem for oceanic aeronautical flight routes. This system uses only one aeronautical VHF channel with air-toairradio relay system based on local mobile Ad-hoc networks. For access to/from all aircrafts in the system, aTDMA (Time Division Multiple Access scheme is proposed to be used where each aircraft is assigned onetime slot during its presence in the system in order to transmit its own packet by itself or relay them usingneighbouring aircrafts. These packets contain aircraft position, ID, relative direction which are used to build arouting table at each aircraft. In addition, several algorithms for relaying packets; schemes to reduce thepacket-loss-ratio as well as to reduce the interference caused by surrounding aircrafts have been proposed.The simulations have shown the improvement of such proposals when examining system performance underreal air-traffic scenarios. This system strengthens the reliability of oceanic aeronautical communication andincreases situational awareness of all oceanic flights as an effective solution to operate more flights on theocean but in higher safety.

  15. Intellectual Property Rights at the National Aeronautics and Space Administration, Lewis Research Center

    Science.gov (United States)

    Williams, Vernon E.

    1994-01-01

    At a fundamental level, intellectual property is the core work product of a technical organization. The National Aeronautics and Space Administration (NASA), produces a variety of intellectual property including: patents, trademarks, data rights, copyright and rights associated with National Security. For a scientific organization to properly manage its work product it has to manage its intellectual property. This paper endeavors to describe how the intellectual property rights are generated and allocated at NASA. The author then goes on to discuss how the intellectual property might be managed to meet the objectives of program implementation, technology transfer and security.

  16. The production of the AGARD multilingual aeronautical dictionary using computer techniques

    Science.gov (United States)

    Wente, V. A.; Kirschbaum, J. C.; Kuney, J. H.

    1981-01-01

    The AGARD Multilingual Aeronautical Dictionary (MAD) contained 7,300 technical terms defined in English but also translated into nine other languages. The preparation work was performed by some 250 scientists and engineers who were members of AGARD and involved the translation skills of staff in many of the NATO nations. Nearly all the compilation and setting work for the book was done by computer and automatic photo-composition. The purpose of this publication is to record how the task was approached in terms of management planning.

  17. A Tool for Measuring NASA's Aeronautics Research Progress Toward Planned Strategic Community Outcomes

    Science.gov (United States)

    Tahmasebi, Farhad; Pearce, Robert

    2016-01-01

    Description of a tool for portfolio analysis of NASA's Aeronautics research progress toward planned community strategic Outcomes is presented. For efficiency and speed, the tool takes advantage of a function developed in Excels Visual Basic for Applications. The strategic planning process for determining the community Outcomes is also briefly discussed. Stakeholder buy-in, partnership performance, progress of supporting Technical Challenges, and enablement forecast are used as the criteria for evaluating progress toward Outcomes. A few illustrative examples of using the tool are also presented.

  18. Aeronautics Education, Research, and Industry Alliance (AERIAL) Progress Report and Proposal for Funding Continuation NASA Nebraska EPSCoR

    Science.gov (United States)

    Bowen, Brent; Fink, Mary; Gogos, George; Moussavi, Massoum; Nickerson, Jocelyn; Rundquist, Donald; Russell, Valerie; Tarry, Scott

    2004-01-01

    The Aeronautics Education, Research, and Industry Alliance (AERIAL), which began as a comprehensive, multi-faceted NASA EPSCoR 2000 initiative, has contributed substantially to the strategic research and technology priorities of NASA, while intensifying Nebraska's rapidly growing aeronautics research and development endeavors. AERIAL has enabled Nebraska researchers to: (a) continue strengthening their collaborative relationships with NASA Field Centers, Codes, and Enterprises; (b) increase the capacity of higher education throughout Nebraska to invigorate and expand aeronautics research; and (c) expedite the development of aeronautics-related research infrastructure and industry in the state. Nebraska has placed emphasis on successfully securing additional funds from non-EPSCoR and non-NASA sources. AERIAL researchers have aggressively pursued additional funding opportunities offered by NASA, industry, and other agencies. This report contains a summary of AERIAL's activities and accomplishments during its first three years of implementation.

  19. Electromagnetic Compatibility Studies: LTE BS vs. Aeronautical Radionavigation Services in 694-790 MHz Frequency Band

    Directory of Open Access Journals (Sweden)

    Stankevičius Evaldas

    2014-10-01

    Full Text Available This paper presents the sharing analysis of the 694–790 MHz frequency band for Mobile services IMT and Aeronautical radio-navigation services (ARNS using SEAMCAT (established by CEPT software based on the statistical simulation (Monte-Carlo method. In 2012 the World Radiocommunication Conference (WRC-12 decided to allocate the 694–790 MHz frequency band (the so-called 700 MHz band to mobile services IMT (excluding aeronautical mobile after WRC-15 conference. But this agreement raises electromagnetic compatibility problems, which should be solved until WRC-15 [1]. This study was carried out in two phases: first applying theoretical analysis, then statistical Monte-Carlo simulations with SEAMCAT software tool in order to verify results obtained in theoretical approach. Analytical calculations shows that the required protection distances between ARNS stations and the MS base stations are 132 km. The obtained results from SEAMCAT simulations indicate that separation distance should be above 100 km. These results illustrate that the systems are not electromagnetically compatible. The possible mitigation technic could be antenna pattern correction.

  20. Numerical prediction of heat affected layer in the EDM of aeronautical alloys

    Science.gov (United States)

    Izquierdo, B.; Plaza, S.; Sánchez, J. A.; Pombo, I.; Ortega, N.

    2012-10-01

    Electrical discharge machining is a popular non-traditional machining process, optimum for accurate machining of complex geometries in hard materials. EDM has been used for decades for machining pieces for the aeronautical industry, but surface integrity, and consequently the reliability of the machined parts have been questioned for long time due to the thermal nature of this machining process. In recent years, efforts have been put on modeling of the EDM process, being thermal modeling of the process one promising alternative. In a previous publication an original model of the EDM process was presented and it was used to predict material removal rate and surface finish for the EDM of steel. In the present article the capability of that modeling tool to characterize discharge properties and to predict recast layer distribution when EDMing an aeronautical alloy will be analyzed. EDM process of Inconel 718 has been studied and discharge properties have been obtained for four different EDM regimes. The capability of the model to reflect the behavior of more energetic regimes is discussed. Gathered information has been used to simulate the evolution of the recast layer generation process. Obtained results have been validated comparing them with experimental measurements, revealing a good correlation between predictions and experimental data. Finally, energetic efficiency of the discharge process has been simulated for the adjusted EDM regimes.

  1. National Aeronautics and Space Administration and the Indian Space Research Organisation Synthetic Aperture Radar Mission Concept

    Science.gov (United States)

    Bawden, G. W.; Rosen, P. A.; Dubayah, R.; Hager, B. H.; Joughin, I. R.

    2014-12-01

    The U.S. National Aeronautics and Space Administration and the Indian Space Research Organisation are planning a synthetic aperture radar (currently named NISAR) mission for launch in 2020. The mission is a dual L- and S-band polarimetric SAR satellite with a 12-day interferometric orbit and 240 km wide ground swath. The 3-year mission will have a circular sun synchronous orbit (6 am and 6 pm) with a 98° inclination and 747 km altitude that will provide systematic global coverage. Its primary science objectives are to: measure solid Earth surface deformation (earthquakes, volcanic unrest, land subsidence/uplift, landslides); track and understand cryosphere dynamics (glaciers, ice sheets, sea ice, and permafrost); characterize and track changes in vegetation structure and wetlands for understanding ecosystem dynamics and carbon cycle; and support global disaster response. We will describe the current mission concept: the satellite design/capabilities, spacecraft, launch vehicle, and data flow.

  2. Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences

    Directory of Open Access Journals (Sweden)

    Pablo Zuluaga-Ramírez

    2015-03-01

    Full Text Available We present an optical sensing methodology to estimate the fatigue damage state of structures made of carbon fiber reinforced polymer (CFRP, by measuring variations on the surface roughness. Variable amplitude loads (VAL, which represent realistic loads during aeronautical missions of fighter aircraft (FALSTAFF have been applied to coupons until failure. Stiffness degradation and surface roughness variations have been measured during the life of the coupons obtaining a Pearson correlation of 0.75 between both variables. The data were compared with a previous study for Constant Amplitude Load (CAL obtaining similar results. Conclusions suggest that the surface roughness measured in strategic zones is a useful technique for structural health monitoring of CFRP structures, and that it is independent of the type of load applied. Surface roughness can be measured in the field by optical techniques such as speckle, confocal perfilometers and interferometry, among others.

  3. Relay movement control for maintaining connectivity in aeronautical ad hoc networks

    Institute of Scientific and Technical Information of China (English)

    李杰; 孙志强; 师博浩; 宫二玲; 谢红卫

    2016-01-01

    As a new sort of mobile ad hoc network (MANET), aeronautical ad hoc network (AANET) has fleet-moving airborne nodes (ANs) and suffers from frequent network partitioning due to the rapid-changing topology. In this work, the additional relay nodes (RNs) is employed to repair the network and maintain connectivity in AANET. As ANs move, RNs need to move as well in order to re-establish the topology as quickly as possible. The network model and problem definition are firstly given, and then an online approach for RNs’ movement control is presented to make ANs achieve certain connectivity requirement during run time. By defining the minimum cost feasible moving matrix (MCFM), a fast algorithm is proposed for RNs’ movement control problem. Simulations demonstrate that the proposed algorithm outperforms other control approaches in the highly-dynamic environment and is of great potential to be applied in AANET.

  4. Interference Analysis Status and Plans for Aeronautical Mobile Airport Communications System (AeroMACS)

    Science.gov (United States)

    Kerczewski, Robert J.; Wilson, Jeffrey D.

    2010-01-01

    Interference issues related to the operation of an aeronautical mobile airport communications system (AeroMACS) in the C-Band (specifically 5091-5150 MHz) is being investigated. The issue of primary interest is co-channel interference from AeroMACS into mobile-satellite system (MSS) feeder uplinks. The effort is focusing on establishing practical limits on AeroMACS transmissions from airports so that the threshold of interference into MSS is not exceeded. The analyses are being performed with the software package Visualyse Professional, developed by Transfinite Systems Limited. Results with omni-directional antennas and plans to extend the models to represent AeroMACS more accurately will be presented. These models should enable realistic analyses of emerging AeroMACS designs to be developed from NASA Test Bed, RTCA 223, and European results.

  5. The impact of active controls technology on the structural integrity of aeronautical vehicles

    Science.gov (United States)

    Noll, Thomas E.; Austin, Edward; Donley, Shawn; Graham, George; Harris, Terry; Kaynes, Ian; Lee, Ben; Sparrow, James

    1993-01-01

    The findings of an investigation conducted under the auspices of The Technical Cooperation Program (TTCP) to assess the impact of active controls technology on the structural integrity of aeronautical vehicles and to evaluate the present state-of-the-art for predicting loads caused by a flight-control system modification and the resulting change in the fatigue life of the flight vehicle are summarized. Important points concerning structural technology considerations implicit in applying active controls technology in new aircraft are summarized. These points are well founded and based upon information received from within the aerospace industry and government laboratories, acquired by sponsoring workshops which brought together experts from contributing and interacting technical disciplines, and obtained by conducting a case study to independently assess the state of the technology. The paper concludes that communication between technical disciplines is absolutely essential in the design of future high performance aircraft.

  6. Nondestructive Evaluation Approaches Developed for Material Characterization in Aeronautics and Space Applications

    Science.gov (United States)

    Baaklini, George Y.; Kautz, Harold E.; Gyekenyesi, Andrew L.; Abdul-Aziz, Ali; Martin, Richard E.

    2001-01-01

    At the NASA Glenn Research Center, nondestructive evaluation (NDE) approaches were developed or tailored for characterizing advanced material systems. The emphasis was on high-temperature aerospace propulsion applications. The material systems included monolithic ceramics, superalloys, and high-temperature composites. In the aeronautics area, the major applications were cooled ceramic plate structures for turbine applications, gamma-TiAl blade materials for low-pressure turbines, thermoelastic stress analysis for residual stress measurements in titanium-based and nickel-based engine materials, and acousto-ultrasonics for creep damage assessment in nickel-based alloys. In the space area, applications consisted of cooled carbon-carbon composites for gas generator combustors and flywheel rotors composed of carbon-fiber-reinforced polymer matrix composites for energy storage on the International Space Station.

  7. Researches and studies regarding brazed aluminium alloys microstructure used in aeronautic industry

    Directory of Open Access Journals (Sweden)

    A. Dimitrescu

    2015-04-01

    Full Text Available Brazing is applied to the merge of the pieces which are most required, tensile strength of the solder can reach high values. By brazing there can be assembled pieces of most metals and ferrous and nonferrous alloys, with high melting temperature. This paper presents an analysis of the microstructure of materials from a brazed merge of aluminum alloy L103 which is often used to produce pieces of aeronautical industry. Brazing material was performed using several technologies, and after examination of the microstructure of materials from the merge area it was established as optimal technology the technology which consist of pickling in Aloclene 100 solution with the deposition of filler material on both sides of the base material and the use of spectral acetylene and neutral flame.

  8. Proposed Development of NASA Glenn Research Center's Aeronautical Network Research Simulator

    Science.gov (United States)

    Nguyen, Thanh C.; Kerczewski, Robert J.; Wargo, Chris A.; Kocin, Michael J.; Garcia, Manuel L.

    2004-01-01

    Accurate knowledge and understanding of data link traffic loads that will have an impact on the underlying communications infrastructure within the National Airspace System (NAS) is of paramount importance for planning, development and fielding of future airborne and ground-based communications systems. Attempting to better understand this impact, NASA Glenn Research Center (GRC), through its contractor Computer Networks & Software, Inc. (CNS, Inc.), has developed an emulation and test facility known as the Virtual Aircraft and Controller (VAC) to study data link interactions and the capacity of the NAS to support Controller Pilot Data Link Communications (CPDLC) traffic. The drawback of the current VAC test bed is that it does not allow the test personnel and researchers to present a real world RF environment to a complex airborne or ground system. Fortunately, the United States Air Force and Navy Avionics Test Commands, through its contractor ViaSat, Inc., have developed the Joint Communications Simulator (JCS) to provide communications band test and simulation capability for the RF spectrum through 18 GHz including Communications, Navigation, and Identification and Surveillance functions. In this paper, we are proposing the development of a new and robust test bed that will leverage on the existing NASA GRC's VAC and the Air Force and Navy Commands JCS systems capabilities and functionalities. The proposed NASA Glenn Research Center's Aeronautical Networks Research Simulator (ANRS) will combine current Air Traffic Control applications and physical RF stimulation into an integrated system capable of emulating data transmission behaviors including propagation delay, physical protocol delay, transmission failure and channel interference. The ANRS will provide a simulation/stimulation tool and test bed environment that allow the researcher to predict the performance of various aeronautical network protocol standards and their associated waveforms under varying

  9. Damage analysis of composites integrated with RFID chip used in aeronautics

    Directory of Open Access Journals (Sweden)

    H-A. Alhas

    2013-01-01

    Full Text Available Purpose: A new approach to production process by direct integration of the RFID (Radio-frequency identification chips into the composite parts used during the manufacturing (moulding process of the composite parts has been presented. This research aims a new application of RFID technology and measurement of the resistance of RFID chips integrated into composite parts under X-ray diffraction beams and also impact choc (crash test. This work gives the actual results of an applied research carried out in laboratory (Supmeca-Paris scale and also in industrial scales carried out in the manufacturing department of the French aeronautic company (Eurocopter-Paris.Design/methodology/approach: Application of RFID technology in manufacturing of the composite parts is related to the continuous quality improvement of manufacturing company. Findings: RFID Chips integrated directly in the composite parts during the manufacturing process can improve the efficiency of the manufacturing process and also decrease the lead time and processing time. This application in manufacturing of the composite parts will enable to achieve success for the aeronautic companies.Research limitations/implications: In the future, Industrial companies can transform their manufacturing processes by applying RFID technology that increases manufacturing cycle time, maximize efficiency and eliminate unnecessary steps.Practical implications: Using RFID technology in production will help industrial companies and also customers reduce their time and operating costs significantly and increase employee productivity. This application can also decrease lead time and make faster progress toward their sustainability goals.Originality/value: A detail comparison was made between two approaches; conventional production system and new approach by integrating RFID in composite part. At the end of analysis, time saving in the production was calculated as 135 minutes (more than 2 hours by following real

  10. Concurrent Development and Certification of SOFTCOMAG 49AA Alloy for Aeronautical Applications

    Directory of Open Access Journals (Sweden)

    Ashok Kumar

    2012-01-01

    Full Text Available Softcomag 49AA alloy consisting of 49 wt per cent Fe, 49 wt. per cent Co and 2 wt per cent V is a soft magnetic alloy with a combination of very high saturation magnetisation and high magnetostriction and used for several aeronautical applications such as generators (stators and rotors, fixed iron moving armature units etc. Though this alloy is brittle in nature, it can be formed into hot rolled bars and cold rolled sheets by adopting suitable thermo mechanical treatments. In order to indigenise and subsequent type certification for aeronautical applications, the alloy was produced using 100 per cent virgin raw materials in a vacuum induction melting (VIM furnace which not only ensures substantial reduction of inclusions, but also the production of homogeneous alloy as a result of induction stirring. The chemical composition was examined and hot working parameters of the alloy were so optimised that they would result in the best combination of magnetic, physical and mechanical properties for the end use, which forms the central theme behind the developmental activity that was simultaneously covered by a comprehensive certification process. The material thus produced is subjected to stringent quality control checks in accordance with stipulated airworthiness norms. The paper discusses in detail the indigenisation efforts and airworthiness certification of the alloy Softcomag 49AA and its comparison with equivalent grades, namely PERMENDUR 49 and VACOFLUX 50.Defence Science Journal, 2012, 62(1, pp.67-72, DOI:http://dx.doi.org/10.14429/dsj.62.1093 

  11. The American Institute of Aeronautics and Astronautics pre-college outreach program

    Science.gov (United States)

    Bering, E.; Bacon, L.; Copper, K.; Hansen, L. J.; Sanchez, M.; Aiaa Precollege Outreach Committee

    Throughout the United States school child perceive science technology engineering and mathematics STEM as difficult boring and often irrelevant subjects The possible reasons for this problem are endlessly debated however the economic social and overall national importance of producing graduates who are technically literate and enthusiastic in their support of a rational scientific world should motivate many scientific and engineering societies around the world to develop outreach programs aimed at children ages 5-18 and corresponding support programs aimed at schools and teachers covering kindergarten through 12 th grade The American Institute of Aeronautics and Astronautics AIAA is among those organizations that have identified the need to educate students and teachers about STEM current events and their direct affects on the United States population a way that motivates both to get more involved The AIAA has established a pre-college outreach program that has several major elements that will be described in this paper These elements include a pre-college Educator Associate Membership program a program to award small development grants to class room teachers and Educator of the Year awards and recognition program mechanisms for sharing and encouraging innovative local support programs and two national workshop events The first workshop event Passport to the Future is held annually in conjunction with the Joint Propulsion Conference It is intended to provide summertime training in Aerospace science education to classroom

  12. Aeronautical Communications Research and Development Needs for Future Air Traffic Management Applications

    Science.gov (United States)

    Kerczewski, Robert J.

    2002-01-01

    Continuing growth in regional and global air travel has resulted in increasing traffic congestion in the air and on the ground. In spite of occasional temporary downturns due to economic recessions and catastrophic events, average growth rates of air travel have remained high since the 1960s. The resulting congestion, which constrains expansion of the air transportation industry, inflicts schedule delays and decreases overall system efficiency, creating a pressing need to develop more efficient methods of air traffic management (ATM). New ATM techniques, procedures, air space automation methods, and decision support tools are being researched and developed for deployment in time frames stretching from the next few years to the year 2020 and beyond. As these methods become more advanced and increase in complexity, the requirements for information generation, sharing and transfer among the relevant entities in the ATM system increase dramatically. However, current aeronautical communications systems will be inadequate to meet the future information transfer demands created by these advanced ATM systems. Therefore, the NASA Glenn Research Center is undertaking research programs to develop communication, methods and key technologies that can meet these future requirements. As part of this process, studies, workshops, testing and experimentation, and research and analysis have established a number of research and technology development needs. The purpose of this paper is to outline the critical research and technology needs that have been identified in these activities, and explain how these needs have been determined.

  13. Development of a 3-D model for eddy current testing: application for fastened structures in aeronautics

    International Nuclear Information System (INIS)

    One of the Eddy Current Testing issues in aeronautics is the inspection of fastened structures to detect flaws nearby rivets which can grow because of mechanical stress. EADS and the CEA LIST have started a collaborative work with the support of the Ile-de-France Region to develop a simulation tool of EC fastened structures testing, integrated to the CIVA platform, aimed at conceiving testing methods, optimizing and qualifying it. The volume integral method using the Green dyadics formalism has been chosen in order to get a fast resolution of Maxwell equations. A first milestone was to build a simulation model of multilayer structures testing, thanks to the use of the multilayer Green dyads. Because of the rivet volume, 60 times bigger than the one of a typical flaw, a large number of discretization cells are needed. Therefore an iterative method has been developed in order to numerically solve large calculation zones. Finally, the flaw response simulation mostly has to cope with a scale issue between the size of the rivet and the one of the flaw, the latter being much smaller in a direction than the former. The whole model has been experimentally validated and compared to other simulation models at the important development steps: multilayer configuration, iteration resolution, and flaw signature. (author)

  14. Sandwich Structured Composites for Aeronautics: Methods of Manufacturing Affecting Some Mechanical Properties

    Directory of Open Access Journals (Sweden)

    Aneta Krzyżak

    2016-01-01

    Full Text Available Sandwich panels are composites which consist of two thin laminate outer skins and lightweight (e.g., honeycomb thick core structure. Owing to the core structure, such composites are distinguished by stiffness. Despite the thickness of the core, sandwich composites are light and have a relatively high flexural strength. These composites have a spatial structure, which affects good thermal insulator properties. Sandwich panels are used in aeronautics, road vehicles, ships, and civil engineering. The mechanical properties of these composites are directly dependent on the properties of sandwich components and method of manufacturing. The paper presents some aspects of technology and its influence on mechanical properties of sandwich structure polymer composites. The sandwiches described in the paper were made by three different methods: hand lay-up, press method, and autoclave use. The samples of sandwiches were tested for failure caused by impact load. Sandwiches prepared in the same way were used for structural analysis of adhesive layer between panels and core. The results of research showed that the method of manufacturing, more precisely the pressure while forming sandwich panels, influences some mechanical properties of sandwich structured polymer composites such as flexural strength, impact strength, and compressive strength.

  15. The Education of Future Aeronautical Engineers: Conceiving, Designing, Implementing and Operating

    Science.gov (United States)

    Crawley, Edward F.; Brodeur, Doris R.; Soderholm, Diane H.

    2008-04-01

    This paper will outline answers to the two central questions regarding improving engineering education: (1) What is the full set of knowledge, skills, and attitudes that engineering students should possess as they leave the university, and at what level of proficiency? (2) How can we do better at ensuring that students learn these skills? The suggested answers lie within an innovative educational framework, the CDIO (conceive-design-implement-operate) Initiative. This initiative will be described along with the needs it meets, its goals, context, vision and pedagogical foundation. The first question is answered by the CDIO Syllabus and the process for reaching stakeholder consensus on the level of proficiency that students should attain in a given program. The second question is addressed through a best practice framework, which discusses curriculum design, design-implement experiences, teaching and learning, student assessment, program evaluation and faculty competence. Examples are provided of the implementation of best practices within the CDIO program in Aeronautics and Astronautics at the Massachusetts Institute of Technology (MIT).

  16. Finite Element Simulation of Low Velocity Impact Damage on an Aeronautical Carbon Composite Structure

    Science.gov (United States)

    Lemanle Sanga, Roger Pierre; Garnier, Christian; Pantalé, Olivier

    2016-06-01

    Low velocity barely visible impact damage (BVID) in laminated carbon composite structures has a major importance for aeronautical industries. This contribution leads with the development of finite element models to simulate the initiation and the propagation of internal damage inside a carbon composite structure due by a low velocity impact. Composite plates made from liquid resin infusion process (LRI) have been subjected to low energy impacts (around 25 J) using a drop weight machine. In the experimental procedure, the internal damage is evaluated using an infrared thermographic camera while the indentation depth of the face is measured by optical measurement technique. In a first time we developed a robust model using homogenised shells based on degenerated tri-dimensional brick elements and in a second time we decided to modelize the whole stacking sequence of homogeneous layers and cohesive interlaminar interfaces in order to compare and validate the obtained results. Both layer and interface damage initiation and propagation models based on the Hashin and the Benzeggagh-Kenane criteria have been used for the numerical simulations. Comparison of numerical results and experiments has shown the accuracy of the proposed models.

  17. A comparison of Boolean-based retrieval to the WAIS system for retrieval of aeronautical information

    Science.gov (United States)

    Marchionini, Gary; Barlow, Diane

    1994-01-01

    An evaluation of an information retrieval system using a Boolean-based retrieval engine and inverted file architecture and WAIS, which uses a vector-based engine, was conducted. Four research questions in aeronautical engineering were used to retrieve sets of citations from the NASA Aerospace Database which was mounted on a WAIS server and available through Dialog File 108 which served as the Boolean-based system (BBS). High recall and high precision searches were done in the BBS and terse and verbose queries were used in the WAIS condition. Precision values for the WAIS searches were consistently above the precision values for high recall BBS searches and consistently below the precision values for high precision BBS searches. Terse WAIS queries gave somewhat better precision performance than verbose WAIS queries. In every case, a small number of relevant documents retrieved by one system were not retrieved by the other, indicating the incomplete nature of the results from either retrieval system. Relevant documents in the WAIS searches were found to be randomly distributed in the retrieved sets rather than distributed by ranks. Advantages and limitations of both types of systems are discussed.

  18. Survivability of integrated PVDF film sensors to accelerated ageing conditions in aeronautical/aerospace structures

    International Nuclear Information System (INIS)

    This work validates the use of integrated polyvinylidene fluoride (PVDF) film sensors for dynamic testing, even after being subjected to UV-thermo-hygro-mechanical accelerated ageing conditions. The verification of PVDF sensors’ survivability in these environmental conditions, typically confronted by civil and military aircraft, is the main concern of the study. The evaluation of survivability is made by a comparison of dynamic testing results provided by the PVDF patch sensors subjected to an accelerated ageing protocol, and those provided by neutral non-aged sensors (accelerometers). The available measurements are the time-domain response signals issued from a modal analysis procedure, and the corresponding frequency response functions (FRF). These are in turn used to identify the constitutive properties of the samples by extraction of the modal parameters, in particular the natural frequencies. The composite specimens in this study undergo different accelerated ageing processes. After several weeks of experimentation, the samples exhibit a loss of stiffness, represented by a decrease in the elastic moduli down to 10%. Despite the ageing, the integrated PVDF sensors, subjected to the same ageing conditions, are still capable of providing reliable data to carry out a close followup of these changes. This survivability is a determinant asset in order to use integrated PVDF sensors to perform structural health monitoring (SHM) in the future of full-scale composite aeronautical structures. (paper)

  19. 76 FR 36954 - Public Notice for Waiver of Aeronautical Land-Use Assurance; Shell Lake Municipal Airport, Shell...

    Science.gov (United States)

    2011-06-23

    ... Federal Aviation Administration Public Notice for Waiver of Aeronautical Land-Use Assurance; Shell Lake Municipal Airport, Shell Lake, WI AGENCY: Federal Aviation Administration, DOT ACTION: Notice of intent of... to authorize the release of 0.101 acres of the airport property at the ] Shell Lake Municipal...

  20. 77 FR 36602 - Public Notice for Waiver for Aeronautical Land-Use Assurance at Saline County Regional Airport...

    Science.gov (United States)

    2012-06-19

    ... Federal Aviation Administration Public Notice for Waiver for Aeronautical Land-Use Assurance at Saline... and 4th Street. The parcel was originally acquired as part of a donation to the County of Saline in...: Mr. Mark Westbrook, Airport Chairman, Saline County Regional Airport Commission, P.O. Box...

  1. Designs that Fly: What the History of Aeronautics Tells Us about the Future of Design-Based Research in Education

    Science.gov (United States)

    O'Neill, D. Kevin

    2012-01-01

    For almost two decades, there has been growing interest in what design-based research (DBR) can contribute to both educational practice and theory. Since its introduction into the literature, this orientation to educational research has repeatedly been likened to aeronautical engineering as a way to clarify its nature and argue its potential. This…

  2. 78 FR 6401 - Public Notice for Release of Aeronautical Property at the Wilkes-Barre/Scranton International...

    Science.gov (United States)

    2013-01-30

    ... to the public road for a total of 16.42 acres. The Wilkes-Barre/Scranton International Airport will... INFORMATION: The FAA invites public comment on the release of land and right-of-way easements at the Wilkes... Federal Aviation Administration Public Notice for Release of Aeronautical Property at the Wilkes-...

  3. 77 FR 2605 - Public Notice for Waiver of Aeronautical Land-Use Assurance; Gerald R. Ford International Airport...

    Science.gov (United States)

    2012-01-18

    ... authorize the lease of the airport property. The proposal consists of 2 parcels of land with the lease... compatible with local commercial/ industrial zoning classification. The land was acquired under the FAA... allowing the airport to lease the property, since the land is no longer needed for aeronautical...

  4. The American Institute of Aeronautics and Astronautics pre-college outreach program

    Science.gov (United States)

    Bering, E. A.; Bacon, L.; Copper, K. K.; Hansen, L. J.; Sanchez, M. J.

    2008-12-01

    Many United States, school children perceive science, technology, engineering, and mathematics (STEM) as difficult, boring and often irrelevant subjects. The possible reasons for this problem are endlessly debated. However, the economic, social, and overall national importance of producing graduates who are technically literate and enthusiastic in their support of a rational scientific world is essential to our nation. This apparent STEM crisis should motivate the many scientific and engineering societies to develop STEM outreach programs aimed at students, parents, teachers and schools (grades K-12). The American Institute of Aeronautics and Astronautics (AIAA) is among those organizations that have identified the need to educate students and teachers about STEM current events and their direct effects on the United States population in a way that motivates both. The AIAA has established a pre-college outreach program that has several major elements that will be described in this paper. Elements focused on the teachers include a pre-college Educator Associate Membership program, classroom grants to support hands-on learning activities, Educator of the Year awards and recognition program and two national workshop events. The first workshop event, Passport to the Future, is held annually in conjunction with the Joint Propulsion Conference. It is intended to provide summertime training in Aerospace science education to classroom teachers, in conjunction with a national professional conference. The second workshop, Education Alley, is held in the fall in conjunction with the “Space” series of conferences. This program is aimed at direct outreach to local students in the conference host city, providing fun, interesting, and educational events that promote STEM. The AIAA also encourages and supports pre-college outreach activities sponsored by the local AIAA sections through leadership training, activity and material support.

  5. Grid Effects on LES Thermo-Acoustic Limit-Cycle of a Full Annular Aeronautical Engine

    Science.gov (United States)

    Wolf, Pierre; Gicquel, Laurent Y. M.; Staffelbach, Gabriel; Poinsot, Thierry

    Recent developments in large scale computer architectures allow Large Eddy Simulation (LES) to be considered for the prediction of turbulent reacting flows in geometries encountered in industry. To do so, various difficulties must be overcome and the first one is to ensure that proper meshes can be used for LES. Indeed, the quality of meshes is known to be a critical factor in LES of reacting flows. This issue becomes even more crucial when LES is used to compute large configurations such as full annular combustion chambers. Various analysis of mesh effects on LES results have been published before but all are limited to single-sector computational domains. However, real annular gas-turbine engines contain ten to twenty of such sectors and LES must also be used in such full chambers for the study of ignition or azimuthal thermo-acoustic interactions. Instabilities (mostly azimuthal modes involving the full annular geometry) remain a critical issue to aeronautical or power-generation industries and LES seems to be a promising path to properly apprehend such complex unsteady couplings. Based on these observations, mesh effects on LES in a full annular gas-turbine combustion chamber (including its casing) is studied here in the context of its azimuthal thermo-acoustic response. To do so, a fully compressible, multi-species reacting LES is used on two meshes yielding two fully unsteady turbulent reacting predictions of the same configuration. The two tetrahedra meshes contain respectively 38 and 93 millions cells. Limit-cycles as obtained by the two LES are gauged against each other for various flow quantities such as mean velocity profiles, flame position and temperature fields. The thermo-acoustic limit-cycles are observed to be relatively indepedent of the grid resolution which comforts the use of LES tools to provide insights and understanding of the mechanisms triggering the coupling between the system acoustic eigenmodes and combustion.

  6. Sources and Distribution of Polychlorinated Terphenyls at a Major US Aeronautics Research Facility.

    Science.gov (United States)

    HALE; ENOS; GALLAGHER

    1998-11-01

    / High concentrations of an unusual, complex mixture of chlorinated compounds were discovered in sediments and oysters near a federal aeronautics facility during implementation of a pollutant screening protocol. The mixture was identified as Aroclor 5432, a polychlorinated terphenyl (PCT) formulation, produced in the US until 1972. PCTs, particularly low chlorinated mixtures, have rarely been reported in the environment, despite significant manufacture and usage. Releases were traced to two outfalls. Creek sediments downstream of one contained concentrations as high as 200,000 |gmg/kg (dry weight basis); those in indigenous oysters reached 35,000 |gmg/kg, indicating significant bioavailability and bioaccumulation potential. Subsequent work showed that PCTs were widely disseminated in marsh grass, crabs, and fish. PCTs, PCBs, and mercury were also detected in storm drain lines entering these outfalls. The lines received input from both storm water and research buildings. Historical hydraulic fluid leaks and in-service compressor fluids in some buildings contained PCTs and PCBs. Contaminated materials on-site were removed to minimize pollutant spread. Aroclor 5432 usage, most likely as compressor/hydraulic fluid additives, probably ended about ten years prior to its on-site detection. In terms of biological effects, intraperitoneal injection of fish with Aroclor 5432 induced cytochrome P-4501A (CYP1A) and ethoxyresorufin O-deethylase (EROD) activity to a similar degree as PCB Aroclor 1254 and to a greater extent than PCT Aroclor 5460. The presence of high concentrations of PCTs contributed to the facility being included on the National Priorities List. It subsequently became the first US federal facility to sign a Federal Facility Agreement, identifying cleanup responsibilities, prior to formal listing.KEY WORDS: Polychlorinated terphenyls; Aroclor; Contaminated sediments; Hydraulic fluid; Enzyme induction; Polychlorinated biphenyls

  7. Safety Risk Knowledge Elicitation in Support of Aeronautical R and D Portfolio Management: A Case Study

    Science.gov (United States)

    Shih, Ann T.; Ancel, Ersin; Jones, Sharon Monica; Reveley, Mary S.; Luxhoj, James T.

    2012-01-01

    Aviation is a problem domain characterized by a high level of system complexity and uncertainty. Safety risk analysis in such a domain is especially challenging given the multitude of operations and diverse stakeholders. The Federal Aviation Administration (FAA) projects that by 2025 air traffic will increase by more than 50 percent with 1.1 billion passengers a year and more than 85,000 flights every 24 hours contributing to further delays and congestion in the sky (Circelli, 2011). This increased system complexity necessitates the application of structured safety risk analysis methods to understand and eliminate where possible, reduce, and/or mitigate risk factors. The use of expert judgments for probabilistic safety analysis in such a complex domain is necessary especially when evaluating the projected impact of future technologies, capabilities, and procedures for which current operational data may be scarce. Management of an R&D product portfolio in such a dynamic domain needs a systematic process to elicit these expert judgments, process modeling results, perform sensitivity analyses, and efficiently communicate the modeling results to decision makers. In this paper a case study focusing on the application of an R&D portfolio of aeronautical products intended to mitigate aircraft Loss of Control (LOC) accidents is presented. In particular, the knowledge elicitation process with three subject matter experts who contributed to the safety risk model is emphasized. The application and refinement of a verbal-numerical scale for conditional probability elicitation in a Bayesian Belief Network (BBN) is discussed. The preliminary findings from this initial step of a three-part elicitation are important to project management practitioners as they illustrate the vital contribution of systematic knowledge elicitation in complex domains.

  8. Prediction of Foreign Object Debris/Damage (FOD) type for elimination in the aeronautics manufacturing environment through logistic regression model

    Science.gov (United States)

    Espino, Natalia V.

    Foreign Object Debris/Damage (FOD) is a costly and high-risk problem that aeronautics industries such as Boeing, Lockheed Martin, among others are facing at their production lines every day. They spend an average of $350 thousand dollars per year fixing FOD problems. FOD can put pilots, passengers and other crews' lives into high-risk. FOD refers to any type of foreign object, particle, debris or agent in the manufacturing environment, which could contaminate/damage the product or otherwise undermine quality control standards. FOD can be in the form of any of the following categories: panstock, manufacturing debris, tools/shop aids, consumables and trash. Although aeronautics industries have put many prevention plans in place such as housekeeping and "clean as you go" philosophies, trainings, use of RFID for tooling control, etc. none of them has been able to completely eradicate the problem. This research presents a logistic regression statistical model approach to predict probability of FOD type under given specific circumstances such as workstation, month and aircraft/jet being built. FOD Quality Assurance Reports of the last three years were provided by an aeronautical industry for this study. By predicting type of FOD, custom reduction/elimination plans can be put in place and by such means being able to diminish the problem. Different aircrafts were analyzed and so different models developed through same methodology. Results of the study presented are predictions of FOD type for each aircraft and workstation throughout the year, which were obtained by applying proposed logistic regression models. This research would help aeronautic industries to address the FOD problem correctly, to be able to identify root causes and establish actual reduction/elimination plans.

  9. Lean Purchasing Management of Aeronautical Manufacture Enterprise%航空制造企业精益采购管理

    Institute of Scientific and Technical Information of China (English)

    李云鹤

    2011-01-01

    This paper analyzed the purchasing management aeronautical manufactures enterprise, and studied the new status and challenges in the theory of lean supply and Lean production. A novel purchasing management mode of aeronautical manufactures enterprise is proposed, adopts the purchasing planning, contract management, and achieve the lean management of purchasing process. This paper designs the lean purchasing management system, which include purchasing planning, contract management, order tracing, vendor evaluation platform and so on. Finally, the proposed system is applied in an aeronautical manufactures enterprise.%分析了航空制造企业供应采购管理现状,研究了精益生产、精益供应理论下数字化采购管理面临的问题和挑战,提出了符合现代航空制造特点的数字化采购管理模式,以采购计划、采购合同为核心,实现了采购全过程精益管理;设计了数字化采购管理系统系统,涵盖了计划采购、合同管理、订单跟踪以及供应商评价等主要功能,系统在某大型航空制造企业得到应用,实现了预期应用目标.

  10. Contributions to understanding the high speed machining effects on aeronautic part surface integrity

    Science.gov (United States)

    Jomaa, Walid

    To remain competitive, the aeronautic industry has increasing requirements for mechanical components and parts with high functional performance and longer in-service life. The improvement of the in-service life of components can be achieved by mastering and optimizing the surface integrity of the manufactured parts. Thus, the present study attempted to investigate, experimentally and theoretically, the tool/work material interactions on part surface integrity during the machining of aluminium alloys and hardened materials (low alloy steels) using orthogonal machining tests data. The studied materials are two aluminum alloys (6061-T6 and 7075-T651) and AISI 4340 steel. The AISI 4340 steel was machined after been induction heat treated to 58-60 HRC. These materials were selected in an attempt to provide a comprehensive study for the machining of metals with different behaviours (ductile and hard material). The proposed approach is built on three steps. First, we proposed a design of experiment (DOE) to analyse, experimentally, the chip formation and the resulting surface integrity during the high speed machining under dry condition. The orthogonal cutting mode, adopted in these experiments, allowed to explore, theoretically, the effects of technological (cutting speed and feed) and physical (cutting forces, temperature, shear angle, friction angle, and length Contact tool/chip) parameters on the chip formation mechanisms and the machined surface characteristics (residual stress, plastic deformation, phase transformation, etc.). The cutting conditions were chosen while maintaining a central composite design (CCD) with two factors (cutting speed and feed per revolution). For the aluminum 7075-T651, the results showed that the formation of BUE and the interaction between the tool edge and the iron-rich intermetallic particles are the main causes of the machined surface damage. The BUE formation increases with the cutting feed while the increase of the cutting speed

  11. Investigation of an expert health monitoring system for aeronautical structures based on pattern recognition and acousto-ultrasonics

    Science.gov (United States)

    Tibaduiza-Burgos, Diego Alexander; Torres-Arredondo, Miguel Angel

    2015-08-01

    Aeronautical structures are subjected to damage during their service raising the necessity for periodic inspection and maintenance of their components so that structural integrity and safe operation can be guaranteed. Cost reduction related to minimizing the out-of-service time of the aircraft, together with the advantages offered by real-time and safe-life service monitoring, have led to a boom in the design of inexpensive and structurally integrated transducer networks comprising actuators, sensors, signal processing units and controllers. These kinds of automated systems are normally referred to as smart structures and offer a multitude of new solutions to engineering problems and multi-functional capabilities. It is thus expected that structural health monitoring (SHM) systems will become one of the leading technologies for assessing and assuring the structural integrity of future aircraft. This study is devoted to the development and experimental investigation of an SHM methodology for the detection of damage in real scale complex aeronautical structures. The work focuses on each aspect of the SHM system and highlights the potentialities of the health monitoring technique based on acousto-ultrasonics and data-driven modelling within the concepts of sensor data fusion, feature extraction and pattern recognition. The methodology is experimentally demonstrated on an aircraft skin panel and fuselage panel for which several damage scenarios are analysed. The detection performance in both structures is quantified and presented.

  12. Annual view (1999) - aeronautic relation/space relation. Space relation - general; Nenkan tenbo (1999) koku kankei uchu kankei. Uchu kankei

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-05

    The biggest event in the space relation in 1999 was an unsuccessful blast-off of No. 8 H-II rocket. This failure was a great shock because this was a failure following that of No. 5 in February 1998 and the satellite loaded aboard had been expected to have a function of the aeronautical control in charge of aeronautical safety and a function as a satellite taking over the weather satellite 'Himawari.' Not only National Space Development Agency of Japan and the enterprises concerned but all the people concerned in space development in Japan are now thoroughly investigating the causes. In the world, a considerable number of unsuccessful blast-off occurred also in 1999 as seen in the failure in launching of Titan 4B rocket in April 1999 and Delta III rocket in May 1999. The total satellites having been launched so far are approximately 5000. However, the present successful launching rate may indicate that the rocket technology is still under development or how severe it is to go to space. (NEDO)

  13. Evolutionary optimization and game strategies for advanced multi-disciplinary design applications to aeronautics and UAV design

    CERN Document Server

    Periaux, Jacques; Lee, Dong Seop Chris

    2015-01-01

    Many complex aeronautical design problems can be formulated with efficient multi-objective evolutionary optimization methods and game strategies. This book describes the role of advanced innovative evolution tools in the solution, or the set of solutions of single or multi disciplinary optimization. These tools use the concept of multi-population, asynchronous parallelization and hierarchical topology which allows different models including precise, intermediate and approximate models with each node belonging to the different hierarchical layer handled by a different Evolutionary Algorithm. The efficiency of evolutionary algorithms for both single and multi-objective optimization problems are significantly improved by the coupling of EAs with games and in particular by a new dynamic methodology named “Hybridized Nash-Pareto games”. Multi objective Optimization techniques and robust design problems taking into account uncertainties are introduced and explained in detail. Several applications dealing with c...

  14. 19th Biannual Symposium of the German Aerospace Aerodynamics Association (STAB) and the German Society for Aeronautics and Astronautics (DGLR)

    CERN Document Server

    Heller, Gerd; Krämer, Ewald; Wagner, Claus; Breitsamter, Christian

    2016-01-01

    This book presents contributions to the 19th biannual symposium of the German Aerospace Aerodynamics Association (STAB) and the German Society for Aeronautics and Astronautics (DGLR). The individual chapters reflect ongoing research conducted by the STAB members in the field of numerical and experimental fluid mechanics and aerodynamics, mainly for (but not limited to) aerospace applications, and cover both nationally and EC-funded projects. Special emphasis is given to collaborative research projects conducted by German scientists and engineers from universities, research-establishments and industries. By addressing a number of cutting-edge applications, together with the relevant physical and mathematics fundamentals, the book provides readers with a comprehensive overview of the current research work in the field. Though the book’s primary emphasis is on the aerospace context, it also addresses further important applications, e.g. in ground transportation and energy. .

  15. An Overview of the NASA Fundamental Aeronautics Program Subsonic Fixed Wing Project and Ultra High Bypass Partnership Research Goals

    Science.gov (United States)

    Hughes, Christopher E.

    2009-01-01

    An overview of the NASA Fundamental Aeronautics Program (FAP) mission and goals is presented. One of the subprograms under the FAP, the Subsonic Fixed Wing Project (SFW), is the focus of the presentation. The SFW system environmental metrics are discussed, along with highlights of planned, systematic approach to research to reduce the environmental impact of commercial aircraft in the areas of acoustics, fuel burn and emissions. The presentation then focuses on collaborative research being conducted with U.S. Industry on the Ultra High Bypass (UHB) engine cycle, the propulsion cycle selected by the SFW to meet the system goals. The partnerships with General Electric Aviation to investigate Open Rotor propulsion concepts and with Pratt & Whitney to investigate the Geared Turbofan UHB engine are highlighted, including current and planned future collaborative research activities with NASA and each organization.

  16. The National Aeronautics and Space Administration's Earth Science Applications Program: Exploring Partnerships to Enhance Decision Making in Public Health Practice

    Science.gov (United States)

    Vann, Timi S.; Venezia, Robert A.

    2002-01-01

    The National Aeronautics and Space Administration (NASA), Earth Science Enterprise is engaged in applications of NASA Earth science and remote sensing technologies for public health. Efforts are focused on establishing partnerships with those agencies and organizations that have responsibility for protecting the Nation's Health. The program's goal is the integration of NASA's advanced data and technology for enhanced decision support in the areas of disease surveillance and environmental health. A focused applications program, based on understanding partner issues and requirements, has the potential to significantly contribute to more informed decision making in public health practice. This paper intends to provide background information on NASA's investment in public health and is a call for partnership with the larger practice community.

  17. Application of MAC protocol in aeronautical Ad Hoc networks%MAC协议在航空自组网中应用综述

    Institute of Scientific and Technical Information of China (English)

    曹振林; 孙荣平; 柏长帅

    2013-01-01

      MAC protocol of aeronautical Ad hoc network is a direct controller of grouping messages in the wireless channel sending and reception. Therefore,in aeronautical Ad Hoc network,it is crucial for the performance of aeronautical Ad Hoc net⁃work whether MAC protocol can efficiently and fairly use the limited wireless channel resources. The MAC functions and the in⁃fluence factors of aeronautical Ad Hoc networks on MAC protocols are summarized in in this paper. MAC protocol characteristics of the wireless Ad Hoc networks and the key technologys of aeronautical Ad Hoc networks are analyzed in combination with the application of MAC in MANET.%  航空自组网MAC协议是分组报文在无线信道上发送和接收的直接控制者,因此,在航空自组网中,MAC协议能否高效、公平地利用有限的无线信道资源对航空自组网的性能起至关重要的作用。概述了MAC的功能作用、航空自组网对MAC协议的影响因素,并结合MAC在MANET中的应用,分析了无线自组网MAC协议的特点和航空自组网MAC协议的关键技术。

  18. The Relationship of a Pilot's Educational Background, Aeronautical Experience and Recency of Experience to Performance In Initial Training at a Regional Airline

    Science.gov (United States)

    Shane, Nancy R.

    The purpose of this study was to determine how a pilot's educational background, aeronautical experience and recency of experience relate to their performance during initial training at a regional airline. Results show that variables in pilots' educational background, aeronautical experience and recency of experience do predict performance in training. The most significant predictors include years since graduation from college, multi-engine time, total time and whether or not a pilot had military flying experience. Due to the pilot shortage, the pilots entering regional airline training classes since August 2013 have varied backgrounds, aeronautical experience and recency of experience. As explained by Edward Thorndike's law of exercise and the law of recency, pilots who are actively using their aeronautical knowledge and exercising their flying skills should exhibit strong performance in those areas and pilots who have not been actively using their aeronautical knowledge and exercising their flying skills should exhibit degraded performance in those areas. Through correlation, chi-square and multiple regression analysis, this study tests this theory as it relates to performance in initial training at a regional airline.

  19. A network design of military aeronautical communication based on MANET%一种基于MANET的军事航空通信网络设计

    Institute of Scientific and Technical Information of China (English)

    管伟; 任清华; 熊金石; 郑博

    2011-01-01

    在MANET研究中,网络拓扑结构对网络性能有直接影响.军事航空通信的特殊性决定了航空网络结构的特殊性.提出了一种航空自组网拓扑结构模型,并给出了基于OFDM的MAC协议思想,同时提出了一种分区层次路由协议.%In the research of MANET, the topology of the network directly detennines the performance of network. The particularity of military aeronautical communication detennines the particularity of aeronautical network structure. The article presents a topology structure model of the aeronautical Ad Hoc network and shows an idea of MAC protocol based on OFDM. At the same time, it suggests a divisional hierarchy routing protocol.

  20. [NASA/DOD Aerospace Knowledge Diffusion Research Project. Report 1, part 2:] Technical communications in aeronautics: Results of an exploratory study

    Science.gov (United States)

    Pinelli, Thomas E.; Glassman, Myron; Oliu, Walter E.; Barclay, Rebecca O.

    1989-01-01

    A study was undertaken that explored several aspects of technical communications in aeronautics. The study, which utilized survey research in the form of a self-administered questionnaire, was sent to 2,000 randomly selected members of the American Institute of Aeronautics and Astronautics. Six hundred and six usable questionnaires (30.3 percent) were received by the established cut off date. Part 2 of this study lists appendices to part 1, including survey instrument, aggregate totals, cross tabulations, and open-ended comments.

  1. Role of computation fluid dynamics in aeronautical engineering (4). Development and applications of implicit TVD finete volume code

    Energy Technology Data Exchange (ETDEWEB)

    Shima, Eiji; Jounouchi, Tadamasa

    1986-12-01

    Potential analysis in aeronautic design has reached the stage of practical use although it involves problems concerning accuracy and restrictions on its application. On the other hand, numerical analysis using Euler and Navier-Stokes (N-S) equations is based on a highly accurate theory, so is preferable, but has not reached the stage of practical use because it involves problems that shapes that can be analyzed are restricted on account of factors relating to computation lattice generation and because it involves difficulty relating to computation time. The essential factor in numerical analysis is stoutness (numeric stability). From this viewpoint, an Euler/N-S method was developed; the theory begins with TVD finite volume code, and incorporates various types of improvement to raise accuracy and shorten computation time; hence, it satisfies design requirements. The use of this method helps get solution under a wide range of flow condition without any fine adjustments, such as artificial viscosity. (6 figs, 1 tab, 10 refs)

  2. Hazard-evaluation and technical-assistance report HETA 89-276-l2093, Lockheed Aeronautical Systems Company, Marietta, Georgia

    Energy Technology Data Exchange (ETDEWEB)

    Salisbury, S.; Bernard, B.P.; Wilcox, T.; Gunter, B.

    1991-01-01

    In response to a request from the International Association of Machinists and Aerospace Workers, NIOSH conducted an evaluation at the Lockheed Aeronautical Systems Company, Marietta, Georgia due to concerns about health hazards from exposure to epoxy and polyurethane paints being sprayed in open areas on the C-130 aircraft assembly line. About 350 employees worked on the final assembly line. Air samples were collected to evaluate potential exposures to diisocyanates, organic vapors, and trace metals released during painting operations. Environmental sampling demonstrated minimal risk of exposure for nonpainters to organic vapors, isocyanate prepolymers, and toxic metals released into the open atmosphere during first shift painting of wing panels. Area monitors showed airborne concentrations of organic vapors and hazardous particulates which were below current occupational limits. Exposure risks to hexavalent chromium (7440473) compounds were shown for one of the painters spraying primer containing strontium-chromate (7789062). The large interior volume of the building and the rapid dispersion and upward drift of paint overspray may tend to reduce the chance of floor level exposures. The practice of spraying polyurethane when the building was mostly unoccupied should prevent new cases of respiratory sensitization to diisocyanates among the C-130 production workers. The authors recommend specific measures to reduce exposures to diisocyanates and hexavalent chromium compounds.

  3. The past, present, and future of National Aeronautics and Space Administration spaceflight diet in support of microgravity rodent experiments.

    Science.gov (United States)

    Sun, Gwo-Shing; Tou, Janet C; Yu, Diane; Girten, Beverly E; Cohen, Jacob

    2014-02-01

    Rodents have been the most frequently flown animal model used to study physiological responses to the space environment. In support of future of space exploration, the National Aeronautics and Space Administration (NASA) envisions an animal research program focused on rodents. Therefore, the development of a rodent diet that is suitable for the spaceflight environment including long duration spaceflight is a high priority. Recognizing the importance of nutrition in affecting spaceflight physiological responses and ensuring reliable biomedical and biological science return, NASA developed the nutrient-upgraded rodent food bar (NuRFB) as a standard diet for rodent spaceflight. Depending on future animal habitat hardware and planned spaceflight experiments, modification of the NuRFB or development of a new diet formulation may be needed, particularly for long term spaceflights. Research in this area consists primarily of internal technical reports that are not readily accessible. Therefore, the aims of this contribution are to provide a brief history of the development of rodent spaceflight diets, to review the present diet used in rodent spaceflight studies, and to discuss some of the challenges and potential solutions for diets to be used in future long-term rodent spaceflight studies.

  4. The past, present, and future of National Aeronautics and Space Administration spaceflight diet in support of microgravity rodent experiments.

    Science.gov (United States)

    Sun, Gwo-Shing; Tou, Janet C; Yu, Diane; Girten, Beverly E; Cohen, Jacob

    2014-02-01

    Rodents have been the most frequently flown animal model used to study physiological responses to the space environment. In support of future of space exploration, the National Aeronautics and Space Administration (NASA) envisions an animal research program focused on rodents. Therefore, the development of a rodent diet that is suitable for the spaceflight environment including long duration spaceflight is a high priority. Recognizing the importance of nutrition in affecting spaceflight physiological responses and ensuring reliable biomedical and biological science return, NASA developed the nutrient-upgraded rodent food bar (NuRFB) as a standard diet for rodent spaceflight. Depending on future animal habitat hardware and planned spaceflight experiments, modification of the NuRFB or development of a new diet formulation may be needed, particularly for long term spaceflights. Research in this area consists primarily of internal technical reports that are not readily accessible. Therefore, the aims of this contribution are to provide a brief history of the development of rodent spaceflight diets, to review the present diet used in rodent spaceflight studies, and to discuss some of the challenges and potential solutions for diets to be used in future long-term rodent spaceflight studies. PMID:24012282

  5. 14 CFR 61.407 - What aeronautical knowledge must I have to apply for a flight instructor certificate with a sport...

    Science.gov (United States)

    2010-01-01

    ... apply for a flight instructor certificate with a sport pilot rating? 61.407 Section 61.407 Aeronautics... CERTIFICATION: PILOTS, FLIGHT INSTRUCTORS, AND GROUND INSTRUCTORS Flight Instructors With a Sport Pilot Rating... sport pilot rating? (a) Except as specified in paragraph (c) of this section you must receive and...

  6. Design-Build-Write: Increasing the Impact of English for Specific Purposes Learning and Teaching in Aeronautical Engineering Education through Multiple Intelligences Task Design

    Science.gov (United States)

    Tatzl, Dietmar

    2011-01-01

    This article presents an English for Specific Purposes (ESP) task developed for teaching aeronautical engineering students. The task Design-Build-Write rests on the assumption that engineering students are skilled at mathematical reasoning, problem solving, drawing and constructing. In Gardner's 1983 Multiple Intelligences (MI) theory, these…

  7. Funding and Strategic Alignment Guidance for Infusing Small Business Innovation Research Technology into NASA Programs Associated with the Aeronautics Research Mission Directorate

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.

    2015-01-01

    This report is intended to help NASA program and project managers incorporate Small Business Innovation Research/Small Business Technology Transfer (SBIR/STTR) technologies that have gone through Phase II of the SBIR program into NASA Aeronautics and Mission Directorate (ARMD) programs. Other Government and commercial program managers can also find this information useful.

  8. [NASA/DOD Aerospace Knowledge Diffusion Research Project. Report 1, part 1:] Technical communications in aeronautics: Results of an exploratory study

    Science.gov (United States)

    Pinelli, Thomas E.; Glassman, Myron; Oliu, Walter E.; Barclay, Rebecca O.

    1989-01-01

    A study was undertaken that explored several aspects of technical communications in aeronautics. The study, which utilized survey research in the form of a self-administered questionnaire, was sent to 2,000 randomly selected members of the American Institute of Aeronautics and Astronautics. Six hundred and six usable questionnaires (30.3 percent) were received by the established cut off date. The study had five objectives. The first was to solicit the opinions of aeronautical engineers and scientists regarding the importance of technical communications to their profession; second, to determine their use and production of technical communications; third, to seek their views on the content of an undergraduate course in technical communications; fourth, to determine their use of libraries/technical information centers; and finally, to determine the use and importance of computer and information technology to them. The findings add considerable information to the knowledge of technical communications practices among aeronautical engineers and scientists and reinforce some of the conventional wisdom about technical communications and question other widely-held notions.

  9. Dynamic Strain Measurements on Automotive and Aeronautic Composite Components by Means of Embedded Fiber Bragg Grating Sensors.

    Science.gov (United States)

    Lamberti, Alfredo; Chiesura, Gabriele; Luyckx, Geert; Degrieck, Joris; Kaufmann, Markus; Vanlanduit, Steve

    2015-01-01

    The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be embedded in the composite materials and serve as in situ sensors. In this article, embedded optical fiber Bragg grating (FBG) sensors are used to analyze the vibration characteristics of two real-life composite components. The first component is a carbon fiber-reinforced polymer automotive control arm; the second is a glass fiber-reinforced polymer aeronautic hinge arm. The modal parameters of both components were estimated by processing the FBG signals with two interrogation techniques: the maximum detection and fast phase correlation algorithms were employed for the demodulation of the FBG signals; the Peak-Picking and PolyMax techniques were instead used for the parameter estimation. To validate the FBG outcomes, reference measurements were performed by means of a laser Doppler vibrometer. Sensors 2015, 15 27175 The analysis of the results showed that the FBG sensing capabilities were enhanced when the recently-introduced fast phase correlation algorithm was combined with the state-of-the-art PolyMax estimator curve fitting method. In this case, the FBGs provided the most accurate results, i.e. it was possible to fully characterize the vibration behavior of both composite components. When using more traditional interrogation algorithms (maximum detection) and modal parameter estimation techniques (Peak-Picking), some of the modes were not successfully identified. PMID:26516854

  10. Dynamic Strain Measurements on Automotive and Aeronautic Composite Components by Means of Embedded Fiber Bragg Grating Sensors.

    Science.gov (United States)

    Lamberti, Alfredo; Chiesura, Gabriele; Luyckx, Geert; Degrieck, Joris; Kaufmann, Markus; Vanlanduit, Steve

    2015-01-01

    The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be embedded in the composite materials and serve as in situ sensors. In this article, embedded optical fiber Bragg grating (FBG) sensors are used to analyze the vibration characteristics of two real-life composite components. The first component is a carbon fiber-reinforced polymer automotive control arm; the second is a glass fiber-reinforced polymer aeronautic hinge arm. The modal parameters of both components were estimated by processing the FBG signals with two interrogation techniques: the maximum detection and fast phase correlation algorithms were employed for the demodulation of the FBG signals; the Peak-Picking and PolyMax techniques were instead used for the parameter estimation. To validate the FBG outcomes, reference measurements were performed by means of a laser Doppler vibrometer. Sensors 2015, 15 27175 The analysis of the results showed that the FBG sensing capabilities were enhanced when the recently-introduced fast phase correlation algorithm was combined with the state-of-the-art PolyMax estimator curve fitting method. In this case, the FBGs provided the most accurate results, i.e. it was possible to fully characterize the vibration behavior of both composite components. When using more traditional interrogation algorithms (maximum detection) and modal parameter estimation techniques (Peak-Picking), some of the modes were not successfully identified.

  11. Dynamic Strain Measurements on Automotive and Aeronautic Composite Components by Means of Embedded Fiber Bragg Grating Sensors

    Directory of Open Access Journals (Sweden)

    Alfredo Lamberti

    2015-10-01

    Full Text Available The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be embedded in the composite materials and serve as in situ sensors. In this article, embedded optical fiber Bragg grating (FBG sensors are used to analyze the vibration characteristics of two real-life composite components. The first component is a carbon fiber-reinforced polymer automotive control arm; the second is a glass fiber-reinforced polymer aeronautic hinge arm. The modal parameters of both components were estimated by processing the FBG signals with two interrogation techniques: the maximum detection and fast phase correlation algorithms were employed for the demodulation of the FBG signals; the Peak-Picking and PolyMax techniques were instead used for the parameter estimation. To validate the FBG outcomes, reference measurements were performed by means of a laser Doppler vibrometer. Sensors 2015, 15 27175 The analysis of the results showed that the FBG sensing capabilities were enhanced when the recently-introduced fast phase correlation algorithm was combined with the state-of-the-art PolyMax estimator curve fitting method. In this case, the FBGs provided the most accurate results, i.e. it was possible to fully characterize the vibration behavior of both composite components. When using more traditional interrogation algorithms (maximum detection and modal parameter estimation techniques (Peak-Picking, some of the modes were not successfully identified.

  12. Student’s Motivation and level of Satisfaction : A case of Inholland University of Applied Sciences, (Aeronautical Engineering De-partment), Delft Holland

    OpenAIRE

    Obano, Hilda

    2012-01-01

    Authors: Hilda Obano Claire Group POBBA 08 The title Student Motivation and Level of Satisfaction Inholland University of Applied Sciences, Holland Number of pages & Appendices 46+5 Supervisors: Evariste Habiyakare and Johanna Heinonen The aims and objectives of this research were to find out the level of motivation amongst students of Inholland University of Applied Sciences Aeronautical Department. The Research problems were: -What factors affect students’ motiva...

  13. Description of an aeronautical geometry conversion package: Wave-drag to Langley Wireframe Geometry Standard (LaWGS) to Supersonic Implicit Marching Potential (SIMP)

    Science.gov (United States)

    Wiese, Michael R.

    1987-01-01

    Documented is an aeronautical geometry conversion package which translates wave-drag geometry into the Langley Wireframe Geometry Standard (LaWGS) format and then into a format which is used by the Supersonic Implicit Marching Potential (SIMP) program. The programs described were developed by Computer Sciences Corporation for the Advanced Vehicles Division/Advanced Concepts Branch at NASA Langley Research Center. Included also are the input and output from a benchmark test case.

  14. PREFACE: International Scientific and Research Conference on Topical Issues in Aeronautics and Astronautics (dedicated to the 55th anniversary from the foundation of SibSAU)

    Science.gov (United States)

    2015-10-01

    The International Scientific and Research Conference ''Topical Issues in Aeronautics and Astronautics'' is one of the most significant scientific conferences arranged by the Reshetnev Siberian State Aerospace University (SibSAU) which is located in the Krasnoyarsk Region of Russian Federation. In April 2015 this Conference was dedicated to the 55th anniversary from the foundation of the University. Traditionally, the Conference is seen as emblematic of the University's specialty and is annually organized in April, when the first human travelled into space. This Conference is arranged for undergraduate, graduate and postgraduate students, scientists and lecturers, as well as developers, designers and constructors representing leading companies and enterprises of the aerospace sector to give opportunities to present their projects, research work and results. The Conference is a great chance to connect scientists and highly-qualified and skilled specialists with a new community of future scientists and practitioners in the aerospace sector. The Conference proceedings include papers presented by creative young specialists closely connected with aviation and space vehicles - design, production, problem-solving in space machine building and aerospace education, macro- and microeconomic development of the field, new approaches to solving philosophical and social problems, - experienced scientists and specialists, and all those who want to dedicate themselves to aeronautics and astronautics. The selected papers are presented in these proceedings to share University research results, innovations and cutting-edge technologies with the international community to develop aeronautics and astronautics on a global scale.

  15. Effects of Be, Sr, Fe and Mg interactions on the microstructure and mechanical properties of aluminum based aeronautical alloys

    Science.gov (United States)

    Ibrahim, Mohamed Fawzy

    The present work was carried out on a series of heat-treatable aluminum-based aeronautical alloys containing various amounts of magnesium (Mg), iron (Fe), strontium (Sr) and beryllium (Be). Tensile test bars (dendrite arm spacing ~ 24mum) were solutionized for either 5 or 12 hours at 540°C, followed by quenching in warm water (60°C). Subsequently, these quenched samples were aged at 160°C for times up to 12 hours. Microstructural assessment was performed. All heat-treated samples were pulled to fracture at room temperature using a servo-hydraulic tensile testing machine. The results show that Be causes partial modification of the eutectic silicon (Si) particles similar to that reported for Mg addition. Addition of 0.8 wt.% Mg reduced the eutectic temperature by ~10°C. During solidification of alloys containing high levels of Fe and Mg, without Sr, a peak corresponding to the formation of a Be-Fe phase (Al8Fe2BeSi) was detected at 611°C. The Be-Fe phase precipitates in a script-like morphology. A new quinary eutectic-like reaction was observed to take place near the end of solidification of high Mg, high Fe, Be-containing alloys. This new reaction is composed mainly of fine particles of Si, Mg2Si, pi-Al 8Mg3FeSi6 and (Be-Fe) phases. The volume fraction of this reaction decreased with the addition of Sr. The addition of Be has a noticeable effect on decreasing the beta-phase length, or volume fraction, this effect may be limited by adding Sr. Beryllium addition also results in the precipitation of the beta-phase in a nodular form, which reduces the harmful effects of these intermetallics on the alloy mechanical properties. Increasing both Mg and Fe levels led to an increase in the amount of the pi-phase; increasing the iron content led to an increase in the volume fraction of the partially soluble beta- and pi-phases, while Mg2Si particles were completely dissolved. The beta-phase platelets were observed to undergo changes in their morphology due to the

  16. Information Fusion in Supportability Assessment of Aeronautic Equipment%航空装备保障性评价中的信息融合技术

    Institute of Scientific and Technical Information of China (English)

    王强; 刘雪峰; 端木京顺

    2001-01-01

    Supportability assessment is an important job in the AeronauticEquipment's entire life cycle and it is a certification of the working effect of Integrated Logistics Support of aeronautic equipment. But in the supportability assessment of the aeronautic equipment, there are such problems as the redundancy of information, an unnecessarily wide range of time and space scope, and a lack of accuracy. With the first ever introduction of information fusion in supportability assessment and the analysis of the suitability of information fusion in supportability assessment, this paper researches into the rules and fusion models of information fusion in supportability assessment and puts forward a brand-new strategy model of supportability information fusion. So, this paper has practical value in improving the accuracy of aeronautic equipment supportability assessment results and in pushing on the development of supportability assessment.%航空装备保障性评价是航空装备寿命周期过程中的一项重要工作,是对航空装备开展综合保障工作效果的验证,但航空装备保障性评价中往往存在信息量大、时空覆盖范围广、准确性不高的问题。因此文中首次将信息融合技术引入保障性评价工作,分析了信息融合技术在保障性评价中的适用性,探索了信息融合技术在保障性评价中的准则及融合模型,提出了全新的保障性信息融合策略模型,对提高航空装备保障性评价结果的准确性和推动保障性评价技术的发展具有较大的实际应用价值。

  17. Funding and Strategic Alignment Guidance for Infusing Small Business Innovation Research Technology Into Aeronautics Research Mission Directorate Projects at NASA Glenn Research Center for 2015

    Science.gov (United States)

    Nguyen, Hung D.; Steele, Gynelle C.; Morris, Jessica R.

    2015-01-01

    This document is intended to enable the more effective transition of NASA Glenn Research Center (GRC) SBIR technologies funded by the Small Business Innovation Research (SBIR) program as well as its companion, the Small Business Technology Transfer (STTR) program into NASA Aeronautics Research Mission Directorate (ARMD) projects. Primarily, it is intended to help NASA program and project managers find useful technologies that have undergone extensive research and development (RRD), through Phase II of the SBIR program; however, it can also assist non-NASA agencies and commercial companies in this process. aviation safety, unmanned aircraft, ground and flight test technique, low emissions, quiet performance, rotorcraft

  18. The Honorable William Nelson, Senior Senator from Florida, Chairman, Senate Committee on Space, Aeronautics and Related Sciences visiting the AMS Hall of Prevessin with Prof. Samuel Ting from the MIT.

    CERN Multimedia

    Maximilien Brice

    2008-01-01

    The Honorable William Nelson, Senior Senator from Florida, Chairman, Senate Committee on Space, Aeronautics and Related Sciences visiting the AMS Hall of Prevessin with Prof. Samuel Ting from the MIT.

  19. The Honorable William Nelson, Senior Senator from Florida, Chairman, Senate Committee on Space, Aeronautics and Related Sciences signing the golden book. Greeting by Mr Robert Aymar, CERN Director General and Prof. Samuel Ting from the MIT.

    CERN Multimedia

    Maximilien Brice

    2008-01-01

    The Honorable William Nelson, Senior Senator from Florida, Chairman, Senate Committee on Space, Aeronautics and Related Sciences signing the golden book. Greeting by Mr Robert Aymar, CERN Director General and Prof. Samuel Ting from the MIT.

  20. Low Temperature Properties Of Fuel Mixtures Of Kerosene And Fame Type Used To Supply Turbine Engines In Marine And Other Non-Aeronautical Applications

    Directory of Open Access Journals (Sweden)

    Dzięgielewski Wojciech

    2015-04-01

    Full Text Available A worldwide trend to popularise gradually increasing use of biofuels in various applications was a motivation for gaining interest in FAME as a commonly available biocomponent to fuels combusted in turbine engines. These engines are mainly used in aeronautics, but many of them are also used in other, non-aeronautical areas, including marine navigation. Specific conditions in which fuels are combusted in turbine engines used in these applications are the reason why fuel mixtures of kerosene and FAME type should reveal relevant low temperature characteristics. The article presents results of tests of low temperature properties of mixtures of the jet fuel Jet A-1 and methyl esters of higher fatty acids (FAME. The prepared mixtures contained different contents of FAME. The obtained results present changes of: viscosity, cloud point, pour point, crystallising point, and cold filter plugging point, depending on the percentage by volume of FAME. They also prove that the course of changes of low temperature properties of these mixtures is affected by chemical structure of the biocomponent.

  1. 基于规则库的目视航图自动化制图%Automatic cartography for VFR aeronautical charts based on rule database

    Institute of Scientific and Technical Information of China (English)

    张文元; 许妙忠

    2011-01-01

    本文提出了一种基于规则库的目视航图自动化制图技术,详细阐述了基于规则的要素自动综合取舍、自动符号化、注记自动配置的实现方法.基于GIS COM组件开发了一个目视航图制图原型系统,通过对规则库中各种规则的配置、管理和调用,可方便快捷地制作出目视航图产品.%An automatic cartography method for VFR aeronautical charts based on rule database was introduced in this paper, and three key technologies based on rules were illustrated, including the automatization of cartographic generalization, feature symbolization and annotation placement Based on GIS Components, a prototype system of making VFR charts was developed, which could be used to make VFR aeronautical charts conveniently and quickly with the help of various pre-configured rules in rule database.

  2. Kerosene detection using laser induced fluorescence imaging for aeronautical engines application; Detection du kerozene par imagerie de fluorescence induite par laser, pour application sur foyer aeronautique

    Energy Technology Data Exchange (ETDEWEB)

    Baranger, Ph.

    2004-10-15

    The new concepts of aeronautical engines, developed to follow the evolution of the European standards of pollution, are generally based on an improvement of the processes of liquid fuel injection and mixture in the combustion chamber. There is currently no model mature enough to work without experimental validation. The purpose of this thesis is to assess the possibility of measuring the kerosene (Jet A1) vapour distribution by PLIF (Planar Laser Induced Fluorescence). That measurement technique must quantitatively image the instantaneous concentrations fields of the vaporized fuel in a spray. The implementation of such a technique needs an experimental spectroscopic study, which was realized on the vapour of fuel. First of all, this study allowed us to determine the properties of the kerosene fluorescence spectrum versus physical parameters such as temperature, pressure or gas mixture composition, especially in presence of oxygen molecules. Then, it was shown that the fluorescence spectrum of the fuel could be reproduce in all physical conditions by a single mixture of four aromatics. Their photophysical properties were also analyzed. Following this spectroscopic study, a phenomenological model for the fluorescence of the gaseous fuel was set up. This model led us to a protocol for an optical diagnostic on this fuel vapour. An experiment was set up to test the implementation and the limits of this technique in simple laboratory conditions. This experiment confirmed that this is indeed a promising technique for the diagnostic of the fuel vapour in aeronautical engine. (author)

  3. The Guggenheim Aeronautics Laboratory at Caltech and the creation of the modern rocket motor (1936-1946): How the dynamics of rocket theory became reality

    Science.gov (United States)

    Zibit, Benjamin Seth

    This thesis explores and unfolds the story of discovery in rocketry at The California Institute of Technology---specifically at Caltech's Guggenheim Aeronautics Laboratory---in the 1930s and 1940s. Caltech was home to a small group of engineering students and experimenters who, beginning in the winter of 1935--1936, formed a study and research team destined to change the face of rocket science in the United States. The group, known as the Guggenheim Aeronautics Laboratory (GALCIT, for short) Rocket Research Group, invented a new type of solid-rocket propellant, made distinct and influential discoveries in the theory of rocket combustion and design, founded the Jet Propulsion Laboratory, and incorporated the first American industrial concern devoted entirely to rocket motor production: The Aerojet Corporation. The theoretical work of team members, Frank Malina, Hsueh-shen Tsien, Homer J. Stewart, and Mark Mills, is examined in this thesis in detail. The author scrutinizes Frank Malina's doctoral thesis (both its assumptions and its mathematics), and finds that, although Malina's key assertions, his formulae, hold, his work is shown to make key assumptions about rocket dynamics which only stand the test of validity if certain approximations, rather than exact measurements, are accepted. Malina studied the important connection between motor-nozzle design and thrust; in his Ph.D. thesis, he developed mathematical statements which more precisely defined the design/thrust relation. One of Malina's colleagues on the Rocket Research Team, John Whiteside Parsons, created a new type of solid propellant in the winter of 1941--1942. This propellant, known as a composite propellant (because it simply was a relatively inert amalgam of propellant and oxidizer in non-powder form), became the forerunner of all modern solid propellants, and has become one of the seminal discoveries in the field of Twentieth Century rocketry. The latter chapters of this dissertation discuss the

  4. NASA Historical Data Book. Volume 6; NASA Space Applications, Aeronautics and Space Research and Technology, Tracking and Data Acquisition/Support Operations, Commercial Programs and

    Science.gov (United States)

    Rumerman, Judy A.

    2000-01-01

    This sixth volume of the NASA Historical Data Book is a continuation of those earlier efforts. This fundamental reference tool presents information, much of it statistical, documenting the development of several critical areas of NASA responsibility for the period between 1979 and 1988. This volume includes detailed information on the space applications effort, the development and operation of aeronautics and space research and technology programs, tracking and data acquisition/space operations, commercial programs, facilities and installations, personnel, and finances and procurement during this era. Special thanks are owed to the student research assistants who gathered and input much of the tabular material-a particularly tedious undertaking. There are numerous people at NASA associated with historical study, technical information, and the mechanics of publishing who helped in myriad ways in the preparation of this historical data book.

  5. Scheme of TCP network coding in aeronautical mobile communication%一种航空移动通信中TCP网络编码方法

    Institute of Scientific and Technical Information of China (English)

    宋扬; 徐桢

    2012-01-01

    针对航空移动通信中飞机内移动终端与地面基站端到端通信的高随机误码和突发误码的特点,在TCP网络编码TCP/NC (Network Coding)的基础上提出了一种具有丢失感知机制的网络编码方法TCP/NCLA (Loss Aware).该方法使接收端可以感知到编码包的丢失,并在返回ACK时通知发送端发送冗余编码包,从而确保冗余编码包的有效性.新方法能够适应航空移动通信高误码和突发误码的特点,大大提高端到端的吞吐量,提高约21.24%,并且较TCP/NC协议降低了端到端的投递时延,降低约25.48%.并在NS2仿真环境下对改进算法进行了仿真,仿真结果表明了新编码算法的有效性.%in order to realize reliable end-to-end communication in aeronautical mobile communication between mobile terminal in aircraft and ground base station, this paper propose a loss aware protocol TCP/NCLA (TCP/Network coding loss aware) based on TCP/NC (TCP Network Coding) to solve the problem of high random error and burst error. It enable the receiver to aware the loss of coding packets in the transmission, and to use ACKs to inform the source side to send redundancy. The new protocol could ensure the validity of redundancy, and could adapt the feature of high random error and burst error in aeronautical mobile communication, sequentially, increasing the throughput about 21.4% and achieving lower delivery delay end-to-end about 25,48% than TCP/NC. We simulate the new protocol in NS2 and the results show a significant improvement of the revised scheme.

  6. Virtual acoustics, aeronautics, and communications.

    Science.gov (United States)

    Begault, D R

    1998-06-01

    An optimal approach to auditory display design for commercial aircraft would utilize both spatialized (3-D) audio techniques and active noise cancellation for safer operations. Results from several aircraft simulator studies conducted at NASA Ames Research Center are reviewed, including Traffic alert and Collision Avoidance System (TCAS) warnings, spoken orientation "beacons" for gate identification and collision avoidance on the ground, and hardware for improved speech intelligibility. The implications of hearing loss among pilots is also considered.

  7. [Air transport, aeronautic medicine, health].

    Science.gov (United States)

    Cupa, Michel

    2009-10-01

    There were 3.2 billion airline passengers in 2006, compared to only 30 million in 1950. Intercontinental health disparities create a risk of pandemics such as SARS and so-called bird flu. Precautions are now being implemented both in airports and in aircraft, in addition to measures intended to prevent the spread of malaria and arboviral diseases, such as vector eradication, elimination of stagnant water, malaria prophylaxis, vaccination, and use of repellents. These measures are dealt with in international health regulations, which have existed since 1851 and were last updated on 15 June 2007. Flying on an airliner also carries a risk of hypobaria (cabin pressure at 2000 m), which can aggravate respiratory problems. Other problems include relative hypoxia, gas expansion, air dryness, ozone, cosmic rays, airsickness, jet lag, the effects of alcohol and tobacco, and, more recently, deep vein thrombosis (DVT) and pulmonary embolism (PE), collectively known as "coach class syndrome". A new type of medicine has appeared, in the form of on-board medical assistance. The European Civil Aviation Committee has recommended first-aid training for cabin crews and onboard medical equipment such as first-aid kits and defibrillators. Airline statistics show that one in-flight medical incident occurs per 20 000 passengers, as well as one death per 5 million passengers and one medical reroute per 20 000 flights (40% of reroutes turn out to be unjustified). More than 80% of long-haul flights have a physician travelling on board. However, depending on his or her specialty, problems of competence and legal responsibility may arise. Ground-based medical centers can provide help via satellite telephone, but this implies the need for airline staff training. International cooperation is the only way to minimize the health risks associated with the growth in global air travel. PMID:20669640

  8. Automotive and aeronautical clusters in the São Paulo state’s Vale do Paraíba: a comparison of formation trajectories

    Directory of Open Access Journals (Sweden)

    Márcio da Silveira Luz

    2010-04-01

    Full Text Available This paper presents a comparison of the relevant characteristics of São Paulo State’s Vale do Paraíba automotive and aerospace clusters observed and analyzes the technological and productive chains strengthening. In order to accomplish it, the adopted methodological procedures are of qualitative nature, by means of documentary research. The results pointed out that the government established, in the mid-1945, the currently named Departamento de Ciência e Tecnologia Aeroespacial (DCTA, as a research and development (R&D center and, by 1979, Embraer, a state-owned aeronautical construction industry. It was also sought to generate conditions so that domestic companies could emerge around and replace the dependency on aerospace systems and subsystems international suppliers by developing indigenous technological capacities. The automotive cluster under study started in the São Paulo State’s Vale do Paraíba (PPV by means of the regionalization of multinational automotive construction firms migrated from ABC Paulista region looking for physical space for their growth, also relying on tax benefits. The survey results indicate that, in spite of fundamental differences with regard to their productive chains strenghtening processes, they showed similar adverse results.

  9. Child health promotion program in South Korea in collaboration with US National Aeronautics and Space Administration: Improvement in dietary and nutrition knowledge of young children

    Science.gov (United States)

    Lim, Hyunjung; Kim, JiEun; Min, Jungwon; Carvajal, Nubia A.; Lloyd, Charles W.

    2016-01-01

    BACKGROUND/OBJECTIVES Childhood obesity has become a global epidemic. Development of effective and sustainable programs to promote healthy behaviors from a young age is important. This study developed and tested an intervention program designed to promote healthy eating and physical activity among young children in South Korea by adaptation of the US National Aeronautics and Space Administration (NASA) Mission X (MX) Program. SUBJECTS/METHODS The intervention program consisted of 4 weeks of fitness and 2 weeks of nutrition education. A sample of 104 subjects completed pre- and post-surveys on the Children's Nutrition Acknowledgement Test (NAT). Parents were asked for their children's characteristics and two 24-hour dietary records, the Nutrition Quotient (NQ) at baseline and a 6-week follow-up. Child weight status was assessed using Korean body mass index (BMI) percentiles. RESULTS At baseline, 16.4% (boy: 15.4%; girl: 19.2%) of subjects were overweight or obese (based on BMI≥85%tile). Fat consumption significantly decreased in normal BMI children (48.6 ± 16.8 g at baseline to 41.9 ± 18.1 g after intervention, P NASA MX project is feasible and shows favorable changes in eating behaviors and nutritional knowledge among young children. PMID:27698964

  10. Dry Machining Aeronautical Aluminum Alloy AA2024-T351: Analysis of Cutting Forces, Chip Segmentation and Built-Up Edge Formation

    Directory of Open Access Journals (Sweden)

    Badis Haddag

    2016-08-01

    Full Text Available In this paper, machining aeronautical aluminum alloy AA2024-T351 in dry conditions was investigated. Cutting forces, chip segmentation, and built-up edge formation were analyzed. Machining tests revealed that the chip formation process depends on cutting conditions and tool geometry. So continuous and segmented chips are generated. Under some cutting conditions, built-up edge formation occurs. A predictive machining theory, based on a finite elements method (FEM, was applied to reproduce and explain these phenomena. Thermomechanical behaviors of the work material and the tool-work material interface were considered. Results of the proposed modelling were compared to experimental data for a wide range of cutting speed. It was shown that the feed force is well reproduced by the ALE-FE (arbitrary lagrangian-eulerian finite element formulation and highly underestimated by the lagrangian finite element (LAG-FE one. While, the periodic localized shear band, leading to a chip segmentation, is well reproduced with the Lagrangian FE formulation. It was found that the chip segmentation can be correlated to the cutting force evolution using the defined chip segmentation intensity parameter. For the built-up edge (BUE phenomenon, it was shown that it depends on the contact/friction at the tool-chip interface, and this is possible to simulate by making the friction coefficient time-dependent.

  11. Parameter Studies on High-Velocity Oxy-Fuel Spraying of CoNiCrAlY Coatings Used in the Aeronautical Industry

    Directory of Open Access Journals (Sweden)

    J. A. Cabral-Miramontes

    2014-01-01

    Full Text Available The thermal spraying process is a surface treatment which does not adversely affect the base metal on which it is performed. The coatings obtained by HVOF thermal spray are employed in aeronautics, aerospace, and power generation industries. Alloys and coatings designed to resist oxidizing environments at high temperatures should be able to develop a surface oxide layer, which is thermodynamically stable, slowly growing, and adherent. MCrAlY type (M = Co, Ni or combination of both coatings are used in wear and corrosion applications but also provide protection against high temperature oxidation and corrosion attack in molten salts. In this investigation, CoNiCrAlY coatings were produced employing a HVOF DJH 2700 gun. The work presented here focuses on the influences of process parameters of a gas-drive HVOF system on the microstructure, adherence, wear, and oxygen content of CoNiCrAlY. The results showed that spray distance significantly affects the properties of CoNiCrAlY coatings.

  12. Systemic culture in global manufacturing virtual networks within the aeronautical industry; Cultura sistemaca en las redes virtuales de fabricacion global de la industria aeronautica

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez-Monroy, C.

    2010-07-01

    This paper analyzes the existence of a systemic culture in global manufacturing virtual networks (GMVN). In order to validate the proposed model, based on a conceptual model of systemic culture, the case methodology have been applied to an example within the aeronautical industry that has been one of the most successful relationships within GMVNs, the collaboration between GE and SNECMA for the CFM 56 engine manufacturing. These organizations are formed by very dynamic companies that manufacture all types of products or services, and vertical relations between themselves, ( in some cases even direct competitors), where it is not necessary maintaining large internal manufacturing resources, just managing and sharing these resources efficiently in the network. This study about organizational culture at the network level includes aspects such as cultural similarity among its actors, social embeddedness, tacit knowledge transfer or the importance of trust at inter-firm collaborations. The presence under a systemic perspective, of homogeneous cultural values and practices in which network actors can be identified may strengthen the group membership or establish a social network that underlies the own GMVN and facilitates interactions among its members. The feasibility of this approach would facilitate the formation of new GMVNs, by establishing, ex ante, a cultural prescriptive model at the network level. (Author) 14 refs.

  13. 航空产品混装PCB回流焊工艺优化%Optimizing of Mixed PCB Technology of Reflow Soldering for Aeronautical Product

    Institute of Scientific and Technical Information of China (English)

    凌月红

    2013-01-01

    SMT welding method is used more and more frequently in aeronautical electronics PCB. Many defects in spot weld such as BGA empty holes and weak jointing come from reflow soldering temperature adjustment. In this paper, the author derives the best reflow soldering temperature with oven temperature testing instruments and thrust experiments , satisfying PCB soldering quality requirements and is highly adaptable.%  目前航空电子产品印制电路板(PCB)焊接方式越来越多采用表面贴装技术(SMT),而最能体现SMT回流焊工艺能力的参数指标是回流焊曲线。很多焊点的缺陷,特别是目前较难控制与解决的球栅阵列封装器件(BGA:Ball Grid Array)空洞以及虚焊等隐性缺陷都来源于回流焊温度参数的设定。本文运用炉温测试仪和推力试验,结合实验设计获得最优化的参数设定,最终找到混装 PCB 的最佳回流炉温度曲线,满足了混装PCB焊接质量要求,且具有较强的适应能力。

  14. Maintenance Support Ability Evaluation Model of Aeronautical Equipment Based on Weighted LS-SVM%加权LS-SVM的航空装备维修保障能力评估模型

    Institute of Scientific and Technical Information of China (English)

    胡新江; 徐浩军; 王文栋; 揭军魂

    2012-01-01

    Maintenance support ability evaluation work is an important content of aeronautical equipment whole-system and whole-life management. The scientific and precise evaluation method of maintenance support ability is the base to achieve the precise support of aeronautical equipment. Firstly, the evaluation guideline system of aeronautical equipment maintenance support ability is established. Then the key factor guidelines are made sure. Finally, the evaluation model of aeronautical equipment maintenance support ability based on Weighted LS-SVM is established. The simulation results show that the method is valid.%维修保障能力评估工作是航空装备全系统全寿命管理的一项重要内容,科学精确的维修保障能力评估方法是实现航空装备精确化保障的基础.首先建立了航空装备维修保障能力评估指标体系,确定了关键要素指标,然后建立了基于加权LS-SVM的航空装备维修保障能力评估模型,仿真结果验证了该方法的有效性.

  15. Hot rolling textures of Al-Cu-Li and Al-Zn-Mg-Cu aeronautical alloys: Experiments and simulations to high strains

    Energy Technology Data Exchange (ETDEWEB)

    Contrepois, Q.; Maurice, C. [Ecole des Mines de Saint-Etienne, Centre SMS, CNRS UMR 5146, 158 Cours Fauriel, 42023 Saint-Etienne, CEDEX 2 (France); Driver, J.H., E-mail: driver@emse.fr [Ecole des Mines de Saint-Etienne, Centre SMS, CNRS UMR 5146, 158 Cours Fauriel, 42023 Saint-Etienne, CEDEX 2 (France)

    2010-10-25

    Research highlights: {yields} Systematic hot plane strain compression tests have been made under controlled conditions of temperature and strain to compare texture evolution in Al-Zn-Mg and Al-Li-Cu. {yields} The hot rolling textures in Al-Cu-Li are the same as those of standard Al-Zn-Mg alloys, when deformed under the same conditions. {yields} The stronger textures, particularly the Brass {l_brace}110{r_brace}<112> component, of industrially rolled Al-Cu-Li are due to the higher rolling temperatures. {yields} The experimental results are consistent with the model of non-octahedral slip at high temperaturesz. - Abstract: The development of hot rolling textures, and particularly the Brass {l_brace}1 1 0{r_brace} <1 1 2> component, of two typical aeronautical alloys: Al-Cu-Li AA2050 and Al-Zn-Mg-Cu AA7050, has been investigated by EBSD and X-ray diffraction measurements after plane strain compression tests and industrial hot rolling. Systematic hot channel-die compression tests were performed to strains of 2.7 at 420-450 deg. C, on both as-homogenized alloys. Under the same processing conditions, the two alloys develop the same rolling textures showing that the presence of Li is not intrinsically responsible for the development of strong Brass components. However, it is shown, by further channel-die compression tests between 350 and 500 deg. C and up to strains of 3.9, that the deformation temperature can have a major influence: with increasing temperature {l_brace}1 1 0{r_brace} <1 1 2> orientations are strongly favoured at the expense of the Copper {l_brace}1 1 2{r_brace} <1 1 1> component. Numerical simulations demonstrate that previous and current experimental observations of the influence of temperature on texture development can be explained by increasing slip on non-octahedral slip systems.

  16. 航空拖曳诱饵空气动力及动态特性%Aerodynamic and dynamic characteristics of aeronautic towed decoy

    Institute of Scientific and Technical Information of China (English)

    芦艳龙; 童中翔; 王超哲; 蒋赟

    2011-01-01

    The relative space position between aviation towed decoy and plane which is protected and release method of aviation towed decoy are the main factors that influence the result when missile is jammed by decoy. A new finite segment method was developed to make up the deficiencies of conventional finite segment method. Aerodynamic movement characteristics of aeronautic towed decoy were transformed to the question how to model and compute angles between tow and towing aircraft track coordinates. The geometry relationship between velocity vector of towing aircraft and tow was analyzed, so dynamic fallow models of tow and towing aircraft were established. The dynamic characteristics of towed decoy were calculated when towed aircraft does different flights. The result indicates that the arithmetic is simple, valid and better to simulate decoy's dynamic characteristics.%航空拖曳式诱饵与被保护载机的相对空间位置及投放使用方法是诱饵能否成功干扰导弹的关键因素.针对传统有限段法的不足,提出改进的拖缆有限段法,将拖曳式诱饵的动态运动特性问题转变为拖曳线与拖曳飞机航迹轴系的夹角动态计算问题.通过分析拖曳飞机的速度矢量与拖曳线的几何关系,建立了拖曳式诱饵对拖曳载机的动态跟随模型.仿真计算了拖曳飞机机动飞行时,拖曳式诱饵的动态运动特性,结果证明算法简单有效,较好地模拟了其动态跟随特性.

  17. The development of turbojet aircraft in Germany, Britain, and the United States: A multi-national comparison of aeronautical engineering, 1935--1946

    Science.gov (United States)

    Pavelec, Sterling Michael

    In the 1930s aeronautical engineering needed revision. A presumptive anomaly was envisaged as piston-engine aircraft flew higher and faster. Radical alternatives to piston engines were considered in the unending quest for speed. Concurrently, but unwittingly, two turbojet engine programs were undertaken in Europe. The air-breathing three-stage turbojet engine was based on previous turbine technology; the revolutionary idea was the gas turbine as a prime mover for aircraft. In Germany, Dr. Hans von Ohain was the first to complete a flight-worthy turbojet engine for aircraft. Installed in a Heinkel designed aircraft, the Germans began the jet age on 27 August 1939. The Germans led throughout the war and were the first to produce jet aircraft for combat operations. The principal limiting factor for the German jet program was a lack of reliable engines. The continuing myths that Hitler orders, too little fuel, or too few pilots hindered the program are false. In England, Frank Whittle, without substantial support, but with dogged determination, also developed a turbojet engine. The British came second in the jet race when the Whittle engine powered the Gloster Pioneer on 15 May 1941. The Whittle-Gloster relationship continued and produced the only Allied combat jet aircraft during the war, the Meteor, which was confined to Home Defense in Britain. The American turbojet program was built directly from the Whittle engine. General Electric copied the Whittle designs and Bell Aircraft was contracted to build the first American jet plane. The Americans began the jet age on 1 October 1942 with a lackluster performance from their first jet, the Airacomet. But the Americans forged ahead, and had numerous engine and airframe programs in development by the end of the war. But, the Germans did it right and did it first. Partly because of a predisposition towards excellent engineering and physics, partly out of necessity, the Germans were able to produce combat turbojet aircraft

  18. 新概念下航空产品科研生产流程探讨%Discussion on Scientific Research and Production Flow of Aeronautical Products Under New Concept

    Institute of Scientific and Technical Information of China (English)

    吴志恩

    2001-01-01

    Rapid development of scientific technology, especially information technology brings to scientific research and production of the aeronautical products a series of new changes. In this paper, a new thinking in establishing scientific research and production of aeronautical products flow are discussed based on the conditions in China. At the same time, the agile manufacture and lean production are described in detail.%随着现代科学技术尤其是信息技术的快速发展,航空产品的科研生产出现了一系列新的变化。本文结合我国国情,探讨了制定航空产品科研生产流程的新思路,并对敏捷制造和精益生产作了较详细的叙述

  19. Profile of body composition and cardiorrespiratory fitness in brazilian aeronauts. Perfil de la composición corporal y del condicionamiento cardiorrespiratorio en aeronautas militares brasileños.

    OpenAIRE

    Estélio Henrique Martin Dantas; Valéria Sales do Valle; Ana Cristina Lopes; Glória Barreto; Ângelo Marcelo Belas Coutinho

    2007-01-01

    AbstractThe objective of this study was to verify the profile of body composition and cardiorrespiratory fitness in brazilian military aeronauts, correlating them. The sample include 1550 aviators of the masculine sex (31,82 ± 9,70 years). The individuals were divided and classified in normal group (GN), overweight (GOW) and obesity (GOB) . It was realized an anthropometric and cardiorespiratory fitness evaluation. The Pearson correlation test was used to investigate the mean correlation, but...

  20. Research on Improving Teachers' Professional Quality of Higher Vocational Aeronautic Maintenance Major%提高高职航空维修类教师的职业素养的研究

    Institute of Scientific and Technical Information of China (English)

    谭卫娟

    2012-01-01

    The key to vigorously develop vocational education is to build a high-quality teacher team. Aeronautic maintenance major closely centers development of military aviation and civil aviation, setting up this major is to serve regional economic development, and it belongs to "industrial support". Whether can train high-end skilled personnel of aeronautic maintenance major who are able to work in less well conditions, be employed and remained and create performance lies in the way of improving professionalism of the teachers of aeronautic maintenance major.%大力发展职业教育,关键在于建设一支高质量的教师队伍.航空维修类专业,是紧紧围绕我国军用航空与民用航空发展,服务区域经济发展开办的专业,属于“产业支撑型”专业.是否能培养出“下得去、用得上、留得住、出业绩”的航空维修类高端技能型人才,前提在于如何提高航空维修类教师的职业素养.

  1. Estabelecimento de ciclo de cura de pré-impregnados aeronáuticos Establishment of cure cycle of aeronautic prepregs

    Directory of Open Access Journals (Sweden)

    Michelle L. Costa

    2005-07-01

    Full Text Available Os compósitos poliméricos podem ser produzidos via moldagem em autoclave, onde as condições de processamento podem ser otimizadas a partir do conhecimento físico-químico da matriz polimérica. A evolução da cinética da reação de cura ocorre simultaneamente com as modificações no comportamento reológico do sistema polimérico, sendo comum denominar o fenômeno de comportamento reo-cinético. O presente trabalho tem como objetivo conhecer os parâmetros de cura, cinéticos e reológicos, de três diferentes sistemas de pré-impregnados de resina epóxi (cura a 177 °C, conhecidos como F161, F584 e 8552, hoje usados na indústria aeronáutica brasileira. Este estudo foi realizado com o auxílio das técnicas de DSC e reologia, utilizando-se análises dinâmicas e isotérmicas. Com isso, foi possível estabelecer a ordem de reação e a cinética de cura dos sistemas estudados. Neste estudo, foram utilizados como modelos matemáticos o de ordem n e o autocatalítico com ordem total de aproximadamente 2. A temperatura de gel foi de ~100 °C, e o tempo de gel correspondente foi de 135 segundos. A partir do conhecimento da cinética de cura e dos parâmetros reológicos dos sistemas de pré-impregnados foi possível estabelecer um ciclo de cura destinado à consolidação das peças aeronáuticas via moldagem em autoclave.Autoclave molding produces polymer composites, where the processing conditions can be optimized with physicochemical knowledge of the polymeric matrix. The cure reaction evolves simultaneously with changes in rheology, which is normally refered to as rheo-kinetic behavior. With the knowledge of the appropriate cure cycle one can identify the steps in which pressure should be applied and when to raise the temperature. This paper is aimed at investigating the cure, kinetics and rheological parameters of three prepreg epoxy systems, namely F161, F584 and 8552, which are currently used in the Brazilian aeronautic industry

  2. Filmes de nanodiamantes para aplicações em sistemas eletroquímicos e tecnologia aeroespacial Nanodiamond films for applications in electrochemical systems and aeronautics and space technology

    Directory of Open Access Journals (Sweden)

    Adriana Faria Azevedo

    2006-02-01

    Full Text Available The goal of this work is to show the use of undoped nanodiamond films as a new material for electrochemical and aerospace applications. Correlation between the applications and physico-chemical features of nano and conventional CVD polycrystalline diamond films are presented. An important and innovative application of these nanodiamonds is organic electrosynthesis, including pharmaceutical and water disinfection products, as well as electroanalytical applications, for example, development of biosensors for detection of glucose, glutamate and dopamine. In aeronautics and space developments, these nanodiamonds could be used as electrodes in rechargable batteries and in tribological investigations.

  3. 高分辨率可见光航空相机的热设计及热分析%Thermal design and analysis for the high resolution visible light aeronautic camera

    Institute of Scientific and Technical Information of China (English)

    王领华; 吴清文; 郭亮; 刘伟毅; 陈立恒

    2012-01-01

    In order to ensure the aeronautic camera working in the complex environment could fulfill its task successfully, the thermal design was presented. The corresponding thermal environment was established and the calculating method of the environmental heat fluxes and heat-transfer model of the camera was provided. The environment of the aeronautic camera was analyzed, and its requirements of thermal control was stated. The thermal control pattern of the aeronautic camera was depicted. In addition,the finite element model was built and the camera's two extreme conditions was simulated with the IDEAS-TMG software. In the extreme conditions, the results of the simulation indicate that: the temperature level of the primary mirror tube is 18±1℃; the axial temperature of the primary mirror tube is no more than 1.5 t; the circle temperature of the primary mirror tube is no more than 1.85℃, which could satisfy the requirements. The results of the simulation indicate that the thermal design is feasible and reasonable. The research jobs could give some guidance and reference for other aeronautic camera.%为了确保工作在复杂环境中的航空相机能顺利完成任务,对其热控制技术进行了研究.分析了相机的热环境,建立了其换热模型并给出了外热流的计算方法.针对航空相机所处的复杂飞行环境及所需的热控指标,详细阐述了相机的热设计方案,利用热分析软件IDEAS-TMG建立了相机的有限元模型并对相机的两个极端工况进行了仿真分析.仿真分析结果表明:在两个极端工况中,主镜筒温度水平18±1℃、主镜筒轴向温差不大于1.5℃和周向温差不大于1.85℃,均达到了热控指标要求,热设计方案合理可行.该研究方法对各类航空相机的热设计和热分析有一定的指导和借鉴作用.

  4. 航空高职学院毕业生就业见习实习基地建设研究%On Aeronautical Vocational College Graduates' Job Attachment Practice Base

    Institute of Scientific and Technical Information of China (English)

    胡良君; 王红梅; 宋锐; 李晓锋

    2013-01-01

      “航空高职学院毕业生就业见习实习基地”旨在解决航空职院毕业生缺乏工作经验,增加毕业生就业见习实习实践的机会,有效提高毕业生的就业率。%The aeronautical vocational college graduates' job attachment practice base aims to address solve the problem of aviation Vocational-Technical College graduates' lack of work experience, increase graduates' opportunity to practice, and effectively improve the employment rate of graduates.

  5. Aeronautic swarm cloud network oriented MAC protocol for aviation data link%面向航空集群云网络的航空数据链 MAC 协议

    Institute of Scientific and Technical Information of China (English)

    吕娜; 陈柯帆

    2016-01-01

    To meet the new network demand of aeronautic swarm operation in the future,a new concept named as “aeronautic swarm cloud network”is proposed,and the coupling mechanism between the communica-tion and mission demand is designed which provides the reference for the concrete technique of aeronautic swarm network.Based on the concept and mechanism,a media access control (MAC)protocol combined with orthogo-nal frequency division multiple access (OFDMA)-based variable-width channel allocation is designed.The mis-sion demand cognitive mechanism for the proposed protocol is designed in detail,which provides transmission support for intelligent mission planning and decision,the mission demand oriented hierarchical reservation meth-od for channel resource and the greedy reservation algorithm are put forward based on the characteristic of OFD-MA and the thinking of mission demand.Simulation results show that the aeronautic swarm cloud network ori-ented MAC protocol (ASCN-MAC)has a strong advantage in transmission support ability for intelligent mission planning and decision,throughput and real-time.The research has a certain referential significance or value for the new generation of aviation data link research for the new form of operation.%针对未来航空集群作战的全新网络需求,提出了“航空集群云网络”的概念,设计了网络通信层面与任务需求层面耦合机制,为航空集群网络的具体通信技术研究提供了参考,并在此基础上结合基于正交频分多址(or-thogonal frequency division multiple access,OFDMA)的可变带宽信道分配技术设计了一种面向航空集群云网络的媒体接入控制协议(aeronautic swarm cloud network oriented media access control protocol,ASCN-MAC)。详细设计了协议的任务需求认知机制,为智能化任务规划决策提供了通信支撑,并从需求出发,基于 OFDMA 的特点,提出了面向任务需求的层次化信道资源预约方

  6. Profile of body composition and cardiorrespiratory fitness in brazilian aeronauts. Perfil de la composición corporal y del condicionamiento cardiorrespiratorio en aeronautas militares brasileños.

    Directory of Open Access Journals (Sweden)

    Estélio Henrique Martin Dantas

    2007-10-01

    Full Text Available AbstractThe objective of this study was to verify the profile of body composition and cardiorrespiratory fitness in brazilian military aeronauts, correlating them. The sample include 1550 aviators of the masculine sex (31,82 ± 9,70 years. The individuals were divided and classified in normal group (GN, overweight (GOW and obesity (GOB . It was realized an anthropometric and cardiorespiratory fitness evaluation. The Pearson correlation test was used to investigate the mean correlation, but significative (r=-0,44; p=0,01, suggesting a relation of dependecy between the variables VO2máx and BMI. The total sample was classified as a good cardiorrespiratoy fitness showing a mean value (41,15 ± 7,54 ml.kg.min-. The sample presented mean values of BMI (25,29 ± 3,39 kg.m-2 and WC (0,87 ± 0,06 cm and showed a light overweight classification with moderate risks to the health. These results suggest for the aeronauts group, that independent of cardiorrespiratory fitness, only regular exercise not seems enough to prevent the weight excess.ResumenEl objetivo de este estudio fue verificar el perfil de la composición corporal y del nivel de condición cardiorrespiratoria en aeronautas brasileños, correlacionándoles. Participaron en el estudio 1550 aviadores de sexo masculino (31,82 ± 9,70 años. La muestra fue dividida en tres grupos: Grupo Normal (GN, Sobrepeso (GOW y Obesidad (GOB. Fue realizada una evaluación antropométrica y una evaluación de la aptitud cardiorrespiratoria. También se realizó la prueba de Kolmogorov- Smirnov para determinar la normalidad de la muestra y se utilizó la Correlación de Pearson para verificar la relación, entre las variables VO2máx e IMC (r=-0,44; p=0,01. Se evidenció que la mayoría de los aeronautas presentaban una buena aptitud física (41,15 ± 7,54 ml.kg.min-1. La muestra total analizada presentó valores medios de IMC(25,29 ± 3,39 kg.m-2 y CA (0,87 ± 0,06 cm permitiendo clasificarla con grado de

  7. Unsteady computational fluid dynamics in aeronautics

    CERN Document Server

    Tucker, P G

    2014-01-01

    The field of Large Eddy Simulation (LES) and hybrids is a vibrant research area. This book runs through all the potential unsteady modelling fidelity ranges, from low-order to LES. The latter is probably the highest fidelity for practical aerospace systems modelling. Cutting edge new frontiers are defined.  One example of a pressing environmental concern is noise. For the accurate prediction of this, unsteady modelling is needed. Hence computational aeroacoustics is explored. It is also emerging that there is a critical need for coupled simulations. Hence, this area is also considered and the tensions of utilizing such simulations with the already expensive LES.  This work has relevance to the general field of CFD and LES and to a wide variety of non-aerospace aerodynamic systems (e.g. cars, submarines, ships, electronics, buildings). Topics treated include unsteady flow techniques; LES and hybrids; general numerical methods; computational aeroacoustics; computational aeroelasticity; coupled simulations and...

  8. Special optical fibres and sensors for aeronautics

    Science.gov (United States)

    Lepesant, Jean-Pierre; Turpin, Marc

    1990-09-01

    The primary motivations for using fiber optics for onboard communications, flight, and engine control in aircrafts, are immunity from electromagnetic interference and lightnings, lighter weight, smaller size, and a high degree of data formatting flexibility. The present status of the optical fiber fabrication technologies is presented along with some of the applications currently accessible for optical fibers in terms of inflight communications, navigation, and physical data collection and optical power transmission. Typical values are given of the characteristics made achievable by the evolution of the technologies.

  9. Aeronautic Instruments. Section IV : Direction Instruments

    Science.gov (United States)

    Franklin, W S; Stillman, M H; Sanford, R L; Warner, John A C; Sylvander, R C; Rounds, E W

    1923-01-01

    Part one points out the adequacy of a consideration of the steady state gyroscopic motion as a basis for the discussion of displacements of the gyroscope mounted on an airplane, and develops a simple theory on this basis. Principal types of gyroscopic inclinometers are described and requirements stated. Part two describes a new type of stabilizing gyro mounted on top of a spindle by means of a universal joint, the spindle being kept in a vertical position by supporting it as a pendulum of which the bob is the driving motor. Methods of tests and the difficulties in designing a satisfactory and reliable compass for aircraft use in considered in part three. Part four contains a brief general treatment of the important features of construction of aircraft compasses and description of the principal types used.

  10. The Aeronautical Computer Human Interaction Lab

    OpenAIRE

    Benhacene, Raïlane

    2014-01-01

    Le travail autour du " programme IHM Aéronautique " est un sujet sur lequel l'ENAC dispose d'une compétence et d'une légitimité établies. De plus, l'ENAC dispose d'une population aéronautique au fait des problématiques spécifiques des métiers concernés (pilotage ou contrôle aérien). Un laboratoire dédié (ACHIL) servira de plate-forme pour ces activités. Cette plate-forme dédiée aux IHM sera mise en place, partagée avec des laboratoires partenaires ou des industriels, afin d'explorer de nouvea...

  11. The dosimetry thermoluminescent in civil aeronautics

    International Nuclear Information System (INIS)

    In Mexico we are carrying out a project to measure the ionizing radiation doses received by the crew members in civil airships as well as the environmental dose in the airships, with the purpose to determine if these doses surpass the cut-off one 0.11 mSv/h settled down by the IAEA for the publish in general and if therefore, these workers should be considered as occupational exposed works

  12. PORTFOLIO OF POTENTIAL STRATEGIES IN AERONAUTIC MAINTENANCE

    International Nuclear Information System (INIS)

    EADS divisions aim more and more at developing services associated to their platforms. EADS divisions, like Airbus and Eurocopter, are investigating on services associated to their platforms in order to add them value. One possible service consists in structural maintenance operation assistance, especially for NDT operations performed by the customer. EADS Innovation Works envisages three different and complementary enhanced structural maintenance categories. Enhanced NDT improves standard NDT operation environment. This is made possible by the existence of 'smart' NDT tools that are computer based and therefore able to support other functions. These functions range from local smart data processing and display to remote expert assisted operation. Passive Sensor Network relies on sensors permanently installed on aircraft structure. Interrogation of sensors is performed on ground and off line (while structure is not loaded except by its own weight). It can be done at arbitrary times in order to determine structure health. The aim is to give easy access to some hidden ''hot spots,'' to reduce human factor in structure health assessment and optimize maintenance. Structural Health Monitoring goes a step beyond Passive Sensor Network, because interrogation units are on board the aircraft and may be connected to aircraft network. It allows to use on-line techniques such as adapted acoustic emission and to automatically raise an alarm when a defect appears in the structure. This paper presents these different ways of improving structural maintenance operations in service, with their respective advantages and limitations.

  13. Aeronautical Engineering: A Continuing Bibliography. Supplement 384

    Science.gov (United States)

    1998-01-01

    This bibliography lists reports, articles and other documents announced in the NASA science and technical information system. Subject coverage includes: Design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics.

  14. Aeronautical Engineering: A Continuing Bibliography. Supplement 383

    Science.gov (United States)

    1998-01-01

    This bibliography lists reports, articles and other documents announced in the NASA science and technical information system. Subject coverage includes: Design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics.

  15. Chart Supplements - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The Chart Supplements are searchable by individual airport in PDF format. They contain data on public and joint use airports, seaplane bases, heliports, VFR airport...

  16. 14 CFR 61.129 - Aeronautical experience.

    Science.gov (United States)

    2010-01-01

    ... 2-hour cross country flight in a multiengine airplane in daytime conditions that consists of a total...-hour cross country flight in a multiengine airplane in nighttime conditions that consists of a total... point of departure; and (iii) One hour cross country flight in an airship in nighttime conditions...

  17. Digital, Satellite-Based Aeronautical Communication

    Science.gov (United States)

    Davarian, F.

    1989-01-01

    Satellite system relays communication between aircraft and stations on ground. System offers better coverage with direct communication between air and ground, costs less and makes possible new communication services. Carries both voice and data. Because many data exchanged between aircraft and ground contain safety-related information, probability of bit errors essential.

  18. 基于状态空间法的航空同步发电机建模方法研究%State Space Model of Aeronautic Synchronous Generator

    Institute of Scientific and Technical Information of China (English)

    刘勇智; 刘聪

    2011-01-01

    The structure of synchronous generator and improved Park equation based on dq0 reference frame was introduced to get the equivalent circuit after adding the compensating reactance in the work, and the state space model can be set based on the modern controlling theories. Comparisons of the loading effects were made between simulation results and actual data obtained from an aeronautic synchronous generator, the results show that the identified model is valid to reflect the real-time loading effects.%介绍了同步发电机的结构和dq0坐标系派克方程,引入补偿电抗,得到了改进的dq轴等效电路,应用现代控制理论,建立了同步发电机的状态空间模型,并以某型航空同步发电机为例,对模型的负载特性进行了仿真验证.结果表明,所建模型能很好地反映同步电机的实时动态负载特性.

  19. Development of a 3-D model for eddy current testing: application for fastened structures in aeronautics; Developpement d'un modele pour le controle non destructif par courants de Foucault de structures rivetees en aeronautique

    Energy Technology Data Exchange (ETDEWEB)

    Paillard, S

    2007-12-15

    One of the Eddy Current Testing issues in aeronautics is the inspection of fastened structures to detect flaws nearby rivets which can grow because of mechanical stress. EADS and the CEA LIST have started a collaborative work with the support of the Ile-de-France Region to develop a simulation tool of EC fastened structures testing, integrated to the CIVA platform, aimed at conceiving testing methods, optimizing and qualifying it. The volume integral method using the Green dyadics formalism has been chosen in order to get a fast resolution of Maxwell equations. A first milestone was to build a simulation model of multilayer structures testing, thanks to the use of the multilayer Green dyads. Because of the rivet volume, 60 times bigger than the one of a typical flaw, a large number of discretization cells are needed. Therefore an iterative method has been developed in order to numerically solve large calculation zones. Finally, the flaw response simulation mostly has to cope with a scale issue between the size of the rivet and the one of the flaw, the latter being much smaller in a direction than the former. The whole model has been experimentally validated and compared to other simulation models at the important development steps: multilayer configuration, iteration resolution, and flaw signature. (author)

  20. Senior Senator from Florida and Chairman, Senate Committee on Space, Aeronautics and Related Sciences W. Nelson, visiting the ATLAS cavern and LHC tunnel with ATLAS Collaboration Spokesperson P. Jenni and AMS Collaboration Spokesperson S.C.C.Ting, 16 March 2008.

    CERN Multimedia

    Maximilien Brice

    2008-01-01

    Senior Senator from Florida and Chairman, Senate Committee on Space, Aeronautics and Related Sciences W. Nelson, visiting the ATLAS cavern and LHC tunnel with ATLAS Collaboration Spokesperson P. Jenni and AMS Collaboration Spokesperson S.C.C.Ting, 16 March 2008.

  1. Connectivity on one-dimensional flight route in aeronautical Ad hoc network%基于一维航线的航空自组网连通性研究

    Institute of Scientific and Technical Information of China (English)

    SONG Yu-long; LUO Chang-yuan; ZHANG Yun; CHENG Jia-jia

    2014-01-01

    为了研究航空自组网的网络连通性问题,针对部分空域航线单一、航班较少的情况,提出一种基于一维航线的连通性研究方法。该方法考虑了飞机航线分层、双向飞行等特点,据此建立适当的飞机分布模型,运用整体思想推导出可以衡量一维航线实际连通性的数学表达式,并通过实验证明了理论计算结果的正确性。根据实际航班数据仿真得到了我国部分空域上航空自组网的连通概率,实例仿真结果表明,利用反向飞机的转发作用,一维双向航线的连通率可以满足航空自组网的组网要求。%In order to research on the connectivity of aeronautical Ad hoc, this paper proposed a method based on the connectivity of single-dimensional airline for the problems of airline routes singleness and the lack of flights. Considering the features of fligh

  2. Corrosión de Aleaciones Aeronáuticas de Aluminio y sus Componentes Relacionada a la Expresión Proteica del Hongo Hormoconis resinae Corrosion of Aeronautical Aluminium Alloys and its Components Related to the Proteic Expression of the Fungus Hormoconis resinae

    Directory of Open Access Journals (Sweden)

    Raquel Araya

    2008-01-01

    Full Text Available Este artículo muestra que los requerimientos nutricionales de oligoelementos constituyen la fuerza impulsora de la corrosión influenciada microbiológicamente que produce Hormoconis resinae en aleaciones aeronáuticas de aluminio. Se compararon perfiles proteicos de biopelículas del hongo cultivado en turbocombustible aeronáutico mediante electroforesis en geles de poliacrilamida. Se caracterizó la morfología de ataque de las aleaciones y de sus componentes metálicos puros y el crecimiento de hifas sobre cada metal mediante microscopía electrónica de barrido ambiental. Se concluyó que la corrosión estaría asociada a aleantes que actuarían como oligoelementos para el microorganismo.This article shows that the metabolic needs of oligoelements constitute the driving force of the microbiologically influenced corrosion produced by Hormoconis resinae on aeronautical aluminium alloys. Protein profiles of biofilms generated by fungal strains cultivated in aeronautical fuel were compared by electrophoresis in poliacrylamide gels. The morphology attack of alloys, its component metals and the growth of hyphae in cultures were characterized by means of environmental scanning electronic microscopy. One of the main conclusions is that corrosion would be associated to alloying elements that would act as oligoelements for the microorganism.

  3. Turbulent combustion modelization via a tabulation method of detailed kinetic chemistry coupled to Probability Density Function. Application to aeronautical engines; Modelisation de la combustion turbulente via une methode tabulation de la cinetique chimique detaillee couplee a des fonctions densites de probabilite. Application aux foyers aeronautiques

    Energy Technology Data Exchange (ETDEWEB)

    Rullaud, M.

    2004-06-01

    A new modelization of turbulent combustion is proposed with detailed chemistry and probability density functions (PDFs). The objective is to capture temperature and species concentrations, mainly the CO. The PCM-FTC model, Presumed Conditional Moment - Flame Tabulated Chemistry, is based on the tabulation of laminar premixed and diffusion flames to capture partial pre-mixing present in aeronautical engines. The presumed PDFs is introduced to predict averaged values. The tabulation method is based on the analysis of the chemical structure of laminar premixed and diffusion flames. Hypothesis are presented, tested and validated with Sandia experimental data jet flames. Then, the model is introduced in a turbulent flow simulation software. Three configurations are retained to quantify the level of prediction of this formulation: the D and F-Flames of Sandia and lifted jet flames of methane/air of Stanford. A good agreement is observed between experiments and simulations. The validity of this method is then demonstrated. (author)

  4. 基于PLC控制的航空碳-碳复合材料X射线数字成像检测装置的设计与研发%Development and Design on X-Ray Digital Imaging Detection Equipment of Aeronautic Carbon-carbon Composite Based on PLC Control

    Institute of Scientific and Technical Information of China (English)

    蔡建刚; 赵肖东; 陈兆兴; 陈明

    2013-01-01

    航空碳—碳复合材料X射线数字成像检测装置是供航空制造业中小型关键复合材料零部件X射线检测的设备.依据被检测产品的特点,该装置设计有前后、左右、上下六个自由度,可实现旋转、倾斜等运动形式.其传动系统采用步进电机和伺服电机驱动;谐波减速机、蜗杆减速机减速;滚动轴承支承、滚动直线导轨导向;滚珠丝杠、齿轮传动的方式.控制系统采用模块化结构的PLC控制,完成具体的运动执行控制.速度调节范围为0.1~3.0 m/min,定位误差≤0.2 mm,电机联动误差≤1 ms(一个PLC程序扫描周期),根据被检工件的检测要求实现了实时多角度、全位置X射线数字成像检测.%X-ray digital imaging detection device of aeronautic carbon-carbon composite is X-ray inspection equipment for the small and medium-sized pivotal composite material parts in the aeronautic manufacturing industry. In accordance with the characteristics of the detected product, six degrees of freedom of the front and back, left and right, up and down is designed, it can realize forms of movement of rotation and inclination. The transmission system adopts stepper motor and servo motor to drive, harmonic reducer and worm reducer to decelerate, rolling bearings to support and rolling linear guideway to guide, ball screw and gear to transmit. The control system uses a modular structure PLC control to complete the implementation of the specific motion control. In the device, the speed regulating range is form 0. 1 to 3.0m/min, the positioning error is less than 0.2mm, the motor linkage error is less than lms (a PLC program scan cycle). According to detection requirements of detected workpiece, real-time multi-angle and all-position X-ray digital imaging detection is achieved.

  5. 47 CFR 76.1804 - Aeronautical frequencies: leakage monitoring (CLI).

    Science.gov (United States)

    2010-10-01

    ... carrier or other signal component with an average power level across a 25 kHz bandwidth in any 160... average powers measured over a 2.5 kHz bandwidth as described in the introductory paragraph to this rule..., shall be personally signed either electronically or manually by the operator; by one of the partners,...

  6. Innovation and Its Diffusion Among Regions:The Aeronautical Case

    OpenAIRE

    Alfonso-Gil, Javier

    2006-01-01

    Information (the level of, and its rate of increase) is key for creation and diffusion of innovation and more so in an increasing interconnected world. Therefore, knowing how information is transform in innovation, who are the agents responsible for it and where and why is mostly going to happen are important questions to answer. Furthermore, besides dealing with the production of innovation we have to confront with its diffusion both, between firms within the same geographical proximity and ...

  7. Grand Canyon VFR Chart - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The Federal Aviation Administration (FAA) digital-Visual Chart series is designed to meet the needs of users who require georeferenced raster images of a FAA Visual...

  8. A Thermodynamic Study of Air Cycle Machine for Aeronautical Applications

    OpenAIRE

    Santos, A.P.P.; C.R. Andrade; Zaparoli, E. L.

    2014-01-01

    This work focuses on a thermodynamic study of an air cycle machine (ACM) for aircraft air-conditioning purposes. The ACM configuration mainly includes two compact heat exchangers, a compressor and an expander. The energy to drive this machine comes from the compressed air bleed from the compressor of the aircraft propulsion turbine. Some design features that affect the ACM performance will be studied: aircraft Mach number, cabin altitude, cabin recirculated air temperature and the percentage ...

  9. National Aeronautics and Space Administration Budget Estimates, Fiscal Year 2011

    Science.gov (United States)

    2010-01-01

    The Budget includes three new robust exploration programs: (1) Technology demonstration program, $7.8 five years. Funds the development and demonstration of technologies that reduce the cost and expand the capabilities of future exploration activities, including in-orbit refueling and storage. (2) Heavy-Lift and Propulsion R&D, $3.1 billion over five years. Funds R&D for new launch systems, propellants, materials, and combustion processes. (3) Robotic precursor missions, $3.0 billion over five years. Funds cost-effective means to scout exploration targets and identify hazards and resources for human visitation and habitation. In addition, the Budget enhances the current Human Research Program by 42%; and supports the Participatory Exploration Program at 5 million per year for activities across many NASA programs.

  10. National Aeronautics and Space Administration Training Grant Supplement

    Science.gov (United States)

    DeWitt, Kenneth J.

    2005-01-01

    The following section summarizes the impact of the Ohio Space Grant Consortium (OSGC) in Ohio and to NASA over the last four-year period (February 1, 2001 to April 30, 2005) and highlights the important accomplishments of the consortium. The strength of the OSGC network of universities, community colleges, government agencies, industry, and outreach affiliates is well-established and is growing. The OSGC Consortium Management Structure was designed and remains committed to using the talents and diversity of everyone within this collaborative network, and operational policies and procedures are such that all consortium members are active contributors resulting in quality OSGC programs in research, education and service, while receiving a relatively small amount of NASA funds. The number of quality activities, both on- and off-campus, and collaborations/partnerships that OSGC has established with NASA and government agencies, state and local government, educational institutions, and private industry, has been impressive. Further desired university affiliate expansion requires additional funds. Diversity is shown in the OSGC 12-member Executive Committee by the presence of three campus representatives from Central State University, Wilberforce University, and The Ohio State University (two underrepresented minority, one female). One additional female campus representative (Cleveland State University) is currently on sabbatical leave and a valuable alternate member attends. Other additional female and underrepresented minority members are on the larger OSGC Advisory committee. All committee members participate fully in all consortium management and policy decisions. The OSGC Executive Committee strives to achieve and communicate a culture of trust, respect, teamwork, open communication, creativity, and empowerment. These programs have shown results and impact by their visibility and importance to Ohio and to NASA, resulting in strategic alliances created throughout Ohio. These alliances have improved over the last 4 years.

  11. National Aeronautics and Space Administration 1999 Accountability Report

    Science.gov (United States)

    1999-01-01

    This Accountability Report consolidates reports required by various statutes and summarizes NASA's program accomplishments and its stewardship over budget and financial resources. It is a culmination of NASA's management process, which begins with mission definition and program planning, continues with the formulation and justification of budgets for the President and Congress, and ends with the resulting scientific and engineering program accomplishments. The report covers activities from October 1, 1998, through September 30, 1999, with a discussion of some subsequent events. Program accomplishments included the deployment and operation of the Chandra X-ray Observatory, the delivery of supplies and equipment needed to live and operate on the International Space Station, and the development of the first global 3-D map of Mars. Achievements are highlighted in the Statement of the Administrator and summarized in the performance section of this report.

  12. National Aeronautics and Space Administration: 1998 Accountability Report

    Science.gov (United States)

    1999-01-01

    This Accountability Report summarizes NASA's program accomplishments and its stewardship over budget and financial resources. The report is the culmination of NASA's management process, which begins with mission definition and program planning, continues with formulation and justification of NASA's budgets for the President and Congress, and ends with NASA scientific and engineering program accomplishments. This report covers NASA's activities from October 1, 1997, through September 30, 1998, with discussion of some subsequent events.

  13. VFR Class B Graphics - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — These graphics are designed to increase safety and aid pilots in gaining situational awareness within existing and redesigned Class B areas. The graphic provides an...

  14. National Aeronautics and Space Administration plans for space communication technology

    Science.gov (United States)

    Alexovich, R. E.

    1979-01-01

    A program plan is presented for a space communications application utilizing the 30/20 GHz frequency bands (30 GHz uplink and 20 GHz downlink). Results of market demand studies and spacecraft systems studies which significantly affect the supporting research and technology program are also presented, along with the scheduled activities of the program plan.

  15. CAD/CAM in the Brazilian aeronautical industry

    Science.gov (United States)

    Lampi, L. H.; Embraer, S. A.

    Features, applications and progress in the usage of CAD/CAM since 1980 by an aircraft manufacturer in Brazil are described. The system comprises 34 graphics work stations dedicated to structural design, lofting, electrical cable routing, finite element modeling and quality control. Standardized work methods have been devised to enhance productivity. Programs have been defined for finite element stress analysis and generating wiring diagrams. The computerized design capabilities have increased productivity for hole boring accuracy through work on digitized controllers. Psychological testing has been initiated to identify users who can adapt more easily to CAD/CAM utilization.

  16. Send Student Interest Skyward!: Soaring Teaches Aeronautics Basics

    Science.gov (United States)

    Scarcella, Joe; Wallace, Art

    2011-01-01

    Gliders and sailplanes provide a great launching platform for teaching about technology and scientific principles. Soaring is technological innovation in action, using earth's natural resources for energy and endurance during flight. This article focuses on the basics of soaring, which educators can use to increase excitement and interest in the…

  17. Send Student Interest Skyward! Soaring Teaches Aeronautics Basics

    Science.gov (United States)

    Scarcella, Joe; Wallace, Art

    2011-01-01

    Gliders and sailplanes provide a great launching platform for teaching about technology and scientific principles. Soaring is technological innovation in action, using earth's natural resources for energy and endurance during flight. This article focuses on the basics of soaring, which educators can use to increase excitement and interest in the…

  18. Taking Flight: Using a Wind Tunnel to Teach Aeronautic Principles

    Science.gov (United States)

    Zembal-Saul, Carla; Huckans, John H.; Walker, Dean C.; Hershberger, Kimber; Kurz, Nathan A.; Reed, Diane; Cole, Milton W.

    2007-01-01

    Several teachers from State College (Pennsylvania) Area School District became intrigued with helping their students better understand the science associated with a unit on air and aviation. In particular, they observed that students often encountered difficulty with abstract flight concepts, such as lift, thrust, and drag. Content issues became…

  19. [Ionizing radiation in the aeronautics industry. Non-destructive testing].

    Science.gov (United States)

    La Verde, R; Travaglini, C

    1983-08-25

    The constant increase in the non-military use of nuclear energy in various fields induced this study of one particular field: the aero industry. Alitalia has been using gammagraphy and industrial metallography for nondestructive testing for over 20 years. Workers exposed to ionising radiations at work are protected by precisely detailed standards based on extremely rigorous national and international legislation. The health and protection of these workers is entrusted to a Company Doctor and a Qualified Specialist. The latter is thought to be indispensable since he is responsible for primary preventions as well as prompt diagnosis.

  20. 76 FR 12211 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2011-03-04

    ..., from 8:30 a.m. to 5 p.m. at Advanced Management Technology, Inc. (AMTI), 1515 Wilson Boulevard... meet April 27 and 28, 2011 from 8:30 a.m. to 5 p.m. ADDRESSES: The meeting will be hosted by Advanced Management Technology, Inc. (AMTI), 1515 Wilson Boulevard, Arlington, VA 22209. FOR FURTHER...

  1. Surface Quality of Amilled Gamma Titaniumaluminide for Aeronautical Applications

    Directory of Open Access Journals (Sweden)

    Radkowski Grzegorz

    2014-06-01

    Full Text Available Gamma titanium aluminides are an interesting alternative for nickel, iron or cobalt matrix superalloys. Due to the advantageous strength properties at high temperatures they can successfully replace superalloys in applications such as high pressure compressor blades, low pressure turbine blades, high pressure compressor case, low pressure turbine case. Milling is one of the processes that can be applied in the forming elements made from this type of alloys for the aviation industry. Research included the selection of tool, the process kinematics and the range of milling gamma titanium aluminide (Ti-45Al-5Nb-0.2B-0.2C process parameters were carried out. Milling can be an effective method of forming of elements made of gamma TiAL in the range of processing parameters: vc = 20-70 m/min, ap = 0.3-0.7 mm, fz = 0.1- 0.45 mm/tooth. In the tests carried out the best results were obtained using a R300-016A20L- 08L milling cutter, S30T tool coating and in-cut milling.

  2. Web-Based Distributed Simulation of Aeronautical Propulsion System

    Science.gov (United States)

    Zheng, Desheng; Follen, Gregory J.; Pavlik, William R.; Kim, Chan M.; Liu, Xianyou; Blaser, Tammy M.; Lopez, Isaac

    2001-01-01

    An application was developed to allow users to run and view the Numerical Propulsion System Simulation (NPSS) engine simulations from web browsers. Simulations were performed on multiple INFORMATION POWER GRID (IPG) test beds. The Common Object Request Broker Architecture (CORBA) was used for brokering data exchange among machines and IPG/Globus for job scheduling and remote process invocation. Web server scripting was performed by JavaServer Pages (JSP). This application has proven to be an effective and efficient way to couple heterogeneous distributed components.

  3. SEE - Sight Effectiveness Enhancement. Results of the aeronautical evaluation

    DEFF Research Database (Denmark)

    Andersen, H.B.; Alapetite, Alexandre

    2006-01-01

    in Bordeaux, France. The simulator was equipped with a head-up display and the simulated environments specified and established in the project. Theevaluation has involved as test subjects six professional 737 airline pilots. The document describes objective and subjective measures of performance. The analysis...

  4. K/Ka-band Antenna for Broadband Aeronautical Mobile Application

    Science.gov (United States)

    Densmore, A.

    1994-01-01

    The Jet Propulsion Laboratory (JPL) has recently begun the development of a Broadband Aeronauical Terminal (BAT) for duplex video satellite communications on commercial or business class aircraft. The BAT is designed for use with NASA's K/Ka-band Advanced Communications Technology Satellite (ACTS).

  5. 基于SWOT分析法的图书馆电子阅览室发展战略规划--以南昌航空大学图书馆为例%Strategic Development Planning of Library ’s Electronic Reading Room Based on SWOT Analysis---Taking the Library of Nanchang Aeronautical University as an Example

    Institute of Scientific and Technical Information of China (English)

    拱洁凡; 何小东

    2015-01-01

    ABSTRACT:Taking the library of Nanchang Aeronautical University as an example, this paper expounds the development status of university library’electronic reading room, and by using SWOT analysis method, probes into the problems existing in library’s electronic reading room, and based on this, establishes a SWOT matrix for library’s electronic reading room based on this, makes an analysis on various combinations, and puts forward the development strategy for library’s electronic reading room.%以南昌航空大学图书馆为例,阐述了高校图书馆电子阅览室的发展现状,并利用SWOT分析法,探讨了图书馆电子阅览室存在的问题,在此基础上构建了图书馆电子阅览室SWOT矩阵,对各种组合加以分析,提出了图书馆电子阅览室的发展战略。

  6. 基于NASA地球观测数据库的区域风电功率波动特性分析%Study on the Profiling of China's Regional Wind Power Fluctuation Using GEOS-5 Data Assimilation System of National Aeronautics and Space Administration of America

    Institute of Scientific and Technical Information of China (English)

    于大洋; 韩学山; 梁军; 宋曙光

    2011-01-01

    In China, inadequate historical wind data hinders the profiling of wind power fluctuation at the regional level, which is the fundamental work for the wind power integration. This paper proposes a method to assess the seasonal and diurnal wind power patters based on the wind speed data from the National Aeronautics and Space Administration (NASA) Goddard Earth Observing System Model, Version 5 Data Assimilation System (GEOS-5 DAS). The Gipe formula is applied to get the vertical distribution of the wind speed. The wind speed is transformed into the electric power according to the power curve of Vestas V90-2.0MW turbine. A quantitative analysis is made for six wind power bases in China to present the difference of seasonal wind power patters and the regional correlations of hourly wind power patters. The method and results provide the basis for the regional wind power scheduling and dispatching.%针对大范围和长期风速观测网络不完善、风资源数据缺乏的问题,提出利用美国航天局(NASA)Goddard地球观测系统数据同化系统的版本5(GEO-5 DAS)的全球风速数据,对国内大范围风电功率波动进行评估的方法.根据GEOS-5 DAS的50 m高度风速和Gipe公式得到风速的垂直分布,按照Vestas V90-2.0 Mw风电机组的功率特性曲线将风速转化为风电功率,得到不同时间尺度下的容量因数曲线.对中国正在建设的6个千万千瓦级风电基地的季节性风电功率波动、小时功率波动及其季节性差异和地域相关性进行了定量分析.所提出的分析方法和结果为区域风电科学规划和优化调度提供了科学的依据.

  7. Avaliações térmica e reológica da matriz termoplástica PEKK utilizada em compósitos aeronáuticos Thermal and rheological evaluation of PEKK thermoplastic matrix for aeronautical application

    Directory of Open Access Journals (Sweden)

    Rogério L. Mazur

    2008-09-01

    resistance combined with its low density make PEKK an attractive option for a variety of applications in aerospace and aeronautical field. The aim of the present work is to analyze the influence of the thermal and rheological parameters of PEKK using the techniques Fourier Transform InfraRed (FT-IR, differential scanning calorimetry (DSC, thermogravimetry (TG and rheology, in the definition of processing thermal cycle to be utilized with the hot compression molding of thermoplastic composites. The results obtained from the thermal and rheological analyses showed that PEKK has an attractive balance of properties, such as a high transition temperature (Tg = 153-156 °C and of being able to be processed at a moderate temperature, between the melting (310-325 °C and degradation (352-366 °C temperatures, mainly when compared with other polymers, including PEEK (polyether ether ketone, PEI (Polyetherimide and PPS (polyphenylene sulfide. From these results, it was possible to establish appropriate thermal and rheological parameters to be used in hot compression molding of advanced polymeric laminates.

  8. Avaliação da temperatura de transição vítrea de compósitos poliméricos reparados de uso aeronáutico Evaluation of glass transition temperature of the repaired polymeric composites of aeronautical use

    Directory of Open Access Journals (Sweden)

    Jane M. F. de Paiva

    2006-03-01

    lay-up process used in aeronautical industry. Afterwards, simulated damages, scarf type, were made and overlapping layers of F155 epoxy resin prepregs repaired them. The DMTA curves show the effects of combination of different systems resins on the Tg values and, consequently, on the service temperature of the repaired laminate. The used repairing material (based on epoxy resin F155 and on epoxy adhesive film FM73 decreased the Tg of the repaired laminates in approximately 30 °C for the carbon and glass laminates. The conditioning of aramide laminate under elevated humidity and temperature provoked a more decrease of the Tg (reduction of approximately 40 °C. The Tg reduction for the repaired laminates is attributed to the adhesive film migration into the F155 resin system during the cure process and also to the resin plasticization by water diffusion during the hygrothermal conditioning. The Tg reduction leads to a decrease of the service temperature of the repaired polymeric composite.

  9. 从多功能空间设计看现代高校图书馆建设--以南京航空航天大学将军路校区图书馆为例%Discussion on the Construction of Modern University Library from the Design of Multi-functional Space---Case Study of Jiangjun Road Campus Library of Nanjing University of Aeronautics & Astronautics

    Institute of Scientific and Technical Information of China (English)

    魏翠娟

    2015-01-01

    ABSTRACT:Taking Jiangjun Road Campus Library of Nanjing University of Aeronautics&Astronautics as an example, this paper expounds the overall construction of this library, and introduces in detail its multi-functional space including the collection and study space, digital resource space, academic research space, leisure and social space, activity space and self-service space in order to provide the reference and enlightenment for the construction of university library.%以南京航空航天大学将军路校区图书馆为例,阐述了该馆的整体建设情况,对其多功能空间(藏书及学习空间、电子资源空间、学术研讨空间、休闲社交空间、活动空间、自助服务空间)进行了详细介绍,以期为现代大学图书馆建设提供参考和启示。

  10. Annual view (1999) - aeronautic relation/space relation. Aeronautic relation - special aircraft; Nenkan tenbo (1999) koku kankei uchu kankei. Tokushu kokuki kanren

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-05

    The military use tilt rotor entered the practical use stage, and in May the first plane of quantity model MV-22B was delivered to the U.S. Marine Corps. As to the private use BA609, the development is being proceeded with, jointly with Kawasaki Heavy Industries which also joined the development, and that is planned to be completed in 2000. Relating to the unmanned aircraft, in Japan, Fuji Heavy Industries has completed aircraft with jet engine for experiment on soft landing under the lunar probe orbitary satellite plan worked on by National Space Development Agency of Japan and the Institute of the Space and Astronautical Science. The flight test is planned to be conducted in 2000. At National Aerospace Laboratory, Science and Technology Agency, non-powered unmanned supersonic experimental transport is planned, and the flight test is expected to be made in FY 2002. At NASA of the U.S., a prototype made a flight in August of the unmanned flying wing which flies at a high altitude for a long time by solar cells and fuel cells. The airship is now reviewed in the light of the environmental problem. National Aerospace Laboratory, Science and Technology Agency has started the R and S of an unmanned airship aimed at stationarily staying in the stratosphere using solar cells and fuel cells. (NEDO)

  11. 77 FR 63897 - Notice of License Terminations for National Aeronautics and Space Administration; Plum Brook...

    Science.gov (United States)

    2012-10-17

    ...), concerning the proposed action to decommission the NASA PBRF, appeared in the Federal Register (65 FR ] 12040... Assessment and Finding of No Significant Impact concerning this action in the Federal Register (65 FR 16421... for a Hearing'' for the PBRF in the Federal Register (72 FR 46521; August 20, 2007). On March 24,...

  12. Conceptual Design and Cost Estimate of a Subsonic NASA Testbed Vehicle (NTV) for Aeronautics Research

    Science.gov (United States)

    Nickol, Craig L.; Frederic, Peter

    2013-01-01

    A conceptual design and cost estimate for a subsonic flight research vehicle designed to support NASA's Environmentally Responsible Aviation (ERA) project goals is presented. To investigate the technical and economic feasibility of modifying an existing aircraft, a highly modified Boeing 717 was developed for maturation of technologies supporting the three ERA project goals of reduced fuel burn, noise, and emissions. This modified 717 utilizes midfuselage mounted modern high bypass ratio engines in conjunction with engine exhaust shielding structures to provide a low noise testbed. The testbed also integrates a natural laminar flow wing section and active flow control for the vertical tail. An eight year program plan was created to incrementally modify and test the vehicle, enabling the suite of technology benefits to be isolated and quantified. Based on the conceptual design and programmatic plan for this testbed vehicle, a full cost estimate of $526M was developed, representing then-year dollars at a 50% confidence level.

  13. 77 FR 67261 - Airworthiness Directives; Aeronautical Accessories, Inc., High Landing Gear Forward Crosstube...

    Science.gov (United States)

    2012-11-09

    ... Accessories, Inc., High Landing Gear Forward Crosstube Assembly AGENCY: Federal Aviation Administration (FAA... Accessories, Inc. (AAI) high landing gear forward crosstube assemblies (crosstubes) installed on Agusta S.p.A..., collapse of the landing gear, and subsequent loss of control of the helicopter. DATES: This AD is...

  14. 77 FR 37768 - Airworthiness Directives; Aeronautical Accessories, Inc., High Landing Gear Aft Crosstube Assembly

    Science.gov (United States)

    2012-06-25

    ... Accessories, Inc., High Landing Gear Aft Crosstube Assembly AGENCY: Federal Aviation Administration (FAA), DOT... Accessories, Inc. (AAI), High Landing Gear Aft Crosstube Assembly (aft crosstube) installed on certain Bell... failure of a crosstube, collapse of the landing gear, and subsequent loss of control of the...

  15. Massively parallel conjugate heat transfer methods relying on large eddy simulation applied to an aeronautical combustor

    International Nuclear Information System (INIS)

    Optimizing gas turbines is a complex multi-physical and multi-component problem that has long been based on expensive experiments. Today, computer simulation can reduce design process costs and is acknowledged as a promising path for optimization. However, performing such computations using high-fidelity methods such as a large eddy simulation (LES) on gas turbines is challenging. Nevertheless, such simulations become accessible for specific components of gas turbines. These stand-alone simulations face a new challenge: to improve the quality of the results, new physics must be introduced. Therefore, an efficient massively parallel coupling methodology is investigated. The flow solver modeling relies on the LES code AVBP which has already been ported on massively parallel architectures. The conduction solver is based on the same data structure and thus shares its scalability. Accurately coupling these solvers while maintaining their scalability is challenging and is the actual objective of this work. To obtain such goals, a methodology is proposed and different key issues to code the coupling are addressed: convergence, stability, parallel geometry mapping, transfers and interpolation. This methodology is then applied to a real burner configuration, hence demonstrating the possibilities and limitations of the solution. (paper)

  16. Can fiber laser improve high speed multi-pulse drilling of aeronautic alloy?

    Science.gov (United States)

    Nguyen, M.; Loumena, C.; Bussière, A.; Kling, R.; Delor, C.; Freysz, E.

    2016-03-01

    Processing of helicopter engines faster, better and more reliably is the triptych which binds LOMA, ALPhANOV and TURBOMECA. In current production machines, flash lamp pumped lasers are employed to drill thousands of cooling holes with specific geometries and diameters to ensure a homogeneous air flow over the surface. However we aim to enhance the production process. Therefore, the three partners started an initiative to identify and overcome the shortcomings of the current process, where the laser source is a key element for improvement. In this paper, we report on the latest developments in multi-pulse drilling using an IPG fiber laser. The latter delivers, at a tunable repetition rate (from single shot up to 2 kHz), laser pulses whose width and peak power are adjustable in between 0.2 - 10 ms and 0 - 12 kW respectively. We have focused our work on drilling of thick sheets of metal alloys with different geometries and different processing strategies. We will show that using such laser system it is possible to decrease the processing time while limiting the heat affected zones and collateral effects. Finally, the impact of the different physical processes in play during the drilling on the geometry of the holes will be discussed.

  17. Remote sensing of land processes: Sponsored programs of study by the National Aeronautics and Space Administration

    Science.gov (United States)

    Asrar, G.; Wickland, D. E.; Baltuck, M.; Ruzek, M. J.; Murphy, R. E.

    1988-01-01

    The NASA Land Processes Program consists of four interrelated disciplines which support studying the terrestrial geology, ecology, hydrology, and remote sensing science. The first three represent the space based components of classical science disciplines, while the last discipline is the study of the physics, biology, and chemistry of the land surface as it relates to the interaction of electromagnetic energy with the land surface.

  18. Adapting computational optimization concepts from aeronautics to nuclear fusion reactor design

    Directory of Open Access Journals (Sweden)

    Baelmans M.

    2012-10-01

    Full Text Available Even on the most powerful supercomputers available today, computational nuclear fusion reactor divertor design is extremely CPU demanding, not least due to the large number of design variables and the hybrid micro-macro character of the flows. Therefore, automated design methods based on optimization can greatly assist current reactor design studies. Over the past decades, “adjoint methods” for shape optimization have proven their virtue in the field of aerodynamics. Applications include drag reduction for wing and wing-body configurations. Here we demonstrate that also for divertor design, these optimization methods have a large potential. Specifically, we apply the continuous adjoint method to the optimization of the divertor geometry in a 2D poloidal cross section of an axisymmetric tokamak device (as, e.g., JET and ITER, using a simplified model for the plasma edge. The design objective is to spread the target material heat load as much as possible by controlling the shape of the divertor, while maintaining the full helium ash removal capabilities of the vacuum pumping system.

  19. Normal spectral emittance of Inconel 718 aeronautical alloy coated with yttria stabilized zirconia films

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez-Fernandez, L. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Industria de Turbo Propulsores, S.A., Planta de Zamudio, Edificio 300, 48170 Zamudio, Bizkaia (Spain); Campo, L. del [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Perez-Saez, R.B., E-mail: raul.perez@ehu.es [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain); Tello, M.J. [Departamento de Fisica de la Materia Condensada, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia (Spain)

    2012-02-05

    Highlights: Black-Right-Pointing-Pointer Emittance of Inconel 718 coated with plasma sprayed yttria stabilized zirconia. Black-Right-Pointing-Pointer The coating is opaque for {lambda} > 9 {mu}m and semi-transparent for {lambda} < 9 {mu}m. Black-Right-Pointing-Pointer In the semi-transparent region the emittance decreases with coating thickness. Black-Right-Pointing-Pointer 300 {mu}m thick coatings are still semi-transparent. Black-Right-Pointing-Pointer In the opaque region the surface roughness determines the emittance level. - Abstract: Knowledge of the radiative behaviour of the yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs) is needed to perform radiative heat transfer calculations in industrial applications. In this paper, normal spectral emittance experimental data of atmospheric plasma sprayed (PS) YSZ films layered on Inconel 718 substrates are shown. The spectral emittance was measured between 2.5 and 22 {mu}m on samples with film thicknesses ranging from 20 to 280 {mu}m. The samples were heated in a controlled environment, and the emittance was measured for several temperatures between 330 and 730 Degree-Sign C. The dependence of the spectral emittance with film thickness, surface roughness and temperature has been studied and compared with the available results for YSZ TBCs obtained by electron-beam physical vapour deposition. The PS-TBC samples show a Christiansen point at {lambda} = 12.8 {mu}m. The films are semi-transparent for {lambda} < 9 {mu}m, and opaque for {lambda} > 9 {mu}m. In the semi-transparent region, the contribution of the radiation emitted by the Inconel 718 substrate to the global emittance of the samples is analysed. In addition, the influence of the roughness in the emittance values in the opaque spectral region is discussed. Finally, the total normal emittance is obtained as a function of the TBC thickness.

  20. A 3D Model for Eddy Current Inspection in Aeronautics: Application to Riveted Structures

    Science.gov (United States)

    Paillard, S.; Pichenot, G.; Lambert, M.; Voillaume, H.; Dominguez, N.

    2007-03-01

    Eddy current technique is currently an operational tool used for fastener inspection which is an important issue for the maintenance of aircraft structures. The industry calls for faster, more sensitive and reliable NDT techniques for the detection and characterization of potential flaws nearby rivet. In order to reduce the development time and to optimize the design and the performances assessment of an inspection procedure, the CEA and EADS have started a collaborative work aiming at extending the modeling features of the CIVA non destructive simulation plat-form in order to handle the configuration of a layered planar structure with a rivet and an embedded flaw nearby. Therefore, an approach based on the Volume Integral Method using the Green dyadic formalism which greatly increases computation efficiency has been developed. The first step, modeling the rivet without flaw as a hole in a multi-stratified structure, has been reached and validated in several configurations with experimental data.

  1. 75 FR 28319 - Thirteenth Meeting: EUROCAE WG-72: RTCA Special Committee 216: Aeronautical Systems Security...

    Science.gov (United States)

    2010-05-20

    .... FOR FURTHER INFORMATION CONTACT: RTCA Secretariat, 1828 L Street, NW., Suite 805, Washington, DC 20036; telephone (202) 833-9339; fax (202) 833-9434; Web site http://www.rtca.org . SUPPLEMENTARY INFORMATION...:15 to 11:30: Discuss collaboration and associated topics with other organisations (Arinc, DSWG,...

  2. 77 FR 33254 - Expediting Transition of Government Performed and Sponsored Aeronautics Research and Development

    Science.gov (United States)

    2012-06-05

    ... goals, priorities, and outcomes, with an emphasis on understanding their utility in aiding investment....'' All submissions must be in English and must include your name and return or email address, if... personally identifiable information (such as social security numbers), or classified or copyrighted...

  3. Experimental Study of the Induced Residual Stresses During the Manufacturing Process of an Aeronautic Composite Material

    Directory of Open Access Journals (Sweden)

    Hussam Kassem

    2010-09-01

    Full Text Available A methodology is proposed for predicting the formation and the development of the manufacturing residual stresses, this approach is based on the study of the evolution of the resin yield stress. In order to evaluate our method, a comparison has been made between the yield time (corresponding to the formation of a yield stress and the gel time. A self-consistent model is used to determine the cure-dependent chemical shrinkage coefficient of the composite material. This model allows considering for the composite material behavior an anisotropic chemical shrinkage, which is not represented by a classical linear model. An experimental approach based on the peel-ply method is used to determine the distribution of the residual stresses through the thickness.

  4. 78 FR 20167 - 33rd Meeting: RTCA Special Committee 206, Aeronautical Information and Meteorological Data Link...

    Science.gov (United States)

    2013-04-03

    ... be held at NCAR, 3080 Center Green Drive, Boulder, CO 80301. FOR FURTHER INFORMATION CONTACT: The... necessary daily EDR Turbulence Standards Project Briefing from FAA SE2020 Team SG6 WG1 Architecture and MASPS presentations SG3 AIS and MET Services Delivery Architecture Recommendations Document Review...

  5. Improvement of the military academy education system for aeronautics students using the flying laboratory

    Directory of Open Access Journals (Sweden)

    Slobodan N. Stupar

    2013-02-01

    Full Text Available Normal 0 false false false MicrosoftInternetExplorer4 This paper describes a proposal to improve the educational process of students of the Military Academy to support the maintenance process of the Serbian Army aircraft based on the introduction of objects in flight test aircraft. It is particularly emphasized the importance of establishing airline laboratories with basic characteristics of the test-measuring equipment that is necessary to integrate the aircraft to perform a practical test of an aircraft in flight. The formation of aircraft laboratories would form a very strong didactic tool, which provides for optimal synthesis of theory and practice. This concept of improving the educational process would be substantially affected the awareness of the necessity of working together and put together all the research capacity of scientific institutions in the Ministry of Defence of the Republic of Serbia.

  6. Information requirements of the National Aeronautics and Space Administration's safety, environmental health, and occupational medicine programs

    Science.gov (United States)

    Whyte, A. A.

    1978-01-01

    A survey of the internal and external reporting and recordkeeping procedures of these programs was conducted and the major problems associated with them are outlined. The impact of probable future requirements on existing information systems is evaluated. This report also presents the benefits of combining the safety and health information systems into one computerized system and recommendations for the development and scope of that system.

  7. Guidelines for health surveillance in the NASA (National Aeronautics and Space Administration) workplace

    Science.gov (United States)

    1984-01-01

    The adequacy of biomedical data sheets used by the NASA medical staff for NASA employees and contractors was assessed. Procedures for developing medical histories, conducting medical examinations, and collecting toxicity data were reviewed. Recommendations for employee health maintenance and early detection of work-related abnormalities are given.

  8. National Aeronautics and Space Administration Biological and Physical Research Enterprise Strategy

    Science.gov (United States)

    2003-01-01

    As the 21st century begins, NASA's new Vision and Mission focuses the Agency's Enterprises toward exploration and discovery.The Biological and Physical Research Enterprise has a unique and enabling role in support of the Agency's Vision and Mission. Our strategic research seeks innovations and solutions to enable the extension of life into deep space safely and productively. Our fundamental research, as well as our research partnerships with industry and other agencies, allow new knowledge and tech- nologies to bring improvements to life on Earth. Our interdisciplinary research in the unique laboratory of microgravity addresses opportunities and challenges on our home planet as well as in space environments. The Enterprise maintains a key role in encouraging and engaging the next generation of explorers from primary school through the grad- uate level via our direct student participation in space research.The Biological and Physical Research Enterprise encompasses three themes. The biological sciences research theme investigates ways to support a safe human presence in space. This theme addresses the definition and control of physiological and psychological risks from the space environment, including radiation,reduced gravity, and isolation. The biological sciences research theme is also responsible for the develop- ment of human support systems technology as well as fundamental biological research spanning topics from genomics to ecologies. The physical sciences research theme supports research that takes advantage of the space environment to expand our understanding of the fundamental laws of nature. This theme also supports applied physical sciences research to improve safety and performance of humans in space. The research partnerships and flight support theme establishes policies and allocates space resources to encourage and develop entrepreneurial partners access to space research.Working together across research disciplines, the Biological and Physical Research Enterprise is performing vital research and technology development to extend the reach of human space flight.

  9. 76 FR 72240 - Twenty-Seventh Meeting: RTCA Special Committee 206: Aeronautical Information and Meteorological...

    Science.gov (United States)

    2011-11-22

    .../Roadmap--SG3 Chairmen Discuss Proposed TOR Changes Final Review and Comment (FRAC): Operational Services... dates Approve proposed TOR changes Decision to release the ConUse document for FRAC process Decision...

  10. 76 FR 54526 - 26th Meeting: RTCA Special Committee 206: Aeronautical Information and Meteorological Data Link

    Science.gov (United States)

    2011-09-01

    ... Deliverables in TOR and potential changes. Discuss the certification and liability issues surrounding the use... Dates. Discuss Status of Deliverables in TOR and potential changes. Decision to release DO-267A...

  11. 77 FR 3030 - Twenty-Eighth Meeting: RTCA Special Committee 206: Aeronautical Information and Meteorological...

    Science.gov (United States)

    2012-01-20

    ... proposed TOR changes ConUse Review February 7, 2012 ConUse Review February 8, 2012 SG1, SG2, and SG3... presentation selection process Approve advisory and normal definitions Approve proposed TOR changes and new...

  12. 77 FR 20688 - 29th Meeting: RTCA Special Committee 206, Aeronautical Information and Meteorological Data Link...

    Science.gov (United States)

    2012-04-05

    ... Status. Discuss previously proposed TOR changes and DO-252 Revision. Discuss TOR changes for the June PMC... release to the PMC. Agree upon TOR changes for June PMC meeting. Other business. Adjourn--1...

  13. 75 FR 80885 - Fifteenth Meeting: EUROCAE WG-72: RTCA Special Committee 216: Aeronautical Systems Security...

    Science.gov (United States)

    2010-12-23

    ... PMC/ICC action on SC 216 TOR. Publication Progress and Update. Subgroup and Action Item Reports. Plenary review of EUROCAE Council and RTCA PMC actions on ED-202 and SC-216 TOR. Continuation of...

  14. 75 FR 16901 - Thirteenth Meeting: EUROCAE WG-72: RTCA Special Committee 216: Aeronautical Systems Security...

    Science.gov (United States)

    2010-04-02

    ...:15: Break. 11:15 to 11:30: Discuss collaboration and associated topics with other organisations... processes in relation to the planned releases for this year/early next--verify publication schedule....

  15. BROADBAND COMMUNICATIONS FOR AERONAUTICAL NETWORKS: THE ATENAA OUTER OPTICAL LINK VALIDATION

    OpenAIRE

    Fuchs, Christian; Henniger, Hennes; Epple, Bernhard; Giggenbach, Dirk; Amirfeiz, Massimiliano; Jentile, Massimo; Di Nepi, Giorgia; Mazzi, Francesco; Martini, Gianluca

    2007-01-01

    The ATENAA-Project[4] aims on the development and validation of several technologies that are able to offer broadband communication services to civil aircraft passengers. The proposed Mobile-Ad-Hoc-Network (MANET) in conjunction with broadband data links would allow high data rate services, like In-Flight-Entertainment such as Video-On- Demand or High-Speed Internet Connections. Besides that, flight-relevant information with high amounts of data, e.g. high-resolution weather maps, could be ma...

  16. 77 FR 30584 - Thirtieth Meeting: RTCA Special Committee 206, Aeronautical Information and Meteorological Data...

    Science.gov (United States)

    2012-05-23

    ... report SG3 report SAE G-10 AI ARP Briefing to SC-206 Plenary 12:30 p.m. Review ConUse Changes 12 June.... Closing Plenary SG1 report SG2 report Decision to approve the ConUse document for release to the PMC...

  17. 78 FR 51808 - 34th Meeting: RTCA Special Committee 206, Aeronautical Information and Meteorological Data Link...

    Science.gov (United States)

    2013-08-21

    ... Recommendations document to enter FRAC Action item review Future meeting plans and dates Industry Coordination: Report on SAE G-10A ARP 6467 SFO Other business Adjourn Attendance is open to the interested public...

  18. Aeronautics Education, Research, and Industry Alliance (AERIAL) Year 2 Report and Year 3 Proposal

    Science.gov (United States)

    Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, George; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; Tarry, Scott E.; Vlasek, Karisa D.

    2003-01-01

    The UNO Aviation Institute Monograph Series began in 1994 as a key component of the education outreach and information transfer missions of the Aviation Institute and the NASA Nebraska Space Grant & EPSCoR Programs. The series is an outlet for aviation materials to be indexed and disseminated through an efficient medium. Publications are welcome in all aspects of aviation. Publication formats may include, but are not limited to, conference proceedings, bibliographies, research reports, manuals, technical reports, and other documents that should be archived and indexed for future reference by the aviation and world wide communities.

  19. Aeronautical Engineering and Aerospace Engineering: A Learner-Centered Teaching Perspective in Higher Education

    Science.gov (United States)

    Gohardani, Omid; Gohardani, Amir S.; Dokter, Erin; Macario, Kyla

    2014-01-01

    Teaching in the 21st century requires a modern teaching practice coherent with the evolutions of the Information Age. Interestingly, teaching practices have stretched beyond an art form and into the realm of science. Following these scientific trails, one can argue that one of the greatest challenges educators currently face is to maintain student…

  20. Sectoral Innovation Foresight. Space and Aeronautics Sectors. Final Report. Task 2

    NARCIS (Netherlands)

    Brandes, F.; Poel, M.

    2011-01-01

    The European aerospace industry is world leader in large civil aircraft, business jets and helicopters, aero-engines and defence electronics. The sector in Europe is dominated by a small number of large firms highly concentrated in the UK, France and Germany. It is a mature market focusing on increm

  1. Evaluation of Defects in Multilayer Carbon Fibre Epoxy for Aeronautics Applications

    Directory of Open Access Journals (Sweden)

    M. Buonsanti

    2009-01-01

    Full Text Available Production of carbon fibre reinforced polymers is an elaborate process unfree from faults and problems. Problems during the manufacturing, such as plies' overlapping, can cause flaws in the resulting material, so compromising its integrity. Compared with metallic materials, carbon epoxy composites show a number of advantages. Within this framework, ultrasonic tests are effective to identify the presence of defects. In this paper a Finite Element Method approach is proposed for evaluating the most effective incidence angle of an ultrasonic probe with regard to defects' identification. According to our goal, the analysis has been carried out considering a single-line plane emitting source varying the probe angle of inclination. The proposed model looks promising to specially emphasize the presence of delaminations as well as massive breaking in a specimen of multilayer carbon fibre epoxy. Subsequently, simulation parameters and results have been exploited and compared, respectively, for a preliminary experimental in-lab campaign of measurements with encouraging results.

  2. Magnetic levitation systems for future aeronautics and space research and missions

    Science.gov (United States)

    Blankson, Isaiah M.; Mankins, John C.

    1996-01-01

    The objectives, advantages, and research needs for several applications of superconducting magnetic levitation to aerodynamics research, testing, and space-launch are discussed. Applications include very large-scale magnetic balance and suspension systems for high alpha testing, support interference-free testing of slender hypersonic propulsion/airframe integrated vehicles, and hypersonic maglev. Current practice and concepts are outlined as part of a unified effort in high magnetic fields R&D within NASA. Recent advances in the design and construction of the proposed ground-based Holloman test track (rocket sled) that uses magnetic levitation are presented. It is protected that ground speeds of up to Mach 8 to 11 at sea-level are possible with such a system. This capability may enable supersonic combustor tests as well as ramjet-to-scramjet transition simulation to be performed in clean air. Finally a novel space launch concept (Maglifter) which uses magnetic levitation and propulsion for a re-usable 'first stage' and rocket or air-breathing combined-cycle propulsion for its second stage is discussed in detail. Performance of this concept is compared with conventional advanced launch systems and a preliminary concept for a subscale system demonstration is presented.

  3. Space Research Data Management in the National Aeronautics and Space Administration

    Science.gov (United States)

    Ludwig, G. H.

    1986-01-01

    Space related scientific research has passed through a natural evolutionary process. The task of extracting the meaningful information from the raw data is highly involved and will require data processing capabilities that do not exist today. The results are presented of a three year examination of this subject, using an earlier report as a starting point. The general conclusion is that there are areas in which NASA's data management practices can be improved and recommends specific actions. These actions will enhance NASA's ability to extract more of the potential data and to capitalize on future opportunities.

  4. Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding

    Directory of Open Access Journals (Sweden)

    Ferdinando Felli

    2013-01-01

    Full Text Available The present paper describes the failure analysis of an aircraft component subjected to several episodes of in service failure, resulted in loss of the aircraft safety. Modern aircrafts are provided with mechanical systems which have the task to open not pressurized hatches during landing. The components of such systems are subject to considerable mechanical stresses in harsh environment (presence of moisture and pollutants, significant and sudden temperature variations. The system is constituted by a sliding piston, a related nipple and by a locking system consisting of 4 steel spheres which are forced into a countersink machined on the piston when the hatches is open. The whole system is activated by a preloaded spring. The machined parts, nipple and piston, are made of EN3358 steel (X3CrNiMo13-8-2, a precipitation hardening stainless steel with very low content of carbon often used in the aerospace. The samples provided by the manufacturer present different types of damage all referable to phenomena relative to the sliding of the piston inside the nipple. The present paper describes the different damage observed and the microstructure of the material, then are reported the results obtained from the characterization of the material of the samples by means of optical and electronic microscopy, carried out to define the mechanisms involved in the system seizure. In order to define the primary cause of failure and to propose solutions to be adopted, also analyzing the criticality of using this PH stainless steel for this application, the results of different tests were compared with system design and working data.

  5. 77 FR 63275 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-10-16

    .... Discussion On July 8, 2005, we issued AD 2005-15-01, Amendment 39-14191 (70 FR 42262, July 22, 2005), for all...-15-01, Amendment 39-14191 (70 FR 42262, July 22, 2005), we have received reports of small cracks... (outboard). Relevant Service Information AD 2005-15-01, Amendment 39-14191 (70 FR 42262, July 22,...

  6. 76 FR 58416 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L...

    Science.gov (United States)

    2011-09-21

    ... proposed AD. Discussion We previously issued AD 94-05-01, Amendment 39-8839 (59 FR 10275, March 4, 1994), and AD 2000-21-01, Amendment 39-11933 (65 FR 62994, October 20, 2000), which require modifications to... (59 FR 10275, March 4, 1994), and AD 2000-21-01, Amendment 39-11933 (65 FR 62994, October 20,...

  7. 76 FR 48049 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L...

    Science.gov (United States)

    2011-08-08

    ... proposed AD. Discussion On December 5, 1995, we issued AD 95-20-04 R1, Amendment 39-9454 (60 FR 63414... removes an SSD that has been addressed by AD 99-08-20, amendment 39-11128 (64 FR 18324, April 14, 1999... the NPRM for AD 95-20-04, Amendment 39-9382 (60 FR 51713, October 3, 1995) we stated that as...

  8. Risk management. National Aeronautics and Space Administration (NASA). Interim rule adopted as final with changes.

    Science.gov (United States)

    2000-11-22

    This is a final rule amending the NASA FAR Supplement (NFS) to emphasize considerations of risk management, including safety, security (including information technology security), health, export control, and damage to the environment, within the acquisition process. This final rule addresses risk management within the context of acquisition planning, selecting sources, choosing contract type, structuring award fee incentives, administering contracts, and conducting contractor surveillance.

  9. 76 FR 82106 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2011-12-30

    ... September 21, 2011 (76 FR 58416). That NPRM proposed to require repetitive inspections for cracking of the... opportunity to participate in developing this AD. We received no comments on the NPRM (76 FR 58416, September... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in...

  10. The Education of Future Aeronautical Engineers: Conceiving, Designing, Implementing and Operating

    Science.gov (United States)

    Crawley, Edward F.; Brodeur, Doris R.; Soderholm, Diane H.

    2008-01-01

    This paper will outline answers to the two central questions regarding improving engineering education: (1) What is the full set of knowledge, skills, and attitudes that engineering students should possess as they leave the university, and at what level of proficiency?; and (2) How can we do better at ensuring that students learn these skills? The…

  11. 77 FR 20522 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-04-05

    ... listed in this AD as of November 2, 1995 (60 FR 51713, October 3, 1995). ADDRESSES: For service..., Amendment 39-9454 (60 FR 63414, December 11, 1995). That AD applies to the specified products. The NPRM published in the Federal Register on August 8, 2011 (76 FR 48049). That NPRM proposed to continue to...

  12. Rheology and mechanics of polyether(ether)ketone - Polyetherimide blends for composites in aeronautics

    Science.gov (United States)

    Rosa, Mattia; Grassia, Luigi; D'Amore, Alberto; Carotenuto, Claudia; Minale, Mario

    2016-05-01

    In the present work rheological and mechanical properties of PEEK-PEI blends were investigated. Besides the pure components, blends with PEI concentration ranging from 10% to 90% in mass were considered. Oscillatory experiments in controlled atmosphere were conducted at different frequencies and temperatures. The frequency responses at different temperatures allowed using the TTS principle to reconstruct the master curves. All systems showed a shear thinning behavior and a flux index increasing with the percentage of PEI. The zero-shear viscosity was computed with the implementation of the Cross model and showed a decreasing behavior with the percentage of PEI. The relaxation time estimated from the crossover value of storage and loss moduli didn't change significantly with blend composition, suggesting the non-sensibility of the elasticity of the system. Lastly, tensile tests were executed to investigate the dependence of Young modulus in the different blends.

  13. 77 FR 50628 - Review of Foreign Ownership Policies for Common Carrier and Aeronautical Radio Licensees

    Science.gov (United States)

    2012-08-22

    ... definition of a small business applies ``unless an agency, after consultation with the Office of Advocacy of... Collins or Susan O'Connell, Policy Division, International Bureau, FCC, (202) 418-1460 or via the Internet... copying during normal business hours in the FCC Reference Information Center, Portals II, 445 12th...

  14. 76 FR 22311 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-04-21

    ..., there was a full- ] scale fatigue test performed on military airplanes based on military usage. The initial and recurring inspection intervals were based on a typical military transport usage and were... (75 FR 13695). That NPRM proposed to require repetitive eddy current inspections to detect cracks...

  15. 76 FR 25760 - Waiver of Aeronautical Land-Use Assurance Marion Municipal Airport; Marion, IN

    Science.gov (United States)

    2011-05-05

    ... minutes 13 seconds West 2,618.30 feet from the southeast corner of said section, said southeast corner... feet along the south line of said quarter section to the west boundary of S.R.9; thence continuing South 89 degrees 19 minute 47 seconds West 71.12 feet along said south line; thence North 0 degrees...

  16. The reduction of the National Aeronautics and Space Administration plates at the New Mexico University

    Science.gov (United States)

    Haas, W. H.

    1971-01-01

    A method of reducing GEOS satellite plates is described. The catalog positions of stars, whose images were measured, are updated to the time of the photographic observation. The plate constants are used to compute the positions of the seven (or fewer) flashing light images which were measured. There are corrected for refraction, parallax, and radial and decentering lens distortions. With sidereally tracking cameras, the exterior orientation is further corrected to the time of the particular flash, and the change of refraction with time is allowed for. First and second differences and standard deviations and covariances for the flashing light images are developed as a measure of accuracy.

  17. NASA and the United States educational system - Outreach programs in aeronautics, space science, and technology

    Science.gov (United States)

    Owens, Frank C.

    1990-01-01

    The role of NASA in developing a well-educated American work force is addressed. NASA educational programs aimed at precollege students are examined, including the NASA Spacemobile, Urban Community Enrichment Program, and Summer High School Apprenticeship Program. NASA workshops and programs aimed at helping teachers develop classroom curriculum materials are described. Programs aimed at college and graduate-level students are considered along with coordination efforts with other federal agencies and with corporations.

  18. Unlimited Horizons: Design and Development of the U-2. [NASA Aeronautics Book Series

    Science.gov (United States)

    Merlin, Peter W.

    2015-01-01

    This book describes the creation, history, design, and research value of the U-2 program. It also describes the involvement of NACA, as a cover story, and the later use by NASA of these aircraft as environmental research platforms.

  19. 78 FR 41314 - Review of Foreign Ownership Policies for Common Carrier and Aeronautical Radio Licensees

    Science.gov (United States)

    2013-07-10

    ... formed or acquired subsequently, provided that foreign ownership of the licensee and its subsidiaries and... received a foreign ownership ruling, any ``subsidiary'' or ``affiliate'' of the licensee, as so defined... the foreign ownership of the licensee and its subsidiary or affiliate complies with the terms...

  20. Validation and evaluation of the advanced aeronautical CFD system SAUNA: A method developer's view

    Science.gov (United States)

    Shaw, J. A.; Peace, A. J.; Georgala, J. M.; Childs, P. N.

    1993-09-01

    This paper is concerned with a detailed validation and evaluation of the SAUNA CFD system for complex aircraft configurations. The methodology of the complete system is described in brief, including its unique use of differing grid generation strategies (structured, unstructured or both) depending on the geometric complexity of the configuration. A wide range of configurations and flow conditions are chosen in the validation and evaluation exercise to demonstrate the scope of SAUNA. A detailed description of the results from the method is preceded by a discussion on the philosophy behind the strategy followed in the exercise, in terms of equality assessment and the differing roles of the code developer and the code user. It is considered that SAUNA has grown into a highly usable tool for the aircraft designer, in combining flexibility and accuracy in an efficient manner.

  1. Terminal Procedures Publication/Airport Diagrams - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The U.S. Terminal Procedure Publications (TPPs) is a 26 volume set of printed paper books containing Instrument Approach Procedure charts (IAP), Departure Procedure...

  2. Design and validation of a structural health monitoring system for aeronautical structures.

    OpenAIRE

    Tibaduiza Burgos, Diego Alexander

    2013-01-01

    Structural Health Monitoring (SHM) is an area where the main objective is the verification of the state or the health of the structures in order to ensure proper performance and maintenance cost savings using a sensor network attached to the structure, continuous monitoring and algorithms. Different benefits are derived from the implementation of SHM, some of them are: knowledge about the behavior of the structure under different loads and different environmental changes, knowledge of the cur...

  3. Autonomic and Apoptotic, Aeronautical and Aerospace Systems, and Controlling Scientific Data Generated Therefrom

    Science.gov (United States)

    Sterritt, Roy (Inventor); Hinchey, Michael G. (Inventor)

    2015-01-01

    A self-managing system that uses autonomy and autonomicity is provided with the self-* property of autopoiesis (self-creation). In the event of an agent in the system self-destructing, autopoiesis auto-generates a replacement. A self-esteem reward scheme is also provided and can be used for autonomic agents, based on their performance and trust. Art agent with greater self-esteem may clone at a greater rate compared to the rate of an agent with lower self-esteem. A self-managing system is provided for a high volume of distributed autonomic/self-managing mobile agents, and autonomic adhesion is used to attract similar agents together or to repel dissimilar agents from an event horizon. An apoptotic system is also provided that accords an "expiry date" to data and digital objects, for example, that are available on the internet, which finds usefulness not only in general but also for controlling the loaning and use of space scientific data.

  4. Quantitative impact characterization of aeronautical CFRP materials with non-destructive testing methods

    Energy Technology Data Exchange (ETDEWEB)

    Kiefel, Denis, E-mail: Denis.Kiefel@airbus.com, E-mail: Rainer.Stoessel@airbus.com; Stoessel, Rainer, E-mail: Denis.Kiefel@airbus.com, E-mail: Rainer.Stoessel@airbus.com [Airbus Group Innovations, Munich (Germany); Grosse, Christian, E-mail: Grosse@tum.de [Technical University Munich (Germany)

    2015-03-31

    In recent years, an increasing number of safety-relevant structures are designed and manufactured from carbon fiber reinforced polymers (CFRP) in order to reduce weight of airplanes by taking the advantage of their specific strength into account. Non-destructive testing (NDT) methods for quantitative defect analysis of damages are liquid- or air-coupled ultrasonic testing (UT), phased array ultrasonic techniques, and active thermography (IR). The advantage of these testing methods is the applicability on large areas. However, their quantitative information is often limited on impact localization and size. In addition to these techniques, Airbus Group Innovations operates a micro x-ray computed tomography (μ-XCT) system, which was developed for CFRP characterization. It is an open system which allows different kinds of acquisition, reconstruction, and data evaluation. One main advantage of this μ-XCT system is its high resolution with 3-dimensional analysis and visualization opportunities, which enables to gain important quantitative information for composite part design and stress analysis. Within this study, different NDT methods will be compared at CFRP samples with specified artificial impact damages. The results can be used to select the most suitable NDT-method for specific application cases. Furthermore, novel evaluation and visualization methods for impact analyzes are developed and will be presented.

  5. Finishing aeronautical planetary herringbone gear wheels in container vibrating smoothing machine

    Directory of Open Access Journals (Sweden)

    Jacek MICHALSKI

    2015-12-01

    Full Text Available The paper presents the technological process of abrasive-chemical machining wheel bearing surface of the cylindrical herringbone gears planetary gear in vibrating container smoothing machine according to Isotropic Finishing ISF® technology of the REM Chemicals Inc. company. Gear wheels are made of stainless Pyrowear 53 and subjected to carburizing, hardening, cold working and low tempering. The change in value of deviation indicators for the kinematic accuracy, smoothness and geometric structure of the machined surfaces of the gear teeth after smoothing compared with the contoured grinding were analyzed. The findings are different a characteristic performance on the surface of the tooth side along the outline, especially with a higher value at the head of the tooths. This creates a need for appropriate modification of the lateral surface of the teeth in the process of contoured grinding. The results of the mechanical strength of the samples gear wheel after the smoothing process and evaluating the hydrogen embrittlement are presented.

  6. 78 FR 1848 - Plutonium-238 Production for Radioisotope Power Systems for National Aeronautics and Space...

    Science.gov (United States)

    2013-01-09

    ... foreseeable future in the NI PEIS (DOE/EIS-0310), which was issued on December 15, 2000 (65 FR 78484). The NI... production capabilities. The NI PEIS ROD was published on January 26, 2001 (66 FR 7877). In the ROD, DOE had... determined that no additional NEPA documentation was necessary and amended its ROD (69 FR 50180, August...

  7. 76 FR 28626 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-05-18

    ..., 2010 (75 FR 262). That NPRM proposed to require repetitive inspections for any damage of the lower..., which lists only work-hours and appears to have ignored the material and loss of earnings due to...,000 per airplane, per inspection cycle. We partially agree with the commenter's requests to change...

  8. L-Band Digital Aeronautical Communications System Engineering - Concepts of Use, Systems Performance, Requirements, and Architectures

    Science.gov (United States)

    Zelkin, Natalie; Henriksen, Stephen

    2010-01-01

    This NASA Contractor Report summarizes and documents the work performed to develop concepts of use (ConUse) and high-level system requirements and architecture for the proposed L-band (960 to 1164 MHz) terrestrial en route communications system. This work was completed as a follow-on to the technology assessment conducted by NASA Glenn Research Center and ITT for the Future Communications Study (FCS). ITT assessed air-to-ground (A/G) communications concepts of use and operations presented in relevant NAS-level, international, and NAS-system-level documents to derive the appropriate ConUse relevant to potential A/G communications applications and services for domestic continental airspace. ITT also leveraged prior concepts of use developed during the earlier phases of the FCS. A middle-out functional architecture was adopted by merging the functional system requirements identified in the bottom-up assessment of existing requirements with those derived as a result of the top-down analysis of ConUse and higher level functional requirements. Initial end-to-end system performance requirements were derived to define system capabilities based on the functional requirements and on NAS-SR-1000 and the Operational Performance Assessment conducted as part of the COCR. A high-level notional architecture of the L-DACS supporting A/G communication was derived from the functional architecture and requirements.

  9. L-Band Digital Aeronautical Communications System Engineering - Initial Safety and Security Risk Assessment and Mitigation

    Science.gov (United States)

    Zelkin, Natalie; Henriksen, Stephen

    2011-01-01

    This document is being provided as part of ITT's NASA Glenn Research Center Aerospace Communication Systems Technical Support (ACSTS) contract NNC05CA85C, Task 7: "New ATM Requirements--Future Communications, C-Band and L-Band Communications Standard Development." ITT has completed a safety hazard analysis providing a preliminary safety assessment for the proposed L-band (960 to 1164 MHz) terrestrial en route communications system. The assessment was performed following the guidelines outlined in the Federal Aviation Administration Safety Risk Management Guidance for System Acquisitions document. The safety analysis did not identify any hazards with an unacceptable risk, though a number of hazards with a medium risk were documented. This effort represents a preliminary safety hazard analysis and notes the triggers for risk reassessment. A detailed safety hazards analysis is recommended as a follow-on activity to assess particular components of the L-band communication system after the technology is chosen and system rollout timing is determined. The security risk analysis resulted in identifying main security threats to the proposed system as well as noting additional threats recommended for a future security analysis conducted at a later stage in the system development process. The document discusses various security controls, including those suggested in the COCR Version 2.0.

  10. National Aeronautics and Space Administration Manned Spacecraft Center data base requirements study

    Science.gov (United States)

    1971-01-01

    A study was conducted to evaluate the types of data that the Manned Spacecraft Center (MSC) should automate in order to make available essential management and technical information to support MSC's various functions and missions. In addition, the software and hardware capabilities to best handle the storage and retrieval of this data were analyzed. Based on the results of this study, recommendations are presented for a unified data base that provides a cost effective solution to MSC's data automation requirements. The recommendations are projected through a time frame that includes the earth orbit space station.

  11. Color/magnitude calibration for National Aeronautics and Space Administration (NASA) standard Fixed-Head Star Trackers (FHST)

    Science.gov (United States)

    Landis, J.; Leid, Terry; Garber, A.; Lee, M.

    1994-01-01

    This paper characterizes and analyzes the spectral response of Ball Aerospace fixed-head star trackers, (FHST's) currently in use on some three-axis stabilized spacecraft. The FHST output is a function of the frequency and intensity of the incident light and the position of the star image in the field of view. The FHST's on board the Extreme Ultraviolet Explorer (EUVE) have had occasional problems identifying stars with a high B-V value. These problems are characterized by inaccurate intensity counts observed by the tracker. The inaccuracies are due to errors in the observed star magnitude values. These errors are unique to each individual FHST. For this reason, data were also collected and analyzed from the Upper Atmosphere Research Satellite (UARS). As a consequence of this work, the Goddard Space Flight Center (GSFC) Flight Dynamics Division (FDD) hopes to improve the attitude accuracy on these missions and to adopt better star selection procedures for catalogs.

  12. 76 FR 74844 - Public Notice for Waiver of Aeronautical Land-Use Assurance at Auburn-Lewiston Municipal Airport...

    Science.gov (United States)

    2011-12-01

    ... Investment and Reform Act for the 21st Century (AIR 21) requires the FAA to provide an opportunity for public... northwesterly line of said McLeod 435.53' to a 5 rebar with cap stamped ``NCS, INC PLS 1314'' set in the... and land N/F of City of Auburn and City of Lewiston (Airport Property) 200.49' to a 5 rebar with...

  13. 77 FR 2603 - Public Notice for Waiver of Aeronautical Land-Use Assurance; Willow Run Airport; Detroit, MI

    Science.gov (United States)

    2012-01-18

    ... delivered or mailed to: Irene R. Porter, Program Manager, Detroit Airports District Office, 11677 South Wayne Road Suite 107, Romulus, MI 48174. ] FOR FURTHER INFORMATION CONTACT: Irene R. Porter, Program... roadway, along the arc of a curve, concave to the Northeast, having a radius 334.72 feet, a central...

  14. 75 FR 16903 - Public Notice for Waiver of Aeronautical Land-Use Assurance Dayton-Wright Brothers Airport...

    Science.gov (United States)

    2010-04-02

    ...: Written comments on the Sponsor's request must be delivered or mailed to: Irene R. Porter, Program Manager... INFORMATION CONTACT: Irene R. Porter, Program Manager, Federal Aviation Administration, Great Lakes Region... central angle of 04 10'55'', and a chord bearing N 86 56'32'' E, a chord distance of 424.67 feet, for...

  15. Neurospora experiment P-1037. Quarterly progress report to the National Aeronautics and Space Administration, October 1--December 15, 1966

    Energy Technology Data Exchange (ETDEWEB)

    1967-12-01

    The main values of the 302 gantry exercise were to check the preparation of the Neurospora experiment and the spacecraft loading procedure under timed conditions and to provide final assurance that necessary operations can be completed with appropriate inspection in the allotted time. Because of the brief time interval between the 302 Gantry Exercise and the scheduled Biosatellite A flight, no attempt was made to assay for forward-mutation frequecies; however, biocompatibility tests were performed on the 302 hardware by plating conidia from a number of the modules in the usual fashion to assay survival. The average heteokaryotic conidial survival was 82.6%, which is sufficiently high for use of the conidia in a forward-mutation experiment. Calibration of thermoluminescent dosimeters was carried out using a /sup 85/Sr ..gamma.. source.

  16. Effects of Duct Cross Section Camber and Thickness on the Performance of Ducted Propulsion Systems for Aeronautical Applications

    Directory of Open Access Journals (Sweden)

    Rodolfo Bontempo

    2016-01-01

    Full Text Available The axisymmetric flow field around a ducted rotor is thoroughly analysed by means of a nonlinear and semi-analytical model which is able to deal with some crucial aspects of shrouded systems like the interaction between the rotor and the duct, and the slipstream contraction and rotation. Not disregarding the more advanced CFD based methods, the proposed procedure is characterised by a very low computational cost that makes it very appealing as analysis tool in the preliminary steps of a design procedure of hierarchical type. The work focuses on the analysis of the effects of the camber and thickness of the duct cross section onto the performance of the device. It has been found that an augmentation of both camber and thickness of the duct leads to an increase of the propulsive ideal efficiency.

  17. Effects of Duct Cross Section Camber and Thickness on the Performance of Ducted Propulsion Systems for Aeronautical Applications

    OpenAIRE

    Rodolfo Bontempo; Marcello Manna

    2016-01-01

    The axisymmetric flow field around a ducted rotor is thoroughly analysed by means of a nonlinear and semi-analytical model which is able to deal with some crucial aspects of shrouded systems like the interaction between the rotor and the duct, and the slipstream contraction and rotation. Not disregarding the more advanced CFD based methods, the proposed procedure is characterised by a very low computational cost that makes it very appealing as analysis tool in the preliminary steps of a desig...

  18. 77 FR 7231 - Public Notice for Release of Aeronautical Property at New Castle Airport (ILG), New Castle, DE

    Science.gov (United States)

    2012-02-10

    ... the development of an approximate thirty-eight (38) acre parcel of airport property on the... development, 0.610 +/- acres of Old Churchman's Road must be vacated by the Delaware Department of... sponsorship and operational control of the airport. There are no known adverse impacts to the operation of...

  19. Method for creating an aeronautic sound shield having gas distributors arranged on the engines, wings, and nose of an aircraft

    Science.gov (United States)

    Corda, Stephen (Inventor); Smith, Mark Stephen (Inventor); Myre, David Daniel (Inventor)

    2008-01-01

    The present invention blocks and/or attenuates the upstream travel of acoustic disturbances or sound waves from a flight vehicle or components of a flight vehicle traveling at subsonic speed using a local injection of a high molecular weight gas. Additional benefit may also be obtained by lowering the temperature of the gas. Preferably, the invention has a means of distributing the high molecular weight gas from the nose, wing, component, or other structure of the flight vehicle into the upstream or surrounding air flow. Two techniques for distribution are direct gas injection and sublimation of the high molecular weight solid material from the vehicle surface. The high molecular weight and low temperature of the gas significantly decreases the local speed of sound such that a localized region of supersonic flow and possibly shock waves are formed, preventing the upstream travel of sound waves from the flight vehicle.

  20. Wright Brothers Lectureship in Aeronautics: Experience with HiMAT remotely piloted research vehicle - An alternate flight test approach

    Science.gov (United States)

    Deets, D. A.; Brown, L. E.

    1986-01-01

    The highly maneuverable aircraft technology (HiMAT) program explored the various and complex interactions of advanced technologies, such as aeroelastic tailoring, close-coupled canard, and relaxed static stability. A 0.44-subscale remotely piloted research vehicle (RPRV) of a hypothetical fighter airplane was designed and flight-tested to determine the effects of these interactions and to define the design techniques appropriate for advanced fighter technologies. Flexibility and high maneuverability were provided by flight control laws implemented in ground-based computers and telemetered to the vehicle control system during flight tests. The high quality of the flight-measured data and their close correlation with the analytical design modeling proved that the RPRV is a viable and cost-effective tool for developing aerodynamic, structure, and control law requirements for highly maneuverable fighter airplanes of the future.

  1. DVB-S2/DVB-RCS satellite system performance assessment for IFE and ATN aeronautical communications

    OpenAIRE

    Tao, Na; Bousquet, Michel; Pirovano, Alain; Radzik, José

    2006-01-01

    International audience Two concurrent satellite systems are presently proposed for in-flight entertainment (IFE) communications, thus demonstrating the capability of satellites to provide multimedia access to users on board airplanes. At the same time, an increasing interest for the use of satellite communications for air traffic control has been motivated by the increasing load of traditional radio links, mainly in the VHF band. However, the development of a dedicated satellite system for...

  2. 14 CFR 61.309 - What aeronautical knowledge must I have to apply for a sport pilot certificate?

    Science.gov (United States)

    2010-01-01

    .... (f) Safe and efficient operation of aircraft, including collision avoidance, and recognition and... and risk management. (l) Preflight actions that include— (1) How to get information on runway...

  3. 77 FR 49479 - Public Notice for Waiver Of Aeronautical Land-Use Assurance; Springfield-Beckley Municipal...

    Science.gov (United States)

    2012-08-16

    ... the realignment and right-of-way needs of State Route 794. Approval does not constitute a commitment... Revised Code Chapter 4733-37, and is true and correct to the best of my knowledge. Parcel 1-WDV-3... Chapter 4733-37, and is true and correct to the best of my knowledge. Issued in Romulus, Michigan,...

  4. The National Aeronautics and Space Administration-U.S. Public Health Service Health Evaluation and Enhancement Program - Summary of results.

    Science.gov (United States)

    Durbeck, D. C.; Heinzelmann, F.; Schacter, J.; Haskell, W. L.; Payne, G. H.; Moxley, R. T., III; Nemiroff, M.; Limoncelli, D. D.; Arnoldi, L. B.; Fox, S. M., III

    1972-01-01

    An exercise program was initiated in a federal agency to assess the feasibility of such a program, and to identify the factors that influenced joining, adherence to, and effectiveness of the program. The program was utilized by 237 of the 998 eligible federal employees; mean attendance rate was 1.3 days/week. Those who volunteered perceived a need for increased physical activity, believed they had sufficient time to participate and derived subjective as well as objective benefits. Significant improvements were found in heart rate response to the standard exercise test, body weight, skinfold measurements and triglyceride levels.

  5. Fatigue FEM analysis in the case of brazed aluminium alloy 3L59 used in aeronautical industry

    Science.gov (United States)

    Dimitrescu, A.; Amza, Gh; Niţoi, D. F.; Amza, C. Gh; Apostolescu, Z.

    2016-08-01

    The use, on a larger scale, of brazed aluminum alloys in the aerospace industry led to the need for a detailed study of the assemblies behavior. These are built from 6061 aluminum aloy (3L59) brazed with aluminum aloy A103. Therefore, a finit element simulation (FEM) of durability is necessary, that consists in the observation of gradual deterioration until failure. These studies are required and are previous to the stage of the producing the assembly and test it by traditional methods.

  6. [Importance, especially in aeronautics, of color perception tests under dynamic conditions. Study of a suitable experimental apparatus].

    Science.gov (United States)

    Linzi, S; Modugno, G C; Bollini, M

    1977-12-15

    Following a review of the most recent opinion on the physiology of colour vision, a device for examining it in dynamic, i.e. real-life conditions is described. The apparatus consist of two projectors which flash two absolutely identical pictures on to the screen, one of them is upside down. It appears at fixed but adjustable intervals so that the exposure time of the intelligible image can be varied. Subjects were also controlled with Ishihara charts and Nägel anomaloscope. The results are compared and point to the higher sensitivity of the dynamic test to even slight degrees of dyschromatopsia.

  7. Modeling, fabrication and plasma actuator coupling of flexible pressure sensors for flow separation detection and control in aeronautical applications

    Science.gov (United States)

    Francioso, L.; De Pascali, C.; Pescini, E.; De Giorgi, M. G.; Siciliano, P.

    2016-06-01

    Preventing the flow separation could enhance the performance of propulsion systems and future civil aircraft. To this end, a fast detection of boundary layer separation is mandatory for a sustainable and successful application of active flow control devices, such as plasma actuators. The present work reports on the design, fabrication and functional tests of low-cost capacitive pressure sensors coupled with dielectric barrier discharge (DBD) plasma actuators to detect and then control flow separation. Finite element method (FEM) simulations were used to obtain information on the deflection and the stress distribution in different-shaped floating membranes. The sensor sensitivity as a function of the pressure load was also calculated by experimental tests. The results of the calibration of different capacitive pressure sensors are reported in this work, together with functional tests in a wind tunnel equipped with a curved wall plate on which a DBD plasma actuator was mounted to control the flow separation. The flow behavior was experimentally investigated by particle image velocimetry (PIV) measurements. Statistical and spectral analysis, applied to the output signals of the pressure sensor placed downstream of the profile leading edge, demonstrated that the sensor is able to discriminate different ionic wind velocity and turbulence conditions. The sensor sensitivity in the 0-100 Pa range was experimentally measured and it ranged between 0.0030 and 0.0046 pF Pa-1 for the best devices.

  8. 77 FR 67862 - Public Notice for Waiver of Aeronautical Land-Use Assurance; J. Douglas Bake Memorial Airport...

    Science.gov (United States)

    2012-11-14

    ... Bake Memorial Airport (OCQ) Oconto, WI AGENCY: Federal Aviation Administration, DOT. ACTION: Notice of.... Douglas Bake Memorial Airport, Oconto, WI. Parcel No. 18 is located outside of the airport fence along the... be released at the J. Douglas Bake Memorial Airport in Oconto, Wisconsin: Part of Government Lot...

  9. 76 FR 82035 - Public Notice for Waiver of Aeronautical Land-Use Assurance; Ohio State University Airport...

    Science.gov (United States)

    2011-12-29

    ... North, Range 19 West, United States Military District, being part of the 49.198 acre tract conveyed to... 49' 22'' West for the centerline of Dublin-Granville Road, as established by a GPS network of...

  10. 77 FR 61047 - Public Notice for Waiver of Aeronautical Land-Use Assurance: Bolton Field Airport; Columbus, OH

    Science.gov (United States)

    2012-10-05

    ... Columbus, lying in Virginia Military Survey Number 1462, being 4.473 acres out of that original 108.301... County Engineer's Monuments FCGS 5146 and FCGS 4448 as determined by a GPS network of field...

  11. 76 FR 25402 - Public Notice for Waiver of Aeronautical Land-Use Assurance; Richard Downing Airport, Coshocton, OH

    Science.gov (United States)

    2011-05-04

    ... Ohio, and being further described as follows; Note: North based on GPS observations. All steel pins... Township 6 North, Range 6 West, United States Military Lands, in Township of Keene, in the County...

  12. Astronautics and aeronautics, 1973: Chronology of science, technology and policy. [including artificial satellites, space probes, and manned space flights

    Science.gov (United States)

    1975-01-01

    A brief chronological account is presented of key events of the year in aerospace sciences. Dates, actions, hardware, persons, scientific discoveries are recorded along with plans, decisions, achievements and preliminary evaluations of results. Samples of public reaction and social impact are included. Sources are identified and an index is provided to aid in tracing related events through the year. The index also serves as a glossary of acronyms and abbreviations.

  13. Decision making model for Foreign Object Debris/Damage (FOD) elimination in aeronautics using quantitative modeling approach

    Science.gov (United States)

    Lafon, Jose J.

    (FOD) Foreign Object Debris/Damage has been a costly issue for the commercial and military aircraft manufacturers at their production lines every day. FOD can put pilots, passengers and other crews' lives into high-risk. FOD refers to any type of foreign object, particle, debris or agent in the manufacturing environment, which could contaminate/damage the product or otherwise undermine quality standards. Nowadays, FOD is currently addressed with prevention programs, elimination techniques, and designation of FOD areas, controlled access to FOD areas, restrictions of personal items entering designated areas, tool accountability, etc. All of the efforts mentioned before, have not shown a significant reduction in FOD occurrence in the manufacturing processes. This research presents a Decision Making Model approach based on a logistic regression predictive model that was previously made by other researchers. With a general idea of the FOD expected, elimination plans can be put in place and start eradicating the problem minimizing the cost and time spend on the prediction, detection and/or removal of FOD.

  14. Prediction of Foreign Object Debris/Damage type based in human factors for aeronautics using logistic regression model

    Science.gov (United States)

    Romo, David Ricardo

    Foreign Object Debris/Damage (FOD) has been an issue for military and commercial aircraft manufacturers since the early ages of aviation and aerospace. Currently, aerospace is growing rapidly and the chances of FOD presence are growing as well. One of the principal causes in manufacturing is the human error. The cost associated with human error in commercial and military aircrafts is approximately accountable for 4 billion dollars per year. This problem is currently addressed with prevention programs, elimination techniques, and designation of FOD areas, controlled access, restrictions of personal items entering designated areas, tool accountability, and the use of technology such as Radio Frequency Identification (RFID) tags, etc. All of the efforts mentioned before, have not show a significant occurrence reduction in terms of manufacturing processes. On the contrary, a repetitive path of occurrence is present, and the cost associated has not declined in a significant manner. In order to address the problem, this thesis proposes a new approach using statistical analysis. The effort of this thesis is to create a predictive model using historical categorical data from an aircraft manufacturer only focusing in human error causes. The use of contingency tables, natural logarithm of the odds and probability transformation is used in order to provide the predicted probabilities of each aircraft. A case of study is shown in this thesis in order to show the applied methodology. As a result, this approach is able to predict the possible outcomes of FOD by the workstation/area needed, and monthly predictions per workstation. This thesis is intended to be the starting point of statistical data analysis regarding FOD in human factors. The purpose of this thesis is to identify the areas where human error is the primary cause of FOD occurrence in order to design and implement accurate solutions. The advantages of the proposed methodology can go from the reduction of cost production, quality issues, repair cost, and assembly process time. Finally, a more reliable process is achieved, and the proposed methodology may be used in other aircrafts.

  15. Dynamic Strain Measurements on Automotive and Aeronautic Composite Components by Means of Embedded Fiber Bragg Grating Sensors

    OpenAIRE

    Alfredo Lamberti; Gabriele Chiesura; Geert Luyckx; Joris Degrieck; Markus Kaufmann; Steve Vanlanduit

    2015-01-01

    The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be embedded in the composite materials and serve as in situ sensors. In this article, embedded optical fiber Bragg grating (FBG) sensors are used to analyze the vibration characteristics of two real-life composite components. The first component...

  16. Study of the localized corrosion of over-aged aeronautical 2024 aluminum alloy. Kelvin probe Force Microscopy (KFM) application

    OpenAIRE

    Radutoiu, Nicoleta; Lacroix, Loïc; Alexis, Joël; Abrudeanu, Marioara; Petit, Jacques-Alain

    2012-01-01

    The 2xxx serie aluminum alloys are characterized by good mechanical performances and low density, however they are susceptible to different forms of localized corrosion: pitting corrosion, intergranular corrosion and stress corrosion cracking. The 2024-T351 aluminum alloy is used in the aircraft industry for numerous applications such as fuselage and door skin. Corrosion damage of the material is also very detrimental for the structural integrity of the aircraft. The presence of coarse interm...

  17. Application of Kelvin probe Force Microscopy (KFM) to evidence localized corrosion of over-aged aeronautical 2024 aluminum alloy

    OpenAIRE

    Radutoiu, Nicoleta; Alexis, Joël; Lacroix, Loïc; Abrudeanu, Marioara; Petit, Jacques-Alain

    2013-01-01

    The 2xxx serie aluminum alloys are characterized by good mechanical performances and low density, however they are susceptible to different forms of localized corrosion: pitting corrosion, intergranular corrosion and stress corrosion cracking. The 2024-T351 aluminum alloy is used in the aircraft industry for numerous applications such as fuselage and door skin. Corrosion damage of the material is also very detrimental for the structural integrity of the aircraft. The presence of coarse interm...

  18. A first approach on the failure mechanisms of IGBT inverters for aeronautical applications: effect of humidity-pressure combination

    OpenAIRE

    Abbad, Hassan; Azzopardi, Stephane; Woirgard, Eric; Delétage, Jean-Yves; Rollin, P; Marchand, Karl; Lhommeau, Tony; Piton, Michel

    2010-01-01

    International audience Comparing to the most common reliability tests this work presents a new approach of accelerated testing, by combining temperature, humidity and pressure cycling with voltage stress. A design of experiments methodology has been proposed to test IGBT inverters and understand environmental factors effect. The humidity-pressure combination effect is studied for various IGBT inverter packaging materials.

  19. Summary Report for National Aeronautics Space Administration (NASA) and Centro Para Prevencao da Poluicao (C3P) 2011 International Workshop on Environment and Alternative Energy

    Science.gov (United States)

    Greene, Brian

    2011-01-01

    The C3P &. NASA International Workshop on Environment and Alternative Energy was held on November 15-18, 2011 at the European Space Agency (ESA)'s Research and Technology Centre (ESTEC) in Noordwijk, The Netherlands. The theme of the workshop was "Global Collaboration in Environmental and Alternative Energy Strategies". The workshop was held at ESTEC's conference center. More than 110 individuals from eleven countries attended the workshop. For the first time since the inception of NASA-C3P workshops, a full day was dedicated to a student session. Fifteen students from around the globe gave oral presentations along with poster displays relating to the latest technologies in environmental and alternative energy strategies. Judges from NASA, C3P and ESA awarded plaques to the top three students. In addition to the students, thirty eight U.S. and international subject matter experts presented on the following general environmental-related topics: (1) Hazardous materials management and substitution in support of space operations (2) Emerging renewable and alternative energy technologies (3) Sustainable development and redevelopment (4) Remediation technologies and strategies The workshop also included a panel discussion on the topic of the challenges of operating installations across borders. Throughout the workshop, attendees heard about the scope of environmental and energy challenges that industry and governments face. They heard about technologies for increasing energy efficiency and increasing use of renewable energy. They learned about ways companies and government agencies are using materials, processes, goods and services in a manner more respectful with the environment and in compliance with health and safety rules. The concept of partnerships and their inherent benefits was evidenced throughout the workshop. Partnering is a key aspect of sustainability because sustainable development is complicated. Through formal presentations and side discussions, attendees commented on the need for continued exploration of joint projects of mutual interest.

  20. Swamp Works: A New Approach to Develop Space Mining and Resource Extraction Technologies at the National Aeronautics Space Administration (NASA) Kennedy Space Center (KSC)

    Science.gov (United States)

    Mueller, R. P.; Sibille, L.; Leucht, K.; Smith, J. D.; Townsend, I. I.; Nick, A. J.; Schuler, J. M.

    2015-01-01

    The first steps for In Situ Resource Utilization (ISRU) on target bodies such as the Moon, Mars and Near Earth Asteroids (NEA), and even comets, involve the same sequence of steps as in the terrestrial mining of resources. First exploration including prospecting must occur, and then the resource must be acquired through excavation methods if it is of value. Subsequently a load, haul and dump sequence of events occurs, followed by processing of the resource in an ISRU plant, to produce useful commodities. While these technologies and related supporting operations are mature in terrestrial applications, they will be different in space since the environment and indigenous materials are different than on Earth. In addition, the equipment must be highly automated, since for the majority of the production cycle time, there will be no humans present to assist or intervene. This space mining equipment must withstand a harsh environment which includes vacuum, radical temperature swing cycles, highly abrasive lofted dust, electrostatic effects, van der Waals forces effects, galactic cosmic radiation, solar particle events, high thermal gradients when spanning sunlight terminators, steep slopes into craters / lava tubes and cryogenic temperatures as low as 40 K in permanently shadowed regions. In addition the equipment must be tele-operated from Earth or a local base where the crew is sheltered. If the tele-operation occurs from Earth then significant communications latency effects mandate the use of autonomous control systems in the mining equipment. While this is an extremely challenging engineering design scenario, it is also an opportunity, since the technologies developed in this endeavor could be used in the next generations of terrestrial mining equipment, in order to mine deeper, safer, more economical and with a higher degree of flexibility. New space technologies could precipitate new mining solutions here on Earth. The NASA KSC Swamp Works is an innovation environment and methodology, with associated laboratories that uses lean development methods and creativity-enhancing processes to invent and develop new solutions for space exploration. This paper will discuss the Swamp Works approach to developing space mining and resource extraction systems and the vision of space development it serves. The ultimate goal of the Swamp Works is to expand human civilization into the solar system via the use of local resources utilization. By mining and using the local resources in situ, it is conceivable that one day the logistics supply train from Earth can be eliminated and Earth independence of a space-based community will be enabled.

  1. 航空装备维修性外场评估方法及其标准化%Aeronautical Equipment Maintenance Field-assessment and Standardization

    Institute of Scientific and Technical Information of China (English)

    马涛; 杨向红

    2009-01-01

    在结合部分型号的维修性外场评估的经验基础之上,形成一套适合外场试飞的维修性评估的体系方法.并结合现行标准的特点,对外场维修性评估标准的建立提出建议.

  2. 工业4.0在航空制造业的应用%The application of industry 4.0 in aeronautical manufacturing industry

    Institute of Scientific and Technical Information of China (English)

    殷俊

    2015-01-01

    “工业4.0”作为近年来国内外制造业领域的研究热点,是以实现智能化生产为目标的第四次工业革命,其主要包括“智能工厂”和“智能生产”两个主题。本文首先阐述了了工业4.0的概念、特性,并对“工业4.0”在航空制造业的应用进行了分析,最后总结了“工业4.0”航空制造业领域应用过程中所面临的挑战。

  3. Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites †

    Science.gov (United States)

    López-Rodríguez, Patricia; Escot-Bocanegra, David; Poyatos-Martínez, David; Weinmann, Frank

    2016-01-01

    The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites. From the electromagnetic point of view, this fact forces engineers and scientists to assess how these materials may affect their radar response or their electronics in terms of electromagnetic compatibility. In order to evaluate this, electromagnetic characterization of different composite materials has become a need. Several techniques exist to perform this characterization, all of them based on the utilization of different sensors for measuring different parameters. In this paper, an implementation of the metal-backed free-space technique, based on the employment of antenna probes, is utilized for the characterization of composite materials that belong to an actual drone. Their extracted properties are compared with those given by a commercial solution, an open-ended coaxial probe (OECP). The discrepancies found between both techniques along with a further evaluation of the methodologies, including measurements with a split-cavity resonator, conclude that the implemented free-space technique provides more reliable results for this kind of composites than the OECP technique. PMID:27347966

  4. Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites.

    Science.gov (United States)

    López-Rodríguez, Patricia; Escot-Bocanegra, David; Poyatos-Martínez, David; Weinmann, Frank

    2016-01-01

    The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites. From the electromagnetic point of view, this fact forces engineers and scientists to assess how these materials may affect their radar response or their electronics in terms of electromagnetic compatibility. In order to evaluate this, electromagnetic characterization of different composite materials has become a need. Several techniques exist to perform this characterization, all of them based on the utilization of different sensors for measuring different parameters. In this paper, an implementation of the metal-backed free-space technique, based on the employment of antenna probes, is utilized for the characterization of composite materials that belong to an actual drone. Their extracted properties are compared with those given by a commercial solution, an open-ended coaxial probe (OECP). The discrepancies found between both techniques along with a further evaluation of the methodologies, including measurements with a split-cavity resonator, conclude that the implemented free-space technique provides more reliable results for this kind of composites than the OECP technique. PMID:27347966

  5. Research on the Identity Verification of INMARSAT Aeronautical Satellite Communication System%INMARSAT航空卫星通信系统中身份认证的研究

    Institute of Scientific and Technical Information of China (English)

    左倩倩; 刘颖; 姚彬; 尉玉梅

    2006-01-01

    在对INMARSAT(International Mobile Organization,国际移动卫星组织)航空卫星通信系统的通信过程分析的基础上,研究了AES(Aircraft Earth Station,机载地球站)在GES(Ground Earth Station,地面地球站)上注册的过程中存在的安全隐患.为了提高航空通信系统的安全性,论文提出了一个简洁有效的身份认证方案,并在注册过程中引入加密技术.

  6. Evaluation by an Aeronautic Dentist on the Adverse Effects of a Six-Week Period of Microgravity on the Oral Cavity

    Directory of Open Access Journals (Sweden)

    Balwant Rai

    2011-01-01

    Full Text Available Objective. HDT bed rest condition is a simulated microgravity condition in which subject lies on bed inclined −6 degree feet up. To determine the influence of a simulated microgravity (HDT bed rest on oral cavity, 10 healthy male volunteers were studied before, during, just after, and after 6 weeks of the simulated microgravity condition of −6° head-down-tilt (HDT bed rest. Materials and Methods. Facial nerve function, facial sensation, chemosensory system, salivary biomarkers were measured. Results. Lactate dehydrogenase, MIP 1 alpha, malonaldehyde, 8-hydroxydeoxyguanosine, and thiocyanate were found to increase significantly, while flow rate, sodium, potassium, calcium, phosphate, protein, amylase activity, vitamin E and C, and mouth opening were decreased in simulation environments in contradiction to normal. The threshold for monosodium glutamate (MSG and capsaicin increased during microgravity as compared to normal conditions. Moderate pain of teeth, facial oedema, mild pain, loss of sensation of pain and temperature, decreased tongue, and mandibular movement in simulation microgravity environments were observed. Conclusions. These results suggest that reversible effect of microgravity is oedema of face, change in taste, abnormal expression of face, teeth pain, and xerostomia. Further study will be required on large scale on long-term effects of microgravity on oral cavity to prevent the adverse effects.

  7. NASA University Research Centers Technical Advances in Aeronautics, Space Sciences and Technology, Earth Systems Sciences, Global Hydrology, and Education. Volumes 2 and 3

    Science.gov (United States)

    Coleman, Tommy L. (Editor); White, Bettie (Editor); Goodman, Steven (Editor); Sakimoto, P. (Editor); Randolph, Lynwood (Editor); Rickman, Doug (Editor)

    1998-01-01

    This volume chronicles the proceedings of the 1998 NASA University Research Centers Technical Conference (URC-TC '98), held on February 22-25, 1998, in Huntsville, Alabama. The University Research Centers (URCS) are multidisciplinary research units established by NASA at 11 Historically Black Colleges or Universities (HBCU's) and 3 Other Minority Universities (OMU's) to conduct research work in areas of interest to NASA. The URC Technical Conferences bring together the faculty members and students from the URC's with representatives from other universities, NASA, and the aerospace industry to discuss recent advances in their fields.

  8. Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites

    Directory of Open Access Journals (Sweden)

    Patricia López-Rodríguez

    2016-06-01

    Full Text Available The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites. From the electromagnetic point of view, this fact forces engineers and scientists to assess how these materials may affect their radar response or their electronics in terms of electromagnetic compatibility. In order to evaluate this, electromagnetic characterization of different composite materials has become a need. Several techniques exist to perform this characterization, all of them based on the utilization of different sensors for measuring different parameters. In this paper, an implementation of the metal-backed free-space technique, based on the employment of antenna probes, is utilized for the characterization of composite materials that belong to an actual drone. Their extracted properties are compared with those given by a commercial solution, an open-ended coaxial probe (OECP. The discrepancies found between both techniques along with a further evaluation of the methodologies, including measurements with a split-cavity resonator, conclude that the implemented free-space technique provides more reliable results for this kind of composites than the OECP technique.

  9. Effect of a Shot Peening Pre Treatment on the Fatigue Behaviour of Hard Chromium on Electroless Nickel Interlayer Coated AISI 4340 Aeronautical Steel

    OpenAIRE

    Marcelino P. Nascimento; Marcelo A.S. Torres; Renato C. Souza; Herman J.C. Voorwald

    2002-01-01

    Multiple layer systems of coatings are considered to have larger resistance to crack propagation in comparison to coatings with simple layer. With regard to fatigue, it is possible to improve the resistance of a component with the application of shot peening treatment, whose compressive residual stresses delay or eliminate the initiation and propagation of fatigue cracks. The aim of this study is to analyse the effects on rotating bending fatigue behaviour of hard chromium fraction three-quar...

  10. [NASA/DOD Aerospace Knowledge Diffusion Research Project. Report 2:] Technical communications in aeronautics: Results of an exploratory study. An analysis of managers' and nonmanagers' responses

    Science.gov (United States)

    Pinelli, Thomas E.; Glassman, Myron; Barclay, Rebecca O.; Oliu, Walter E.

    1989-01-01

    Data collected from an exploratory study concerned with the technical communications practices of aerospace engineers and scientists were analyzed to test the primary assumption that aerospace managers and nonmanagers have different technical communications practices. Five assumptions were established for the analysis. Aerospace managers and nonmanagers were found to have different technical communications practices for three of the five assumptions tested. Although aerospace managers and nonmanagers were found to have different technical communications practices, the evidence was neither conclusive nor compelling that the presumption of difference in practices could be attributed to the duties performed by aerospace managers and nonmanagers.

  11. [NASA/DOD Aerospace Knowledge Diffusion Research Project. Report 3:] Technical communications in aeronautics: Results of an exploratory study. An analysis of profit managers' and nonprofit managers' responses

    Science.gov (United States)

    Pinelli, Thomas E.; Glassman, Myron; Barclay, Rebecca O.; Oliu, Walter E.

    1989-01-01

    Data collected from an exploratory study concerned with the technical communications practices of aerospace engineers and scientists were analyzed to test the primary assumption that profit and nonprofit managers in the aerospace community have different technical communications practices. Five assumptions were established for the analysis. Profit and nonprofit managers in the aerospace community were found to have different technical communications practices for one of the five assumptions tested. It was, therefore, concluded that profit and nonprofit managers in the aerospace community do not have different technical communications practices.

  12. Effect of a Shot Peening Pre Treatment on the Fatigue Behaviour of Hard Chromium on Electroless Nickel Interlayer Coated AISI 4340 Aeronautical Steel

    Directory of Open Access Journals (Sweden)

    Nascimento Marcelino P.

    2002-01-01

    Full Text Available Multiple layer systems of coatings are considered to have larger resistance to crack propagation in comparison to coatings with simple layer. With regard to fatigue, it is possible to improve the resistance of a component with the application of shot peening treatment, whose compressive residual stresses delay or eliminate the initiation and propagation of fatigue cracks. The aim of this study is to analyse the effects on rotating bending fatigue behaviour of hard chromium fraction three-quarters electroless nickel multilayer system coated AISI 4340 high strength steel submitted to shot peening pre treatment. Results indicated that the interaction between the shot peening process with the multilayer system was not satisfactory, resulting in intense delamination. Fracture surface analysis by SEM was performed toward to identify the fatigue crack origin, as well as the coating-substrate delamination process.

  13. The application of industry 4.0 in aeronautical manufacturing industry%工业4.0在航空制造业的应用

    Institute of Scientific and Technical Information of China (English)

    殷俊

    2015-01-01

    “工业4.0”作为近年来国内外制造业领域的研究热点,是以实现智能化生产为目标的第四次工业革命,其主要包括“智能工厂”和“智能生产”两个主题。本文首先阐述了了工业4.0的概念、特性,并对“工业4.0”在航空制造业的应用进行了分析,最后总结了“工业4.0”航空制造业领域应用过程中所面临的挑战。

  14. Airports and Airfields, Airport attributes were obtained from the Federal Aviation Administration's (FAA) National Airspace System Resource Aeronautical Data and the Office of Airline Information (OAI) Enplanement Data. The FAA Data was published by the Aeronautical Informatio, Published in 2006, Missouri Department of Conservation.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Airports and Airfields dataset, was produced all or in part from Published Reports/Deeds information as of 2006. It is described as 'Airport attributes were...

  15. Fractografia de compósito estrutural aeronáutico submetido à caracterização de tenacidade à fratura interlaminar em modo I Fractography of aeronautical composite structures submitted to mode I interlaminar fracture toughness characterization

    Directory of Open Access Journals (Sweden)

    Geraldo Maurício Cândido

    2012-01-01

    Full Text Available Muitos componentes das modernas aeronaves estão sendo manufaturados em compósitos poliméricos. Laminados de resina epóxi modificada reforçada com fibras de carbono contínuas são empregados em estruturas primárias e secundárias para reduzir o peso e melhorar o desempenho operacional. Porém, se ocorrer uma falha circunstancial, o processo de fratura desses laminados é complexo e pode envolver mecanismos de danos interlaminares. A delaminação é a descontinuidade interlaminar que pode se propagar de forma catastrófica com a aplicação de cargas mecânicas. O ensaio de corpos de prova denominado de Double Cantilever Beam (DCB é o método mais utilizado para determinar a tenacidade à fratura em Modo I de compósitos estruturais. Neste trabalho, amostras preparadas de um laminado de tecido bidirecional, estilo plain weave, foram submetidas ao carregamento estático de delaminação em Modo I, à temperatura ambiente. A análise fractográfica das superfícies delaminadas foi realizada por microscopia eletrônica de varredura. Os resultados mostram que o processo de fratura se inicia nas bolsas de resina após um inserto de Teflon® e se propaga ao longo das regiões ricas em resina posicionadas nos interstícios de entrelaçamento das mechas da trama e da urdidura. Os principais aspectos fractográficos revelados são identificados, documentados e discutidos neste trabalho.Many components of modern aircrafts are now manufactured from polymer composites. Reinforced laminates with continuous carbon fibers and modified epoxy resin are employed in primary and secondary structures to reduce weight and improve the aircraft performance. However, if a circumstantial failure happens, the complex fracture process of the laminates may involve interlaminar damage mechanisms. The delamination is the interlaminar discontinuity which may propagate catastrophically with the application of mechanical loads. The Double Cantilever Beam (DCB is the most used method to determine the Mode I fracture toughness of structural composites. In this work samples prepared from a plain weave fabric laminate were submitted to Mode I delamination under static load at room temperature. The analysis of the delaminated surfaces was performed with scanning electron microscopy (SEM. The results show that the fracture process initiates at the resin pockets after a Teflon® insert and propagates along the resin rich areas at the crossing of weft and warp tows. The main fractographical aspects revealed are identified, reported and discussed.

  16. Design and Development of a Database System for Aeronautical Advanced Composites%航空先进复合材料数据库系统的设计开发

    Institute of Scientific and Technical Information of China (English)

    赵庆兰; 吕毅

    2008-01-01

    根据航空先进复合材料的数据特点,利用Oracle 10 g设计了合理的复合材料数据体系,建立了数据仓库.基于2层C/S与3层B/S的混合开发模式,开发了数据管理平台与用户界面.通过Java调用Fortran的DLL文件,解决了用户界面自设计计算程序的集成问题;利用PCL语言,开发了系统与MSC.PATRAN的接口.

  17. Optimisation of thermo mechanical treatments using ECAP and aging for an aluminium alloy for automotive and aeronautical applications; Thermomechanische Optimierung mittels ECAP und Waermebehandlung an einer Aluminiumlegierung der Automobil- und Luftfahrtindustrie

    Energy Technology Data Exchange (ETDEWEB)

    Hockauf, K.; Meyer, L.W. [Nordmetall Research and Consulting GmbH, Adorf (Neukirchen) (Germany); Halle, T.; Hockauf, M.; Wagner, M.F.X.; Lampke, T. [Technische Universitaet Chemnitz, Institut fuer Werkstoffwissenschaft und Werkstofftechnik, Chemnitz (Germany)

    2010-09-15

    In this work, the promising approach of a combined equal-channel angular pressing (ECAP) and aging treatment was applied to an Al-Mg-Si-(Cu) alloy. With the aim of improving the strength and preserving a moderate ductility, this method consists of a severe plastic deformation in the solid-solution heat-treated condition and a subsequent aging to peak strength. For the following aging treatment, time and temperature are balanced in order to enable precipitation hardening up to the peak strength on the one hand and microstructural recovery of the severely work hardened material on the other hand. The main focus of this work lies on the influence of the aging time and temperature on the evolution of strength and ductility of the ECAP-processed material. The underlying microstructural features, such as dislocation structures and precipitation characteristics, are evaluated by means of low-voltage scanning transmission electron microscopy. In comparison to the initial peak aged condition, an increase in strength of about 27%, combined with a uniform elongation of 6.5% and a total elongation of 20%, was achieved by two ECAP-passes and a subsequent aging to peak strength at 150 C. (Abstract Copyright [2010], Wiley Periodicals, Inc.)

  18. Study of a hybrid solar-electric oven to the curing composite materials used in aeronautics; Estudio de un horno hibrido solar-electrico para el curado de materiales compuestos utilizados en aeronautica

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez Roman, M. A.; Pineda Pinon, J.; Sanchez Sanchez, A. [CICATA - Unidad Queretaro, Santiago de Queretaro, Queretaro (Mexico)]. E-mail: mhernandezr0900@ipn.mx

    2010-11-15

    The study covers the curing of advanced composites in a hybrid solar electric oven. The furnace uses electricity from the grid power and solar energy provided by the heliostat concentrator system. The materials used in the experiments will be composite materials such as prepreg. The prepreg are fiberglass and carbon fiber. The resin used in the pre-impregnate will be epoxy resin. The work temperatures inside the furnace will be maximum 300 degrees Celsius. The obtained results will be useful to characterize the use of the solar energy and the characterize of the curing chamber. [Spanish] Se presenta el alcance para el estudio, el cual abarca el curado de materiales compuestos avanzados dentro de un horno hibrido solar electrico. El horno utilizara energia electrica suministrada por la red y energia solar suministrada por el sistema heliostato concentrador. Los materiales utilizados en los experimentos seran materiales compuestos tipo prepreg. Los prepreg seran de fibra de vidrio y de fibra de carbono. La resina utilizada en el preimpregando sera resina epoxica. Las temperaturas de trabajo dentro del horno seran como maximo de 300 grados centigrados. Los resultados obtenidos serviran para caracterizar el uso y aprovechamiento de la energia solar y la caracterizacion de la camara de curado.

  19. 基于Web的民机维修信息管理系统的设计与实现%Design and Implementation of MIS of Civil Aeronautic Maintenance Based on Web

    Institute of Scientific and Technical Information of China (English)

    于辉; 刘毅; 黄传奇

    2001-01-01

    针对传统民机维修信息管理中存在的问题,提出用计算机技术、Internet/Intranet技术开发基于Web的维修信息管理系统,着重讨论系统的构建思路和实现方法,对Web等先进技术在民机维修信息管理中的进一步应用有着很大的借鉴意义.

  20. National natural science foundation(No.50075038); aeronautical science foundation(No.500I52074)%基于随机子空间方法的模态参数识别研究

    Institute of Scientific and Technical Information of China (English)

    陈爱林; 张令弥

    2001-01-01

    Stochastic Subspace Identification (SSI) is a novel time domain identification method, which directly uses operational response data to identify the system model by linear algebraic manipulations such as QR-factorization and Singular Value Decomposition (SVD). This paper deals with SSI and its applications for structural modal identification. The NASA mini-mast model is used for simulations to illustrate how to select input parameters, and to demonstrate identification precision. A real building structure, the Heritage Court Tower (HCT) in Canada is analyzed. From the simulation and test researches, the conclusions can be made to instruct how to identify structural modal parameters using SSI method.%随机子空间识别(Stochastic Subspace Identification,以下简称SSI)方法是一种新的时域识别方法,该方法仅用自然响应数据,通过QR分解和SVD分解等一套正交投影算法识别系统模型。研究了SSI方法在模态参数识别领域的应用。采用NASA mini-mast模型,仿真分析了SSI算法控制参数选择技巧,论证了其参数识别精度。通过处理日本CFT大楼实测数据,研究了SSI方法识别真实结构模态参数的问题。应用Kalman滤波器,测量响应可以分解为模态空间响应,将信号功率谱分解成多条单自由度系统功率谱。

  1. Assessment for Decision-Makers Scientiic Assessment of Ozone Depletion: 2014 World Meteorological Organization United Nations Environment Programme National Oceanic and Atmospheric Administration National Aeronautics and Space Administration European Commission

    OpenAIRE

    Huret, Nathalie; Legras, Bernard

    2014-01-01

    Actions taken under the Montreal Protocol have led to decreases in the atmospheric abundance of controlledozone-depleting substances (ODSs), and are enabling the return of the ozone layer toward 1980 levels.• The sum of the measured tropospheric abundances of substances controlled under the MontrealProtocol continues to decrease. Most of the major controlled ODSs are decreasing largely as projected, andhydrochlorofluorocarbons (HCFCs) and halon-1301 are still increasing. Unknown or unreported...

  2. The Electrical Control Unit Research of Small Two-Stroke Aeronautics Gasoline Engine%小型二冲程航空汽油机电控系统研究

    Institute of Scientific and Technical Information of China (English)

    黄健; 曹占国

    2012-01-01

    研究设计了无人机用小型二冲程汽油机电控系统,重点介绍了其燃油喷射系统.在HT5发动机电控单元开发平台上设计了发动机的控制策略,并对控制策略进行了硬件在环仿真试验,验证了控制策略的有效性,实现了电控单元对航空汽油机的有效控制.%The electrical control system of a small two-stroke gasoline engine for Unmanned Aerial Vehicle (UAV) is studied. The fuel injection system is introduced particularly. The engine control strategy was designed on the HT5 platform. And in accordance with the engine control strategy, hardware-in-the-loop-simula-tion testing was performed. The test results show the validity of the control strategy. So the electrical control u-nit can be used to control the engine effectively.

  3. Spot welding of mid-high strength aluminum alloys for aeronautic industry%航空用中、高强度铝合金点焊工艺

    Institute of Scientific and Technical Information of China (English)

    张学军; 李艳; 张文扬

    2012-01-01

    Some kinds of spot welding processes of mid-high strength aluminum alloys parts such as the plate with large thickness ratio,dissimilar aluminum alloys,bent plates and undercoating plate were studied,respectively. The characteristics and difficulties were analyzed for different spot welding processes. The results show that the heat generation and radiation from the contacting zones can be controlled effectively with the formation of the nugget in a suitable size through the appropriate adjustments of the welding parameters and the size of electrodes. It is necessary for the spot welding process with undercoating to exert the pre-pressure to squeeze the undercoating out of the contact zones.%针对航空用中、高强铝合金结构件的大厚度比铝合金点焊、异种铝合金点焊、弯板结构点焊、涂底漆点焊,分析了构件点焊工艺特点和难点.研究表明:通过调整焊接参数和电极尺寸能有效地控制接触面的产热-散热情况,从而获得尺寸合适的熔核;对涂底漆点焊,焊前应施加预压力将底漆从接触面排走.

  4. Study and characterization of dosimeter LiF:Mg,Cu,P for using in aeronautical dosimetry; Estudo e caracterizacao do dosimetro de LiF:Mg,Cu,P para utilizacao em dosimetria aeronautica

    Energy Technology Data Exchange (ETDEWEB)

    Flavia, Hanna, E-mail: hannasantana.f@gmail.com [Universidade Paulista (UNIP), Sao Jose dos Campos, SP (Brazil); Federico, Claudio; Lelis, Odair; Pereira, Heloisa; Pereira, Marlon, E-mail: claudiofederico@ieav.cta.br [Instituto de Estudos Avancados (EFA-A/IEAV), Sao Jose dos Campos, SP (Brazil). Div. de Fisica Aplicada

    2014-07-01

    The effects of cosmic ionizing radiation incidents in aircraft components and crews has been a source of concern and motivated increasingly studies and improvements in the area. The low dose rates involved in this radiation field in aircraft flight altitudes imply Dosimetric necessity of using materials with high efficiency of detection, to enable studies lower cumulative doses resulting in shorter routes or lower altitude. The choice of thermoluminescent dosimeters LiF: Mg, Cu, P was done by having a detection efficiency of about fifteen times higher than its predecessor (LiF: Mg, Ti), and therefore, applied in very low doses dosimetry, and environmental dosimetry . The implementation of the use of pair dosimetric TLD-600H and 700H-TLD will serve as support for testing and studies on the effects of low doses of cosmic radiation in environmental dosimetry applied in the aviation environment in the usual flight altitudes. In this paper are presented the results of development of a methodology for dosimetry low doses of gamma radiation and neutrons using the pair dosimetric TLD-600H and 700H-TLD. The results demonstrate a sensitivity of dosimeters well above the dosimeters LiF: Mg, Ti confirming its suitability for dosimetry of low doses.

  5. Fractografia de compósito estrutural aeronáutico submetido à caracterização de tenacidade à fratura interlaminar em modo I Fractography of aeronautical composite structures submitted to mode I interlaminar fracture toughness characterization

    OpenAIRE

    Geraldo Maurício Cândido; Mirabel Cerqueira Rezende; Maurício Vicente Donadon; Sérgio Frascino Müller de Almeida

    2012-01-01

    Muitos componentes das modernas aeronaves estão sendo manufaturados em compósitos poliméricos. Laminados de resina epóxi modificada reforçada com fibras de carbono contínuas são empregados em estruturas primárias e secundárias para reduzir o peso e melhorar o desempenho operacional. Porém, se ocorrer uma falha circunstancial, o processo de fratura desses laminados é complexo e pode envolver mecanismos de danos interlaminares. A delaminação é a descontinuidade interlaminar que pode se propagar...

  6. Annual view (1999) - aeronautic relation/space relation. Space relation - communication/broadcasting/engineering test satellite; Nenkan tenbo (1999) koku kankei uchu kankei. Tsushin, hoso, gijutsu shiken eisei kanren

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-05

    To cope with the increasing communication demand, the R and D of engineering test satellite V III are being conducted being aimed at developing a technology of the world's largest class geostationary satellite. As to the large developing rectenna, a model for development was manufactured and is now in test. In August and September 1999, the system combustion test of complete two-liquid chemical propulsion system was carried out at Ishikawajima-Harima Heavy Industries. The R and D of the data relay technology satellite are being conducted for the purpose of conducting orbital demonstrative tests to improve the data relay functional performance of satellite and to spread the data relay range. The engineering test satellite VII was developed to study the space rendezvous/docking technology and the basic technology of space use robot. It was launched in November 1997 and got a lot of valuable data. The operation of satellite has been continued for the acquisition of data such as secular changes of satellite equipment. About the communication broadcasting satellite, experiments and functional tests were finished, and the operation was stopped in August 1999. (NEDO)

  7. National Aeronautics and Space Administration (NASA) Earth Science Research for Energy Management. Part 1; Overview of Energy Issues and an Assessment of the Potential for Application of NASA Earth Science Research

    Science.gov (United States)

    Zell, E.; Engel-Cox, J.

    2005-01-01

    Effective management of energy resources is critical for the U.S. economy, the environment, and, more broadly, for sustainable development and alleviating poverty worldwide. The scope of energy management is broad, ranging from energy production and end use to emissions monitoring and mitigation and long-term planning. Given the extensive NASA Earth science research on energy and related weather and climate-related parameters, and rapidly advancing energy technologies and applications, there is great potential for increased application of NASA Earth science research to selected energy management issues and decision support tools. The NASA Energy Management Program Element is already involved in a number of projects applying NASA Earth science research to energy management issues, with a focus on solar and wind renewable energy and developing interests in energy modeling, short-term load forecasting, energy efficient building design, and biomass production.

  8. Analysis on Cyber-Physical System and Its Application in Aeronautical Manufacturing Industry%信息物理融合系统及其在航空制造业应用展望

    Institute of Scientific and Technical Information of China (English)

    侯志霞; 邹方; 吕瑞强; 王湘念

    2014-01-01

    信息物理融合系统(Cyber-Physical System,CPS)是当前国内外研究的热点,是实施智能化制造的核心技术.阐述了CPS的定义、原理和特点,并就CPS在航空制造业的应用前景和发展路线进行了分析.

  9. Inlfuences Analysis of Restricted Load on Tyres During Voiture Aeronautical Transportation%轮式装备航空运输中限动载荷要求对轮胎的影响分析

    Institute of Scientific and Technical Information of China (English)

    张恒铭; 田里; 魏庆

    2015-01-01

    In order to clarify limit load requirements of the degree of inlfuence on the tyre in the air transport of the wheeled equipment, according to the aviation limit load requirements, analyzed the wheeled equipment limited load state in the air transport and established the tire load model in this paper, and the limited dynamic load effect was analyzed under different tyre pressure by example, it ift the limit load requirements on the tire curve in different tire pressure.According to the curve, suitable tyre pressure should be taken in wheeled equipments transportaction, prventing wheeled equipments and aircraft structure injury. Provides reference for the safety of wheeled equipments air transporation.%为了明确轮式装备在航空运输中限动载荷要求对轮胎影响程度,根据航空限动载荷要求,分析了轮式装备在航空运输中受到限动载荷的状态,建立了轮胎受载模型,计算分析了限动要求载荷对轮胎的影响程度,拟合出限动载荷要求在不同轮胎压强下对轮胎的影响曲线。根据影响曲线可采取合适的轮胎压强对轮式装备进行航空运输,防止在航空运输中损伤轮式装备和飞机结构,为轮式装备在航空运输中运输安全提供了参考。

  10. 航空制造企业合作创新的知识产权共享策略博弈分析%Intellectual Property Sharing Strategy in Cooperative Innovation for Aeronautical Enterprises Based on Game Theory

    Institute of Scientific and Technical Information of China (English)

    郭永辉

    2012-01-01

    首先分析了航空制造企业合作创新的基本类型以及特点.其次分析了国防知识产权区别于普通知识产权的主要特点.在此基础上,基于博弈经济学方法研究航空制造企业合作创新的知识产权混合策略博弈,分析了航空制造企业合作创新的知识产权共享行为决策以及混合策略均衡时的期望效用,指出航空制造企业知识产权共享的期望效用取决于知识产权共享活动所带来的最大收益以及合作企业知识产权共享意愿(概率).

  11. Structure-property investigations on a laser beam welded dissimilar joint of aluminium AA6056 and titanium Ti6Al4V for aeronautical applications. Part II: resistance to fatigue crack propagation and fracture

    Energy Technology Data Exchange (ETDEWEB)

    Horstmann, M.; Ventzke, V.; Petrovski, B.; Kocak, M. [GKSS Research Centre Geesthacht, Institute of Materials Research, Materials Mechanics, Geesthacht (Germany); Kocik, R.; Tempus, G. [AIRBUS Deutschland GmbH, Metal Technology, Bremen (Germany); Vaidya, W.V.

    2009-10-15

    Investigations were continued on the dissimilar laser beam welds of AA6056 and Ti6Al4V, fabricated by inserting Ti-sheet into the profiled Al-sheet and melting AA6056 alone. By using microstructure, hardness and strength as the criteria, sites exhibiting non-uniform microstructure and localized plastic deformation due to strength mismatch were investigated in two orientations: crack parallel to the weld and crack perpendicular to the weld for fatigue crack propagation and fracture toughness at room temperature. Effect of temper of AA6056 on these properties was studied for two conditions; welding in T4 followed by post weld heat treatment T6, and welding in T6 and naturally aged for a defined period. The orientation ''crack parallel to the weld'' was investigated in 3 locations on the side of AA6056: the interface and the two changeovers on the Al-side. Firstly, between the fusion zone and the heat affected zone (3 mm from the interface) and secondly, between (primary) heat affected zone and towards the base material (7 mm from the interface). Although brittle intermetallic TiAl{sub 3} had been formed at the interface, uncontrolled separation or debonding at the interface was not observed. Insofar the bond quality of the weld was good. However, the ranking of interface was the lowest since fatigue crack propagation was relatively faster than that in the fusion zone and heat affected zone, and fracture toughness was low. Therefore, unstable fatigue crack propagation is observed when the crack propagates perpendicular to the weld from AA6056 towards Ti6Al4V. The results have shown that the dissimilar joints exhibit improved performance when laser beam welded in the T6 condition. (Abstract Copyright [2009], Wiley Periodicals, Inc.) [German] Teil II: Widerstand gegen Ermuedungsrissausbreitung und Bruch Die Untersuchungen an der laserstrahlgeschweissten Mischverbindung aus AA6056 und Ti6Al4V wurden fortgesetzt. Fuer die Ermuedungsrissausbreitungs- und Bruchzaehigkeitsversuche bei Raumtemperatur wurde die Al-seitige lokale Heterogenitaet des Gefueges, der Haerte und Festigkeit als Kriterium fuer die Festlegung der Risspositionen in den Verbindungen herangezogen: Riss parallel zur Schweissnaht und Riss senkrecht zur Schweissnaht. Dabei wurde auch der Einfluss des Laserstrahlschweissens in den Warmauslagerungszustaenden T4 und T6 der Al-Legierung AA6056 auf die Ermuedungsrissausbreitung und Bruchzaehigkeit beurteilt. Die im Zustand T4 laserstrahlgeschweisste Verbindung wurde mit einer nachfolgenden Warmauslagerung in den Zustand T6 gebracht. Die im Zustand T6 laserstrahlgeschweisste Verbindung wurde nach einer definierten Kaltauslagerungsdauer getestet. Die Orientierung ''Riss parallel zur Schweissnaht'' wurde in 3 Bereichen auf der Al-Seite untersucht: an der Grenzflaeche zwischen AA6056 und Ti6Al4V, zwischen Fuegezone und Waermeeinflusszone (3 mm Abstand von der Grenzflaeche) und zwischen Waermeeinflusszone und Grundwerkstoff (7 mm Abstand von der Grenzflaeche). Obwohl sich an der Grenzflaeche sproedes TiAl{sub 3} gebildet hat, wurde keine Trennung oder Abloesung an der Grenzflaeche beobachtet. Insofern war die Bindequalitaet der laserstrahlgeschweissten Mischverbindung als gut zu bewerten. Allerdings war im Bereich der Grenzflaeche die Ermuedungsrissausbreitung schneller als in der Fuegezone und der Waermeeinflusszone und die Bruchzaehigkeit vergleichsweise gering. Instabiler Ermuedungsrissfortschritt wurde beobachtet, wenn sich der Riss senkrecht zur Schweissnaht von AA6056 in Richtung Ti6Al4V ausbreitet. Die Ergebnisse haben gezeigt, dass die Mischverbindung einen verbesserten Widerstand aufweist, wenn im T6-Zustand laserstrahlgeschweisst wird. (Abstract Copyright [2009], Wiley Periodicals, Inc.)

  12. 南昌航院研究生管理信息系统的设计与开发%Designing and Exploiting the Postgraduate Management Information System of Nanchang Institute of Aeronautical Technology

    Institute of Scientific and Technical Information of China (English)

    张瑞卿; 赵丽红; 罗明; 董应虎

    2005-01-01

    介绍了南昌航空工业学院研究生管理系统.本系统划分为新生管理子系统、学籍管理子系统、成绩管理子系统、导师管理子系统、系统维护子系统.系统运行在Microsft Windows 2000环境下,采用Microsft公司的Visual Basic 6.0中文版进行开发,后台采用SQL Server 2000数据库,基本实现了一整套学生管理的信息化.

  13. NASA/DOD Aerospace Knowledge Diffusion Research Project. Paper 62: The Influence of Knowledge Diffusion on Aeronautics Innovation: The Research, Development, and Production of Large Commercial Aircraft in France, Germany, and the United Kingdom

    Science.gov (United States)

    Golich, Vicki L.; Pinelli, Thomas E.

    1997-01-01

    This paper focuses on how European public policies-individually and collectively - influence the diffusion of knowledge and technology. It begins with an overview of the roles played historically and currently by European governments in the Research, Development and Production (RD&P) of Large Commercial Aircraft (LCA). The analytical framework brings together literature from global political economy, comparative politics, business management, and science and technology policy studies. It distinguishes between the production of knowledge, on the one hand, and the dissemination of knowledge, on the other. France, Germany, and the United Kingdom serve as the analytical cases. The paper concludes with a call for additional research in this area, some tentative lessons learned, and a discussion of the consequences of national strategies and policies for the diffusion of knowledge and technology in an era of globalizaton.

  14. Guide for Authors

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    1 Chinese Journal of Aeronautics (CJA) is a comprehensive academic journal dealing with the fields of aeronautics and astronautics. The Journal is sponsored by the Chinese Society of Aeronautics and Astronautics. It is a bimonthly journal in English,

  15. Guide for Authors

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    1 Chinese Journal of Aeronautics (CJA) is a comprehensive academic journal dealing with the fields of aeronautics and astronautics. The Journal is sponsored by the Chinese Society of Aeronautics and Astronautics. It is a bimonthly

  16. In-situ EBCs for High Performance Composite Propulsion Components Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Silicon Carbide based ceramic matrix composites (CMCs) offer the potential to fundamentally change the design and manufacture of aeronautical and space propulsion...

  17. Handheld Electronics EHM Sensor Probe for Determination of Remaining Useful Life Project

    Data.gov (United States)

    National Aeronautics and Space Administration — National Aeronautical and Space Administration's (NASA) Aviation Safety Program "seeks capabilities furthering the practice of proactive safety management."...

  18. ElastiGlass Barrier Film and Food Processing Techniques for the 3-to-5 Year Shelf-Stable Food Package Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Current interests within the National Aeronautics and Space Administration (NASA) foresee extension of exploratory space missions to the Moon, Mars, and beyond....

  19. Lightweight Small-Scale Turbine Generator Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The proposed innovation is a propulsion technology that will help achieve NASA's Fundamental Aeronautics Program (FAP) goals of reducing emissions and increasing...

  20. Environmentally Responsible Aviation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Created in 2009 as part of NASA's Aeronautics Research Mission Directorate's Integrated Systems Research Program, the Environmentally Responsible Aviation...

  1. Lightweight Small-Scale Turbine Generator Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The proposed innovation is a power conversion technology that will help achieve NASA's Fundamental Aeronautics Program (FAP) goals of reducing emissions and...

  2. 移动应用软件对高职学生英语词汇学习的影响--以成都航空职业技术学院为例%The Influence of Mobile Applications on Higher Vocation-al Students' English Vocabulary Learning:A Case Study on Chengdu Aeronautic Polytechnic

    Institute of Scientific and Technical Information of China (English)

    葛书艺

    2015-01-01

    With the progress of mobile learning, educational ap-plications on smartphone and tablet computer have been widely applied. Through empirical analysis and detailed elaboration, this paper made a preliminary exploration on the use of vocabulary memorization applications in assisting higher vocational English teaching, including its advantages and shortcomings. The aim is to organically integrate mobile learning into the present higher vocational course teaching, give play to its practical value, and promote students' progress in English learning.%随着移动学习的进步,面向智能手机和平板电脑的教育类应用软件得到了广泛应用。本文通过实证分析、详细阐述,就高职院校利用单词记忆应用软件辅助英语教学进行了初步的探讨,包括其优势与不足。旨在将移动学习有机地融入到现有高职课程教学中,发挥其实用价值,并推动学生在英语学习上的进步。

  3. 高校教学管理效益问题及对策研究——以南京航空航天大学为例%On Management Efficiency of College Teaching: Problems and Solutions- Case Study of Nanjing University of Aeronautics and Astronautics

    Institute of Scientific and Technical Information of China (English)

    周聚

    2011-01-01

    提高教学管理效益是高校人才培养质量的必然要求。当前,教学管理中管理人员、教师与学生三者之间对教学诉求和认同存在差异,同时存在教学管理制度刚性与现实执行中的柔性矛盾,教学资源配置缺乏有效统合。应在贯彻《国家中长期教育改革与发展规划纲要(2010-2020年)》精神的过程中,做好教学管理各项制度的设计;结合学校实际,优化教学资源的配置;同时,结合时代要求和学校人才培养目标,改革人才培养方式。%To ensure the quality of colleges and universities training, it is an essential requirement to improve the efficiency of routine teaching management. Currently, in the realm of the teaching management, there are some conflicting appeals and identities for education among teaching management administrators, teachers and students, the rigid management system conflicts with the flexible practice, and the teaching resources lack of effective integration. In the implementation of the spirit of "National Mid-long-term Education Reform and Development Plan (2010-2020)", we should do a good job of the teaching management system design and optimize the configuration of the teaching resources based on the actual school situations. Meanwhile, we should reform the student cultivation mode through the combination of the demand of the times and the objectives in talent cultivation.

  4. Statement of Aaron Cohen, Director, Research and Engineering, Johnson Space Center and Chairman, Space Station Advanced Technology Advisory Committee, National Aeronautics and Space Administration, before the Subcommittee on Science, Technology, and Space, Committee on Commerce, Science, and Transportation, United States Senate

    Science.gov (United States)

    Cohen, A.

    1985-01-01

    The activities of NASA's Space Station Advanced Technology Advisory Committee is discussed. Advanced Technology Advisory Committee (ATAC) activities over the last year are reviewed in preparation of the report to Congress on the potential for advancing automation and robotics technology for the space station and for the U.S. economy.

  5. 某型航空电源车前、后发动机启动及控制系统改用一组电源的实现%Used a set of power supply for front and back engine start and control system of an aeronautic vehicle after change

    Institute of Scientific and Technical Information of China (English)

    郭占玺; 黄贵

    2009-01-01

    针对用户在使用维护某航空电源车过程中经常反馈的不足之处,笔者对前、后发动机启动及控制系统电路原理进行认真分析,提出了前、后发动机启动及控制系统共用一组电源的改接方法,并通过实践验证,可以借鉴使用.%Analyzed the circuit theory of front and back engine start and control system according to the disadvantages raised by customers in using and maintenance, and given the method of how to use one set of power supply for front and back engine start and control system. It could be used through practice.

  6. Modelos de programação inteira mista para o planejamento do corte unidimensional de tubos metálicos na indústria aeronáutica agrícola Mixed integer programming models for the planning of one-dimensional metallic pipe cutting in the aeronautics industry

    Directory of Open Access Journals (Sweden)

    Alexander Abuabara

    2008-12-01

    Full Text Available Este trabalho busca otimizar o planejamento do processo de corte unidimensional de tubos estruturais metálicos utilizados na fabricação de aeronaves leves agrícolas. Dois modelos de programação linear inteira mista são apresentados com o objetivo de minimizar as perdas do material cortado e considerando a possibilidade de gerar sobras com tamanhos suficientes para reaproveitamento (retalhos. Os modelos são resolvidos por meio de uma linguagem de modelagem usando um software de otimização. Para a validação dos modelos, dois experimentos computacionais foram realizados com dados reais de uma carteira de pedidos de uma aeronave leve voltada para o segmento do mercado agrícola, o Ipanema, produzido pela empresa brasileira Neiva/Embraer. As soluções dos modelos são comparadas com as soluções de uma heurística residual de arredondamento guloso da literatura e também com as soluções utilizadas pela empresa. Os resultados mostram que os modelos são úteis para apoiar as decisões envolvidas no planejamento deste processo de corte.This study aims to optimize the one-dimensional cutting process planning of structural metallic tubes used to build agricultural light aircrafts. Two mixed integer linear programming models are presented to minimize the waste of material cut and considering the possibility of generating surpluses with sizes sufficiently large for reuse (leftovers. The models are solved using a commercial modeling language and an optimization solver. For the validation of the models, two computational experiments were performed with actual data from the portfolio of a light aircraft designed for agricultural purposes, the Ipanema, produced by the Brazilian company Neiva/Embraer. The solutions of the models are compared with the solutions of a constructive heuristic of the literature and the solutions used by the company. The results show that the models are useful for being used in the planning of this cutting process.

  7. 三交替制勤務と二交替制勤務における夜間勤務の疲労度比較 : フリッカー値とNational Aeronautics and Space Administration task load index (NASA-TLX)の結果から

    OpenAIRE

    川手, 秀子; 小幡, 礼子; 武田, 明美; 内村, 実希; 下條, 美芳; 楊箸, 隆哉; 小林, 千世

    2000-01-01

    主観的な自覚的疲労感と心身に実際に起こっている疲労とは必ずしも一致しないことが多い。そこで,疲労を客観的かつ定量的に測定するため,中枢性の疲労をフリッカー値,精神的疲労をNASA-TLXで測定し比較した。その結果,勤務開始時のフリッカー値の比較において,三交替制勤務の日勤から深夜勤務に入る勤務パターンで,他の勤務パターンより低い値となった。勤務終了時のフリッカー値や,NASA-TLXの比較では,著明な差は認められなかった。三交替制勤務で日勤から深夜勤務に入る勤務パターンでは,勤務から次の勤務までの時間が短く,前の勤務の疲労を十分回復しないまま疲れた状態で,次の勤務に入っていることが原因と考えられる。このことから,三交替制勤務で日勤から深夜勤務に入る勤務パターンでは,勤務開始時の中枢性疲労の程度が大きく,好ましい勤務パターンではないと考えられる。...

  8. Evaluación de diferentes sistemas de protección contra la corrosión marina en la aleación de aplicación aeronáutica Alclad 2024-T3 Evaluating protection systems against marine corrosion of aeronautic alloy Alclad 2024-T3

    Directory of Open Access Journals (Sweden)

    Pérez Londoño Fabian Andrés

    2011-05-01

    Full Text Available  

    Se muestra la obtención de dos sistemas de recubrimientos protectores como una alternativa de protección contra la corrosión de la aleación de aluminio Alclad 2024-T3, que es utilizada en la fabricación del compartimiento de la batería de los aviones T-41. Dichos sistemas constan de tres tipos de resinas orgánicas: una primera capa de resina poliéster P-115, a manera de imprimante en ambos sistemas de recubrimientos, y una segunda capa de resina de poliéster Hetron 197-3 en el primer caso, o de resina vinil-éster F-010 en el segundo. El análisis de la morfología superficial se realizó mediante microscopía electrónica de barrido (SEM, observando la rugosidad generada por el tratamiento superficial. El estudio electroquímico de los recubrimientos se desarrolló mediante la técnica de espectroscopía de impedancia electroquímica (EIS y curvas de polarización Tafel; de esta manera se encontró que todos los sistemas presentan un buen desempeño frente a la corrosión en un medio marino, y que el sistema con preparación superficial química muestra un comportamiento protector superior para el Alodine 5700 + Hetron 197-3; se obtuvo una velocidad de corrosión 1,42 x 10-12 mpy, mientras que para el sustrato la velocidad fue de 1,59 x 10-7 mpy.

     

     

    This paper shows how two coating systems were obtained as an alternative for protection against corrosion of al clad 2024-T3which is used in battery compartment manufacture for T-41 aircraft. Such systems consist of three types of organic resin: a first layer of P-115 polyester resin as the first coating on both systems, and a second layer of Hetron 197-3 polyester resin in the first system and vinyl-ester resin in the second one. Scanning electron microscopy (SEM was used for surface morphology analysis, showing the roughness produced by surface treatment. The coatings were electrochemically characterised by electro chemical impedance spectroscopy (EIS and Tafel polarization curves; it was found that both systems had good performance against corrosion in a marine environment and the chemical surface preparation system had a superior protective pattern for Alodine5700 + 197-3 Hetron, a 1.42x10-12mpycorrosion rate being obtained while substratum rate was 1.59x10-7 mpy.

     

  9. 14 CFR 1261.316 - Policy.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Policy. 1261.316 Section 1261.316 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION PROCESSING OF MONETARY CLAIMS (GENERAL...-Accruing On or After January 18, 1967 § 1261.316 Policy. (a) The National Aeronautics and...

  10. 14 CFR 1207.102 - Waiver of prohibition in 18 U.S.C. 208.

    Science.gov (United States)

    2010-01-01

    ... Positions”) or section 203(c)(10) (“Alien Scientists”) of the National Aeronautics and Space Act of 1958, as... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Waiver of prohibition in 18 U.S.C. 208. 1207.102 Section 1207.102 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION...

  11. 76 FR 49483 - Federal Acquisition Regulation; Information Collection; Organization and Direction of Work

    Science.gov (United States)

    2011-08-10

    ... GENERAL SERVICES ADMINISTRATION NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Federal Acquisition Regulation; Information Collection; Organization and Direction of Work AGENCY: Department of Defense (DOD), General Services Administration (GSA), and National Aeronautics and Space Administration (NASA)....

  12. Hydrophobic Polymers with Adherend Complexing Sidechains as Durable Aerospace Adhesives Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In support of NASA Aeronautics Research Mission Directorate and Aviation Safety Mission, NanoSonic has developed a series of moisture and corrosion mitigating,...

  13. Hydrophobic Polymers with Adherend Complexing Sidechains as Durable Aerospace Adhesives Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In support of NASA's Aeronautics Research Mission Directorate, NanoSonic would optimize our moisture-resistant aerospace adhesives with in-situ corrosion mitigating...

  14. Space Qualified Non-Destructive Evaluation and Structural Health Monitoring Technology Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NextGen Aeronautics is proposing an innovative space qualified non-destructive evaluation and health monitoring technology. The technology is built on concepts...

  15. 75 FR 66800 - National Environmental Policy Act; Wallops Flight Facility Shoreline Restoration and...

    Science.gov (United States)

    2010-10-29

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND... and Infrastructure Protection Program AGENCY: National Aeronautics and Space Administration (NASA... involve an initial construction phase and future follow-on maintenance cycles. The initial...

  16. 14 CFR 43.9 - Content, form, and disposition of maintenance, preventive maintenance, rebuilding, and alteration...

    Science.gov (United States)

    2010-01-01

    ... Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Content, form, and disposition of maintenance, preventive maintenance, rebuilding, and alteration records (except inspections performed...

  17. 75 FR 8997 - National Environmental Policy Act; Wallops Flight Facility Shoreline Restoration and...

    Science.gov (United States)

    2010-02-26

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND... and Infrastructure Protection Program AGENCY: National Aeronautics and Space Administration (NASA... future follow-on maintenance cycles. The initial construction phase would likely include three...

  18. 77 FR 27096 - Notice of Intent To Grant Exclusive Copyright License

    Science.gov (United States)

    2012-05-08

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Notice of Intent To Grant Exclusive Copyright License AGENCY: National Aeronautics... documentation described in NASA Case No. KSC-12909 entitled ``Systems Maintenance Automated Repair Tasks,''...

  19. 78 FR 18593 - Information Collection; Information Regarding Responsibility Matters

    Science.gov (United States)

    2013-03-27

    ... GENERAL SERVICES ADMINISTRATION NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Information Collection... Administration (GSA), and National Aeronautics and Space Administration (NASA). ACTION: Notice of request for...-417), enacted on October 14, 2008, required the development and maintenance of an information...

  20. High-Fidelity Aerodynamic Design with Transition Prediction Project

    Data.gov (United States)

    National Aeronautics and Space Administration — To enhance aerodynamic design capabilities, Desktop Aeronautics proposes to combine a new sweep/taper integrated-boundary-layer (IBL) code that includes transition...

  1. Novel Material Systems and Methodologies for Transient Thermal Management Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The research team took a fully collaborative approach with  NASA, the University of Central Florida, Embry Riddle Aeronautical University, and a ...

  2. 78 FR 61397 - Notice of Information Collection

    Science.gov (United States)

    2013-10-03

    ... SPACE ADMINISTRATION Notice of Information Collection AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of information collection. ] SUMMARY: The National Aeronautics and Space... acknowledgement forms, and participant feedback forms for the NASA Great Moonbuggy Race. This...

  3. 76 FR 31424 - Federal Acquisition Regulation; Federal Acquisition Circular 2005-52; Small Entity Compliance Guide

    Science.gov (United States)

    2011-05-31

    ... GENERAL SERVICES ADMINISTRATION NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 48 CFR Chapter 1 Federal... of Defense (DoD), General Services Administration (GSA), and National Aeronautics and Space..., operation and maintenance, management, and deconstruction practices in applicable acquisitions....

  4. 76 FR 7526 - Major System Acquisition; Earned Value Management

    Science.gov (United States)

    2011-02-10

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND... AGENCY: National Aeronautics and Space Administration. ACTION: Proposed rule with request for comments... services or grounds maintenance services. (4) Contracting officers shall request the assistance of...

  5. SiC Avalanche Photodiodes and Arrays Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In this Phase 2 SBIR program submitted to National Aeronautics and Space Administration (NASA) in response to Topic S1.05 (Detector Technologies for UV, X-Ray,...

  6. Advanced Long-Range Video Capabilities Using Speckle Imaging Techniques Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Flight-testing is a crucial component in NASA's mission to research and develop new aeronautical concepts because it allows for verification of simulated and...

  7. Use of Leading Edge Waves to Increase Lift/Drag Ratio Project

    Data.gov (United States)

    National Aeronautics and Space Administration — One of the goals of NASA's Fundamental Aeronautics "Subsonic Fixed Wing" project is to reduce fuel burn by 25% 5% by 2018. This corresponds approximately to an...

  8. Shock Generation and Control Using DBD Plasma Actuators Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Shock-wave/boundary-layer interactions (SWBLI) pose challenges to aeronautical engineers because they create regions of adverse pressure gradients as a result of...

  9. ElastiGlass Barrier Film and Food Processing Techniques for the 3-to-5 Year Shelf-Stable Food Package Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The National Aeronautics and Space Administration (NASA) foresee extension of exploratory space missions to the Moon, Mars, Venus and beyond. To reach these outer...

  10. 75 FR 2892 - NASA Advisory Council; Science Committee; Meeting

    Science.gov (United States)

    2010-01-19

    ... meeting: Full name; gender; date/ place of birth; citizenship; visa/green card information (number, type... SPACE ADMINISTRATION NASA Advisory Council; Science Committee; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of meeting. SUMMARY: The National Aeronautics and...

  11. Development of REvolutionary Adaptive Morphing UAV (DREAM-UAV) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NextGen Aeronautics, Inc. proposes the development of the innovative use of morphing structures for maneuver and flight control as a project for NASA?s...

  12. High-Fidelity Aerodynamic Design with Transition Prediction Project

    Data.gov (United States)

    National Aeronautics and Space Administration — To enhance aerodynamic design capabilities, Desktop Aeronautics proposes to significantly improve upon the integration (performed in Phase 1) of a new sweep/taper...

  13. Free-Flying Unmanned Robotic Spacecraft for Asteroid Resource Prospecting and Characterization Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Embry-Riddle Aeronautical University (ERAU) and Honeybee Robotics (HBR) proposes to develop an integrated autonomous free-flyer robotic spacecraft system to support...

  14. Innovative Ground Habitats for Lunar Operational Outpost (IGLOO) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NextGen Aeronautics, Inc. is proposing an alternate architecture for inflatable lunar habitats that takes advantage of inflatable beam technologies currently being...

  15. Mode Transition Variable Geometry for High Speed Inlets for Hypersonic Aircraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Hypersonic propulsion research has been a focus of the NASA aeronautics program for years. Previous high-speed cruise and space access programs have examined the...

  16. Ultra-Miniaturized Star Tracker for Small Satellite Attitude Control Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Creare and Embry-Riddle Aeronautical University (ERAU) propose to complete the design, development, and testing of an ultra compact star tracker specifically...

  17. Citric Acid Alternative to Nitric Acid Passivation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Corrosion is an extensive problem that impacts National Aeronautics and Space Administration (NASA) and Department of Defense (DoD).  The deleterious...

  18. 75 FR 67399 - Performance Review Board, Senior Executive Service (SES)

    Science.gov (United States)

    2010-11-02

    ... From the Federal Register Online via the Government Publishing Office NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Performance Review Board, Senior Executive Service (SES) AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of Membership of SES Performance Review...

  19. 76 FR 65752 - International Space Station (ISS) National Laboratory Advisory Committee; Charter Renewal

    Science.gov (United States)

    2011-10-24

    ... SPACE ADMINISTRATION International Space Station (ISS) National Laboratory Advisory Committee; Charter Renewal AGENCY: National Aeronautics and Space Administration (NASA). ACTION: Notice of renewal and... Relations, (202) 358-0550, National Aeronautics and Space Administration, Washington, DC 20546-0001....

  20. Cradle-to-Grave Monitoring of Composite Aircraft Structures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NextGen Aeronautics, after achieving promising results in Phase I, is proposing a simple yet powerful damage identification technique for honeycomb advanced...