WorldWideScience

Sample records for avionics

  1. Avionics Systems

    Directory of Open Access Journals (Sweden)

    P.M. Soundar Rajan

    2013-03-01

    Full Text Available ‘Avionics’ systems, over the decades, have grown from simple communication radios and navigation equipments to complex integrated equipments primarily infiuenced by dominance of digital technology. Continuous growth in integrated circuit technology, functional integration of complete system on chip, very high speed communication channels and fault tolerant communication protocols have brought remarkable advancements in avionics systems. Further Mechanical and Pneumatic functional blocks are being replaced by digital systems progressively and decisively. New generation aircraft are being built around powerful avionics assets to provide stress free cockpit to the pilot.Defence Science Journal, 2013, 63(2, pp.129-130, DOI:http://dx.doi.org/10.14429/dsj.63.4269

  2. Avionics Architecture Modelling Language

    Science.gov (United States)

    Alana, Elena; Naranjo, Hector; Valencia, Raul; Medina, Alberto; Honvault, Christophe; Rugina, Ana; Panunzia, Marco; Dellandrea, Brice; Garcia, Gerald

    2014-08-01

    This paper presents the ESA AAML (Avionics Architecture Modelling Language) study, which aimed at advancing the avionics engineering practices towards a model-based approach by (i) identifying and prioritising the avionics-relevant analyses, (ii) specifying the modelling language features necessary to support the identified analyses, and (iii) recommending/prototyping software tooling to demonstrate the automation of the selected analyses based on a modelling language and compliant with the defined specification.

  3. Flight Avionics Hardware Roadmap

    Science.gov (United States)

    Some, Raphael; Goforth, Monte; Chen, Yuan; Powell, Wes; Paulick, Paul; Vitalpur, Sharada; Buscher, Deborah; Wade, Ray; West, John; Redifer, Matt; Partridge, Harry; Sherman, Aaron; McCabe, Mary

    2014-01-01

    The Avionics Technology Roadmap takes an 80% approach to technology investment in spacecraft avionics. It delineates a suite of technologies covering foundational, component, and subsystem-levels, which directly support 80% of future NASA space mission needs. The roadmap eschews high cost, limited utility technologies in favor of lower cost, and broadly applicable technologies with high return on investment. The roadmap is also phased to support future NASA mission needs and desires, with a view towards creating an optimized investment portfolio that matures specific, high impact technologies on a schedule that matches optimum insertion points of these technologies into NASA missions. The roadmap looks out over 15+ years and covers some 114 technologies, 58 of which are targeted for TRL6 within 5 years, with 23 additional technologies to be at TRL6 by 2020. Of that number, only a few are recommended for near term investment: 1. Rad Hard High Performance Computing 2. Extreme temperature capable electronics and packaging 3. RFID/SAW-based spacecraft sensors and instruments 4. Lightweight, low power 2D displays suitable for crewed missions 5. Radiation tolerant Graphics Processing Unit to drive crew displays 6. Distributed/reconfigurable, extreme temperature and radiation tolerant, spacecraft sensor controller and sensor modules 7. Spacecraft to spacecraft, long link data communication protocols 8. High performance and extreme temperature capable C&DH subsystem In addition, the roadmap team recommends several other activities that it believes are necessary to advance avionics technology across NASA: center dot Engage the OCT roadmap teams to coordinate avionics technology advances and infusion into these roadmaps and their mission set center dot Charter a team to develop a set of use cases for future avionics capabilities in order to decouple this roadmap from specific missions center dot Partner with the Software Steering Committee to coordinate computing hardware

  4. Affordable Vehicle Avionics Overview

    Science.gov (United States)

    Cockrell, James J.

    2015-01-01

    Public and private launch vehicle developers are reducing the cost of propulsion for small commercial launchers, but conventional high-performance, high-reliability avionics remain the disproportionately high cost driver for launch. AVA technology performs as well or better than conventional launch vehicle avionics, but with a fraction of the recurring costs. AVA enables small launch providers to offer affordable rides to LEO to nano-satellites as primary payloads meaning, small payloads can afford to specify their own launch and orbit parameters

  5. Avionics Architecture for Exploration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Avionics Architectures for Exploration Project team will develop a system level environment and architecture that will accommodate equipment from multiple...

  6. Panoramic projection avionics displays

    Science.gov (United States)

    Kalmanash, Michael H.

    2003-09-01

    Avionics projection displays are entering production in advanced tactical aircraft. Early adopters of this technology in the avionics community used projection displays to replace or upgrade earlier units incorporating direct-view CRT or AMLCD devices. Typical motivation for these upgrades were the alleviation of performance, cost and display device availability concerns. In these systems, the upgraded (projection) displays were one-for-one form / fit replacements for the earlier units. As projection technology has matured, this situation has begun to evolve. The Lockheed-Martin F-35 is the first program in which the cockpit has been specifically designed to take advantage of one of the more unique capabilities of rear projection display technology, namely the ability to replace multiple small screens with a single large conformal viewing surface in the form of a panoramic display. Other programs are expected to follow, since the panoramic formats enable increased mission effectiveness, reduced cost and greater information transfer to the pilot. Some of the advantages and technical challenges associated with panoramic projection displays for avionics applications are described below.

  7. Modular Avionics for Seamless Reconfigurable UAS Missions

    OpenAIRE

    2008-01-01

    Abstract Integrated Modular Avionics (IMA) architecture is a trend in current avionics that employs a partitioned environment in which different avionics functions share a unique computing environment. UAS avionics, especially in small UAS, are usually of less complexity than not the present on airliners, however, in real autonomous UAS, the onboard avionics should control not only the flight and navigation but also the mission and payload of the aircraft. This involves more complex softwa...

  8. Avionics Maintenance Technology Program Standards.

    Science.gov (United States)

    Georgia Univ., Athens. Dept. of Vocational Education.

    This publication contains statewide standards for the avionics maintenance technology program in Georgia. The standards are divided into the following categories: foundations, diploma/degree (philosophy, purpose, goals, program objectives, availability, evaluation); admissions, diploma/degree (admission requirements, provisional admission…

  9. Aerospace Avionics and Allied Technologies

    Directory of Open Access Journals (Sweden)

    Jitendra R. Raol

    2011-07-01

    Full Text Available Avionics is a very crucial and important technology, not only for civil/military aircraft but also for missiles, spacecraft, micro air vehicles (MAVs and unmanned aerial vehicles (UAVs. Even for ground-based vehicles and underwater vehicles (UWVs, avionics is a very important segment of their successful operation and mission accomplishment. The advances in many related and supporting technologies, especially digital electronics, embedded systems, embedded algorithms/software, mobile technology, sensors and instrumentation, computer (network-communication, and realtime operations and simulation, have given a great impetus to the field of avionics. Here, for the sake of encompassing many other applications as mentioned above, the term is used in an expanded sense: Aerospace Avionics (AA, although it is popularly known as Aviation Electronics (or Avionics. However, use of this technology is not limited to aircraft, and hence, we  can incorporate all the three types-ground, land, and underwater vehicles-under the term avionics.Defence Science Journal, 2011, 61(4, pp.287-288, DOI:http://dx.doi.org/10.14429/dsj.61.1122

  10. Perspectives of civil aircraft avionics development

    Directory of Open Access Journals (Sweden)

    А. В. Наумов

    1999-05-01

    Full Text Available Considered are main directions for civil avionics development. General requirements for airborne equipment functions. Analysis of airborne avionics selection per architecture and economical effectiveness in made. Proposed is the necessity of new approach to integrated avionics complex design, first of all, on basis of mathematical method for aircraft equipment and technical characteristics definition

  11. Avionics Maintenance Technology Program Guide.

    Science.gov (United States)

    Georgia Univ., Athens. Dept. of Vocational Education.

    This program guide presents the avionics maintenance technology curriculum for technical institutes in Georgia. The general information section contains the following for both the diploma program and the associate degree program: purpose and objectives; program description, including admissions, typical job titles, and accreditation and…

  12. Avionics Modification Research Analysis: From Electromechanical to Digital Avionics and from Digital to Integrated Modular Avionics (IMA)

    OpenAIRE

    2014-01-01

    The electronic sets that are being used in aviation industry are commonly summarized as “avionic = aviation electronic equipment”. Nearly seventy years ago the first avionics devices used on aircraft were communication and navigation systems based on old gauge instruments and analog systems. Since then, the industry has evolved a lot and today the avionics systems require for new and smarter functionalities thus driving the overall aviation research to an exponential rate to...

  13. System Testing in the Avionics Domain

    OpenAIRE

    2007-01-01

    When developing a new aircraft, the airframer encounters various (partly contradictory) demands and requirements. To deal with them, current avionics systems are based on the framework of integrated modular electronics which allows to use COTS products for less critical functions and uses integrated modular avionics (IMA) technology for safety-critical avionics functions. Since this evolution affects the entire development, new processes and means for the development and the verification and ...

  14. Avionic Data Bus Integration Technology

    Science.gov (United States)

    1991-12-01

    address the hardware-software interaction between a digital data bus and an avionic system. Very Large Scale Integration (VLSI) ICs and multiversion ...the SCP. In 1984, the Sperry Corporation developed a fault tolerant system which employed multiversion programming, voting, and monitoring for error... MULTIVERSION PROGRAMMING. N-version programming. 226 N-VERSION PROGRAMMING. The independent coding of a number, N, of redundant computer programs that

  15. An Automatic Development Process for Integrated Modular Avionics Software

    OpenAIRE

    2013-01-01

    With the ever-growing avionics functions, the modern avionics architecture is evolving from traditional federated architecture to Integrated Modular Avionics (IMA). ARINC653 is a major industry standard to support partitioning concept introduced in IMA to achieve security isolation between avionics functions with different criticalities. To decrease the complexity and improve the reliability of the design and implementation of IMA-based avionics software, this paper proposes an automatic deve...

  16. Generalized Nanosatellite Avionics Testbed Lab

    Science.gov (United States)

    Frost, Chad R.; Sorgenfrei, Matthew C.; Nehrenz, Matt

    2015-01-01

    The Generalized Nanosatellite Avionics Testbed (G-NAT) lab at NASA Ames Research Center provides a flexible, easily accessible platform for developing hardware and software for advanced small spacecraft. A collaboration between the Mission Design Division and the Intelligent Systems Division, the objective of the lab is to provide testing data and general test protocols for advanced sensors, actuators, and processors for CubeSat-class spacecraft. By developing test schemes for advanced components outside of the standard mission lifecycle, the lab is able to help reduce the risk carried by advanced nanosatellite or CubeSat missions. Such missions are often allocated very little time for testing, and too often the test facilities must be custom-built for the needs of the mission at hand. The G-NAT lab helps to eliminate these problems by providing an existing suite of testbeds that combines easily accessible, commercial-offthe- shelf (COTS) processors with a collection of existing sensors and actuators.

  17. Green software engineering for airbus avionics

    OpenAIRE

    2016-01-01

    Presentation at EU Ashley Project Public Forum 25 October 2016. Presentation examines the risks from Software Engineering without sustainability requirements and looks at the use of the UN Sustainable Development Goals to de-risk avionics software engineering.

  18. Demonstration Advanced Avionics System (DAAS), Phase 1

    Science.gov (United States)

    Bailey, A. J.; Bailey, D. G.; Gaabo, R. J.; Lahn, T. G.; Larson, J. C.; Peterson, E. M.; Schuck, J. W.; Rodgers, D. L.; Wroblewski, K. A.

    1981-01-01

    Demonstration advanced anionics system (DAAS) function description, hardware description, operational evaluation, and failure mode and effects analysis (FMEA) are provided. Projected advanced avionics system (PAAS) description, reliability analysis, cost analysis, maintainability analysis, and modularity analysis are discussed.

  19. Development of Avionics Installation Interface Standards. Revision.

    Science.gov (United States)

    1981-08-01

    impact on some portion of the avionics suite for Phase III of the Multinational Staged Improvement Pro- gram ( MSIP ). This program has not been fully...have improvement programs similar to that planned under the F-16 MSIP ) and piecemeal retrofit programs that are not shown on the chart. 2-4 * * The...i.e., MS 25212 form factor units) contained intrinsically low-dissi- pation avionics components and the major heat source was the standard inte

  20. HH-65A Dolphin digital integrated avionics

    Science.gov (United States)

    Huntoon, R. B.

    1984-01-01

    Communication, navigation, flight control, and search sensor management are avionics functions which constitute every Search and Rescue (SAR) operation. Routine cockpit duties monopolize crew attention during SAR operations and thus impair crew effectiveness. The United States Coast Guard challenged industry to build an avionics system that automates routine tasks and frees the crew to focus on the mission tasks. The HH-64A SAR avionics systems of communication, navigation, search sensors, and flight control have existed independently. On the SRR helicopter, the flight management system (FMS) was introduced. H coordinates or integrates these functions. The pilot interacts with the FMS rather than the individual subsystems, using simple, straightforward procedures to address distinct mission tasks and the flight management system, in turn, orchestrates integrated system response.

  1. Developing A Generic Optical Avionic Network

    DEFF Research Database (Denmark)

    Zhang, Jiang; An, Yi; Berger, Michael Stübert

    2011-01-01

    and support a wide range of avionic applications. Segregation can be made on different hierarchies according to system criticality and security requirements. The structure of each layer is discussed in detail. Two network configurations are presented, focusing on how to support different network services......We propose a generic optical network design for future avionic systems in order to reduce the weight and power consumption of current networks on board. A three-layered network structure over a ring optical network topology is suggested, as it can provide full reconfiguration flexibility...... by such a network. Finally, three redundancy scenarios are discussed and compared....

  2. Thermal Defects of Avionic Turbojet Engines

    Directory of Open Access Journals (Sweden)

    Szczepankowski Andrzej

    2016-08-01

    Full Text Available The paper analyzes the most frequent reasons associated with operation of avionic turbojet engines (ATE and leading to initiation of thermal defects affecting turbine units. These reasons are illustrated with examples of gradual deteriorations revealed on surfaces of turbine parts and subassemblies and defected during endoscopic examinations of propelling drives. Attention is paid to various design and technological improvements that are implemented to counteract such deteriorations. The analysis is focused on mistakes that are committed during operation, repairs or manufacturing of avionic turbojet engines and that may affect safety of aircraft operations.

  3. Avionics Architectures for Exploration: Building a Better Approach for (Human) Spaceflight Avionics

    Science.gov (United States)

    Goforth, Montgomery B.; Ratliff, James E.; Hames, Kevin L.; Vitalpur, Sharada V.

    2014-01-01

    The field of Avionics is advancing far more rapidly in terrestrial applications than in space flight applications. Spaceflight Avionics are not keeping pace with expectations set by terrestrial experience, nor are they keeping pace with the need for increasingly complex automation and crew interfaces as we move beyond Low Earth Orbit. NASA must take advantage of the strides being made by both space-related and terrestrial industries to drive our development and sustaining costs down. This paper describes ongoing efforts by the Avionics Architectures for Exploration (AAE) project chartered by NASA's Advanced Exploration Systems (AES) Program to evaluate new avionic architectures and technologies, provide objective comparisons of them, and mature selected technologies for flight and for use by other AES projects. Results from the AAE project's FY13 efforts are discussed, along with the status of FY14 efforts and future plans.

  4. Avionics. Progress Record and Theory Outline.

    Science.gov (United States)

    Connecticut State Dept. of Education, Hartford. Div. of Vocational-Technical Schools.

    This combination progress record and course outline is designed for use by individuals teaching a course in avionics that is intended to prepare students for employment in the field of aerospace electronics. Included among the topics addressed in the course are the following: shop practices, aircraft and the theory of flight, electron physics,…

  5. Avionics Instrument Systems Specialist (AFSC 32551).

    Science.gov (United States)

    Miller, Lawrence B.; Crowcroft, Robert A.

    This six-volume student text is designed for use by Air Force personnel enrolled in a self-study extension course for avionics instrument systems specialists. Covered in the individual volumes are career field familiarization (career field progression and training, security, occupational safety and health, and career field reference material);…

  6. COTS Multicore Processors in Avionics Systems: Challenges and Solutions

    Science.gov (United States)

    2015-01-06

    COTS Multicore Processors in Avionics Systems: Challenges and Solutions Dionisio de Niz Bjorn Andersson and Lutz Wrage dionisio@sei.cmu.edu... Avionics Systems: Challenges and Solutions 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Wrage /Dionisio de Niz Bjorn...NVIDIA Tegra K1 platform • Avionics and defense: – Rugged Intel i7 single board computers – Freescale P4080 8-core CPU 4 Shared Hardware: Multicore Memory

  7. Demonstration Advanced Avionics System (DAAS) function description

    Science.gov (United States)

    Bailey, A. J.; Bailey, D. G.; Gaabo, R. J.; Lahn, T. G.; Larson, J. C.; Peterson, E. M.; Schuck, J. W.; Rodgers, D. L.; Wroblewski, K. A.

    1982-01-01

    The Demonstration Advanced Avionics System, DAAS, is an integrated avionics system utilizing microprocessor technologies, data busing, and shared displays for demonstrating the potential of these technologies in improving the safety and utility of general aviation operations in the late 1980's and beyond. Major hardware elements of the DAAS include a functionally distributed microcomputer complex, an integrated data control center, an electronic horizontal situation indicator, and a radio adaptor unit. All processing and display resources are interconnected by an IEEE-488 bus in order to enhance the overall system effectiveness, reliability, modularity and maintainability. A detail description of the DAAS architecture, the DAAS hardware, and the DAAS functions is presented. The system is designed for installation and flight test in a NASA Cessna 402-B aircraft.

  8. Power, Avionics and Software Communication Network Architecture

    Science.gov (United States)

    Ivancic, William D.; Sands, Obed S.; Bakula, Casey J.; Oldham, Daniel R.; Wright, Ted; Bradish, Martin A.; Klebau, Joseph M.

    2014-01-01

    This document describes the communication architecture for the Power, Avionics and Software (PAS) 2.0 subsystem for the Advanced Extravehicular Mobile Unit (AEMU). The following systems are described in detail: Caution Warn- ing and Control System, Informatics, Storage, Video, Audio, Communication, and Monitoring Test and Validation. This document also provides some background as well as the purpose and goals of the PAS project at Glenn Research Center (GRC).

  9. Avionics: The main contributor to innovation in aviation

    NARCIS (Netherlands)

    Theunissen, E.

    2010-01-01

    Avionics refers to Electronic systems used in Aviation, and the word itself is a blend of Aviation and Electronics. Avionics are not only essential for today’s commercial and military aircraft to fly, but also enable their integration into the overall traffic management system. For safety critical a

  10. An Automatic Development Process for Integrated Modular Avionics Software

    Directory of Open Access Journals (Sweden)

    Ying Wang

    2013-05-01

    Full Text Available With the ever-growing avionics functions, the modern avionics architecture is evolving from traditional federated architecture to Integrated Modular Avionics (IMA. ARINC653 is a major industry standard to support partitioning concept introduced in IMA to achieve security isolation between avionics functions with different criticalities. To decrease the complexity and improve the reliability of the design and implementation of IMA-based avionics software, this paper proposes an automatic development process based on Architecture Analysis & Design Language. An automatic model transformation approach from domain-specific models to platform-specific ARINC653 models and safety-critical ARINC653-compliant code generation technology are respectively presented during this process. A simplified multi-task flight application as a case study with preliminary experiment result is given to show the validity of this process.

  11. Optoelectronic Aspects of Avionic Systems II

    Science.gov (United States)

    1975-05-01

    K.C. Trumble of the Information Management Branch (AFAL/AAM). Dr. J.R. Biard was the principal investigator of the program. He was assisted in the...Force Avionics Laboratory, Dr. J.P. Mize, J.E. Shaunfield and J.F. Leezer of Spectronics, Inc., and Dr. K.W. Heizer of Southern Methodist University...Duplex 72 18 Worst Case Power Improvement Factor Radial Duplex/Tapered Duplex 76 19 Scrambler Rod 79 20 Scramber Rod Operation 82 vii -^^^hm

  12. System Framework for the Design of an Avionics Architecture with Upgrade Potential

    OpenAIRE

    2002-01-01

    The technological growth of ‘avionics systems’ has outpaced the service-life of aircraft, resulting in avionics upgrade as a preferred cost-effective option to new design. Mid-life upgrade of “avionics systems“ by state-of-the-art mission systems has been a challenging engineering task. The complexity of avionics upgrade process is due to the design rigidity of avionics systems architecture. An avionics architecture with growth potential is required to optimise avionics upgrade with state-of-...

  13. System Framework for the Design of an Avionics Architecture with Upgrade Potential

    Directory of Open Access Journals (Sweden)

    N. Rao

    2002-01-01

    Full Text Available The technological growth of ‘avionics systems’ has outpaced the service-life of aircraft, resulting in avionics upgrade as a preferred cost-effective option to new design. Mid-life upgrade of “avionics systems“ by state-of-the-art mission systems has been a challenging engineering task. The complexity of avionics upgrade process is due to the design rigidity of avionics systems architecture. An avionics architecture with growth potential is required to optimise avionics upgrade with state-of-the-art systems. A research program that partially addresses avionics systems upgrade by developing a methodology to design an avionics architecture with in-built growth potential is discussed in this research paper. A ‘system approach’ is adopted to develop a methodology that identifies the design parameters that will facilitate design of an avionics architecture with upgrade potential.

  14. Development of Framework for Acquisition of Avionics Integration Capability

    Directory of Open Access Journals (Sweden)

    Fahad RIAZ

    2015-12-01

    Full Text Available With the rapid advancement in electronics technology, in the last three decades Avionics systems, have evolved from standalone single function units to functionally correlated and interdependent systems. To harness the potential of this technological growth in the constraints of time, power and space, the specialty of Avionics Integration has emerged. Avionics Integration Technology is a multi-faceted discipline involving a myriad of activities starting from design conception and concluding on final qualification and acceptance of the avionics suite. Currently, only a few advanced countries worldwide possess this technology and no formal framework has been defined in literature or journals that encompass the range of activities involved in avionics Integration. This paper will present a formal framework required for development of Avionics Integration Capability. It will cover the core skill areas required and their interdependencies. The recognized “V” Development model will be presented with complete identification of Integrator and Sub Contractor roles and responsibilities. For the technical execution of Avionics Integration, specialist domains will be identified along broad definition of required tool sets and work flow of activities to be conducted.

  15. Avionics Applications on a Time-Predictable Chip-Multiprocessor

    DEFF Research Database (Denmark)

    Rocha, André; Silva, Cláudio; Sørensen, Rasmus Bo;

    2016-01-01

    Avionics applications need to be certified for the highest criticality standard. This certification includes schedulability analysis and worst-case execution time (WCET) analysis. WCET analysis is only possible when the software is written to be WCET analyzable and when the platform is time......-predictable. In this paper we present prototype avionics applications that have been ported to the time-predictable T-CREST platform. The applications are WCET analyzable, and T-CREST is supported by the aiT WCET analyzer. This combination allows us to provide WCET bounds of avionic tasks, even when executing on a multicore...

  16. Photonic technology for switched rf avionics networks

    Science.gov (United States)

    Hamilton, Michael C.; Thaniyavarn, Suwat; Abbas, Gregory L.; LaGasse, Michael J.; Traynor, Timothy; Lin, Jack P.

    1997-10-01

    The application of photonics technology in switched RF networks is discussed with emphasis on the benefits for avionics applications. System requirements and performance issues are addressed. A 16 X 16 photonic switch module prototype is described and results for RF fiber-optic links passing through the module are presented. RF channel isolation measured was at least 75 dB. A demonstration is described in which a photonic network using the switch module passed signals from a dynamic electromagnetic environment simulator to two radar warning systems under test. Demonstration modes included simulation of both aperture sharing and processor sharing. Finally, a novel alternative switch module architecture is described that is strictly non-blocking and has inherently better channel isolation.

  17. Tanker avionics and aircrew complement evaluation.

    Science.gov (United States)

    Moss, R W; Barbato, G J

    1982-11-01

    This paper describes an effort to determine control and display criteria for operating SAC's KC-135 tanker with a reduced crew complement. The Tanker Avionics and Aircrew Complement Evaluation (TAACE) Program was a four-phase effort addressing the control and display design issues associated with operating the tanker without the navigator position. Discussed are: the mission analysis phase, during which the tanker's operational responsibilities were defined and documented; the design phase, during which alternative crew station design concepts were developed; the mockup evaluation phase, which accomplished initial SAC crew member assessment of cockpit designs; and the simulation phase, which validated the useability of the crew system redesign. The paper also describes a recommended crew station configuration and discusses some of the philosophy underlying the selection of cockpit hardware and systems.

  18. Affordable Access to Space (AAS): Affordable Vehicle Avionics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Affordable Vehicle Avionics (AVA) is being developed at NASA Ames Research Center and is sponsored by Space Technology Mission Directorate (STMD) Game Changing...

  19. A General Method for Module Automatic Testing in Avionics Systems

    Directory of Open Access Journals (Sweden)

    Li Ma

    2013-05-01

    Full Text Available The traditional Automatic Test Equipment (ATE systems are insufficient to cope with the challenges of testing more and more complex avionics systems. In this study, we propose a general method for module automatic testing in the avionics test platform based on PXI bus. We apply virtual instrument technology to realize the automatic testing and the fault reporting of signal performance. Taking the avionics bus ARINC429 as an example, we introduce the architecture of automatic test system as well as the implementation of algorithms in Lab VIEW. The comprehensive experiments show the proposed method can effectively accomplish the automatic testing and fault reporting of signal performance. It greatly improves the generality and reliability of ATE in avionics systems.

  20. A Model-based Avionic Prognostic Reasoner (MAPR)

    Data.gov (United States)

    National Aeronautics and Space Administration — The Model-based Avionic Prognostic Reasoner (MAPR) presented in this paper is an innovative solution for non-intrusively monitoring the state of health (SoH) and...

  1. Platform Independent Launch Vehicle Avionics with GPS Metric Tracking Project

    Data.gov (United States)

    National Aeronautics and Space Administration — For this award, Tyvak proposes to develop a complete suite of avionics for a Nano-Launch Vehicle (NLV) based on the architecture determinations performed during...

  2. 2013 aircrew, avionics, and operations survey, part 2.

    Science.gov (United States)

    Greene, Michael J

    2013-01-01

    In this second half of a 2-part series, chief/lead pilots were invited to complete a 40-question survey modeled on the AirMed 2000 Helicopter Avionics and Operations Survey via an online survey. The survey was available to rotor-wing (RW) and fixed-wing air medical transport services in the United States, although year 2000 comparative data are RW only. Topics surveyed include flight hours, aircraft models, avionics, interiors, staffing, weather minimums, and maintenance facilities.

  3. Interconnection Optimization for Multi-Cluster Avionics Networks

    OpenAIRE

    2013-01-01

    National audience; The increasing complexity and heterogeneity of avionics networks make resource optimization a challenging task. In contrast to many previous approaches pursuing the optimization of traffic-source mapping and backbone network analysis, our work presented herein mainly focuses on the optimization of interconnection devices for multi-cluster avionics networks. In this paper, we introduce an optimized interconnection device, integrating novel frame packing strategies and schedu...

  4. Evaluation of New European Technologies for Future Avionics

    Science.gov (United States)

    Poupat, Jean-Luc; Chevalier, Laurent; Monchaux, David; Le Meur, Patrick

    2014-08-01

    With the support of CNES DLA as operator, and Airbus DS Space System as architect, Airbus DS Electronics in Elancourt has developed a modular platform to evaluate new technologies for future avionics.This paper presents the Avionic-X project that has initiated this development, the modular platform itself and the status on this activity performed on this evaluation platform which has allowed the use of European technologies such as ARM processing cores or TTEthernet communication bus.

  5. Avionics Architectures for Exploration: Wireless Technologies and Human Spaceflight

    Science.gov (United States)

    Goforth, Montgomery B.; Ratliff, James E.; Barton, Richard J.; Wagner, Raymond S.; Lansdowne, Chatwin

    2014-01-01

    The authors describe ongoing efforts by the Avionics Architectures for Exploration (AAE) project chartered by NASA's Advanced Exploration Systems (AES) Program to evaluate new avionics architectures and technologies, provide objective comparisons of them, and mature selected technologies for flight and for use by other AES projects. The AAE project team includes members from most NASA centers and from industry. This paper provides an overview of recent AAE efforts, with particular emphasis on the wireless technologies being evaluated under AES to support human spaceflight.

  6. A Communication Paradigm for Modular Avionics: The DAPAR Experience

    Science.gov (United States)

    Llorca-Cejudo, Roger; Carayon, Jean-Louis; Autolinos, Luc

    2014-08-01

    The DAPAR avionics paradigm was conceived at CNES as a path to reduce avionics subsystem development costs while, at the same time increasing its modularity and flexibility. A demonstrator system has been constructed based on DAPAR concepts with the objective of studying what are the difficulties/benefits of the approach. This paper describes both the characteristics of the DAPAR paradigm and the lessons learned from the demonstrator system.

  7. Wireless avionics for space applications of fundamental physics

    Science.gov (United States)

    Wang, Linna; Zeng, Guiming

    2016-07-01

    Fundamental physics (FP) research in space relies on a strong support of spacecraft. New types of spacecraft including reusable launch vehicles, reentry space vehicles, long-term on-orbit spacecraft or other new type of spacecraft will pave the way for FP missions. In order to test FP theories in space, flight conditions have to be controlled to a very high precision, data collection and handling abilities have to be improved, real-time and reliable communications in critical environments are needed. These challenge the existing avionics of spacecraft. Avionics consists of guidance, navigation & control, TT&C, the vehicle management, etc. Wireless avionics is one of the enabling technologies to address the challenges. Reasons are expatiated of why it is of great advantage. This paper analyses the demands for wireless avionics by reviewing the FP missions and on-board wireless systems worldwide. Main types of wireless communication are presented. Preliminary system structure of wireless avionics are given. The characteristics of wireless network protocols and wireless sensors are introduced. Key technologies and design considerations for wireless avionics in space applications are discussed.

  8. The Space Technology 5 Avionics System

    Science.gov (United States)

    Speer, Dave; Jackson, George; Stewart, Karen; Hernandez-Pellerano, Amri

    2004-01-01

    The Space Technology 5 (ST5) mission is a NASA New Millennium Program project that will validate new technologies for future space science missions and demonstrate the feasibility of building launching and operating multiple, miniature spacecraft that can collect research-quality in-situ science measurements. The three satellites in the ST5 constellation will be launched into a sun-synchronous Earth orbit in early 2006. ST5 fits into the 25-kilogram and 24-watt class of very small but fully capable spacecraft. The new technologies and design concepts for a compact power and command and data handling (C&DH) avionics system are presented. The 2-card ST5 avionics design incorporates new technology components while being tightly constrained in mass, power and volume. In order to hold down the mass and volume, and quali& new technologies for fUture use in space, high efficiency triple-junction solar cells and a lithium-ion battery were baselined into the power system design. The flight computer is co-located with the power system electronics in an integral spacecraft structural enclosure called the card cage assembly. The flight computer has a full set of uplink, downlink and solid-state recording capabilities, and it implements a new CMOS Ultra-Low Power Radiation Tolerant logic technology. There were a number of challenges imposed by the ST5 mission. Specifically, designing a micro-sat class spacecraft demanded that minimizing mass, volume and power dissipation would drive the overall design. The result is a very streamlined approach, while striving to maintain a high level of capability, The mission's radiation requirements, along with the low voltage DC power distribution, limited the selection of analog parts that can operate within these constraints. The challenge of qualifying new technology components for the space environment within a short development schedule was another hurdle. The mission requirements also demanded magnetic cleanliness in order to reduce

  9. Design and Realization of Avionics Integration Simulation System Based on RTX

    Directory of Open Access Journals (Sweden)

    Wang Liang

    2016-01-01

    Full Text Available Aircraft avionics system becoming more and more complicated, it is too hard to test and verify real avionics systems. A design and realization method of avionics integration simulation system based on RTX was brought forward to resolve the problem. In this simulation system, computer software and hardware resources were utilized entirely. All kinds of aircraft avionics system HIL (hardware-in-loop simulations can be implemented in this platform. The simulation method provided the technical foundation of testing and verifying real avionics system. The research has recorded valuable data using the newly-developed method. The experiment results prove that the avionics integration simulation system was used well in some helicopter avionics HIL simulation experiment. The simulation experiment results provided the necessary judgment foundation for the helicopter real avionics system verification.

  10. Validating Avionics Conceptual Architectures with Executable Specifications

    Directory of Open Access Journals (Sweden)

    Nils Fischer

    2012-08-01

    Full Text Available Current avionics systems specifications, developed after conceptual design, have a high degree of uncertainty. Since specifications are not sufficiently validated in the early development process and no executable specification exists at aircraft level, system designers cannot evaluate the impact of their design decisions at aircraft or aircraft application level. At the end of the development process of complex systems, e. g. aircraft, an average of about 65 per cent of all specifications have to be changed because they are incorrect, incomplete or too vaguely described. In this paper, a model-based design methodology together with a virtual test environment is described that makes complex high level system specifications executable and testable during the very early levels of system design. An aircraft communication system and its system context is developed to demonstrate the proposed early validation methodology. Executable specifications for early conceptual system architectures enable system designers to couple functions, architecture elements, resources and performance parameters, often called non-functional parameters. An integrated executable specification at Early Conceptual Architecture Level is developed and used to determine the impact of different system architecture decisions on system behavior and overall performance.

  11. Design and Realization of Avionics Integration Simulation System Based on RTX

    OpenAIRE

    2016-01-01

    Aircraft avionics system becoming more and more complicated, it is too hard to test and verify real avionics systems. A design and realization method of avionics integration simulation system based on RTX was brought forward to resolve the problem. In this simulation system, computer software and hardware resources were utilized entirely. All kinds of aircraft avionics system HIL (hardware-in-loop) simulations can be implemented in this platform. The simulation method provided the technical f...

  12. Defense Acquisitions: Assessment of Institute for Defense Analyses C-130 Avionics Modernization Program Analysis

    Science.gov (United States)

    2014-05-29

    Page 1 GAO-14-547R C-130 Avionics Modernization Program 441 G St. N.W. Washington, DC 20548 May 29, 2014...Congressional Committees Defense Acquisitions: Assessment of Institute for Defense Analyses’ C-130 Avionics Modernization Program Analysis The Air...Force’s C-130 Avionics Modernization Program (AMP), which entered development in 2001, was to standardize and upgrade the cockpit and avionics for

  13. NASA Affordable Vehicle Avionics (AVA): Common Modular Avionics System for Nano-Launchers Offering Affordable Access to Space

    Science.gov (United States)

    Cockrell, James

    2015-01-01

    Small satellites are becoming ever more capable of performing valuable missions for both government and commercial customers. However, currently these satellites can only be launched affordably as secondary payloads. This makes it difficult for the small satellite mission to launch when needed, to the desired orbit, and with acceptable risk. NASA Ames Research Center has developed and tested a prototype low-cost avionics package for space launch vehicles that provides complete GNC functionality in a package smaller than a tissue box with a mass less than 0.84 kg. AVA takes advantage of commercially available, low-cost, mass-produced, miniaturized sensors, filtering their more noisy inertial data with realtime GPS data. The goal of the Advanced Vehicle Avionics project is to produce and flight-verify a common suite of avionics and software that deliver affordable, capable GNC and telemetry avionics with application to multiple nano-launch vehicles at 1 the cost of current state-of-the-art avionics.

  14. Heavy Lift Vehicle (HLV) Avionics Flight Computing Architecture Study

    Science.gov (United States)

    Hodson, Robert F.; Chen, Yuan; Morgan, Dwayne R.; Butler, A. Marc; Sdhuh, Joseph M.; Petelle, Jennifer K.; Gwaltney, David A.; Coe, Lisa D.; Koelbl, Terry G.; Nguyen, Hai D.

    2011-01-01

    A NASA multi-Center study team was assembled from LaRC, MSFC, KSC, JSC and WFF to examine potential flight computing architectures for a Heavy Lift Vehicle (HLV) to better understand avionics drivers. The study examined Design Reference Missions (DRMs) and vehicle requirements that could impact the vehicles avionics. The study considered multiple self-checking and voting architectural variants and examined reliability, fault-tolerance, mass, power, and redundancy management impacts. Furthermore, a goal of the study was to develop the skills and tools needed to rapidly assess additional architectures should requirements or assumptions change.

  15. Impact of Advanced Avionics Technology on Ground Attack Weapon Systems.

    Science.gov (United States)

    1982-02-01

    cette cat~gorie distinguer encore plusicurs cas - L’autodirecteur est semi- actif , c’est-A-dire qu’il n~cessite une illumination de l’objectif. Cette...coiae Ions d’une acquisition directe par un capteur aur l’avion. L’autonomie accrue des armements, s’accunpagne donc d’une plus grande pr~paration des...dsnt - se servir des autres avions d’attaque cocme autant de capteurs intdgr~s dana un dispositif coop~ratif. En dehors des besoins ds performances

  16. Enabling Wireless Avionics Intra-Communications

    Science.gov (United States)

    Torres, Omar; Nguyen, Truong; Mackenzie, Anne

    2016-01-01

    to model the propagation of a system in a "deployed" configuration versus a "stowed" configuration. The differences in relative field strength provide valuable information about the distribution of the field that can be used to engineer RF links with optimal radiated power and antenna configuration that accomplish the intended system reliability. Such modeling will be necessary in subsequent studies for managing multipath propagation characteristics inside a main cabin and to understand more complex environments, such as the inside wings, landing gear bays, cargo bays, avionics bays, etc. The results of the short research effort are described in the present document. The team puts forth a set of recommendations with the intention of informing the project and program leadership of the future work that, in the opinion of the EWAIC team, would assist the ECON team reach the intended goal of developing an all-wireless aircraft.

  17. Low-Cost Avionics Simulation for Aircrew Training.

    Science.gov (United States)

    Edwards, Bernell J.

    This report documents an experiment to determine the training effectiveness of a microcomputer-based avionics system trainer as a cost-effective alternative to training in the actual aircraft. Participants--26 operationally qualified C-141 pilots with no prior knowledge of the Fuel Saving Advisory System (FSAS), a computerized fuel management…

  18. Wavelength and fiber assignment problems on avionic networks

    DEFF Research Database (Denmark)

    Zhang, Jiang; An, Yi; Berger, Michael Stübert;

    2011-01-01

    This paper solves the wavelength and fiber assignment problems with systems' isolation requirements on the avionic ring networks. The experiment results give a general glace of the numbers of the wavelengths and fibers are required under certain scale of networks. At the beginning of increasing...

  19. Avionics Technology Contract Project Report Phase I with Research Findings.

    Science.gov (United States)

    Sappe', Hoyt; Squires, Shiela S.

    This document reports on Phase I of a project that examined the occupation of avionics technician, established appropriate committees, and conducted task verification. Results of this phase provide the basic information required to develop the program standards and to guide and set up the committee structure to guide the project. Section 1…

  20. Prediction Tables for Avionics Fundamentals Course, Class A.

    Science.gov (United States)

    Baldwin, Robert O.; Johnson, Kirk A.

    This study was conducted in 1966 to provide the avionics fundamentals course, class A, with a number of tables for predicting academic performance, either by precourse variables or by grades made early in the course. A means of identifying potential setbacks and potential failures was also desired. In September 1966 a 16 week course replaced the…

  1. Current state of OLED technology relative to military avionics requirements

    Science.gov (United States)

    Tchon, Joseph L.; Barnidge, Tracy J.; Hufnagel, Bruce D.; Bahadur, Birendra

    2014-06-01

    The paper will review optical and environmental performance thresholds required for OLED technology to be used on various military platforms. Life study results will be summarized to highlight trends while identifying remaining performance gaps to make this technology viable for future military avionics platforms.

  2. Digital Avionics Information System (DAIS): Training Requirements Analysis Model (TRAMOD).

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    The training requirements analysis model (TRAMOD) described in this report represents an important portion of the larger effort called the Digital Avionics Information System (DAIS) Life Cycle Cost (LCC) Study. TRAMOD is the second of three models that comprise an LCC impact modeling system for use in the early stages of system development. As…

  3. NextGen Avionics Roadmap, Version 1.2

    Science.gov (United States)

    2010-09-21

    recreation and some for business, or a combi - nation. These aircraft have a wide range of capability and operate below 18,000 ft, with the majority...Dharmesh Patel Honeywell Art Politano FAA Trent Prange FAA Jean -Claude Richard Thales Avionics Brian E. Smith NASA Scott Stevens FAA John Schwoyer FAA

  4. Avionics Configuration Assessment for Flightdeck Interval Management: A Comparison of Avionics and Notification Methods

    Science.gov (United States)

    Latorella, Kara A.

    2015-01-01

    Flightdeck Interval Management is one of the NextGen operational concepts that FAA is sponsoring to realize requisite National Airspace System (NAS) efficiencies. Interval Management will reduce variability in temporal deviations at a position, and thereby reduce buffers typically applied by controllers - resulting in higher arrival rates, and more efficient operations. Ground software generates a strategic schedule of aircraft pairs. Air Traffic Control (ATC) provides an IM clearance with the IM spacing objective (i.e., the TTF, and at which point to achieve the appropriate spacing from this aircraft) to the IM aircraft. Pilots must dial FIM speeds into the speed window on the Mode Control Panel in a timely manner, and attend to deviations between actual speed and the instantaneous FIM profile speed. Here, the crew is assumed to be operating the aircraft with autothrottles on, with autopilot engaged, and the autoflight system in Vertical Navigation (VNAV) and Lateral Navigation (LNAV); and is responsible for safely flying the aircraft while maintaining situation awareness of their ability to follow FIM speed commands and to achieve the FIM spacing goal. The objective of this study is to examine whether three Notification Methods and four Avionics Conditions affect pilots' performance, ratings on constructs associated with performance (workload, situation awareness), or opinions on acceptability. Three Notification Methods (alternate visual and aural alerts that notified pilots to the onset of a speed target, conformance deviation from the required speed profile, and reminded them if they failed to enter the speed within 10 seconds) were examined. These Notification Methods were: VVV (visuals for all three events), VAV (visuals for all three events, plus an aural for speed conformance deviations), and AAA (visual indications and the same aural to indicate all three of these events). Avionics Conditions were defined by the instrumentation (and location) used to

  5. Avionics and airframe options: current usage and future plans.

    Science.gov (United States)

    Mayfield, T; Cady, G

    1994-01-01

    The 1994 Avionics and Airframe Survey was sent to 178 chief or lead pilots of helicopter emergency medical services (HEMS) programs in October 1993, and 100 (56%) were returned. Sixty-four programs (64%) reported that they operate one helicopter exclusively for EMS, 24 (24%) operate two, and 12 (12%) reported using three or more aircraft. Interestingly, the reported percentage of programs with two or more exclusive helicopters continues to rise, increasing by 5.6% to 36%.

  6. Comparison of Communication Architectures for Spacecraft Modular Avionics Systems

    Science.gov (United States)

    Gwaltney, D. A.; Briscoe, J. M.

    2006-01-01

    This document is a survey of publicly available information concerning serial communication architectures used, or proposed to be used, in aeronautic and aerospace applications. It focuses on serial communication architectures that are suitable for low-latency or real-time communication between physically distributed nodes in a system. Candidates for the study have either extensive deployment in the field, or appear to be viable for near-term deployment. Eleven different serial communication architectures are considered, and a brief description of each is given with the salient features summarized in a table in appendix A. This survey is a product of the Propulsion High Impact Avionics Technology (PHIAT) Project at NASA Marshall Space Flight Center (MSFC). PHIAT was originally funded under the Next Generation Launch Technology (NGLT) Program to develop avionics technologies for control of next generation reusable rocket engines. After the announcement of the Space Exploration Initiative, the scope of the project was expanded to include vehicle systems control for human and robotics missions. As such, a section is included presenting the rationale used for selection of a time-triggered architecture for implementation of the avionics demonstration hardware developed by the project team

  7. ARINC 818 specification revisions enable new avionics architectures

    Science.gov (United States)

    Grunwald, Paul

    2014-06-01

    The ARINC 818 Avionics Digital Video Bus is the standard for cockpit video that has gained wide acceptance in both the commercial and military cockpits. The Boeing 787, A350XWB, A400M, KC-46A, and many other aircraft use it. The ARINC 818 specification, which was initially release in 2006, has recently undergone a major update to address new avionics architectures and capabilities. Over the seven years since its release, projects have gone beyond the specification due to the complexity of new architectures and desired capabilities, such as video switching, bi-directional communication, data-only paths, and camera and sensor control provisions. The ARINC 818 specification was revised in 2013, and ARINC 818-2 was approved in November 2013. The revisions to the ARINC 818-2 specification enable switching, stereo and 3-D provisions, color sequential implementations, regions of interest, bi-directional communication, higher link rates, data-only transmission, and synchronization signals. This paper discusses each of the new capabilities and the impact on avionics and display architectures, especially when integrating large area displays, stereoscopic displays, multiple displays, and systems that include a large number of sensors.

  8. OMAC4S- Open Modular Avionics for Space Applications

    Science.gov (United States)

    Herpel, H.-J.; Willich, G.; Vogel, T.; Schuettauf, A.; Pletner, S.; Schoen, F.; Fidi, C.; Loetzke, M.; Dittrich, L.; Schuelke, P.; Wolf, T.

    2013-08-01

    Today's spacecraft avionics architecture is characterised by a broad variety of processing modules, operating systems and interfaces for exchanging data between different processing modules. The software that implements most of the satellite functionality has to deal with this fact and is one of the reasons why software has become one of the major cost drivers in satellite projects. Similar problems have triggered developments in other industrial domains like AUTOSAR in the automotive area or Integrated Modular Architecture (IMA) in the aerospace industry [8]. All these initiatives are based on the definition of standards for computing platforms and the interfaces between these platforms. The goals of the Open Modular Avionics Architecture for Space Applications (OMAC4S) initiative started by Astrium, Fraunhofer FOKUS, STI, SYSGO and TTTech are to outline a solution that helps to reduce complexity and costs for space avionics significantly. This initiative is partly funded by the German national space agency (DLR) through the project On-Board Computer System Architecture (OBC-SA). In this paper we describe how standardization and the usage of already proven technologies from other industrial domains will help to limit the effect of the software development on schedule and costs of satellite projects. In addition we will demonstrate a migration path to make these technologies available for space applications.

  9. Avionics Architectures for Exploration: Ongoing Efforts in Human Spaceflight

    Science.gov (United States)

    Goforth, Montgomery B.; Ratliff, James E.; Hames, Kevin L.; Vitalpur, Sharada V.; Woodman, Keith L.

    2014-01-01

    The field of Avionics is advancing far more rapidly in terrestrial applications than in spaceflight applications. Spaceflight Avionics are not keeping pace with expectations set by terrestrial experience, nor are they keeping pace with the need for increasingly complex automation and crew interfaces as we move beyond Low Earth Orbit. NASA must take advantage of the strides being made by both space-related and terrestrial industries to drive our development and sustaining costs down. This paper describes ongoing efforts by the Avionics Architectures for Exploration (AAE) project chartered by NASA's Advanced Exploration Systems (AES) Program to evaluate new avionic architectures and technologies, provide objective comparisons of them, and mature selected technologies for flight and for use by other AES projects. The AAE project team includes members from most NASA centers, and from industry. It is our intent to develop a common core avionic system that has standard capabilities and interfaces, and contains the basic elements and functionality needed for any spacecraft. This common core will be scalable and tailored to specific missions. It will incorporate hardware and software from multiple vendors, and be upgradeable in order to infuse incremental capabilities and new technologies. It will maximize the use of reconfigurable open source software (e.g., Goddard Space Flight Center's (GSFC's) Core Flight Software (CFS)). Our long-term focus is on improving functionality, reliability, and autonomy, while reducing size, weight, and power. Where possible, we will leverage terrestrial commercial capabilities to drive down development and sustaining costs. We will select promising technologies for evaluation, compare them in an objective manner, and mature them to be available for future programs. The remainder of this paper describes our approach, technical areas of emphasis, integrated test experience and results as of mid-2014, and future plans. As a part of the AES

  10. Electronics Principles Avionics Aerospace Ground Equipment (AGE) Career Ladder AFSCS 326X0A, B, C, D.

    Science.gov (United States)

    1976-12-27

    This report summarizes the results of the administration of the Electronics Principles survey to airmen assigned to the Avionics Aerospace Ground Equipment (AGE) specialties, including 326XOA, Manually Operated Avionics AGE; 326XOB, Automatic Avionics AGE; 326XOC, F/RF-4 Peculiar AGE, and 326XOD, A-7D Avionics AGE. The report gives a detailed listing of the technical tasks and knowledge needed to

  11. Digital Avionics Information System (DAIS): Impact of DAIS Concept on Life Cycle Cost. Final Report.

    Science.gov (United States)

    Goclowski, John C.; And Others

    Designed to identify and quantify the potential impacts of the Digital Avionics Information System (DAIS) on weapon system personnel requirements and life cycle cost (LCC), this study postulated a typical close-air-support (CAS) mission avionics suite to serve as a basis for comparing present day and DAIS configuration specifications. The purpose…

  12. Digital Avionics Information System (DAIS): Reliability and Maintainability Model. Final Report.

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    The reliability and maintainability (R&M) model described in this report represents an important portion of a larger effort called the Digital Avionics Information System (DAIS) Life Cycle Cost (LCC) Study. The R&M model is the first of three models that comprise a modeling system for use in LCC analysis of avionics systems. The total…

  13. Digital Avionics Information System Preliminary Life-Cycle-Cost Analysis. Final Report (November 1974-May 1975).

    Science.gov (United States)

    Pruitt, Gary K.; Dieterly, Duncan L.

    The results of a study to evaluate the potential life-cycle costs and cost savings that could be realized by applying the Digital Avionics Information System (DAIS) concept to future avionic systems were presented. The tasks evaluated included selection of program elements for costing, selection of DAIS installation potential, definition of a…

  14. ISHM-oriented adaptive fault diagnostics for avionics based on a distributed intelligent agent system

    Science.gov (United States)

    Xu, Jiuping; Zhong, Zhengqiang; Xu, Lei

    2015-10-01

    In this paper, an integrated system health management-oriented adaptive fault diagnostics and model for avionics is proposed. With avionics becoming increasingly complicated, precise and comprehensive avionics fault diagnostics has become an extremely complicated task. For the proposed fault diagnostic system, specific approaches, such as the artificial immune system, the intelligent agents system and the Dempster-Shafer evidence theory, are used to conduct deep fault avionics diagnostics. Through this proposed fault diagnostic system, efficient and accurate diagnostics can be achieved. A numerical example is conducted to apply the proposed hybrid diagnostics to a set of radar transmitters on an avionics system and to illustrate that the proposed system and model have the ability to achieve efficient and accurate fault diagnostics. By analyzing the diagnostic system's feasibility and pragmatics, the advantages of this system are demonstrated.

  15. Fiber-Optic Network Architectures for Onboard Avionics Applications Investigated

    Science.gov (United States)

    Nguyen, Hung D.; Ngo, Duc H.

    2003-01-01

    This project is part of a study within the Advanced Air Transportation Technologies program undertaken at the NASA Glenn Research Center. The main focus of the program is the improvement of air transportation, with particular emphasis on air transportation safety. Current and future advances in digital data communications between an aircraft and the outside world will require high-bandwidth onboard communication networks. Radiofrequency (RF) systems, with their interconnection network based on coaxial cables and waveguides, increase the complexity of communication systems onboard modern civil and military aircraft with respect to weight, power consumption, and safety. In addition, safety and reliability concerns from electromagnetic interference between the RF components embedded in these communication systems exist. A simple, reliable, and lightweight network that is free from the effects of electromagnetic interference and capable of supporting the broadband communications needs of future onboard digital avionics systems cannot be easily implemented using existing coaxial cable-based systems. Fiber-optical communication systems can meet all these challenges of modern avionics applications in an efficient, cost-effective manner. The objective of this project is to present a number of optical network architectures for onboard RF signal distribution. Because of the emergence of a number of digital avionics devices requiring high-bandwidth connectivity, fiber-optic RF networks onboard modern aircraft will play a vital role in ensuring a low-noise, highly reliable RF communication system. Two approaches are being used for network architectures for aircraft onboard fiber-optic distribution systems: a hybrid RF-optical network and an all-optical wavelength division multiplexing (WDM) network.

  16. Intelligent Cost Modeling Based on Soft Computing for Avionics Systems

    Institute of Scientific and Technical Information of China (English)

    ZHU Li-li; LI Zhuang-sheng; XU Zong-ze

    2006-01-01

    In parametric cost estimating, objections to using statistical Cost Estimating Relationships (CERs) and parametric models include problems of low statistical significance due to limited data points, biases in the underlying data, and lack of robustness. Soft Computing (SC) technologies are used for building intelligent cost models. The SC models are systemically evaluated based on their training and prediction of the historical cost data of airborne avionics systems. Results indicating the strengths and weakness of each model are presented. In general, the intelligent cost models have higher prediction precision, better data adaptability, and stronger self-learning capability than the regression CERs.

  17. Extravehicular Activity (EVA) Power, Avionics, and Software (PAS) 101

    Science.gov (United States)

    Irimies, David

    2011-01-01

    EVA systems consist of a spacesuit or garment, a PLSS, a PAS system, and spacesuit interface hardware. The PAS system is responsible for providing power for the suit, communication of several types of data between the suit and other mission assets, avionics hardware to perform numerous data display and processing functions, and information systems that provide crewmembers data to perform their tasks with more autonomy and efficiency. Irimies discussed how technology development efforts have advanced the state-of-the-art in these areas and shared technology development challenges.

  18. MultIMA- Multi-Core in Integrated Modular Avionics

    Science.gov (United States)

    Silva, Claudio; Tatibana, Cassia

    2014-08-01

    Multi-core technologies are the natural trend towards fulfilling recent space applications requirements. However, the adoption of multi-core implies increased complexity that must be addressed by application redesign or the implementation of explicit supporting mechanisms. GMV investigates multi-core and Integrated Modular Avionics as cooperative vehicles to achieve reliable support for future safety critical applications. In this paper, we describe the main challenges met in our investigations and how multi-core solutions were implemented in GMV's IMA simulator (SIMA) and operating system (AIR).

  19. IXV avionics architecture: Design, qualification and mission results

    Science.gov (United States)

    Succa, Massimo; Boscolo, Ilario; Drocco, Alessandro; Malucchi, Giovanni; Dussy, Stephane

    2016-07-01

    The paper details the IXV avionics presenting the architecture and the constituting subsystems and equipment. It focuses on the novelties introduced, such as the Ethernet-based protocol for the experiment data acquisition system, and on the synergy with Ariane 5 and Vega equipment, pursued in order to comply with the design-to-cost requirement for the avionics system development. Emphasis is given to the adopted model philosophy in relation to OTS/COTS items heritage and identified activities necessary to extend the qualification level to be compliant with the IXV environment. Associated lessons learned are identified. Then, the paper provides the first results and interpretation from the flight recorders telemetry, covering the behavior of the Data Handling System, the quality of telemetry recording and real-time/delayed transmission, the performance of the batteries and the Power Protection and Distribution Unit, the ground segment coverage during visibility windows and the performance of the GNC sensors (IMU and GPS) and actuators. Finally, some preliminary tracks of the IXV follow on are given, introducing the objectives of the Innovative Space Vehicle and the necessary improvements to be developed in the frame of PRIDE.

  20. Integrated Modular Avionics for Spacecraft: Earth Observation Use Case Demonstrator

    Science.gov (United States)

    Deredempt, Marie-Helene; Rossignol, Alain; Hyounet, Philippe

    2013-08-01

    Integrated Modular Avionics (IMA) for Space, as European Space Agency initiative, aimed to make applicable to space domain the time and space partitioning concepts and particularly the ARINC 653 standard [1][2]. Expected benefits of such an approach are development flexibility, capability to provide differential V&V for different criticality level functionalities and to integrate late or In-Orbit delivery. This development flexibility could improve software subcontracting, industrial organization and software reuse. Time and space partitioning technique facilitates integration of software functions as black boxes and integration of decentralized function such as star tracker in On Board Computer to save mass and power by limiting electronics resources. In aeronautical domain, Integrated Modular Avionics architecture is based on a network of LRU (Line Replaceable Unit) interconnected by AFDX (Avionic Full DupleX). Time and Space partitioning concept is applicable to LRU and provides independent partitions which inter communicate using ARINC 653 communication ports. Using End System (LRU component) intercommunication between LRU is managed in the same way than intercommunication between partitions in LRU. In such architecture an application developed using only communication port can be integrated in an LRU or another one without impacting the global architecture. In space domain, a redundant On Board Computer controls (ground monitoring TM) and manages the platform (ground command TC) in terms of power, solar array deployment, attitude, orbit, thermal, maintenance, failure detection and recovery isolation. In addition, Payload units and platform units such as RIU, PCDU, AOCS units (Star tracker, Reaction wheels) are considered in this architecture. Interfaces are mainly realized through MIL-STD-1553B busses and SpaceWire and this could be considered as the main constraint for IMA implementation in space domain. During the first phase of IMA SP project, ARINC653

  1. Model-based robustness testing for avionics-embedded software

    Institute of Scientific and Technical Information of China (English)

    Yang Shunkun; Liu Bin; Wang Shihai; Lu Minyan

    2013-01-01

    Robustness testing for safety-critical embedded software is still a challenge in its nascent stages.In this paper,we propose a practical methodology and implement an environment by employing model-based robustness testing for embedded software systems.It is a system-level black-box testing approach in which the fault behaviors of embedded software is triggered with the aid of modelbased fault injection by the support of an executable model-driven hardware-in-loop (HIL) testing environment.The prototype implementation of the robustness testing environment based on the proposed approach is experimentally discussed and illustrated by industrial case studies based on several avionics-embedded software systems.The results show that our proposed and implemented robustness testing method and environment are effective to find more bugs,and reduce burdens of testing engineers to enhance efficiency of testing tasks,especially for testing complex embedded systems.

  2. Estimation of Airline Benefits from Avionics Upgrade under Preferential Merge Re-sequence Scheduling

    Science.gov (United States)

    Kotegawa, Tatsuya; Cayabyab, Charlene Anne; Almog, Noam

    2013-01-01

    Modernization of the airline fleet avionics is essential to fully enable future technologies and procedures for increasing national airspace system capacity. However in the current national airspace system, system-wide benefits gained by avionics upgrade are not fully directed to aircraft/airlines that upgrade, resulting in slow fleet modernization rate. Preferential merge re-sequence scheduling is a best-equipped-best-served concept designed to incentivize avionics upgrade among airlines by allowing aircraft with new avionics (high-equipped) to be re-sequenced ahead of aircraft without the upgrades (low-equipped) at enroute merge waypoints. The goal of this study is to investigate the potential benefits gained or lost by airlines under a high or low-equipped fleet scenario if preferential merge resequence scheduling is implemented.

  3. Flexible Low Cost Avionics for NanoSatellite Launch Vehicle Control and GPS Metric Tracking Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In this proposal, Tyvak Nano-Satellite Systems LLC (Tyvak) will develop nano-launch vehicle avionics solutions based on the latest commercial electronics products...

  4. 78 FR 68687 - Final Additional Airworthiness Design Standards: Advanced Avionics Under the Special Class (JAR...

    Science.gov (United States)

    2013-11-15

    ... Administration 14 CFR Part 21 Final Additional Airworthiness Design Standards: Advanced Avionics Under the... document is an issuance of the final airworthiness design criteria for the inclusion of advance...

  5. The development process for the space shuttle primary avionics software system

    Science.gov (United States)

    Keller, T. W.

    1987-01-01

    Primary avionics software system; software development approach; user support and problem diagnosis; software releases and configuration; quality/productivity programs; and software development/production facilities are addressed. Also examined are the external evaluations of the IBM process.

  6. Flight Deck Interval Management Avionics: Eye-Tracking Analysis

    Science.gov (United States)

    Latorella, Kara; Harden, John W.

    2015-01-01

    Interval Management (IM) is one NexGen method for achieving airspace efficiencies. In order to initiate IM procedures, Air Traffic Control provides an IM clearance to the IM aircraft's pilots that indicates an intended spacing from another aircraft (the target to follow - or TTF) and the point at which this should be achieved. Pilots enter the clearance in the flight deck IM (FIM) system; and once the TTF's Automatic Dependent Surveillance-Broadcast signal is available, the FIM algorithm generates target speeds to meet that IM goal. This study examined four Avionics Conditions (defined by the instrumentation and location presenting FIM information) and three Notification Methods (defined by the visual and aural alerts that notified pilots to IM-related events). Current commercial pilots flew descents into Dallas/Fort-Worth in a high-fidelity commercial flight deck simulation environment with realistic traffic and communications. All 12 crews experienced each Avionics Condition, where order was counterbalanced over crews. Each crew used only one of the three Notification Methods. This paper presents results from eye tracking data collected from both pilots, including: normalized number of samples falling within FIM displays, normalized heads-up time, noticing time, dwell time on first FIM display look after a new speed, a workload-related metric, and a measure comparing the scan paths of pilot flying and pilot monitoring; and discusses these in the context of other objective (vertical and speed profile deviations, response time to dial in commanded speeds, out-of-speed-conformance and reminder indications) and subjective measures (workload, situation awareness, usability, and operational acceptability).

  7. Organization and use of a Software/Hardware Avionics Research Program (SHARP)

    Science.gov (United States)

    Karmarkar, J. S.; Kareemi, M. N.

    1975-01-01

    The organization and use is described of the software/hardware avionics research program (SHARP) developed to duplicate the automatic portion of the STOLAND simulator system, on a general-purpose computer system (i.e., IBM 360). The program's uses are: (1) to conduct comparative evaluation studies of current and proposed airborne and ground system concepts via single run or Monte Carlo simulation techniques, and (2) to provide a software tool for efficient algorithm evaluation and development for the STOLAND avionics computer.

  8. Space Shuttle Program Primary Avionics Software System (PASS) Success Legacy - Quality and Reliability Date

    Science.gov (United States)

    Orr, James K.; Peltier, Daryl

    2010-01-01

    Thsi slide presentation reviews the avionics software system on board the space shuttle, with particular emphasis on the quality and reliability. The Primary Avionics Software System (PASS) provides automatic and fly-by-wire control of critical shuttle systems which executes in redundant computers. Charts given show the number of space shuttle flights vs time, PASS's development history, and other charts that point to the reliability of the system's development. The reliability of the system is also compared to predicted reliability.

  9. Semiautonomous Avionics-and-Sensors System for a UAV

    Science.gov (United States)

    Shams, Qamar

    2006-01-01

    Unmanned Aerial Vehicles (UAVs) autonomous or remotely controlled pilotless aircraft have been recently thrust into the spotlight for military applications, for homeland security, and as test beds for research. In addition to these functions, there are many space applications in which lightweight, inexpensive, small UAVS can be used e.g., to determine the chemical composition and other qualities of the atmospheres of remote planets. Moreover, on Earth, such UAVs can be used to obtain information about weather in various regions; in particular, they can be used to analyze wide-band acoustic signals to aid in determining the complex dynamics of movement of hurricanes. The Advanced Sensors and Electronics group at Langley Research Center has developed an inexpensive, small, integrated avionics-and-sensors system to be installed in a UAV that serves two purposes. The first purpose is to provide flight data to an AI (Artificial Intelligence) controller as part of an autonomous flight-control system. The second purpose is to store data from a subsystem of distributed MEMS (microelectromechanical systems) sensors. Examples of these MEMS sensors include humidity, temperature, and acoustic sensors, plus chemical sensors for detecting various vapors and other gases in the environment. The critical sensors used for flight control are a differential- pressure sensor that is part of an apparatus for determining airspeed, an absolute-pressure sensor for determining altitude, three orthogonal accelerometers for determining tilt and acceleration, and three orthogonal angular-rate detectors (gyroscopes). By using these eight sensors, it is possible to determine the orientation, height, speed, and rates of roll, pitch, and yaw of the UAV. This avionics-and-sensors system is shown in the figure. During the last few years, there has been rapid growth and advancement in the technological disciplines of MEMS, of onboard artificial-intelligence systems, and of smaller, faster, and

  10. High Performance Interconnection Technology in Avionics (Short Communication

    Directory of Open Access Journals (Sweden)

    C. R. Raghunath

    2011-07-01

    Full Text Available Avionics subsystems continue to get smaller and more functional, driving the total circuit package itself to become denser, causing the printed wiring board (PWB to evolve new laminates to meet these needs. There is a continuous scope for improvement to match the requirement of wireability demand from high density and high speed integrated circuits. Development of control processing units and rapid expansion of memory device capabilities were realised by the development of large-scale integrated circuits and other electronic devices with higher integration and with new functionalities. Enormous efforts have been put on the development of the system-on-chip (SOC, where a single semiconductor chip constituting complete system is bonded on substrate. These innovations in packaging technology made a big impact on laminates used in printed circuit boards. Aircraft systems are expected to withstand disturbances due to unexpected threats. Under such situations, passengers' safety, emergency landing and timely information to pilot become of paramount importance, hence, new innovative laminate systems are being developed. Various aspects of laminates and the current developments that are taking place are facilitating scientists and engineers in selecting appropriate laminate systems, have been discussed.Defence Science Journal, 2011, 61(4, pp.354-363, DOI:http://dx.doi.org/10.14429/dsj.61.1085

  11. Optimal Configuration of Virtual Links for Avionics Network Systems

    Directory of Open Access Journals (Sweden)

    Dongha An

    2015-01-01

    Full Text Available As the bandwidth and scalability constraints become important design concerns in airborne networks, a new technology, called Avionics Full Duplex Switched Ethernet (AFDX, has been introduced and standardized as a part 7 in ARNIC 664. However, since previous research interests for AFDX are mainly bounded for analyzing the response time where flows information is given, configuration problem for both Maximum Transmission Unit (MTU and Bandwidth Allocation Gap (BAG over virtual links in AFDX networks has not been addressed yet even though it has great impact on required bandwidth. Thus, in this paper, we present two configuration approaches to set MTU and BAG values on virtual links efficiently while meeting the requirement of AFDX. The first is to search available feasible configuration (MTU, BAG pairs to satisfy application requirements as well as AFDX switch constraints, and the second is to get an optimal pair to minimize required bandwidth through well-known branch-and-bound algorithm. We analyze the complexity of the proposed algorithm and then evaluate the proposed algorithm by simulation. Finally, we prove that the proposed schemes are superior to general approach in the aspects of speed and required bandwidth in AFDX networks.

  12. The Cognitive Pilot Helmet: enabling pilot-aware smart avionics

    Science.gov (United States)

    Schnell, Thomas; Melzer, James E.; Robbins, Steve J.

    2009-05-01

    We hypothesize that human-aware helmet display systems can drastically improve situation awareness (SA), reduce workload, and become the cognitive gateway to two-way human-systems information. We designed a ruggedized prototype helmet liner that was fitted with active electroencephalogram (EEG) electrodes and pulse oxymetry sensor. This liner was integrated into a helmet that was fitted with a binocular SR-100A helmet mounted display. We modified the SR-100A to include dual-eye tracking capability. The resulting system is able to pick up physiological signals from the wearer in real-time for cognitive state characterization by the Cognitive Avionics Tool Set (CATS). We conducted a preliminary test of the cognitive state estimation system in a simulated close-air-support task in the laboratory and found that workload throughout the mission could be gauged using physiological parameters. Cognitively-linked helmet systems can increase situation awareness by metering the amount of information based on available cognitive bandwidth and eventually, we feel that they will be able to provide anticipatory information to the user by means of cognitive intent recognition. Considerable design challenges lie ahead to create robust models of cognitive state characterization and intent recognition. However, the rewards of such efforts could be systems that allow a dramatic increase in human decision making ability and productivity in dynamical complex situations such as air combat or surface warfare.

  13. SAR Aircrew--HH-3F Avionics and HH-3F Flight Preparation. ACH3AV-0442. Second Edition, Revised.

    Science.gov (United States)

    Coast Guard Inst., Oklahoma City, OK.

    This document contains two U.S. Coast Guard self-study pamphlets that provide training in helicopter flight preparation and avionics duties. Each pamphlet consists of a number of lessons that include objectives, information illustrated with line drawings and/or photographs, and self-quizzes with answers. The avionics course covers the following…

  14. Society of Automotive Engineers AS4074 family high-speed, fault-tolerant data communications standards for integrated avionics

    Science.gov (United States)

    Meyer, John W.

    The Society of Automotive Engineers (SAE) has been addressing the need for data buses in advanced avionics systems. Since 1979, the SAE has had task groups developing a family of commercial data bus standards designed specifically for the unique fault-tolerant requirements of avionics applications: AS4074.1 linear, token-passing multiplex data bus (LTPB), and AS4074.2 high-speed ring bus (HSRB). The author explains the background of the two bus standards, gives a brief overview of the two protocols, and reviews current and future SAE activities in the avionics data bus field. It is concluded that the SAE LTPB and HSRB satisfy the data latency needs of emerging avionics architectures, as well as the reliability and fault tolerance requirements. Because of their ability to be supplemented with higher data rate versions, they will continue to support emerging avionics architectures.

  15. Simulation et modélisation de l’aérodynamique des configurations complexes d’avions

    OpenAIRE

    Barth, Marcus

    2011-01-01

    La prévision de l’aérodynamique des configurations complexes d’avion joue un rôle central dans le développement des avions, tant en termes de conception (e.g. l’optimisation des éléments hyptersustentateurs) qu’en termes de prévision des caractéristiques aérodynamiques de l’avion (e.g. la prévision des performances et des qualités de vol). Cette thèse s’attache uniquement au deuxième aspect, c’est-à-dire à la prévision des caractéristiques aérodynamiques de l’avion. Les configurations d’avion...

  16. The Consolidation of the End-to-End Avionics Systems Testbench

    Science.gov (United States)

    Wijnands, Quirien; Torelli, Felice; Blommestijn, Robert; Kranz, Stephan; Koster, Jean-Paul

    2014-08-01

    Over the past years, the Avionics System Test Bench (ATB) has been used to support the demonstration and validation of upcoming space avionics related standards and technologies in a representative environment. Next to this another main use-case of the facility has been to support projects in their needs of assessing particular technology related issues. In doing so, it was necessary to add activity- and project specifics to different configurations of the ATB, leading to a proliferation of facilities and technologies. In some cases however the results and lessons-learned from these efforts and activities were considered valuable to the ATB-concept in general and therefore needed preservation in the ATB mainstream for future reuse. Currently activities are ongoing to consolidate the End-To-End Avionics Systems TestBench (E2E-ATB). In this paper the resulting details of these activities are described as enhancements and improvements per ATB configuration.

  17. Avionics Systems Laboratory/Building 16. Historical Documentation

    Science.gov (United States)

    Slovinac, Patricia; Deming, Joan

    2011-01-01

    As part of this nation-wide study, in September 2006, historical survey and evaluation of NASA-owned and managed facilities that was conducted by NASA s Lyndon B. Johnson Space Center (JSC) in Houston, Texas. The results of this study are presented in a report entitled, "Survey and Evaluation of NASA-owned Historic Facilities and Properties in the Context of the U.S. Space Shuttle Program, Lyndon B. Johnson Space Center, Houston, Texas," prepared in November 2007 by NASA JSC s contractor, Archaeological Consultants, Inc. As a result of this survey, the Avionics Systems Laboratory (Building 16) was determined eligible for listing in the NRHP, with concurrence by the Texas State Historic Preservation Officer (SHPO). The survey concluded that Building 5 is eligible for the NRHP under Criteria A and C in the context of the U.S. Space Shuttle program (1969-2010). Because it has achieved significance within the past 50 years, Criteria Consideration G applies. At the time of this documentation, Building 16 was still used to support the SSP as an engineering research facility, which is also sometimes used for astronaut training. This documentation package precedes any undertaking as defined by Section 106 of the NHPA, as amended, and implemented in 36 CFR Part 800, as NASA JSC has decided to proactively pursue efforts to mitigate the potential adverse affects of any future modifications to the facility. It includes a historical summary of the Space Shuttle program; the history of JSC in relation to the SSP; a narrative of the history of Building 16 and how it supported the SSP; and a physical description of the structure. In addition, photographs documenting the construction and historical use of Building 16 in support of the SSP, as well as photographs of the facility documenting the existing conditions, special technological features, and engineering details, are included. A contact sheet printed on archival paper, and an electronic copy of the work product on CD, are

  18. Automatic Implementation of Ttethernet-Based Time-Triggered Avionics Applications

    Science.gov (United States)

    Gorcitz, Raul Adrian; Carle, Thomas; Lesens, David; Monchaux, David; Potop-Butucaruy, Dumitru; Sorel, Yves

    2015-09-01

    The design of safety-critical embedded systems such as those used in avionics still involves largely manual phases. But in avionics the definition of standard interfaces embodied in standards such as ARINC 653 or TTEthernet should allow the definition of fully automatic code generation flows that reduce the costs while improving the quality of the generated code, much like compilers have done when replacing manual assembly coding. In this paper, we briefly present such a fully automatic implementation tool, called Lopht, for ARINC653-based time-triggered systems, and then explain how it is currently extended to include support for TTEthernet networks.

  19. Distributed Fault-Tolerant Avionic Systems - A Real-Time Perspective

    CERN Document Server

    Burke, Michael

    2010-01-01

    This paper examines the problem of introducing advanced forms of fault-tolerance via reconfiguration into safety-critical avionic systems. This is required to enable increased availability after fault occurrence in distributed integrated avionic systems(compared to static federated systems). The approach taken is to identify a migration path from current architectures to those that incorporate re-configuration to a lesser or greater degree. Other challenges identified include change of the development process; incremental and flexible timing and safety analyses; configurable kernels applicable for safety-critical systems.

  20. Avionics system design for requirements for the United States Coast Guard HH-65A Dolphin

    Science.gov (United States)

    Young, D. A.

    1984-01-01

    Aerospatiale Helicopter Corporation (AHC) was awarded a contract by the United States Coast Guard for a new Short Range Recovery (SRR) Helicopter on 14 June 1979. The award was based upon an overall evaluation of performance, cost, and technical suitability. In this last respect, the SRR helicopter was required to meet a wide variety of mission needs for which the integrated avionics system has a high importance. This paper illustrates the rationale for the avionics system requirements, the system architecture, its capabilities and reliability and its adaptability to a wide variety of military and commercial purposes.

  1. Formal Safety and Security Assessment of an Avionic Architecture with Alloy

    Directory of Open Access Journals (Sweden)

    Julien Brunel

    2014-05-01

    Full Text Available We propose an approach based on Alloy to formally model and assess a system architecture with respect to safety and security requirements. We illustrate this approach by considering as a case study an avionic system developed by Thales, which provides guidance to aircraft. We show how to define in Alloy a metamodel of avionic architectures with a focus on failure propagations. We then express the specific architecture of the case study in Alloy. Finally, we express and check properties that refer to the robustness of the architecture to failures and attacks.

  2. Space shuttle program: Shuttle Avionics Integration Laboratory. Volume 7: Logistics management plan

    Science.gov (United States)

    1974-01-01

    The logistics management plan for the shuttle avionics integration laboratory defines the organization, disciplines, and methodology for managing and controlling logistics support. Those elements requiring management include maintainability and reliability, maintenance planning, support and test equipment, supply support, transportation and handling, technical data, facilities, personnel and training, funding, and management data.

  3. Digital Avionics Information System (DAIS): Mid-1980's Maintenance Task Analysis. Final Report.

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    The fundamental objective of the Digital Avionics Information System (DAIS) Life Cycle Cost (LCC) Study is to provide the Air Force with an enhanced in-house capability to incorporate LCC considerations during all stages of the system acquisition process. The purpose of this report is to describe the technical approach, results, and conclusions…

  4. Orion MPCV Service Module Avionics Ring Pallet Testing, Correlation, and Analysis

    Science.gov (United States)

    Staab, Lucas; Akers, James; Suarez, Vicente; Jones, Trevor

    2012-01-01

    The NASA Orion Multi-Purpose Crew Vehicle (MPCV) is being designed to replace the Space Shuttle as the main manned spacecraft for the agency. Based on the predicted environments in the Service Module avionics ring, an isolation system was deemed necessary to protect the avionics packages carried by the spacecraft. Impact, sinusoidal, and random vibration testing were conducted on a prototype Orion Service Module avionics pallet in March 2010 at the NASA Glenn Research Center Structural Dynamics Laboratory (SDL). The pallet design utilized wire rope isolators to reduce the vibration levels seen by the avionics packages. The current pallet design utilizes the same wire rope isolators (M6-120-10) that were tested in March 2010. In an effort to save cost and schedule, the Finite Element Models of the prototype pallet tested in March 2010 were correlated. Frequency Response Function (FRF) comparisons, mode shape and frequency were all part of the correlation process. The non-linear behavior and the modeling the wire rope isolators proved to be the most difficult part of the correlation process. The correlated models of the wire rope isolators were taken from the prototype design and integrated into the current design for future frequency response analysis and component environment specification.

  5. Avionics Instrument Systems Specialist Career Ladder: AFSCs 32531, 32551, 31571, and 32591. Occupational Survey Report.

    Science.gov (United States)

    Air Force Occupational Measurement Center, Lackland AFB, TX.

    The Avionics Instrument Systems career ladder (AFSC 325X1) provides flight line and shop maintenance training on aircraft instrument systems, electromechancial instruments, components, and test equipment. Duties involve inspecting, removing, installing, repairing, operating, troubleshooting, overhauling, and modifying systems such as flight and…

  6. MECHANIZATION STUDY OF THE TECHNICAL LIBRARY U.S. NAVAL AVIONICS FACILITY, INDIANAPOLIS, INDIANA.

    Science.gov (United States)

    KERSHAW, G.A.; AND OTHERS

    THE NAVAL AVIONICS FACILITY, INDIANAPOLIS (NAFI) TECHNICAL LIBRARY IS PLANNING A MECHANIZED SYSTEM TO PRODUCE A PERMUTED INDEX OF PERTINENT PERIODICAL REFERENCES AND PROCEEDINGS, WITH BOOKS AND DOCUMENTS TO BE ADDED LATER. INPUT TO THE SYSTEM IS PUNCHED PAPER TAPE PREPARED FROM THE SOURCE MATERIAL, AND THE PRIMARY PROGRAM IS A "CANNED"…

  7. 78 FR 54791 - Proposed Additional Airworthiness Design Standards: Advanced Avionics Under the Special Class...

    Science.gov (United States)

    2013-09-06

    ... Federal Aviation Administration 14 CFR Part 21 Proposed Additional Airworthiness Design Standards...: This document announces the issuance of the design criteria for the inclusion of advance avionics with intergrated electronic displays for the Aquila Aviation by Excellence GmbH AT01-100. These...

  8. Spacecraft Avionics Software Development Then and Now: Different but the Same

    Science.gov (United States)

    Mangieri, Mark L.; Garman, John (Jack); Vice, Jason

    2012-01-01

    NASA has always been in the business of balancing new technologies and techniques to achieve human space travel objectives. NASA s historic Software Production Facility (SPF) was developed to serve complex avionics software solutions during an era dominated by mainframes, tape drives, and lower level programming languages. These systems have proven themselves resilient enough to serve the Shuttle Orbiter Avionics life cycle for decades. The SPF and its predecessor the Software Development Lab (SDL) at NASA s Johnson Space Center (JSC) hosted flight software (FSW) engineering, development, simulation, and test. It was active from the beginning of Shuttle Orbiter development in 1972 through the end of the shuttle program in the summer of 2011 almost 40 years. NASA s Kedalion engineering analysis lab is on the forefront of validating and using many contemporary avionics HW/SW development and integration techniques, which represent new paradigms to NASA s heritage culture in avionics software engineering. Kedalion has validated many of the Orion project s HW/SW engineering techniques borrowed from the adjacent commercial aircraft avionics environment, inserting new techniques and skills into the Multi-Purpose Crew Vehicle (MPCV) Orion program. Using contemporary agile techniques, COTS products, early rapid prototyping, in-house expertise and tools, and customer collaboration, NASA has adopted a cost effective paradigm that is currently serving Orion effectively. This paper will explore and contrast differences in technology employed over the years of NASA s space program, due largely to technological advances in hardware and software systems, while acknowledging that the basic software engineering and integration paradigms share many similarities.

  9. Étude du comportement en roulement d'un pneu d'avion

    OpenAIRE

    Kongo-Kondé, Ange; Rosu, Lulian; Lebon, Frédéric; Brardo, Olivier; Dévesa, Bernard

    2009-01-01

    International audience; Ce travail présente une méthode d'éléments finis pour la simulation du roulement d'un pneu d'avion. Le caractère incompressible des matériaux, les grandes transformations ainsi que le contact unilatéral avec frottement de Coulomb sont pris en compte. Le modèle numérique permettra d'estimer le torseur des efforts au contact pneu–sol sous des conditions critiques et extrêmes pour la sécurité de l'avion. Nous montrerons l'influence des paramètres de chargements et du déra...

  10. Hardware Implementation of COTS Avionics System on Unmanned Aerial Vehicle Platforms

    Science.gov (United States)

    Yeh, Yoo-Hsiu; Kumar, Parth; Ishihara, Abraham; Ippolito, Corey

    2010-01-01

    Unmanned Aerial Vehicles (UAVs) can serve as low cost and low risk platforms for flight testing in Aeronautics research. The NASA Exploration Aerial Vehicle (EAV) and Experimental Sensor-Controlled Aerial Vehicle (X-SCAV) UAVs were developed in support of control systems research at NASA Ames Research Center. The avionics hardware for both systems has been redesigned and updated, and the structure of the EAV has been further strengthened. Preliminary tests show the avionics operate properly in the new configuration. A linear model for the EAV also was estimated from flight data, and was verified in simulation. These modifications and results prepare the EAV and X-SCAV to be used in a wide variety of flight research projects.

  11. Avionic technology testing by using a cognitive neurometric index: A study with professional helicopter pilots.

    Science.gov (United States)

    Borghini, Gianluca; Aricò, Pietro; Di Flumeri, Gianluca; Salinari, Serenella; Colosimo, Alfredo; Bonelli, Stefano; Napoletano, Linda; Ferreira, Ana; Babiloni, Fabio

    2015-01-01

    In this study, we investigated the possibility to evaluate the impact of different avionic technologies on the mental workload of helicopter's pilots by measuring their brain activity with the EEG during a series of simulated missions carried out at AgustaWestland facilities in Yeovil (UK). The tested avionic technologies were: i) Head-Up Display (HUD); ii) Head-Mounted Display (HMD); iii) Full Conformal symbology (FC); iv) Flight Guidance (FG) symbology; v) Synthetic Vision System (SVS); and vi) Radar Obstacles (RO) detection system. It has been already demonstrated that in cognitive tasks, when the cerebral workload increases the EEG power spectral density (PSD) in theta band over frontal areas increases, and the EEG PSD in alpha band decreases over parietal areas. A mental workload index (MWL) has been here defined as the ratio between the frontal theta and parietal alpha EEG PSD values. Such index has been used for testing and comparing the different avionic technologies. Results suggested that the HUD provided a significant (ptechnologies. In addition, the simultaneous use of FC and FG technologies (FC+FG) produced a significant decrement of the workload (ptechnology provided on Head Down Display (HDD) with the simultaneous use of FC+FG and the RO seemed to produce a lower cerebral workload when compared with the use of only the FC. Interestingly, the workload estimation by means of subjective measures, provided by pilots through a NASA-TLX questionnaire, did not provide any significant differences among the different flight scenarios. These results suggested that the proposed MWL cognitive neurometrics could be used as a reliable measure of the user's mental workload, being a valid indicator for the comparison and the test of different avionic technologies.

  12. Advanced Avionics and Processor Systems for a Flexible Space Exploration Architecture

    Science.gov (United States)

    Keys, Andrew S.; Adams, James H.; Smith, Leigh M.; Johnson, Michael A.; Cressler, John D.

    2010-01-01

    The Advanced Avionics and Processor Systems (AAPS) project, formerly known as the Radiation Hardened Electronics for Space Environments (RHESE) project, endeavors to develop advanced avionic and processor technologies anticipated to be used by NASA s currently evolving space exploration architectures. The AAPS project is a part of the Exploration Technology Development Program, which funds an entire suite of technologies that are aimed at enabling NASA s ability to explore beyond low earth orbit. NASA s Marshall Space Flight Center (MSFC) manages the AAPS project. AAPS uses a broad-scoped approach to developing avionic and processor systems. Investment areas include advanced electronic designs and technologies capable of providing environmental hardness, reconfigurable computing techniques, software tools for radiation effects assessment, and radiation environment modeling tools. Near-term emphasis within the multiple AAPS tasks focuses on developing prototype components using semiconductor processes and materials (such as Silicon-Germanium (SiGe)) to enhance a device s tolerance to radiation events and low temperature environments. As the SiGe technology will culminate in a delivered prototype this fiscal year, the project emphasis shifts its focus to developing low-power, high efficiency total processor hardening techniques. In addition to processor development, the project endeavors to demonstrate techniques applicable to reconfigurable computing and partially reconfigurable Field Programmable Gate Arrays (FPGAs). This capability enables avionic architectures the ability to develop FPGA-based, radiation tolerant processor boards that can serve in multiple physical locations throughout the spacecraft and perform multiple functions during the course of the mission. The individual tasks that comprise AAPS are diverse, yet united in the common endeavor to develop electronics capable of operating within the harsh environment of space. Specifically, the AAPS tasks for

  13. Avionics-compatible video facial cognizer for detection of pilot incapacitation.

    Science.gov (United States)

    Steffin, Morris

    2006-01-01

    High-acceleration loss of consciousness is a serious problem for military pilots. In this laboratory, a video cognizer has been developed that in real time detects facial changes closely coupled to the onset of loss of consciousness. Efficient algorithms are compatible with video digital signal processing hardware and are thus configurable on an autonomous single board that generates alarm triggers to activate autopilot, and is avionics-compatible.

  14. Avionics/Control co-design for large flexible space structures

    OpenAIRE

    2013-01-01

    In this paper, a multi-model H1 synthesis scheme for fixed-structure controller design is developed and applied to the attitude control of a highly flexible earth-observation satellite. The particularity of the proposed approach is that the decision variables optimized by the fixed-structure Hinfinity solver include the structured controller parameters but also some parameters which characterize the avionics. Furthermore the proposed control scheme can be very easily adapted to a new confi...

  15. Modeling of signal transmitting of avionic systems based on Volterra series

    Directory of Open Access Journals (Sweden)

    Юрий Владимирович Пепа

    2014-11-01

    Full Text Available The paper deals with mathematical modeling methods for the formation and transmission of analogue and digital avionics systems using Volterra series. A mathematical model of the modulation in the presence of various initial data is developed, the computer modeling is conducted. The processes of analog modulation is simulated using MATLAB+SIMULINK, which allows you to simulate these processes, as well as explore them.

  16. Cold Regions Logistic Supportability Testing of Electronic, Avionic and Communications Equipment.

    Science.gov (United States)

    2014-09-26

    A18 887 COLD REGIONS LOGISTIC SUPPORTABILITY TESTING OF / AS ELECTRONIC AVIONIC AMD CO..IUI ANY T EST AND EVALUATION COMAND ABERDEEN PROVING GROUND...optimum durability and service life of materiel. (b) To eliminate field maintenance problems encountered in earlier design items. (c) For ease of...heat sensitive). 5.2.2 Analysis. Assess the impact of each supply support anomaly un- covered in relation to the test item. Include comments as to the

  17. NI Based System for Seu Testing of Memory Chips for Avionics

    Directory of Open Access Journals (Sweden)

    Boruzdina Anna

    2016-01-01

    Full Text Available This paper presents the results of implementation of National Instrument based system for Single Event Upset testing of memory chips into neutron generator experimental facility, which used for SEU tests for avionics purposes. Basic SEU testing algorithm with error correction and constant errors detection is presented. The issues of radiation shielding of NI based system are discussed and solved. The examples of experimental results show the applicability of the presented system for SEU memory testing under neutrons influence.

  18. A COTS-derived NVG compatible 20.1" avionics display

    Science.gov (United States)

    Thomas, J.; Cavalcanti, A.

    2007-04-01

    Many avionics displays, particularly for cockpit applications require NVG compatibility. Unusually, the mission definition for a new maritime helicopter has identified a need for NVG compatibility for all of the mission-system displays, including the 20.1" diagonal, SXGA resolution Tactical Workstation Display (TWD) located in the rear cabin. This paper will describe some design tradeoff considerations and describe both some required and measured performance parameters.

  19. NEXUS Scalable and Distributed Next-Generation Avionics Bus for Space Missions

    Science.gov (United States)

    He, Yutao; Shalom, Eddy; Chau, Savio N.; Some, Raphael R.; Bolotin, Gary S.

    2011-01-01

    A paper discusses NEXUS, a common, next-generation avionics interconnect that is transparently compatible with wired, fiber-optic, and RF physical layers; provides a flexible, scalable, packet switched topology; is fault-tolerant with sub-microsecond detection/recovery latency; has scalable bandwidth from 1 Kbps to 10 Gbps; has guaranteed real-time determinism with sub-microsecond latency/jitter; has built-in testability; features low power consumption (avionics interconnect requirements without breaking the standard. This unified interconnect technology can be used to meet performance, power, size, and reliability requirements of all ranges of equipment, sensors, and actuators at chip-to-chip, board-to-board, or box-to-box boundary. Early results from in-house modeling activity of Serial RapidIO using VisualSim indicate that the use of a switched, high-performance avionics network will provide a quantum leap in spacecraft onboard science and autonomy capability for science and exploration missions.

  20. An integrated autonomous rendezvous and docking system architecture using Centaur modern avionics

    Science.gov (United States)

    Nelson, Kurt

    1991-01-01

    The avionics system for the Centaur upper stage is in the process of being modernized with the current state-of-the-art in strapdown inertial guidance equipment. This equipment includes an integrated flight control processor with a ring laser gyro based inertial guidance system. This inertial navigation unit (INU) uses two MIL-STD-1750A processors and communicates over the MIL-STD-1553B data bus. Commands are translated into load activation through a Remote Control Unit (RCU) which incorporates the use of solid state relays. Also, a programmable data acquisition system replaces separate multiplexer and signal conditioning units. This modern avionics suite is currently being enhanced through independent research and development programs to provide autonomous rendezvous and docking capability using advanced cruise missile image processing technology and integrated GPS navigational aids. A system concept was developed to combine these technologies in order to achieve a fully autonomous rendezvous, docking, and autoland capability. The current system architecture and the evolution of this architecture using advanced modular avionics concepts being pursued for the National Launch System are discussed.

  1. Vertical guidance performance analysis of the L1-L5 dual-frequency GPS/WAAS user avionics sensor.

    Science.gov (United States)

    Jan, Shau-Shiun

    2010-01-01

    This paper investigates the potential vertical guidance performance of global positioning system (GPS)/wide area augmentation system (WAAS) user avionics sensor when the modernized GPS and Galileo are available. This paper will first investigate the airborne receiver code noise and multipath (CNMP) confidence (σair). The σair will be the dominant factor in the availability analysis of an L1-L5 dual-frequency GPS/WAAS user avionics sensor. This paper uses the MATLAB Algorithm Availability Simulation Tool (MAAST) to determine the required values for the σair, so that an L1-L5 dual-frequency GPS/WAAS user avionics sensor can meet the vertical guidance requirements of APproach with Vertical guidance (APV) II and CATegory (CAT) I over conterminous United States (CONUS). A modified MAAST that includes the Galileo satellite constellation is used to determine under what user configurations WAAS could be an APV II system or a CAT I system over CONUS. Furthermore, this paper examines the combinations of possible improvements in signal models and the addition of Galileo to determine if GPS/WAAS user avionics sensor could achieve 10 m Vertical Alert Limit (VAL) within the service volume. Finally, this paper presents the future vertical guidance performance of GPS user avionics sensor for the United States' WAAS, Japanese MTSAT-based satellite augmentation system (MSAS) and European geostationary navigation overlay service (EGNOS).

  2. Vertical Guidance Performance Analysis of the L1-L5 Dual-Frequency GPS/WAAS User Avionics Sensor

    Directory of Open Access Journals (Sweden)

    Shau-Shiun Jan

    2010-03-01

    Full Text Available This paper investigates the potential vertical guidance performance of global positioning system (GPS/wide area augmentation system (WAAS user avionics sensor when the modernized GPS and Galileo are available. This paper will first investigate the airborne receiver code noise and multipath (CNMP confidence (σair. The σair will be the dominant factor in the availability analysis of an L1-L5 dual-frequency GPS/WAAS user avionics sensor. This paper uses the MATLAB Algorithm Availability Simulation Tool (MAAST to determine the required values for the σair, so that an L1-L5 dual-frequency GPS/WAAS user avionics sensor can meet the vertical guidance requirements of APproach with Vertical guidance (APV II and CATegory (CAT I over conterminous United States (CONUS. A modified MAAST that includes the Galileo satellite constellation is used to determine under what user configurations WAAS could be an APV II system or a CAT I system over CONUS. Furthermore, this paper examines the combinations of possible improvements in signal models and the addition of Galileo to determine if GPS/WAAS user avionics sensor could achieve 10 m Vertical Alert Limit (VAL within the service volume. Finally, this paper presents the future vertical guidance performance of GPS user avionics sensor for the United States’ WAAS, Japanese MTSAT-based satellite augmentation system (MSAS and European geostationary navigation overlay service (EGNOS.

  3. THE UNMANNED MISSION AVIONICS TEST HELICIOPTER – A FLEXIBLE AND VERSATILE VTOL-UAS EXPERIMENTAL SYSTEM

    Directory of Open Access Journals (Sweden)

    Dr. H.-W. Schulz

    2012-09-01

    Full Text Available civil customers. These applications cover a wide spectrum from R&D programs for the military customer to special services for the civil customer. This paper focuses on the technical conversion of a commercially available VTOL-UAS to ESG's Unmanned Mission Avionics Test Helicopter (UMAT, its concept and operational capabilities. At the end of the paper, the current integration of a radar sensor is described as an example of the UMATs flexibility. The radar sensor is developed by the Fraunhofer Institute for High Frequency Physics and Radar Techniques (FHR. It is integrated by ESG together with the industrial partner SWISS UAV.

  4. Cycle O (CY 1991) NLS trade studies and analyses, book 2. Part 1: Avionics and systems

    Science.gov (United States)

    Harris, Richard; Kirkland, Zach

    1992-01-01

    An assessment was conducted to determine the maximum LH2 tank stretch capability based on the constraints of the manufacturing, tooling and facilities at the Michoud Assembly Facility in New Orleans, Louisiana. The maximum tank stretch was determined to be 5 ft. with minor or no modifications, a stretch of 11 ft. with some possible facility modifications and beyond 11 ft. significant new facilities are required. A cost analysis was performed to evaluate the impacts for various stretch lengths. Tasks that were defined to perform trades and studies regarding the best approach to meet requirements for the National Launch System Avionics are also discussed.

  5. Avionics sensor simulation and prototype design workstation using COTS reconfigurable computing technology

    Science.gov (United States)

    Falasco, James

    2007-04-01

    This paper reviews hardware and software solutions that allow for rapid prototyping of new or modified embedded avionics sensor designs, mission payloads and functional sub assemblies. We define reconfigurable computing in the context of being able to place various PMC modules depending upon mission scenarios onto a base SBC (Single Board Computer). This SBC could be either a distributed or shared memory architecture concept and have either two or four PPC7447 A/7448 processor clusters. In certain scenarios, various combinations of boards could be combined in order to provide a heterogeneous computing environment.

  6. Solving Autonomy Technology Gaps through Wireless Technology and Orion Avionics Architectural Principles

    Science.gov (United States)

    Black, Randy; Bai, Haowei; Michalicek, Andrew; Shelton, Blaine; Villela, Mark

    2008-01-01

    Currently, autonomy in space applications is limited by a variety of technology gaps. Innovative application of wireless technology and avionics architectural principles drawn from the Orion crew exploration vehicle provide solutions for several of these gaps. The Vision for Space Exploration envisions extensive use of autonomous systems. Economic realities preclude continuing the level of operator support currently required of autonomous systems in space. In order to decrease the number of operators, more autonomy must be afforded to automated systems. However, certification authorities have been notoriously reluctant to certify autonomous software in the presence of humans or when costly missions may be jeopardized. The Orion avionics architecture, drawn from advanced commercial aircraft avionics, is based upon several architectural principles including partitioning in software. Robust software partitioning provides "brick wall" separation between software applications executing on a single processor, along with controlled data movement between applications. Taking advantage of these attributes, non-deterministic applications can be placed in one partition and a "Safety" application created in a separate partition. This "Safety" partition can track the position of astronauts or critical equipment and prevent any unsafe command from executing. Only the Safety partition need be certified to a human rated level. As a proof-of-concept demonstration, Honeywell has teamed with the Ultra WideBand (UWB) Working Group at NASA Johnson Space Center to provide tracking of humans, autonomous systems, and critical equipment. Using UWB the NASA team can determine positioning to within less than one inch resolution, allowing a Safety partition to halt operation of autonomous systems in the event that an unplanned collision is imminent. Another challenge facing autonomous systems is the coordination of multiple autonomous agents. Current approaches address the issue as one of

  7. Research on the Algorithm of Avionic Device Fault Diagnosis Based on Fuzzy Expert System

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Based on the fuzzy expert system fault diagnosis theory, the knowledge base architecture and inference engine algorithm are put forward for avionic device fault diagnosis. The knowledge base is constructed by fault query network, of which the basic element is the test-diagnosis fault unit. Every underlying fault cause's membership degree is calculated using fuzzy product inference algorithm, and the fault answer best selection algorithm is developed, to which the deep knowledge is applied. Using some examples,the proposed algorithm is analyzed for its capability of synthesis diagnosis and its improvement compared to greater membership degree first principle.

  8. Customer Avionics Interface Development and Analysis (CAIDA) Lab DEWESoft Display Creation

    Science.gov (United States)

    Coffey, Connor

    2015-01-01

    The Customer Avionics Interface Development and Analysis (CAIDA) Lab supports the testing of the Launch Control System (LCS), NASA's command and control system for the Space Launch System (SLS), Orion Multi-Purpose Crew Vehicle (MPCV), and ground support equipment. The objectives of the year-long internship were to support day-to-day operations of the CAIDA Lab, create prelaunch and tracking displays for Orion's Exploration Flight Test 1 (EFT-1), and create a program to automate the creation of displays for SLS and MPCV to be used by CAIDA and the Record and Playback Subsystem (RPS).

  9. Modelización computacional del ensayo de evacuación de emergencia de aviones de transporte

    OpenAIRE

    Hedo Rodríguez, José Manuel

    2011-01-01

    Resumen En la explotación de aviones de transporte se presentan situaciones de riesgo en las que se necesita realizar una evacuación de emergencia, aunque afortunadamente sean cada vez menos. La eficacia de esta operación es crucial para salvar las vidas de los ocupantes. Para garantizar un cierto nivel de seguridad, la certificación de este tipo de aviones exige pasar con éxito el llamado ensayo de evacuación. Este consiste en la obtención del tiempo que tarda en evacuarse completamente el a...

  10. Aerodynamics of the advanced launch system (ALS) propulsion and avionics (P/A) module

    Science.gov (United States)

    Ferguson, Stan; Savage, Dick

    1992-01-01

    This paper discusses the design and testing of candidate Advanced Launch System (ALS) Propulsion and Avionics (P/A) Module configurations. The P/A Module is a key element of future launch systems because it is essential to the recovery and reuse of high-value propulsion and avionics hardware. The ALS approach involves landing of first stage (booster) and/or second stage (core) P/A modules near the launch site to minimize logistics and refurbishment cost. The key issue addressed herein is the aerodynamic design of the P/A module, including the stability characteristics and the lift-to-drag (L/D) performance required to achieve the necessary landing guidance accuracy. The reference P/A module configuration was found to be statically stable for the desired flight regime, to provide adequate L/D for targeting, and to have effective modulation of the L/D performance using a body flap. The hypersonic aerodynamic trends for nose corner radius, boattail angle and body flap deflections were consistent with pretest predictions. However, the levels for the L/D and axial force for hypersonic Mach numbers were overpredicted by impact theories.

  11. Digital Avionics Information System (DAIS): Reliability and Maintainability Model Users Guide. Final Report, May 1975-July 1977.

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    This report provides a complete guide to the stand alone mode operation of the reliability and maintenance (R&M) model, which was developed to facilitate the performance of design versus cost trade-offs within the digital avionics information system (DAIS) acquisition process. The features and structure of the model, its input data…

  12. Digital Avionics Information System (DAIS): Impact of DAIS Concept on Life Cycle Cost--Supplement. Final Report.

    Science.gov (United States)

    Goclowski, John C.; And Others

    This supplement to a technical report providing the results of a preliminary investigation of the potential impact of the Digital Avionics Information System (DAIS) concept on system support personnel requirements and life cycle cost (LCC) includes: (1) additional details of the cost comparison of a hypothetical application of a conceptual…

  13. Search and Rescue Aircrewman/HH3F Avionics, 2-11. Military Curriculum Materials for Vocational and Technical Education.

    Science.gov (United States)

    Ohio State Univ., Columbus. National Center for Research in Vocational Education.

    This self-paced, individualized course, adapted from military curriculum materials for use in vocational and technical education, teaches students the skills needed to become a qualified avionics worker and aircrew rescuer on the HH-3F helicopter. The course materials consist of four pamphlets: two student workbooks and two student syllabuses. The…

  14. F-35航电系统的发展%Development of the F-35 Avionics System

    Institute of Scientific and Technical Information of China (English)

    罗锐; 李国柱

    2012-01-01

    F-35 avionics system plays more and more roles in the war today.The process of development of the F-35 avionics system abroad and equipment in some countries in the world and its modification are described.The technique performance and properties of several F-35 avionics system seekers are analyzed;and development trend And analysis of F-35 avionics system are discussed.%F-35航电系统在现代战争中发挥着越来越重要的作用。文章介绍了F-35航电系统的发展历程以及装备的研制、改进情况,指出了在现代战争中发展F-35航电系统的优势和重要性,重点探讨了几种F-35航电系统的性能及其特点,最后论述了F-35航电系统的发展动向与分析。

  15. Investigation of HZETRN 2010 as a Tool for Single Event Effect Qualification of Avionics Systems

    Science.gov (United States)

    Rojdev, Kristina; Koontz, Steve; Atwell, William; Boeder, Paul

    2014-01-01

    NASA's future missions are focused on long-duration deep space missions for human exploration which offers no options for a quick emergency return to Earth. The combination of long mission duration with no quick emergency return option leads to unprecedented spacecraft system safety and reliability requirements. It is important that spacecraft avionics systems for human deep space missions are not susceptible to Single Event Effect (SEE) failures caused by space radiation (primarily the continuous galactic cosmic ray background and the occasional solar particle event) interactions with electronic components and systems. SEE effects are typically managed during the design, development, and test (DD&T) phase of spacecraft development by using heritage hardware (if possible) and through extensive component level testing, followed by system level failure analysis tasks that are both time consuming and costly. The ultimate product of the SEE DD&T program is a prediction of spacecraft avionics reliability in the flight environment produced using various nuclear reaction and transport codes in combination with the component and subsystem level radiation test data. Previous work by Koontz, et al.1 utilized FLUKA, a Monte Carlo nuclear reaction and transport code, to calculate SEE and single event upset (SEU) rates. This code was then validated against in-flight data for a variety of spacecraft and space flight environments. However, FLUKA has a long run-time (on the order of days). CREME962, an easy to use deterministic code offering short run times, was also compared with FLUKA predictions and in-flight data. CREME96, though fast and easy to use, has not been updated in several years and underestimates secondary particle shower effects in spacecraft structural shielding mass. Thus, this paper will investigate the use of HZETRN 20103, a fast and easy to use deterministic transport code, similar to CREME96, that was developed at NASA Langley Research Center primarily for

  16. Multi-Purpose Avionic Architecture for Vision Based Navigation Systems for EDL and Surface Mobility Scenarios

    Science.gov (United States)

    Tramutola, A.; Paltro, D.; Cabalo Perucha, M. P.; Paar, G.; Steiner, J.; Barrio, A. M.

    2015-09-01

    Vision Based Navigation (VBNAV) has been identified as a valid technology to support space exploration because it can improve autonomy and safety of space missions. Several mission scenarios can benefit from the VBNAV: Rendezvous & Docking, Fly-Bys, Interplanetary cruise, Entry Descent and Landing (EDL) and Planetary Surface exploration. For some of them VBNAV can improve the accuracy in state estimation as additional relative navigation sensor or as absolute navigation sensor. For some others, like surface mobility and terrain exploration for path identification and planning, VBNAV is mandatory. This paper presents the general avionic architecture of a Vision Based System as defined in the frame of the ESA R&T study “Multi-purpose Vision-based Navigation System Engineering Model - part 1 (VisNav-EM-1)” with special focus on the surface mobility application.

  17. Power, Avionics and Software - Phase 1.0:. [Subsystem Integration Test Report

    Science.gov (United States)

    Ivancic, William D.; Sands, Obed S.; Bakula, Casey J.; Oldham, Daniel R.; Wright, Ted; Bradish, Martin A.; Klebau, Joseph M.

    2014-01-01

    This report describes Power, Avionics and Software (PAS) 1.0 subsystem integration testing and test results that occurred in August and September of 2013. This report covers the capabilities of each PAS assembly to meet integration test objectives for non-safety critical, non-flight, non-human-rated hardware and software development. This test report is the outcome of the first integration of the PAS subsystem and is meant to provide data for subsequent designs, development and testing of the future PAS subsystems. The two main objectives were to assess the ability of the PAS assemblies to exchange messages and to perform audio testing of both inbound and outbound channels. This report describes each test performed, defines the test, the data, and provides conclusions and recommendations.

  18. Experimenting Maintenance of Flight Software in an Integrated Modular Avionics for Space

    Science.gov (United States)

    Hardy, Johan; Laroche, Thomas; Creten, Philippe; Parisis, Paul; Hiller, Martin

    2014-08-01

    This paper presents an experiment of Flight Software partitioning in an Integrated Modular Avionics for Space (IMA-SP) system. This experiment also tackles the maintenance aspects of IMA-SP systems. The presented case study is PROBA-2 Flight Software. The paper addresses and discusses the following subjects: On-Board Software Maintenance in IMA- SP, boot strategy for Time and Space Partitioning, considerations about the ground segment related to On-Board Software Maintenance in IMA-SP, and architectural impacts of Time and Space Partitioning for PROBA software's. Finally, this paper presents the results and the achievements of the study and it appeals at further perspectives for IMA-SP and Time and Space Partitioning.

  19. Virtual Instrumentation Techniques in Test and Evaluation of Launch Vehicle Avionics

    Directory of Open Access Journals (Sweden)

    R. Sethunadh

    2002-10-01

    Full Text Available This paper presents the concept of virtual instrumentation and its importance in test and evaluation of launch vehicle avionics. The experiences at the Vikram Sarabhai Space Centre (VSSC with virtual instrumentation systems, highlighting the virtual instrumentation-based checkout systems of pyro current monitoring package and video image processing unit are presented. The virtual instrumentation system-based checkouts present cost-effective, compact, and user-friendly human-machine interlaces for the test and evaluation of these packages. The issues of a common hardware-software platform for testing different telemetry packages and the capability of real-time virtual instruments for testing navigation, guidance, and control packages have been investigated.

  20. A Modeling Language Based on UML for Modeling Simulation Testing System of Avionic Software

    Institute of Scientific and Technical Information of China (English)

    WANG Lize; LIU Bin; LU Minyan

    2011-01-01

    With direct expression of individual application domain patterns and ideas, domain-specific modeling language (DSML) is more and more frequently used to build models instead of using a combination of one or more general constructs. Based on the profile mechanism of unified modeling language (UML) 2.2, a kind of DSML is presented to model simulation testing systems of avionic software (STSAS). To define the syntax, semantics and notions of the DSML, the domain model of the STSAS from which we generalize the domain concepts and relationships among these concepts is given, and then, the domain model is mapped into a UML meta-model, named UML-STSAS profile. Assuming a flight control system (FCS) as system under test (SUT), we design the relevant STSAS. The results indicate that extending UML to the simulation testing domain can effectively and precisely model STSAS.

  1. Design of Energy-efficient Hierarchical Scheduling for Integrated Modular Avionics Systems

    Institute of Scientific and Technical Information of China (English)

    ZHOU Tianran; XIONG Huagang

    2012-01-01

    Recently the integrated modular avionics (IMA) architecture which introduces the concept of resource partitions becomes popular as an alternative to the traditional federated architecture.This study investigates the problem of designing hierarchical scheduling for IMA systems.The proposed scheduler model enables strong temporal partitioning,so that multiple hard real-time applications can be easily integrated into an uniprocessor platform.This paper derives the mathematic relationships among partition cycle,partition capacity and schedulability under the real-time condition,and then proposes an algorithm for optimizing partition parameters.Real-time tasks with arbitrary deadlines are considered for generality.To further improve the basic algorithm and reduce the energy consumption for embedded systems in aircraft,a power optimization approach is also proposed by exploiting the slack time.Experimental results show that the designed system can guarantee the hard real-time requirement and reduce the power consumption by at least 14%.

  2. Modular, Cost-Effective, Extensible Avionics Architecture for Secure, Mobile Communications

    Science.gov (United States)

    Ivancic, William D.

    2007-01-01

    Current onboard communication architectures are based upon an all-in-one communications management unit. This unit and associated radio systems has regularly been designed as a one-off, proprietary system. As such, it lacks flexibility and cannot adapt easily to new technology, new communication protocols, and new communication links. This paper describes the current avionics communication architecture and provides a historical perspective of the evolution of this system. A new onboard architecture is proposed that allows full use of commercial-off-the-shelf technologies to be integrated in a modular approach thereby enabling a flexible, cost-effective and fully deployable design that can take advantage of ongoing advances in the computer, cryptography, and telecommunications industries.

  3. Proven high-reliability assembly methods applied to avionics fiber-optics high-speed transceivers

    Science.gov (United States)

    Lauzon, Jocelyn; Leduc, Lorrain; Bessette, Daniel; Bélanger, Nicolas; Larose, Robert; Dion, Bruno

    2012-06-01

    Harsh environment avionics applications require operating temperature ranges that can extend to, and exceed -50 to 115°C. For obvious maintenance, management and cost arguments, product lifetimes as long as 20 years are also sought. This leads to mandatory long-term hermeticity that cannot be obtained with epoxy or silicone sealing; but only with glass seal or metal solder or brazing. A hermetic design can indirectly result in the required RF shielding of the component. For fiber-optics products, these specifications need to be compatible with the smallest possible size, weight and power consumption. The products also need to offer the best possible high-speed performances added to the known EMI immunity in the transmission lines. Fiber-optics transceivers with data rates per fiber channel up to 10Gbps are now starting to be offered on the market for avionics applications. Some of them are being developed by companies involved in the "normal environment" telecommunications market that are trying to ruggedize their products packaging in order to diversify their customer base. Another approach, for which we will present detailed results, is to go back to the drawing boards and design a new product that is adapted to proven MIL-PRF-38534 high-reliability packaging assembly methods. These methods will lead to the introduction of additional requirements at the components level; such as long-term high-temperature resistance for the fiber-optic cables. We will compare both approaches and demonstrate the latter, associated with the redesign, is the preferable one. The performance of the fiber-optic transceiver we have developed, in terms of qualification tests such as temperature cycling, constant acceleration, hermeticity, residual gaz analysis, operation under random vibration and mechanical shocks and accelerated lifetime tests will be presented. The tests are still under way, but so far, we have observed no performance degradation of such a product after more than

  4. Energy distribution of cosmic rays in the Earth’s atmosphere and avionic area using Monte Carlo codes

    Indian Academy of Sciences (India)

    MOHAMED M OULD; DIB A S A; BELBACHIR A H

    2016-07-01

    Cosmic rays cause significant damage to the electronic equipments of the aircrafts. In this paper, we have investigated the accumulation of the deposited energy of cosmic rays on the Earth’s atmosphere, especially in the aircraft area. In fact, if a high-energy neutron or proton interacts with a nanodevice having only a few atoms, this neutron or proton particle can change the nature of this device and destroy it. Our simulation based on Monte Carlo using Geant4 code shows that the deposited energy of neutron particles ranging between 200MeV and 5 GeV are strongly concentrated in the region between 10 and 15 km from the sea level which is exactly the avionic area. However, the Bragg peak energy of proton particle is slightly localized above the avionic area.

  5. Validation Methods Research for Fault-Tolerant Avionics and Control Systems Sub-Working Group Meeting. CARE 3 peer review

    Science.gov (United States)

    Trivedi, K. S. (Editor); Clary, J. B. (Editor)

    1980-01-01

    A computer aided reliability estimation procedure (CARE 3), developed to model the behavior of ultrareliable systems required by flight-critical avionics and control systems, is evaluated. The mathematical models, numerical method, and fault-tolerant architecture modeling requirements are examined, and the testing and characterization procedures are discussed. Recommendations aimed at enhancing CARE 3 are presented; in particular, the need for a better exposition of the method and the user interface is emphasized.

  6. The Conflicting Forces Driving Future Avionics Acquisition (Les Arguments Contradictoires pour les Futurs Achats d’Equipements d’Avionique)

    Science.gov (United States)

    1991-09-01

    les donn~es souvent contradictoires qui sont la base de lorentaton des efforts de d6veloppement dans cc domarne. Ces tendarices. ces conflits et ces dr...isation/recalagos Approche Gostion du vol *Communications (modes clair et brouill~s) -Identification - Gestion dos syst~mos avions (servitudes) *Interface H...omme/Systbme (IHS) * Gestion des pannos et des alarmes *Maintenance en ligno -Pr6paration/rbtstitution de mission *Conduites do fir Air/Air -Conduites

  7. TechEdSat - An Educational 1U CubeSat Architecture Using Plug-and-Play Avionics

    Science.gov (United States)

    Frost, Chad

    2015-01-01

    Mission Objectives: build a 1U cubesat within 6 months from kickoff to launch. Demonstrate and evaluate the Space Plug-and-Play avionics hardware and software from ÅAC Microtec; investigate both Iridium and Orbcomm intersatellite communication as a method of eliminating the requirement for a physical ground station in Nano satellite missions; demonstrate the capabilities of the JAXA J-SSOD aboard the ISS, and be one of the first cubesats to be deployed from the ISS.

  8. Expanding AirSTAR Capability for Flight Research in an Existing Avionics Design

    Science.gov (United States)

    Laughter, Sean A.

    2012-01-01

    The NASA Airborne Subscale Transport Aircraft Research (AirSTAR) project is an Unmanned Aerial Systems (UAS) test bed for experimental flight control laws and vehicle dynamics research. During its development, the test bed has gone through a number of system permutations, each meant to add functionality to the concept of operations of the system. This enabled the build-up of not only the system itself, but also the support infrastructure and processes necessary to support flight operations. These permutations were grouped into project phases and the move from Phase-III to Phase-IV was marked by a significant increase in research capability and necessary safety systems due to the integration of an Internal Pilot into the control system chain already established for the External Pilot. The major system changes in Phase-IV operations necessitated a new safety and failsafe system to properly integrate both the Internal and External Pilots and to meet acceptable project safety margins. This work involved retrofitting an existing data system into the evolved concept of operations. Moving from the first Phase-IV aircraft to the dynamically scaled aircraft further involved restructuring the system to better guard against electromagnetic interference (EMI), and the entire avionics wiring harness was redesigned in order to facilitate better maintenance and access to onboard electronics. This retrofit and harness re-design will be explored and how it integrates with the evolved Phase-IV operations.

  9. A Wideband Satcom Based Avionics Network with CDMA Uplink and TDM Downlink

    Science.gov (United States)

    Agrawal, D.; Johnson, B. S.; Madhow, U.; Ramchandran, K.; Chun, K. S.

    2000-01-01

    The purpose of this paper is to describe some key technical ideas behind our vision of a future satcom based digital communication network for avionics applications The key features of our design are as follows: (a) Packetized transmission to permit efficient use of system resources for multimedia traffic; (b) A time division multiplexed (TDM) satellite downlink whose physical layer is designed to operate the satellite link at maximum power efficiency. We show how powerful turbo codes (invented originally for linear modulation) can be used with nonlinear constant envelope modulation, thus permitting the satellite amplifier to operate in a power efficient nonlinear regime; (c) A code division multiple access (CDMA) satellite uplink, which permits efficient access to the satellite from multiple asynchronous users. Closed loop power control is difficult for bursty packetized traffic, especially given the large round trip delay to the satellite. We show how adaptive interference suppression techniques can be used to deal with the ensuing near-far problem; (d) Joint source-channel coding techniques are required both at the physical and the data transport layer to optimize the end-to-end performance. We describe a novel approach to multiple description image encoding at the data transport layer in this paper.

  10. Self-Contained Avionics Sensing and Flight Control System for Small Unmanned Aerial Vehicle

    Science.gov (United States)

    Shams, Qamar A. (Inventor); Logan, Michael J. (Inventor); Fox, Robert L. (Inventor); Fox, legal representative, Christopher L. (Inventor); Fox, legal representative, Melanie L. (Inventor); Ingham, John C. (Inventor); Laughter, Sean A. (Inventor); Kuhn, III, Theodore R. (Inventor); Adams, James K. (Inventor); Babel, III, Walter C. (Inventor)

    2011-01-01

    A self-contained avionics sensing and flight control system is provided for an unmanned aerial vehicle (UAV). The system includes sensors for sensing flight control parameters and surveillance parameters, and a Global Positioning System (GPS) receiver. Flight control parameters and location signals are processed to generate flight control signals. A Field Programmable Gate Array (FPGA) is configured to provide a look-up table storing sets of values with each set being associated with a servo mechanism mounted on the UAV and with each value in each set indicating a unique duty cycle for the servo mechanism associated therewith. Each value in each set is further indexed to a bit position indicative of a unique percentage of a maximum duty cycle for the servo mechanism associated therewith. The FPGA is further configured to provide a plurality of pulse width modulation (PWM) generators coupled to the look-up table. Each PWM generator is associated with and adapted to be coupled to one of the servo mechanisms.

  11. Condensate minerals from a burning coal-waste heap in Avion, Northern France

    Energy Technology Data Exchange (ETDEWEB)

    Masalehdani, M.N.N.; Mees, F.; Dubois, M.; Coquinot, Y.; Potdevin, J.L.; Fialin, M.; Blanc-Valleron, M.M. [University of Lille 1, Villeneuve Dascq (France)

    2009-06-15

    A coal-waste heap in Avion, northern France, that has been undergoing subsurface combustion for several decades, is marked by the occurrence of efflorescences at combustion sites where gas and water vapor escape from surficial cracks and vents. Analysis of the efflorescences show that twenty different species of mineral are present, comprising various sulfates, as well as halides and native sulfur. The constituents needed for the formation of these minerals are ultimately derived from the heap of coalmine waste, composed mainly of pyrite-bearing carbonaceous shale, coal and minor amounts of sandstone. They may be partly released by acid weathering of waste-heap materials prior to combustion, but largely by thermal decomposition and oxidation of those materials during combustion processes. Formation of the efflorescences near gas-discharge zones indicates transport of constituent to those zones from the inner part of the waste heap, which can occur in the gas phase for some elements (S, N, H and Cl), but would require droplets of water vapor as carriers for most cations. Interaction between condensate solutions and the local debris at the surface of the waste heap may also contribute to cations input prior to the formation of secondary minerals. Most minerals formed from a liquid phase along the rock-debris surface at low temperatures (T {<=}100 {sup o}C), as confirmed by the occurrence of fluid inclusions. Only salammoniac, native sulfur and mascagnite (where crystallized as a monocrystalline phase) were formed directly from a gas phase. The coal-waste heap shows great variations in mineral assemblages among sampling sites, which must be related to variations in waste composition and in conditions at the level at which the elements are released and where mineral formation takes place.

  12. Managing Complexity in the MSL/Curiosity Entry, Descent, and Landing Flight Software and Avionics Verification and Validation Campaign

    Science.gov (United States)

    Stehura, Aaron; Rozek, Matthew

    2013-01-01

    The complexity of the Mars Science Laboratory (MSL) mission presented the Entry, Descent, and Landing systems engineering team with many challenges in its Verification and Validation (V&V) campaign. This paper describes some of the logistical hurdles related to managing a complex set of requirements, test venues, test objectives, and analysis products in the implementation of a specific portion of the overall V&V program to test the interaction of flight software with the MSL avionics suite. Application-specific solutions to these problems are presented herein, which can be generalized to other space missions and to similar formidable systems engineering problems.

  13. Convertisseur DC-DC isolé fort courant à fort rapport d'élévation pour l'avion plus électrique

    OpenAIRE

    Brunello, Julien; FOREST, François; HUSELSTEIN, Jean-Jacques; ASFAUX, Pascal

    2016-01-01

    International audience; L'avion plus électrique est une cible de développement majeure chez les constructeurs aéronautiques. Cette évolution implique la conception de systèmes de conversion d'énergie électrique fiables, modulaires et performants, en particulier du point de vue de la puissance spécifique. Ces systèmes de conversion sont souvent couplés avec des systèmes de stockage d'énergie (type batterie) permettant dans certaines situations de rendre l'avion énergétiquement autonome grâce à...

  14. Investigation of HZETRN 2010 as a Tool for Single Event Effect Qualification of Avionics Systems - Part II

    Science.gov (United States)

    Rojdev, Kristina; Koontz, Steve; Reddell, Brandon; Atwell, William; Boeder, Paul

    2015-01-01

    An accurate prediction of spacecraft avionics single event effect (SEE) radiation susceptibility is key to ensuring a safe and reliable vehicle. This is particularly important for long-duration deep space missions for human exploration where there is little or no chance for a quick emergency return to Earth. Monte Carlo nuclear reaction and transport codes such as FLUKA can be used to generate very accurate models of the expected in-flight radiation environment for SEE analyses. A major downside to using a Monte Carlo-based code is that the run times can be very long (on the order of days). A more popular choice for SEE calculations is the CREME96 deterministic code, which offers significantly shorter run times (on the order of seconds). However, CREME96, though fast and easy to use, has not been updated in several years and underestimates secondary particle shower effects in spacecraft structural shielding mass. Another modeling option to consider is the deterministic code HZETRN 20104, which includes updates to address secondary particle shower effects more accurately. This paper builds on previous work by Rojdev, et al. to compare the use of HZETRN 2010 against CREME96 as a tool to verify spacecraft avionics system reliability in a space flight SEE environment. This paper will discuss modifications made to HZETRN 2010 to improve its performance for calculating SEE rates and compare results with both in-flight SEE rates and other calculation methods.

  15. Multi-objective optimisation of aircraft flight trajectories in the ATM and avionics context

    Science.gov (United States)

    Gardi, Alessandro; Sabatini, Roberto; Ramasamy, Subramanian

    2016-05-01

    The continuous increase of air transport demand worldwide and the push for a more economically viable and environmentally sustainable aviation are driving significant evolutions of aircraft, airspace and airport systems design and operations. Although extensive research has been performed on the optimisation of aircraft trajectories and very efficient algorithms were widely adopted for the optimisation of vertical flight profiles, it is only in the last few years that higher levels of automation were proposed for integrated flight planning and re-routing functionalities of innovative Communication Navigation and Surveillance/Air Traffic Management (CNS/ATM) and Avionics (CNS+A) systems. In this context, the implementation of additional environmental targets and of multiple operational constraints introduces the need to efficiently deal with multiple objectives as part of the trajectory optimisation algorithm. This article provides a comprehensive review of Multi-Objective Trajectory Optimisation (MOTO) techniques for transport aircraft flight operations, with a special focus on the recent advances introduced in the CNS+A research context. In the first section, a brief introduction is given, together with an overview of the main international research initiatives where this topic has been studied, and the problem statement is provided. The second section introduces the mathematical formulation and the third section reviews the numerical solution techniques, including discretisation and optimisation methods for the specific problem formulated. The fourth section summarises the strategies to articulate the preferences and to select optimal trajectories when multiple conflicting objectives are introduced. The fifth section introduces a number of models defining the optimality criteria and constraints typically adopted in MOTO studies, including fuel consumption, air pollutant and noise emissions, operational costs, condensation trails, airspace and airport operations

  16. Military Curriculum Materials for Vocational and Technical Education. Avionics Instrument Systems Specialist. POI C3ABR32531 000. Classroom Course 2-7.

    Science.gov (United States)

    Ohio State Univ., Columbus. National Center for Research in Vocational Education.

    This high school-postsecondary-level course for avionics instrument systems specialist is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. A plan of instruction outlines five blocks of instruction (281 hours of instruction). Block 1,…

  17. Relationships Between Design Characteristics of Avionics Subsystems and Training Cost, Training Difficulty, and Job Performance. Final Report, Covering Activity from 1 July 1971 Through 1 September 1972.

    Science.gov (United States)

    Lintz, Larry M.; And Others

    A study investigated the relationship between avionics subsystem design characteristics and training time, training cost, and job performance. A list of design variables believed to affect training and job performance was established and supplemented with personnel variables, including aptitude test scores and the amount of training and…

  18. Space shuttle orbiter avionics software: Post review report for the entry FACI (First Article Configuration Inspection). [including orbital flight tests integrated system

    Science.gov (United States)

    Markos, H.

    1978-01-01

    Status of the computer programs dealing with space shuttle orbiter avionics is reported. Specific topics covered include: delivery status; SSW software; SM software; DL software; GNC software; level 3/4 testing; level 5 testing; performance analysis, SDL readiness for entry first article configuration inspection; and verification assessment.

  19. Space tug point design study. Volume 3: Design definition. Part 1: Propulsion and mechanical, avionics, thermal control and electrical power subsystems

    Science.gov (United States)

    1973-01-01

    A study was conducted to determine the configuration and performance of a space tug. Details of the space tug systems are presented to include: (1) propulsion systems, (2) avionics, (3) thermal control, and (4) electric power subsystems. The data generated include engineering drawings, schematics, subsystem operation, and component description. Various options investigated and the rational for the point design selection are analyzed.

  20. Applying emerging digital video interface standards to airborne avionics sensor and digital map integrations: benefits outweigh the initial costs

    Science.gov (United States)

    Kuehl, C. Stephen

    1996-06-01

    Video signal system performance can be compromised in a military aircraft cockpit management system (CMS) with the tailoring of vintage Electronics Industries Association (EIA) RS170 and RS343A video interface standards. Video analog interfaces degrade when induced system noise is present. Further signal degradation has been traditionally associated with signal data conversions between avionics sensor outputs and the cockpit display system. If the CMS engineering process is not carefully applied during the avionics video and computing architecture development, extensive and costly redesign will occur when visual sensor technology upgrades are incorporated. Close monitoring and technical involvement in video standards groups provides the knowledge-base necessary for avionic systems engineering organizations to architect adaptable and extendible cockpit management systems. With the Federal Communications Commission (FCC) in the process of adopting the Digital HDTV Grand Alliance System standard proposed by the Advanced Television Systems Committee (ATSC), the entertainment and telecommunications industries are adopting and supporting the emergence of new serial/parallel digital video interfaces and data compression standards that will drastically alter present NTSC-M video processing architectures. The re-engineering of the U.S. Broadcasting system must initially preserve the electronic equipment wiring networks within broadcast facilities to make the transition to HDTV affordable. International committee activities in technical forums like ITU-R (former CCIR), ANSI/SMPTE, IEEE, and ISO/IEC are establishing global consensus on video signal parameterizations that support a smooth transition from existing analog based broadcasting facilities to fully digital computerized systems. An opportunity exists for implementing these new video interface standards over existing video coax/triax cabling in military aircraft cockpit management systems. Reductions in signal

  1. Simulation modeling based method for choosing an effective set of fault tolerance mechanisms for real-time avionics systems

    Science.gov (United States)

    Bakhmurov, A. G.; Balashov, V. V.; Glonina, A. B.; Pashkov, V. N.; Smeliansky, R. L.; Volkanov, D. Yu.

    2013-12-01

    In this paper, the reliability allocation problem (RAP) for real-time avionics systems (RTAS) is considered. The proposed method for solving this problem consists of two steps: (i) creation of an RTAS simulation model at the necessary level of abstraction and (ii) application of metaheuristic algorithm to find an optimal solution (i. e., to choose an optimal set of fault tolerance techniques). When during the algorithm execution it is necessary to measure the execution time of some software components, the simulation modeling is applied. The procedure of simulation modeling also consists of the following steps: automatic construction of simulation model of the RTAS configuration and running this model in a simulation environment to measure the required time. This method was implemented as an experimental software tool. The tool works in cooperation with DYANA simulation environment. The results of experiments with the implemented method are presented. Finally, future plans for development of the presented method and tool are briefly described.

  2. Avionics Interface Data Summaries: A-10A, EF-111A, F-4E, F-4G, F-15A, F- 16A, F-111A, F-111E, F-111F, RF-4C

    Science.gov (United States)

    1979-10-01

    Avionics Compartments Table 6-1 A-10A Avionics Configuration Data: 6-2 VHF/AM Radio System, Wilcox 807A (AN/ARC-134) NSN: 5821-00-937-1087 vii LIST OF...scalte eflection for aDorcacn flignt nrodes. nde o f erence: Desired approach course 4:n t Direction Sense: Fly right (+ right) S1eCtrical

  3. Combat Aircraft Noise held in Bonn, Germany on 23-25 October 1991 (Le Bruit Genere par les Avions de Combat)

    Science.gov (United States)

    1992-04-01

    sollicitations naturelles (vent) ou Ilides A I& vie moderns (trafic noutier), loa bangs focalisis no peuvent avoir d’action our des structures sainos ot...oxpdrimentalement. Los dimensions do ha zono affectdo par Ia focalisation sont naturellement dipendantos do l’acc~ldration de l’avion ;pour fixer lee iddos...du biung dipalsant 5. Catte valour panalt itre tan minimum compta tanu do Is difficulti qulil y a A placer un capteur do assure auffisammont proche

  4. Prediction de l’Eclatement Tourbillonnaire sur les Ailes Delta d’Avions Militaires (CFD Prediction of Vortex Breakdown on Delta Wings for Military Aircraft)

    Science.gov (United States)

    2003-03-01

    visualisation de la pression totale tirée du calcul k-ε en lois de paroi. La croissance brusque des cœurs tourbillonnaires dès l’apex est le signe d’un...d’avions militaires. REMERCIEMENTS Ces travaux ont été réalisés dans le cadre d’études sous financement du SPAé. REFERENCES [1] Caractérisation et

  5. Neutron Radiation Tolerance of Two Benchmark Thiophene-Based Conjugated Polymers: the Importance of Crystallinity for Organic Avionics

    Science.gov (United States)

    Paternò, G. M.; Robbiano, V.; Fraser, K. J.; Frost, C.; García Sakai, V.; Cacialli, F.

    2017-01-01

    Aviation and space applications can benefit significantly from lightweight organic electronics, now spanning from displays to logics, because of the vital importance of minimising payload (size and mass). It is thus crucial to assess the damage caused to such materials by cosmic rays and neutrons, which pose a variety of hazards through atomic displacements following neutron-nucleus collisions. Here we report the first study of the neutron radiation tolerance of two poly(thiophene)s-based organic semiconductors: poly(3-hexylthiophene-2,5-diyl), P3HT, and the liquid-crystalline poly(2,5-bis (3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene), PBTTT. We combine spectroscopic investigations with characterisation of intrinsic charge mobility to show that PBTTT exhibits significantly higher tolerance than P3HT. We explain this in terms of a superior chemical, structural and conformational stability of PBTTT, which can be ascribed to its higher crystallinity, in turn induced by a combination of molecular design features. Our approach can be used to develop design strategies for better neutron radiation-tolerant materials, thus paving the way for organic semiconductors to enter avionics and space applications.

  6. Diseño de una planta de reciclaje de los productos de deshielo para aviones en el Aeropuerto Adolfo Suárez

    OpenAIRE

    Fuentes Román, Juan Diego

    2016-01-01

    El proceso para el deshielo de los aviones en temporada de invierno en el Aeropuerto Adolfo Suárez de Madrid consiste en la aplicación de una mezcla de propilenglicol, agua y aditivos (sufractantes y anticorrosivos) sobre la superficie del avión a descongelar mientras está en la pista de aterrizaje. Una parte de estas mezclas cae al suelo junto con el agua del hielo fundido, lo que conlleva una contaminación al medio, a parte de la pérdida de propilenglicol que puede ser reu...

  7. Application of GLUT in SCADE Avionics Display Control Software Design%GLUT在基于SCADE航电显控软件设计中的应用

    Institute of Scientific and Technical Information of China (English)

    傅亮; 潘明罕

    2012-01-01

      GLUT工具包独立于窗口系统,对窗口和事件的管理工作进行标准化和简化。本文介绍了GLUT程序框架的构建,解析了GLUT回调函数设计思想,阐述了SCADE模型驱动航电显控软件模型嵌入GLUT构架的构建步骤,实现了SCADE航电显控软件模型到Windows平台环境下实际应用程序的转换。%  GLUT toolkit is independent of window system, and the management of graphic windows and events is standardized and simplified by it. This paper introduces the construction of GLUT framework and analyzes the design idea of GLUT callback function, and it expounds construction steps of embedding models of SCADE model-driven avionics display control software in GLUT framework,. it is a successful conversion from models of SCADE avionics display control software to application on Windows platform.

  8. Light weight, high-speed, and self-powered wireless fiber optic sensor (WiFOS) structural health monitor system for avionics and aerospace environments

    Science.gov (United States)

    Mendoza, Edgar A.; Kempen, Cornelia; Sun, Sunjian; Esterkin, Yan

    2014-09-01

    This paper describes recent progress towards the development of an innovative light weight, high-speed, and selfpowered wireless fiber optic sensor (WiFOS™) structural health monitor system suitable for the onboard and in-flight unattended detection, localization, and classification of load, fatigue, and structural damage in advanced composite materials commonly used in avionics and aerospace systems. The WiFOS™ system is based on ROI's advancements on monolithic photonic integrated circuit microchip technology, integrated with smart power management, on-board data processing, wireless data transmission optoelectronics, and self-power using energy harvesting tools such as solar, vibration, thermoelectric, and magneto-electric. The self-powered, wireless WiFOS™ system offers a versatile and powerful SHM tool to enhance the reliability and safety of avionics platforms, jet fighters, helicopters, commercial aircraft that use lightweight composite material structures, by providing comprehensive information about the structural integrity of the structure from a large number of locations. Immediate SHM applications are found in rotorcraft and aircraft, ships, submarines, and in next generation weapon systems, and in commercial oil and petrochemical, aerospace industries, civil structures, power utilities, portable medical devices, and biotechnology, homeland security and a wide spectrum of other applications.

  9. 新一代航空电子综合化及预测与健康管理技术%Technologies of New Generation Avionics Integration and Prognostics and Health Management

    Institute of Scientific and Technical Information of China (English)

    赵宁社; 翟正军; 王国庆

    2011-01-01

    Based on the introduction of the evolution of avionics systems, the main features of the new generation integrated avionics system are analyzed and the key technology of avionics PHM are probed deeply, including physical-of-failure(POF), stress damage assessment, failure precursor and canary. Moreover, the key technology and applications of the PHM-related information fusion, artificial intelligence, data mining and prognostics are thoroughly analyzed. Finally, the architecture of new generation integrated modular avionics system and PHM are researched and given.%在介绍航空电子系统发展演变历史的基础上,分析了新一代综合化航电系统的主要特征,深入探讨了航空电子预测与健康管理(PHM)的关键技术,包括失效机理分析、应力损伤评估、故障先兆以及预警电路(canary)4个类别,详细分析了PHM相关的信息融合、人工智能、数据挖掘与预测等技术的实现方法与应用,研究并给出了新一代综合模块化航空电子系统与PHM的体系架构.

  10. 综合化航空电子分区隔离的建模与设计方法%Partition modeling and design in integrated avionics

    Institute of Scientific and Technical Information of China (English)

    李昕颖; 熊华钢

    2011-01-01

    With the development of integrated modular avionics, partition management has become a necessary technology. To solve the partition management problem under safety critical system constraint, through studying ARINC653 criterion, hierarchical partition architecture model was determined which implement partitioning between applications of different safety critical levels. To guarantee timing constraints and predictability of avionics, a two-level partition schedule model was proposed in which the operation system adopts round-robin scheduling strategy and each individual partition adopts rate monotonic priority scheduling strategy. In addition, for the sehedulable analysis problem of partition tasks, on the premise that fully guarantee real time characteristics of integrated modular avionics systems, a design method for partition critical parameters was developed. The least upper bounds of the system schedulable utilization for the method was derived and formally proved. Computer simulation results indicate this approach can be used to admit much more systems load,while guarantee real time properties.%分区技术是航空电子系统综合化模块化发展中不可缺少的技术.针对航空电子系统安全关键性的要求,基于ARINC653标准,提出了分层分区的体系结构模型,该模型实现了不同安全关键级别应用软件之间的隔离.为了满足航空电子系统强实时可预测性的约束,双层分区模型中系统层采用轮转调度策略,区间层采用单调速率调度策略.然后对分区任务进行可调度分析,在充分保证航空电子系统强实时的前提下,提出了分区关键参数的设计方法,并推导了最坏情况下的系统可调度利用率.计算机仿真结果表明,该方法在保证实时性的同时,能支持更多的系统负载,具有优越性.

  11. Avionics Design for Reliability

    Science.gov (United States)

    1976-03-01

    Consultant P.O. Box 181, Hazelwood. Missouri 63042, U.S.A. soup ""•.• • CONTENTS Page LIST OF SPEAKERS iii INTRODUCTION AND OVERVIEW-RELIABILITY UNDER... primordial , d’autant plus quo dans co cam ia procg- dure do st~lection en fiabilitg eat assez peu efficaco. La ripartition des pannes suit

  12. Avionic Radome Materials

    Science.gov (United States)

    1974-10-01

    UK Dr S.Bomar, Main Contributor Georgia Institute of Technology, Atlanta, USA Dr O.Tornani Aeritalia- Centro Elettronico Avio - Torino, Italy Mr A.Cohen...avoid cracking during sintering has been identified. A second fabrication approach is to slip-cast the skins, machine comercial foam blocks to the

  13. Avionics Data Base.

    Science.gov (United States)

    1985-01-01

    CONTAINED BATTERIES, 14VDC CIGARETTE LIGHTER OUT- LET OR 120/230VAC WALL SOCKET; PORTABLE COM PACK W/ RECHARGEBLE BATTERY, ANTENNA SPEAKR & ADAPTER...82171-L PMPL.IFIER PROYIDING PASSE.NGFE: ADDRESS SYS-T EN W/ E- LECTRONIC CHI1ES: S7D SINGLE CHIME FOR FASTEN SEA7 BEL-TS. NO &M~N PAGE ALER7; 12 W OL

  14. Avionics Corrosion Control Study

    Science.gov (United States)

    1974-01-01

    found at seacoast (harsn) environnents is the most destructive. Differences in electrolte concentration and oxygen concentration promote corrosion...against corrosion by acting as moisture and gas barriers. CMCVIT B0.4ID *COATINGS Polyurethane’s, cprxies, silicones, and polystyrenes are the most

  15. Integrated Circuits for Avionics

    Science.gov (United States)

    1989-10-01

    Filters A linear phase filter is one with a phase shift which is a linear function of frequency resulting in a constant time delay for all frequency...components. For a linear phase filter , the coefficients are symmetrical which permits a realization that is more efficient than the direct form. Since h(i...h(N- I -i), the implementation of a linear phase filter can be obtained as shown in Fig. 2.3. By taking advantage of the symmetry of coefficients

  16. Software for Avionics.

    Science.gov (United States)

    1983-01-01

    documentaires iaborga A laide des outils (fiament de apficifications, de conception, code source de programme, jeu de test,...). Le documentaliate...docissentaires conatituts par les Editions ponctuelles. Grace A cet outil, la ges- tion de Is "structure" documentaire eat totalament indfipendante du...tailie. les besoins spcifiques doivent tre aussi bien tenus qu’en LTR V2 puisqu’on a veill a offrir les mnmes services et ajouter des facilit~s

  17. 改进的航电网络模型仿真与分析%Improved Model of Avionics Network Simulation and Analysis

    Institute of Scientific and Technical Information of China (English)

    王慧文; 张延园; 林奕; 贾鑫

    2011-01-01

    研究了光纤通道技术的应用,使用OPNET建立了基于光纤通道的航电网络,并且按照协议标准建立了终端节点和交换机节点的有限状态机模型.交换机使用组合输入交叉排队(Combined Input-Crosspoint Queueing,CICQ)结构,在输入端口和输出端口使用差值轮询调度( Deficit Round Robin,DRR)算法,然后使用OPNET进行仿真,分析了网络的端到端延迟和吞吐量.结果显示在航电网络中,使用DRR调度算法,能够显著降低数据包的端到端延迟,满足一定的实时性,提高网络的吞吐量,表明此模型适合航电网络.%The application of fiber channel was studied, a Fiber Channel-based Avionics Network was established by OPNET, according to protocol standards the finite state machine models of terminal nodes and switching node were established. The switch structure was CICQ, using DRR algorithm in input and output ports. Then the network was simulated by OPNET, end to end delay and network throughout were studied. The results show that using the DRR scheduling algorithm can reduce end to end packet delay, meet real time request, increase network throughout, so this model is suitable for avionics network.

  18. Maintenance Decision-making of the Unmanned Machine Avionics System Based on FMECA%基于FMECA方法的无人机航电系统维修决策

    Institute of Scientific and Technical Information of China (English)

    窦赛; 陈国顺; 吕艳梅

    2011-01-01

    本文首先介绍了无人机航电系统的功能结构,然后,分析了对无人机航电系统进行FMECA分析的方法;最后,以舵机实例分析结果为依据,研究分析了航电系统的维修工作内容制定、预防性维修间隔期确定和预防性维修工作组合等FEMCA关键技术.%Firstly, this text introduced the function and the main structure of unmanned machine avionics system. Then, it analyzed how to carry on FMECA analysis to the unmanned machine avionics system. At the end, on the basis of the analytic results of the steering engine in the unmanned aerial vehicle system, this text analyzed how to constitute the maintenance work of the avionics system, how to confirm the preventive maintenance interval and how to combine different maintenance works, which are the key of FMECA.

  19. A Scheduling Method for Avionics WDM Networks%一种航空电子WDM网络消息调度方法

    Institute of Scientific and Technical Information of China (English)

    宋丽茹; 周立; 何锋; 熊华钢

    2011-01-01

    针对WDM(wavelength division multiplexing)广播选择型网络结构,提出了一种高信道利用率的航空电子周期和非周期消息的实时调度方法MMAS(multichannel multielass avionics scheduling).对周期消息,采用多信道静态轮转调度策略,其中RL(round length)轮转参数优化方法,可以有效地提高信道负载率,减少带宽碎片;同时提出的多信道消息分配策略能有效减少消息拆分次数.对非周期消息,采用动态预留的多信道调度策略,提出了基于周期消息剩余带宽循环序列矩阵的方法提高了信道利用率,提出了非周期实时消息的准入条件.最后,一个具体的算例验证了MMAS中周期消息RL优化方法、消息分配方法以及非周期消息剩余带宽调度策略.结果表明,周期消息分配方法能降低消息的拆分次数,RL优化设计方法和非周期剩余带宽的调度方法能有效提高信道利用率水平.%On the basis of the WDM broadcasting network structure, a real time scheduling method for avionics periodic or aperiodic real time messages named MMAS (multichannel multiclass avionics scheduling) was proposed to improve the utilization of the channels. For the periodic real time messages, the multichannel static round robin scheduling method was applied, in which the RL parameter optimization strategy was involved to increase the load rate of channels and decrease the fragments of the bandwidth at the same time. The message allocation method was provided to reduce the splitting times of the messages. For the aperiodic real time messages, the dynamic reservation multichannel scheduling method was adopted. The surplus bandwidths of periodic messages in every period were reused to improve the utilization of the channels. Then the admitting control condition for aperiodic messages was presented. The evaluation of an example verifies that the utilization of the channels could be efficiently increased by using the RL parameter

  20. 基于模型驱动的航电系统安全性分析%Safety Analysis for Avionics System Based on Model Driven

    Institute of Scientific and Technical Information of China (English)

    邢逆舟; 王立松

    2015-01-01

    针对综合化航空电子系统安全性分析存在的失效模式完备性和动态失效问题以及数据一致性问题,将航电系统分为应用操作层、功能层和资源层3个层次,采用形式化方法分别对每个层次进行建模,利用模型转换技术实现3个层次之间的语义转换,确保语义的一致性。利用AADL语言对系统应用操作和功能层建模,实现对应用操作模式完备性检查,利用AltaRica语言对系统的异常行为建模,实现对系统的动态失效问题分析。本文以飞机自动驾驶系统为例,利用AADL建模工具Osate实现对应用操作模式的分析,借助于基于AltaRica语言的SimFia工具对其安全性进行分析,结果验证了所提出方法的有效性和实用性。%This paper introduces a new model-based method for safety analysis to address the problem of failure modes integrity , dynamic failure and data consistency that currently encountered in safety assessments for integrated avionics system .The method model integrated avionics system hierarchically with layers of application operation , function and resource .It simplifies a large part of the analysis , the development of fault trees , and can guarantee the consistency of results .AADL language is used to model application layer to check the integrity of operations modes and AltaRica is used to model dysfunction of system to solve the prob -lem of dynamic failure .The efficiency and practicality of the method is illustrated by analyzing safety of auto pilot system through Osate tool which used for analyzing operational modes of application and SimFia tool which used for safety analysis .

  1. Successful marriage: American Panel Corporation and LG Philips LCD custom-designed avionic, shipboard, and rugged ground vehicle display modules from a consumer-oriented fabrication facility

    Science.gov (United States)

    Dunn, William; Garrett, Kimberly S.

    2001-09-01

    American panel corporation (APC) believes the use of custom designed (instead of ruggedized commercial) AMLCD cells is the only way to meet the specific environmental and performance requirements of the military/commercial avionic, shipboard and rugged ground vehicle markets. The APC/LG.Philips LCD (LG) custom approach mitigates risk to the end-user in many ways. As a part of the APC/LG long- term agreement LG has committed to provide module level equivalent (form, fit and function equivalent) panels for a period of ten years. No other commercial glass manufacturer has provided such an agreement. With the use of LG's commercial production manufacturing capabilities, APC/LG can provide the opportunity to procure a lifetime buy for any program with delivery of the entire lot within six months of order placement. This ensures that the entire production program will receive identical glass for every unit. The APC/LG relationship works where others have failed due to the number of years spent cultivating the mutual trust and respect necessary for establishing such a partnership, LG's interest in capturing the market share of this niche application, and the magnitude of the initial up-front investment by APC in engineering, tooling, facilities, production equipment, and LCD cell inventory.

  2. Research and Application of Avionic Software System Based on MVC Architecture%基于MVC架构的航电系统软件研究与应用

    Institute of Scientific and Technical Information of China (English)

    郑凤; 昝济国

    2013-01-01

      针对大规模复杂航电系统软件的设计和开发,引入MVC(模型-视图-控制)的软件体系架构和设计模式,对软件行为主体进行持续抽象和封装,并在项目开发过程中迭代应用。研究结果证明,采用 MVC 架构很好的提高了软件设计和开发的可靠性、可扩展性和可复用性,增强了应用系统软件架构的灵活性和适应性。%To design and develop large-scale and complex avionic software system, we introduce the architecture and design pattern of MVC (mode-view-controller), in order to build abstraction and encapsulation on software actor. We use this iteratively during the course of item development. The results demonstrate that the MVC architecture is more reliable,flexible,dynamic and is reusable for software design and development, improving the agility and adaptability of software architecture.

  3. Helicopter Field Testing of NASA's Autonomous Landing and Hazard Avoidance Technology (ALHAT) System fully Integrated with the Morpheus Vertical Test Bed Avionics

    Science.gov (United States)

    Epp, Chirold D.; Robertson, Edward A.; Ruthishauser, David K.

    2013-01-01

    The Autonomous Landing and Hazard Avoidance Technology (ALHAT) Project was chartered to develop and mature to a Technology Readiness Level (TRL) of six an autonomous system combining guidance, navigation and control with real-time terrain sensing and recognition functions for crewed, cargo, and robotic planetary landing vehicles. The ALHAT System must be capable of identifying and avoiding surface hazards to enable a safe and accurate landing to within tens of meters of designated and certified landing sites anywhere on a planetary surface under any lighting conditions. This is accomplished with the core sensing functions of the ALHAT system: Terrain Relative Navigation (TRN), Hazard Detection and Avoidance (HDA), and Hazard Relative Navigation (HRN). The NASA plan for the ALHAT technology is to perform the TRL6 closed loop demonstration on the Morpheus Vertical Test Bed (VTB). The first Morpheus vehicle was lost in August of 2012 during free-flight testing at Kennedy Space Center (KSC), so the decision was made to perform a helicopter test of the integrated ALHAT System with the Morpheus avionics over the ALHAT planetary hazard field at KSC. The KSC helicopter tests included flight profiles approximating planetary approaches, with the entire ALHAT system interfaced with all appropriate Morpheus subsystems and operated in real-time. During these helicopter flights, the ALHAT system imaged the simulated lunar terrain constructed in FY2012 to support ALHAT/Morpheus testing at KSC. To the best of our knowledge, this represents the highest fidelity testing of a system of this kind to date. During this helicopter testing, two new Morpheus landers were under construction at the Johnson Space Center to support the objective of an integrated ALHAT/Morpheus free-flight demonstration. This paper provides an overview of this helicopter flight test activity, including results and lessons learned, and also provides an overview of recent integrated testing of ALHAT on the second

  4. Design of Hard Real-Time Scheduling Algorithm in Avionic Wavelength Division Multiplexing Network%机载波分复用网络强实时性调度算法设计

    Institute of Scientific and Technical Information of China (English)

    黄金; 许渤; 凌云; 邱昆

    2013-01-01

    与传统的商业网络不同,航空机载波分复用网络要求强实时性以保证消息的传输性能.实时调度算法是保证机载网络中消息传输性能的关键.针对机载波分复用网络的实时性要求,采用实时通信中的周期性任务模型,提出了满足机载波分复用网络实时性要求的加权轮转调度算法,其中轮转周期的选择、权值匹配方法和多信道分配方法是影响调度算法参数设计的重要过程.通过多信道分配方法有效减少了消息拆分次数;结合实例比较确定了算法中消息分配权值的计算方法;并指出了最优轮转周期无法保证最小的消息延迟时间率.研究结果对机载波分复用网络的工程设计与优化有一定的指导意义.%Different from the commercial applications, the avionic wavelength division multiplexing (WDM) network lays much emphasis on hard real-time characteristics. The real-time scheduling algorithm is a key issue to ensure the message transmission performance. According to the real-time communication requirement of avionic WDM network and the traffic characteristics of the avionic network, a weighted round robin scheduling algorithm is proposed based on the periodic task model of real-time communication to guarantee hard real-time transmission in an airborne WDM network, which is comprised of the rotation cycle selection, weights assignment scheme and multi-channel allocation method. Among them, multi-channel allocation method efficiently reduces the splitting times of the message-, combined with examples, message weights assignment scheme is determined and it is pointed out that the optimal rotation cycle cannot guarantee the minimum message delay ratio. Research results are meaningful for the design of real-time scheduling parameters and the current practice of avionic WDM network.

  5. Application d'une technique de modelisation aerodynamique conceptuelle sur la simulation d'un pilote automatique a commande optimale pour un avion d'affaires

    Science.gov (United States)

    Pollender-Moreau, Olivier

    Ce document présente, dans le cadre d'un contexte conceptuel, une méthode d'enchaînement servant à faire le lien entre les différentes étapes qui permettent de réaliser la simulation d'un aéronef à partir de ses données géométriques et de ses propriétés massiques. En utilisant le cas de l'avion d'affaires Hawker 800XP de la compagnie Hawker Beechcraft, on démontre, via des données, un processus de traitement par lots et une plate-forme de simulation, comment (1) modéliser la géométrie d'un aéronef en plusieurs surfaces, (2) calculer les forces aérodynamiques selon une technique connue sous le nom de Vortex Lattice Method, (3) construire un modèle de vol servant à la simulation des aéronefs pour leur enveloppe de vol en ajoutant des fonctions supplémentaires, (4) construire un modèle de turbosoufflante simplifié, (5) développer un algorithme d'équilibre (trim) du mouvement longitudinal, (6) développer des algorithmes de contrôle à commande moderne, (7) développer certaines fonctions d'un système de pilotage automatique, et (8) rassembler le tout sous une même plate-forme de simulation. Afin de supporter ce travail, une application publique Matlab, connue sous le nom de Tornado, est utilisée conjointement avec d'autres fonctions pour la conception du modèle de vol aérodynamique. D'ailleurs, il sera démontré que le modèle de vol, quoiqu'il soit quand même crédible, ne concorde pas tout à fait avec les données de référence. Par contre, puisque le modèle des moteurs fonctionne bien, que l'algorithme d'équilibrage du mouvement longitudinal fonctionne bien et que les pôles des systèmes dynamiques concordent avec la littérature, les tests dynamiques effectués au sein de la plate-forme de simulation permettent d'obtenir des résultats fonctionnels et crédibles. D'ailleurs, deux systèmes d'augmentation de la stabilité basés sur la méthode de contrôle moderne LQR et couvrant l'enveloppe de vol de l'aéronef via un

  6. New technologies for space avionics

    Science.gov (United States)

    Aibel, David W.; Dingus, Peter; Lanciault, Mark; Hurdlebrink, Debra; Gurevich, Inna; Wenglar, Lydia

    1994-12-01

    This report reviews a 1994 effort that continued 1993 investigations into issues associated with the definition of requirements, with the practice concurrent engineering and rapid prototyping in the context of the development of a prototyping of a next-generation reaction jet driver controller. This report discusses lessons learned, the testing of the current prototype, the details of the current design, and the nature and performance of a mathematical model of the life cycle of a pilot operated valve solenoid.

  7. DISEÑO E IMPLEMENTACIÓN DEL SISTEMA DE COMUNICACIONES BASADO EN CAN PARA LA AVIÓNICA EN UN VEHÍCULO AÉREO AUTÓNOMO NO TRIPULADO DESIGN AND IMPLEMENTATION OF A COMMUNICATION SYSTEM BASED ON CAN FOR AVIONICS IN A ROBOT MINI-HELICOPTER

    Directory of Open Access Journals (Sweden)

    Jairo Miguel Vergara Díaz

    2007-07-01

    Full Text Available La necesidad de diseñar el sistema de comunicaciones para la aviónica de un mini helicóptero robot basada en la arquitectura distribuida CAN es la propuesta presentada. El sistema de comunicaciones involucra los aspectos de hardware y software necesarios para permitir el intercambio de datos sobre una red o bus de aviónica desde los sensores y/o hacia los actuadores con el computador central o computador de vuelo. La principal característica de la arquitectura es que permite escalabilidad en la agregación de nuevos dispositivos, garantizando los requerimientos temporales necesarios para la adquisición de datos. Se presentan resultados de intercambio de datos sobre la red de aviónica mostrando las frecuencias de operación alcanzadas.This paper presents the design of the internal communication system for avionics of a robot mini-helicopter based on the CAN distributed architecture. The communication system involves several hardware and software aspects related to data exchange on avionics bus from sensors and actuators with the flight computer. The main characteristic of the architecture is scalability in the addition of new devices, maintaining time requirements for data acquisition. Results of data exchange on the avionics network showing the reached operating update rates for each node are shown.

  8. A Framework of Simulation Testing Environment for Integrated Modular Avionics Software%综合模块化航电软件仿真测试环境研究

    Institute of Scientific and Technical Information of China (English)

    周庆; 刘斌; 余正伟; 冯时雨

    2012-01-01

    伴随着综合模块化航空电子(IMA)软件在新一代飞机上的应用,其高复杂性、高度综合的特点以及分层的健康监控和故障管理模式给软件测试提出了挑战.传统的仿真测试环境在应对IMA软件测试中难以满足RTCA DO-178B 中规定的对验证过程结果的验证的要求.本文在分析IMA软件特点的基础上,根据DO-178B的要求,综合国外的发展情况和国内的研究进展情况,研究综合模块化航电软件仿真测试环境需求,提出了基于软件故障注入的综合模块化航电软件灰盒仿真测试环境方案,并给出优势分析.该仿真测试环境方案以IMA软件为测试对象,应用软件故障注入技术和代码插装技术满足测试规范文件的要求.其具有通用灵活、适配性强、强实时性等特点,为中国新一代航电软件的系统验证和测试奠定了基础.%It is difficult for the traditional software testing environment to meet the requirements of integrated modular avionics (IMA) software testing and verification of the verification process results in RTCA-DO-178B. It is also difficult for the traditional software testing environment to achieve the goals of functional testing and validation of the IMA software, which includes testability design, health monitoring and redundancy management functions. This paper analyzes the characteristics of integrated modular avionics software, and describes the requirements of the testing environment aimed for IMA software testing. Then, it proposes a program of IMA software grey-box testing environment based on software fault injection. This program is more general, flexible and strong real-time than the traditional software testing environment.

  9. Le bruit des avions comme facteur de dépréciations immobilières, de polarisation sociale et d’inégalités environnementales. Le cas d’Orly.

    Directory of Open Access Journals (Sweden)

    Guillaume Faburel

    2007-04-01

    Full Text Available Objectif des stratégies de développement durable, la conciliation entre les grands équipements de transport et leurs territoires d’accueil suppose une meilleure compréhension de leurs effets environnementaux et territoriaux. Nous évaluons ici les effets du bruit des avions sur les valeurs immobilières et la mobilité résidentielle des ménages, en appliquant la méthode des prix hédoniques aux valeurs de transactions immobilières observées entre 1995 et 2003 dans huit communes proches de l’aéroport d’Orly. Le bruit des avions déprécie la valeur des logements, et le taux de décote croît depuis 1995 alors que les niveaux de bruit sont restés stables, révélant la sensibilité croissante des ménages à leur environnement. D’autre part, le renouvellement des populations ne s’opère pas à l’identique : les arrivants sont plus jeunes et plus modestes que les partants. Les inégalités environnementales émergent du croisement de ces résultats, des ménages plus modestes supportant des décotes plus importantes.Finding conciliations between large infrastructures of transport and their surrounding area emerges as an important goal of sustanaible development strategies and rests on a better knowledge of their environmental and territorial effects. We report here an Hedonic Price Method (HPM application to housing values and household mobility, for eight cities located near to Orly Airport and exposed to aircraft noise. Results show that aircraft noise causes property values depreciation, and that the Noise depreciation Index is growing since 1995, even with a noise exposure level remaining stable. Moreover, household mobility shows that newcomers are younger and of lower social level than leaving ones. Hence, crossing these results lets have a glimpse of increasing environmental inequities, for more modest households will have in the future to endure more important depreciations.

  10. Evolvement Process and Management Mode of Strategic Alliance of Avionic Manufacturing Industry in China%我国航空制造业战略联盟模式演变及其管理模式研究

    Institute of Scientific and Technical Information of China (English)

    欧立雄; 苗准; 安梦琪; 朱哲然

    2013-01-01

    以资源依赖等理论为基础,通过分析国内外航空制造业战略联盟模式类型与更替,提炼出我国航空制造企业战略联盟“代加工-契约式-持股式”演变过程模型,并介绍了不同阶段模式的内涵与代表形态。面向战略联盟管理目标,提出了基于项目管理的战略联盟管理框架,及以矩阵式组织结构为静态治理框架、以契约机制、协同管理机制与文化融合机制为核心的运行体系。%Based on resource dependency theory,the taxology of strategic alliance in China’s avionic manufacturing industry is presented, based on which the evolvement historical picture is drawn as"OEM-Contractual-Ownership"each phase of which is also defined and depic-ted.Furthermore,a corresponding management framework is presented based on project management,which comprises the static management framework(matrix organizational structure)and the dynamic running mechanism such as contractual mechanism,coordination management and cultural merging mechanism.

  11. Design of development platform for hosted applications in integrated module avionics system%面向综合模块化航电系统的驻留应用开发平台设计

    Institute of Scientific and Technical Information of China (English)

    王运盛; 雷航

    2012-01-01

    The common computing resources in the Integrated Modular Avionics (IMA) system provide the hosted applications with temporal and spatial partitioning platform. The platform for applications development should comply with the ARINC 653 specification which defines the application executive interfaces for partitioning operation system. By porting and developing the Board Support Package (BSP) and AFDX network driver, for the first time, an IMA platform solution for hosted application development was achieved based on the C2K, a Commercial Off-The-Shelf (COTS) single board computer. The functionality and performance of the COTS based platform are similar to the popular common computing resources in IMA of modern civil transportation aircraft, offering a development platform for hosted applications development and debug at a pretty lower costs.%综合模块化航电系统采用时间和空间分区技术隔离不同的应用程序,驻留在分区中应用程序的开发依赖于符合ARINC 653及相关接口和通信规范的开发平台.通过移植传统操作系统的板级支持包和开发驱动程序,使得商业单板计算机C2K支持符合ARINC 653规范的VxWorks 653分区操作系统并提供AFDX网络接口,首次实现了基于商业单板计算机C2K的驻留应用开发平台,其主要功能和性能与目前主流的大型客机综合模块化航电系统相当,可用来支持驻留应用的开发和调试,大幅度降低了成本.

  12. High-Safety Time Management Technology for Integrated Modular Avionic (IMA) System%综合模块化航电系统高安全性时间管理技术

    Institute of Scientific and Technical Information of China (English)

    杜晓鹏; 孙泓宏; 王立端

    2013-01-01

    综合模块化航电(IMA)系统中错误信息的传输漏洞会对飞机安全带来严重影响,为了提高IMA系统时间传输的完整性,使子系统能在确定的时间窗口内进行数据传输,提出了一种IMA系统高安全性时间管理技术;通过使用多个时间管理服务,建立每个子系统与时间管理服务的偏差表,确定其本地时间参考(LTR)和与之通信的每个远程子系统时间参考之间的关系;使驻留IMA的子系统具有高安全性时间同步机制,能够协调分离的驻留子系统共同安全地执行同一任务,满足IMA系统时间同步和安全性要求.%False information transmission flaw in Integrated Modular Avionics ( IMA) system would seriously impact the aircraft safety. To improve the integrity of IMA system time transmission, a high-safety time management technology for IMA system was put forward, by which all published data on IMA platform will be transferred to subscribers as requested at one designated time window. By using multi-time management service, deviation table between each subsystem and time management service was set up, to identify the relationship between local time reference ( LTR) and the time reference of each remote subsystem communicating with LTR. The time management technology provides subsystems hosted in IMA with high-safety time synchronization mechanism, coordinates the separated hosted subsystems to safely execute a task together, thus can satisfy the time synchronization and safety requirements of IMA system.

  13. 基于AADL的综合航电分区系统可调度性判定%Schedulability Determination of Integrated Modular Avionics Partitioned System Based on AADL

    Institute of Scientific and Technical Information of China (English)

    袁翔; 胡军; 马金晶; 刘雪

    2014-01-01

    综合模块化航电( IMA)系统中的分区系统提高了其可靠性和安全性,但在系统设计和实现过程中,应采用各种分析和验证方法确保系统的时间需求得到满足。为此,针对符合ARINC653规范的IMA系统,根据分区系统层级调度的特性,提出一种基于仿真的分区任务集可调度性判定方法。借助Cheddar工具及其自定义调度策略功能,使架构分析和设计语言( AADL)具有对分区系统进行建模的能力,并利用该工具对AADL模型进行仿真以判定系统的可调度性。实例分析结果表明,该方法能自动、准确、快速地进行可调度性判定,并以甘特图的方式绘制任务调度过程,得到直观、详细的结果。%Integrated Modular Avionics( IMA) partitioned system is put forward to improve the reliability and security of the system,but in the process of system design and implementation,analysis and validation should be used to ensure that the system time requirements are met. In allusion to IMA system which meets ARINC653 specification,according to the characteristics of hierarchy scheduling partitioned system,this paper proposes a schedulability determination method based on simulation method. With the aid of Cheddar tool and the function of custom scheduling strategy,Architecture Analysis and Design Language(AADL) has the ability of modeling partitioned system,then the tool operates on the generated AADL model to determine the system schedulable. Example analysis result shows that the tool has automatic, accurate and fast advantages to describe task scheduling process by Gantt chart and the result is accurate and detailed.

  14. Avionics Reliability, Its Techniques and Related Disciplines.

    Science.gov (United States)

    1979-10-01

    de la necessit6 d’effectuer de faqon aussi precise que possible le travail demandA et d’autre part de l’absence d’arri~re pens~e chez l’industriel...Peri, 92240 Malakoff, France CIERI, G. Mr Contraves Italiana, Spa. Via Tiburtina, 965-00156, Roma , Italy CIVIDINO, B.C. Mr LMT, 46, Quai Alphonse Le...d’Evere, B 1140, Brussels, Belgium NERI, A. Mr Contraves Italiana, Spa, Via Tiburtina, 965, 00156, Roma , Italy O’CONNOR, P.D.T. Mr British Aerospace

  15. Avionics for Scaled Remotely Operated Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The use of UAVs has increased exponentially since 1995, and this growth is expected to continue. Many of these applications require extensive Research and...

  16. Formal verification of an avionics microprocessor

    Science.gov (United States)

    Srivas, Mandayam, K.; Miller, Steven P.

    1995-01-01

    Formal specification combined with mechanical verification is a promising approach for achieving the extremely high levels of assurance required of safety-critical digital systems. However, many questions remain regarding their use in practice: Can these techniques scale up to industrial systems, where are they likely to be useful, and how should industry go about incorporating them into practice? This report discusses a project undertaken to answer some of these questions, the formal verification of the AAMPS microprocessor. This project consisted of formally specifying in the PVS language a rockwell proprietary microprocessor at both the instruction-set and register-transfer levels and using the PVS theorem prover to show that the microcode correctly implemented the instruction-level specification for a representative subset of instructions. Notable aspects of this project include the use of a formal specification language by practicing hardware and software engineers, the integration of traditional inspections with formal specifications, and the use of a mechanical theorem prover to verify a portion of a commercial, pipelined microprocessor that was not explicitly designed for formal verification.

  17. Avionics Box Cold Plate Damage Prevention

    Science.gov (United States)

    Stambolian, Damon B.; Larchar, Steven W.; Henderson, Gena; Tran, Donald; Barth, Tim

    2012-01-01

    Problem Introduction: 1. Prevent Cold Plate Damage in Space Shuttle. 1a. The number of cold plate problems had increased from an average of 16.5 per/year between 1990 through 2000, to an average of 39.6 per year between 2001through 2005. 1b. Each complete set of 80 cold plates cost approximately $29 million, an average of $362,500 per cold plate. 1c It takes four months to produce a single cold plate. 2. Prevent Cold Plate Damage in Future Space Vehicles.

  18. Integrated Strike Avionics Study. Volume 1

    Science.gov (United States)

    1980-10-01

    z C, ( LL LUU LL Z CH 1 i zo < NIf ~3 0A.199~ 11 2 1 .86 V_ _ _ _ _ _ _ __ _ _ _ _ __) LLI 0 z w fL w z ZW>Z) coɘ LUU LL.4 LL II II zn- U C) UU 0...C0 * C C4 I U. to s 0- - o. 4) r_) E C 0 Lu 4) ZS )S U. -0 S D Q oA 4 AU .U 1-: 0 = 0c -4- *C.- *0 ) Lu tC; co0 < O- *~-J 0 0 ~ 113 a. Circle...a * * . 0 .!c~’ 117 ~ MfJP41!M 0 00 uonM in esini CL. o Iwo1J~ :3 ~m~iE 0 0o 0S nJ 00 E.. 0 c- C4 - ’w u z 0 .202L n 0 w 0 0 0(Ua Zo mE L - (U 00 w 0

  19. Architecture Specification for PAVE PILLAR Avionics

    Science.gov (United States)

    1987-01-01

    Short Hearier IsequenceG of bus Sta~tesI shall bDinl as ghelinmid 1 r, tha fol 11i rig tabla -s: Typal il, mingle sieve $-"-Tab~ -I? Type 16...Statistic Descriptors ........... .................. ..26 XII TMU/TCU Functions ............. .................... ..37 XiiI TXC Functions...request network/terminal maintenance information. Unique identifiers shall be provided to . accommodate the functions described in Table XII . TABLE XII TMU

  20. Aging Engines, Avionics, Subsystems and Helicopters

    Science.gov (United States)

    2007-11-02

    House Via XX Settembre 123a28850 Torrejón de Ardoz - Madrid 65 Brown Street 00187 Roma Glasgow G2 8EX ETATS-UNIS LUXEMBOURGNASA Center for AeroSpace...str∨edisko R&T ICELAND INTA (RTO/AGARD Publications)VTÚL a PVO Praha Director of Aviation Carretera de Torrejón a Ajalvir, Pk.4Mladoboleslavská ul...Bakanliklar - Ankara Via XX Settembre 123aDK-2100 Copenhagen Ø UNITED KINGDOM00187 Roma FRANCE Defence Research Information LUXEMBOURGO.N.E.R.A. (ISP

  1. Avionics for Scaled Remotely Operated Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The use of UAS's in the military and the commercial field has grown tremendously over the last few years and is set to explode over next several. An...

  2. General Aviation Activity and Avionics Survey 1984

    Science.gov (United States)

    1985-10-01

    1-r- 0sn r-C) 1-n4 A rW IniC lol o oo i.VA Cd )’ a .3 -- - I, CdA xd j Cd ’Am. " ’ Ai I-W wU g t 8 weR at lz at w betl wg at i w~ a w~ at ix 8 OM I0at...S ’ TABLE D-1. SDR AIRCRAFT GROUP NAME - FAA MANUFACTURER/MODEL CODES (CONTINUED) SDR FAA SDR FAA SDR FAA PIPER 600 106001... PIPER PAlS 101828 PIPER PA31T 103128 PIPER 600 106010 PIPER PAl8 101832 PIPER PA32 103206 PIPER 600 106012 PIPER PAlS 101834 PIPER PA32 103207 PIPER 600

  3. Modular, Plug and Play, Distributed Avionics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The objective of this SBIR effort was to prove the viability of an Ethernet version of the MicroSat Systems, Inc. (MSI) modular, plug and play (PnP) spacecraft...

  4. Software Engineering and Its Application to Avionics

    Science.gov (United States)

    1988-01-01

    Cohabitation/fusion avec dos applications ou des traitements conventionnels (algorithmie/calculs/ gestion d’entros-sorties...) Pour ]a machine embarquable...riglo. - roprisentation souplo des objets, adaptie & 1 iwlantation ultfiruro des micanismos do gestion d’hypothlses. - compilation optimaic do... conflits . qul ant lieu en rfialiti apr13 cheque modification do 1 ensemble des objets, ca*st I dire pendant les phases 3 et 4. Dens Vitat; Initial, lensemle

  5. Avionics and ATC Technology for Mission Control

    Directory of Open Access Journals (Sweden)

    Elena BALMUS

    2015-09-01

    Full Text Available This paper presents a review of the old-fashioned communication and radio navigation techniques as a starting point for the development of new technologies for the Air Traffic Control based on 1940’s era radar. Current research tendencies focus on the reduction of delays and overload in a congested airspace. A key step in providing increased situational awareness for controllers and pilots is sharing operational information to improve access and flexibility. Communication between cockpit and controller through audio channels has become insufficient with the growing number of flights that take to skies every day and every year; therefore the need for alternative solutions to meet that demand has appeared. New technologies use messaging to deliver clearances, coordinates and commands determining the operators of aircraft to see the information, acknowledge, and act. Besides the new means of communication, precision navigation guidance based on GPS signals has been developed for exact alignment and descent of aircraft on approach to land on a runway.

  6. General Aviation Activity and Avionics Survey

    Science.gov (United States)

    1988-01-01

    Slope 1154 i44.5%) Microwave System No Par 2.3(.9%) VOR NA VIGA TION EQUIPMENT 100 -7nelVR _1:;:68 1(26.2%) 200 Channel VOR 200 Channel VOR .119 0(45 9...OTHER NA VIGA TION EQUIPMENT Radar Altimeter 19. 1(7.3%) Weather Radar 22.4 (8.6%) Thunderstorm Detection Equipment = 14.3(5.5%) No Navigation

  7. H-60 Mission Avionics Technology Insertion

    Science.gov (United States)

    2004-01-01

    single board computer . This is the same single board computer that is utilized in the Primary Mission Computer, so it would be subject to the same...Report Document No. 312-015-002 Page 23 4.2.13 Acoustic Processor The Acoustic Processor contains four single board computer modules in a 15 slot VME

  8. SWIFT-nanoLV Avionics Platform Project

    Data.gov (United States)

    National Aeronautics and Space Administration — With the increased demand for and utility of nano- and micro-satellites, the demand for responsive, low-cost access to space has also increased. To meet this demand,...

  9. FPGA for Power Control of MSL Avionics

    Science.gov (United States)

    Wang, Duo; Burke, Gary R.

    2011-01-01

    A PLGT FPGA (Field Programmable Gate Array) is included in the LCC (Load Control Card), GID (Guidance Interface & Drivers), TMC (Telemetry Multiplexer Card), and PFC (Pyro Firing Card) boards of the Mars Science Laboratory (MSL) spacecraft. (PLGT stands for PFC, LCC, GID, and TMC.) It provides the interface between the backside bus and the power drivers on these boards. The LCC drives power switches to switch power loads, and also relays. The GID drives the thrusters and latch valves, as well as having the star-tracker and Sun-sensor interface. The PFC drives pyros, and the TMC receives digital and analog telemetry. The FPGA is implemented both in Xilinx (Spartan 3- 400) and in Actel (RTSX72SU, ASX72S). The Xilinx Spartan 3 part is used for the breadboard, the Actel ASX part is used for the EM (Engineer Module), and the pin-compatible, radiation-hardened RTSX part is used for final EM and flight. The MSL spacecraft uses a FC (Flight Computer) to control power loads, relays, thrusters, latch valves, Sun-sensor, and star-tracker, and to read telemetry such as temperature. Commands are sent over a 1553 bus to the MREU (Multi-Mission System Architecture Platform Remote Engineering Unit). The MREU resends over a remote serial command bus c-bus to the LCC, GID TMC, and PFC. The MREU also sends out telemetry addresses via a remote serial telemetry address bus to the LCC, GID, TMC, and PFC, and the status is returned over the remote serial telemetry data bus.

  10. Corrosion Control Test Method for Avionic Components

    Science.gov (United States)

    1981-09-25

    Oelionstration and Corrosion Tests Documnentation Task 1 Task 2k3 3 Tent Methods 3 Test Methods 2 Test Methods FIgure 1program Plan 2 NADC 81174-60 04 L...per 10 cubic foot of uhamber velume every 24 hours. The solution is atomized by compressed air humidified by bubbling through 115*F distilled water

  11. Nonoperating Failure Rates for Avionics Study.

    Science.gov (United States)

    1980-04-01

    ENVIRONMENTAL MITDK-1B RA7324 LC.76.1 OPERATING NONOPERATING DUIAION DUTY CYCLE METHOD METHOD FAILURES SAILURES ANALYSIS IMO)I OP NERO NOP NOP AOP AAOP A...Reliability and Maintainability Sym- posium, Wash., DC, January 1975. 21. Balaban, H.S. , Guidelines for Application of Warranties to Air Force

  12. Engineering Effects of Advanced Composite Materials on Avionics.

    Science.gov (United States)

    1981-07-01

    Keywords: Antennas, Structures Article (1979) Prepared by H. L. Staubs , G. G. Chadwick, A. A. Woods Company: USAF/Lockheed (Presented at the National...Schulte, 67 Freeman, 58 Sidwell, 7 Furktow, 17 Siegel, 56 Gajda, 19, 61, 64 Skouby, 33, 66 Greenwell, 84, 85, 86, 88 Smithers, 63 Harder, 84, 87 Staubs ...potential of the building with respect to the earth may fluc- faults constitute personnel, fire, and explosion hazards which tuate widely. The

  13. The 727 approach energy management system avionics specification (preliminary)

    Science.gov (United States)

    Jackson, D. O.; Lambregts, A. A.

    1976-01-01

    Hardware and software requirements for an Approach Energy Management System (AEMS) consisting of an airborne digital computer and cockpit displays are presented. The displays provide the pilot with a visual indication of when to manually operate the gear, flaps, and throttles during a delayed flap approach so as to reduce approach time, fuel consumption, and community noise. The AEMS is an independent system that does not interact with other navigation or control systems, and is compatible with manually flown or autopilot coupled approaches. Operational use of the AEMS requires a DME ground station colocated with the flight path reference.

  14. General Aviation Activity and Avionics Survey. Calendar Year 1991

    Science.gov (United States)

    1991-01-01

    0B N NWH m • • DO 06 N (•) O »-I 7-47 & CM H D a u § M IH I U ( s KOI n\\ SE-i ooo > O Oi ■ poX >ofa a: otf ooo > OOu...M W C) <M *• t^ rH 00 t^ MVA o * o <M r- PI m m o\\ CM rH fO t-l <n in «n CO i-l «•-I i-» N H t~ r- m r- <o « 00 to O O 00 rH r- o (M CM00 ■-I m

  15. NextGen Avionics Roadmap Version 2.0

    Science.gov (United States)

    2011-09-30

    capabilities. Additional difficulties will arise as operators equip at different rates forcing the air traffic management system to control a mixed...extent. The FAA is working to develop an alternative position navigation and timing strategy to act as a back-up system (e.g. DME / DME /IRU...The use of RTA will also increase as new aircraft enter the fleet and the benefits drive higher levels of retrofit. ADS-B will provide additional

  16. 2013 aircrew, avionics, and operations survey, part 1.

    Science.gov (United States)

    Greene, Michael J

    2013-01-01

    Air medical transport services (AMTS) depend on the teamwork of aviation professionals, medical caregivers, communications specialists, maintenance staff, and administrative personnel to facilitate the safe medical transportation and care to critically ill and injured patients across the world. Consisting of respondents based in the United States, this 2013 survey revisits contemporary AMTS aircrew (pilot, aviator) experience, compensation, benefits, training, and safety in the industry compared to a survey conducted in 2000.

  17. Shuttle Communications and Tracking, Avionics, and Electromagnetic Compatibility

    Science.gov (United States)

    deSilva, K.; Hwu, Shian; Kindt, Kaylene; Kroll, Quin; Nuss, Ray; Romero, Denise; Schuler, Diana; Sham, Catherine; Scully, Robert

    2011-01-01

    By definition, electromagnetic compatibility (EMC) is the capability of components, sub-systems, and systems, to operate in their intended electromagnetic environment, within an established margin of safety, and at design levels of performance. Practice of the discipline itself incorporates knowledge of various aspects of applied physics, materials science, and engineering across the board, and includes control and mitigation of undesirable electromagnetic interaction between intentional and unintentional emitters and receivers of radio frequency energy, both within and external to the vehicle; identification and control of the hazards of non-ionizing electromagnetic radiation to personnel, ordnance, and fuels and propellants; and vehicle and system protection from the direct and indirect effects of lightning and various other forms of electrostatic discharge (ESD) threats, such as triboelectrification and plasma charging. EMC is extremely complex and far-reaching, affecting in some degree every aspect of the vehicle s design and operation. The most successful efforts incorporate EMC design features and techniques throughout design and fabrication of the vehicle s structure and components, as well as appropriate operational considerations with regard to electromagnetic threats in the operational environment, from the beginning of the design effort to the end of the life cycle of the manufactured product. This approach yields the highest design performance with the lowest cost and schedule impact.

  18. Alternative Suspension System for Space Shuttle Avionics Shelf

    Science.gov (United States)

    Biele, Frank H., III

    2010-01-01

    Engineers working in the Aerospace field under deadlines and strict budgets often miss the opportunity to design something that is considered new or innovative, favoring instead to use the tried-and-true design over those that may, in fact, be more efficient. This thesis examines an electronic equipment stowage shelf suspended from a frame in the cargo bay (mid fuselage) of the United States Space Transportation System (STS), the Space Shuttle, and 3 alternative designs. Four different designs are examined and evaluated. The first design is a conventional truss, representing the tried and true approach. The second is a cable dome type structure consisting of struts and pre-stressed wiring. The third and fourth are double layer tensegrity systems consisting of contiguous struts of the order k=1 and k=2 respectively.

  19. Assuring Quality and Reliability in Complex Avionics Systems hardware & Software

    Directory of Open Access Journals (Sweden)

    V. Haridas

    1997-01-01

    Full Text Available It is conventional wisdom in defence systems that electronic brains are where much of the present and future weapons system capability is developed. Electronic hardware advances, particularly in microprocessor, allow highly complex and sophisticated software to provide high degree of system autonomy and customisation to mission at hand. Since modern military systems are so much dependent on the proper functioning of electronics, the quality and reliability of electronic hardware and software have a profound impact on defensive capability and readiness. At the hardware level, due to the advances in microelectronics, functional capabilities of today's systems have increased. The advances in the hardware field have an impact on software also. Now a days, it is possible to incorporate more and more system functions through software, rather than going for a pure hardware solution. On the other hand complexities the systems are increasing, working energy levels of the systems are decreasing and the areas of reliability and quality assurance are becoming more and more wide. This paper covers major failure modes in microelectronic devices. The various techniques used to improve component and system reliability are described. The recent trends in expanding the scope of traditional quality assurance techniques are also discussed, considering both hardware and software.

  20. GPM Avionics Module Heat Pipes Design and Performance Test Results

    Science.gov (United States)

    Ottenstein, Laura; DeChristopher, Mike

    2012-01-01

    GPM is a satellite constellation to study precipitation formed from a partnership between NASA and the Japanese Aerospace Exploration Agency (JAXA). The GPM Core Observatory, being developed and tested at GSFC, serves as a reference standard to unify precipitation measurements from the GPM satellite constellation. The Core Observatory carries an advanced radar/radiometer system to measure precipitation from space. The scientific data gained from GPM will benefit both NASA and JAXA by advancing our understanding of Earth's water and energy cycle, improving forecasts of extreme weather events, and extending our current capabilities in using accurate and timely precipitation information to benefit society.

  1. Model-Based Verification and Validation of Spacecraft Avionics

    Science.gov (United States)

    Khan, Mohammed Omair

    2012-01-01

    Our simulation was able to mimic the results of 30 tests on the actual hardware. This shows that simulations have the potential to enable early design validation - well before actual hardware exists. Although simulations focused around data processing procedures at subsystem and device level, they can also be applied to system level analysis to simulate mission scenarios and consumable tracking (e.g. power, propellant, etc.). Simulation engine plug-in developments are continually improving the product, but handling time for time-sensitive operations (like those of the remote engineering unit and bus controller) can be cumbersome.

  2. COMPARISON OF CONVENTIONAL AND PROGRAMED INSTRUCTION IN TEACHING AVIONICS FUNDAMENTALS.

    Science.gov (United States)

    LONGO, ALEXANDER A.; MAYO, G. DOUGLAS

    THIS STUDY, PART OF A SERIES INVOLVING A VARIETY OF COURSE CONTENT AND TRAINING CONDITIONS, COMPARED PROGRAMED INSTRUCTION WITH CONVENTIONAL INSTRUCTION TO GAIN INFORMATION ABOUT THE GENERAL UTILITY OF PROGRAMED METHODS. THE PERFORMANCE OF 200 NAVY TRAINEES TAKING 26 HOURS OF CONVENTIONAL INSTRUCTION IN ELECTRICAL CALCULATIONS, DIRECT CURRENT…

  3. System Design Toolkit for Integrated Modular Avionics for Space

    Science.gov (United States)

    Hann, Mark; Balbastre Betoret, Patricia; Simo Ten, Jose Enrique; De Ferluc, Regis; Ramachandran, Jinesh

    2015-09-01

    The IMA-SP development process identified tools were needed to perform the activities of: i) Partitioning and Resource Allocation and ii) System Feasibility Assessment. This paper describes the definition, design, implementation and test of the tool support required to perform the IMA-SP development process activities. This includes the definition of a data model, with associated files and file formats, describing the complete setup of a partitioned system and allowing system feasibility assessment; the development of a prototype of the tool set, that is called the IMA-SP System Design Toolkit (SDT) and the demonstration of the toolkit on a case study.

  4. Intelligent, Reusable Software for Plug and Play Space Avionics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Space Micro proposes to build upon our existing space processing and hardening technologies and products e.g (Proton 200K), to research and develop reusable software...

  5. General Aviation Activity and Avionics. Calendar Year 1990

    Science.gov (United States)

    1990-01-01

    200 220 BASIC NA VIGA TION EQUIPMENT 100 Channel VOR (Portable) 4.8( .8%) 100 Channel VOR (Fixed) T73.5 (27.6%) 200 Channel VOR (Portable) 16.9(6.3...0(1.1%) Other LRNA V 1.9 (0. 7%) OTHER NA VIGA TION EQUIPMENT Radar Altimeter 18.4 (6.9%) Weather Radar 22.3 (8.4%) Thunderstorm Detection Equipment

  6. General Aviation Activity and Avionics Survey. Calendar Year 1989

    Science.gov (United States)

    1989-01-01

    Area Navigation Equipment (RNA V) 32.2(12.6%) LONG RANGE NA VIGA TION EQUIPMENT (LRNA V) Loran.C ...I.I..I.... ..I . 80. 1(31.2%) Visual Flight Rules...1(1.2%) Other LRNA V 3.0(1.2%) OTHER NA VIGA TION EQUIPMENT RadarAltimeter . 18.2(71%) Weather Radar 2 21.4 (8.3%) Thunderstorm Detection Equipment

  7. L’avion, le cerf-volant et le deuil

    Directory of Open Access Journals (Sweden)

    Jean Marie Théodat

    2009-07-01

    Full Text Available Le hasard de l’actualité nous fait publier ce neuvième numéro avec un Sur le Vif en résonance décalée par rapport à l’émoi planétaire suscité par la disparition brutale, le jeudi 25 juin, de Michael Jackson. Certes, la pop music n’est pas notre cœur de métier, mais une fois faite la part de l’ombre des coulisses d’une vie que l’on devine pleine de douleurs enfouies, et celle des paillettes qui illuminent la scène, demeure l’incontestable talent dont la ferveur planétaire justifie, dans ces co...

  8. Electromagnetic Effects of (Carbon) Composite Materials Upon Avionics Systems

    Science.gov (United States)

    1980-10-01

    structure, lee champs 6lectromagnfitiques externes iinternee, lea surten- sions sur divers 6quipementa et circuits de bord ; diff~rents capteurs permettent... capteurs 6itaient plac6s dana le bard d’attaquo da chaque aile ; deux autres sur le fuselage , A l’intgrieur de la saute , l6g~rement en avant du plan des...6vidence, d’une part la n~cessitfi de gfin6raliser lltlsto des fibres optiques pour tranamottre lea signaux deamesure at, d’autre part, la n6cesaitg dtam

  9. An Avionics Touch Screen based Control Display Concept

    NARCIS (Netherlands)

    Mertens, M.; Damveld, H.J.; Borst, C.

    2012-01-01

    In many cockpits, control display units (CDUs) are vital input and information devices. In order to improve the usability of these devices, Barco, in cooperation with TU-Delft, created a touch screen control unit (TSCU), consisting of a high-quality multi-touch screen. The unit fits in the standard

  10. B-1B Avionics Systems AFSC 457X3

    Science.gov (United States)

    1992-01-01

    PERFORM NUCLEAR HARDNESS MAINTENANCE OR INSPECTIONS 80 H317 SERVICE VIDEO RECORDER MAGAZINES 80 E176 PERFORM CORE AUTOMATED MAINTENANCE SYSTEMS (CAMS...AND REPAIR WORK 65 D94 CONDUi OJT 65 H324 TROUBLESHOOT ORSs 63 H318 TROUBLESHOOT ACUCs 63 E176 PERFORM CORE AUTOMATED MAINTENANCE SYSTEMS (CAMS...DATA 70 E124 ANNOTATE, INITIATE, OR COMPLETE AFTO FORMS 349 (MAINTENANCE DATA COLLECTION RECORD) 70 E176 PERFORM CORE AUTOMATED MAINTENANCE SYSTEMS

  11. Advanced Avionics and the Military Aircraft Man/Machine Interface.

    Science.gov (United States)

    1982-07-01

    capter de 1’information A tout prix a 6galement 6t observ6 par chacun dans le m~tro oQ Von ne paut s’emp~cher de lire tout ce qui tombe sous l’oeil, las...poursuivre sur 6cran cathodique une cible dont le rnouvement est plus ou momns al~atoire et rapide, les fonctions de transfert entre les commandes et le...conduit A leur faire perdre une qualification ch~rement acquise au prix d’un long entralnement. Cet 6tat d’esprit n’est pas toujours conscient. mais il se

  12. General Aviation: Hours Flown and Avionics Purchase Decisions.

    Science.gov (United States)

    1978-05-01

    cost and income on hours flown for the various hours flown categories will be considered in Section 2-4 of this chapter. 19 For the benefit of the...omitted because of irrelevance. 59 - 7it Results for the age related factors are as expected-- cider aircraft fly fewer and more recent vintage aircraft...based on the incremental benefits acquired by the "add-one," or simply a function of a larger number of owners having only one or the other type of

  13. Integrated Power, Avionics, and Software (IPAS) Flexible Systems Integration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — iPAS will develop several important technologies required to support system design and integration as well as space technology maturation. These services include:A...

  14. Occupational Survey Report AFSC 2A0X1A Avionics Test Station and Components (Avionics Systems, F-15)

    Science.gov (United States)

    2007-11-02

    on EARTS • Operationally check radar low-voltage power supplies (LVPSs) (610s) on EARTS • Service antenna mounting fixtures ( AMFs ) on EARTS...Tasks Job Enl Emp Dif ATI A0025 Fabricate or rebuild cables 53 65 5.33 5.18 18 A0030 Interpret block diagrams or schematics 47 60 7.08 5.29 18 A0033

  15. The Design, Development and Testing of Complex Avionics Systems: Conference Proceedings Held at the Avionics Panel Symposium in Las Vegas, Nevada on 27 April-1 May 1987

    Science.gov (United States)

    1987-12-01

    chaz Ia maitre d’oeuvre systeme quo chat lIequipomentler. Cos outils font paitle des moyens ginirauo de I entreprise et couvrent I ensemble des...test6 s’excute. A ce titre, WDAS eat propos6 cosine outii de test our l’atelier ENTREPRISE , atelier de g~nie logt- ciel portable multiiangage d~veloppk...EFFORTS I SKILLED POOLS OF LABOR I AVAILABLE FINANCING I PRESENCE OF CORPORATE HEADQUARTERS I TRANSPORTATION I CLIMATE AND CULTURAL AMENITIES 1* OTHER

  16. Evaluation de differentes strategies de demantelement de la carcasse d'un avion

    Science.gov (United States)

    Sainte-Beuve, Damien

    At the time when sustainable development of our environment and our society become more and more considered, the issue of the end of life of aircraft arises. With the tightening of regulations and policies to reduce operating costs, aircraft are increasingly removed from service before the end of their operational life. However, the regulations do not only affect the operational life of the aircraft. In the future, there are great chances that the aircraft end of life will be also regulated as the car end of life. Nowadays some deserts serve as a tomb for airplanes skeletons, but what will happen in a few years? Recycling the skeleton is not an operation with very high added value, such as reselling used parts, however intelligent sorting and facing the market can increase the gain. At the level of the aircraft life cycle, recycling its materials reduces its overall impact, and also helps to reduce pollution and land use, even if the main impacts generated by planes are created during the use phase. Similarly, if the recyclability of the aircraft is studied at the source, that is to say in its design, this will help to reduce the use of non-recyclable materials and dangerous compound. The greatest difficulty for recycling aircraft skeletons is that different materials are mixed and attached to each other. Through a thermodynamic study we showed what concentrations of alloying elements in a molten bath could be reduced. By using the Gibbs free energy, we evaluated some of the reactions taking place in a molten bath of aluminum during the injection of oxygen, boron, and chlorine. We focused on the reactions forming dual elements compounds, such as lithium oxide or magnesium chloride. We have shown that the six elements able to react when these reactions occurs are the lithium, the magnesium, the nickel, the titanium, the vanadium and the zirconium. It is necessary to remember that the impurities for alloys used in the aerospace industry are lower and especially those of iron and silicon. The major problem of recycling of aluminum alloys is that some attachments are made from steels, and are not separated from aluminum. Iron binds too easily with aluminum and removing it is expensive and complicated. The separation of these disturbing parts can be performed before or after shredding parts. Present sorting pathways already permit at a certain scale, to make this type of sorting. Adding some type of sorting, such as the LIBS or the use of dry ice blasting can help to increase the purity of the alloys obtained. On the other hand, the number of different aircraft being relatively small, it is possible to develop specific methods to recycle specific aircraft and this according to the technologies available at the end of life of the aircraft. In this context we have studied the wing of a Canadair Regional Jet 200. After characterizing more than 80% by weight of the wing, we looked at determining areas to maximize the alloys recycled in a close loop. We developed a method to create homogenous areas with the data we collected. We have shown that the removal of certain parts, sometimes massive such as landing gear support can reduce the final impurity. In addition, the more massive they are, the more their withdrawal is interesting because while improving the quality of the whole mix, the parts removed are recoverable their self. Unfortunately, for the final work to provide a real gain it is necessary that the data is of high quality, and numerous. This rule is even truer if we apply an algorithm to create homogeneous areas. This algorithm takes into account the market demands, to create areas satisfying this demand. With three-dimensional data, the algorithm is able to take into account the actual average concentration of elements present, and all the parts left during the dismantling of the plane. Due to the complexity of assemblies, neither the post-milling nor the pre-shredding treatment is perfect. This is why it is interesting and productive to combine them. Sorting pre-shredding can save and facilitate the post-shredding.

  17. Etude de la stabilite d'un avion BWB (Blended Wing Body) de 200 passagers

    Science.gov (United States)

    Legros, Clement

    The Blended Wing Body (BWB) is a type of innovative aircraft, based on the flying wing concept. This new type of airplane shows several advantages compared to the conventional airplanes : economy of fuel, reduction of the weight of the structure, reduction of the noise and less impact on the environment, increased payload capacity. However, this kind of aircraft has a lack of stability due to the absence of vertical tail. Several studies of stability were already realized on reduced size models of BWB, but there is no study on a 200 passengers BWB. That's why, the main objective of this present study is to integrate the engines and theirs pylons into the existing conceptual design of the BWB to analyze of their impact on its static and dynamic stability over the flight envelope. The conception of the BWB was realized with the platform of design CEASIOM. The airplane, the engines and theirs pylons were obtained in the geometrical module AcBuilder of CEASIOM. The various aerodynamic coefficients are calculated thanks to Tornado program. These coefficients allow realizing the calculations of stability, in particular with the longitudinal and lateral matrices of stability. Afterward, the BWB flight envelope is created based on aeronautical data of a similar airplane, the Airbus A320. From this flight envelope, we get back several thousand possible points of flight. The last step is to check the static and dynamic stability, using the longitudinal and lateral matrices of stability and the Flying Qualities Requirements, for every point of flight. To validate our study of stability, the already existing studies of stability of the Boeing 747 will be used and compared with our model.

  18. Methodology Investigation. A Comparison of Reliability Tests for Avionics Equipment Onboard U.S. Army Helicopters

    Science.gov (United States)

    1975-04-01

    electric motor driven cam mechanism. Operation of the motor was controlled by a timer. The heating and cooling auto- clave is not shown in the photograph...the laboratory methods is least expensive is debatable . TABLE 4. 0-11 ESTIMATED RELATIVE COST AND TIME REQUIREMENTS Type____Test I Relative Calendar

  19. Digital Systems Validation Handbook. Volume 2. Chapter 18. Avionic Data Bus Integration Technology

    Science.gov (United States)

    1993-11-01

    U.S. Department of Transportation PFe 1rs Aviation Administration DOT/FAA/CT-88/10 HANDBOOK- VOLUME H DIGITAL SYSTEMS VALIDATION - CHAPTER 18 tw...18-29 improve identification, control, and auditing of software. SCM and SQA methods in RTCA/DO-178A are drawn directly from proven methods of hardware...procedures, and practices; reviews and audits ; configuration management; medium control; testing; supplier control; and appropriate records. A brief

  20. Ultra-Low Power Extreme Environment Capable Avionics System-on-a-Chip Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Develop ultra-low-power, wide-temperature (-150° C to +250 ° C), digital System-on-a-Chip (SOC) ASIC technology in a high resolution, inherently rad-hard IBM...

  1. Validation Methods Research for Fault-Tolerant Avionics and Control Systems: Working Group Meeting, 2

    Science.gov (United States)

    Gault, J. W. (Editor); Trivedi, K. S. (Editor); Clary, J. B. (Editor)

    1980-01-01

    The validation process comprises the activities required to insure the agreement of system realization with system specification. A preliminary validation methodology for fault tolerant systems documented. A general framework for a validation methodology is presented along with a set of specific tasks intended for the validation of two specimen system, SIFT and FTMP. Two major areas of research are identified. First, are those activities required to support the ongoing development of the validation process itself, and second, are those activities required to support the design, development, and understanding of fault tolerant systems.

  2. Validation of Digital Systems in Avionics and Flight Control Applications Handbook. Volume 1.

    Science.gov (United States)

    1983-07-01

    BASE SIMULATOR IRON BIRD CARC 0 SERVO AND SURFACE 3-AXIS TABLE 0 LOADER CONTROL UNIT I )j/,,a DEVELOPMENT :.T ES T PANELS FIGURE 8-14. IRON BIRD...development and fabrica - tion of the system." (Reference 1) 9.2.1.1 Component Tests. Component testing varies greatly depending upon several factors

  3. Software-Defined Avionics and Mission Systems in Future Vertical Lift Aircraft

    Science.gov (United States)

    2015-03-01

    routines, allowing time and space (memory) partitioning, health monitoring (error detection and reporting), and communications via “ports.” (IEEE, 2008...the pilot, reducing mental workload in challenging and stressful situations. Since an IMA2G FVL rotorcraft would have all the underlying...his yoga mat. A moment later, the port hangar door began to open, and the clamor of busy sailors spilled out onto the flight deck. “Gear up,” he

  4. The development of a range of small mechanical cryocoolers for space and avionic applications

    Science.gov (United States)

    Hocking, Barry

    1990-10-01

    The design features of a mechanical cryocooler, including a compressor, displacer, connecting pipe, and electronic controller are described. The complete system is filled with helium gas to a pressure of 10 bar. Long life, low exported vibration, and good refrigeration within the defined temperature range are emphasized as the main requirements. A number of improvements with regard to the reliability required for long-life space coolers are outlined, and emphasis is placed on the improved sealing for the helium gas and the outgassing properties of all components. Scaling up of the cryocooler design for increased refrigeration is reviewed as well as a space-system interface. Testing of space-rated cryocooler systems producing nominal 0.5 W and 1 W cooling at 65 K from a single system is discussed.

  5. Modeling and Simulation of Avionics Systems and Command, Control and Communications Systems

    Science.gov (United States)

    1980-01-01

    cabine et de liquipage. importance de la vision exterleure jour et nuit pour les deux membreE de6quipage et possiblIit6 de resti- tution pc~ur chacun d’eux... mill semra ocanbindo Aux autrom arroure &fin quo Is caloul do I& distance D... (liquatioan W,) wait porturbd au maximum. (o.Le spectro du bruit...imports d lissocier 1. can do 1a vision is jour do coiui de i& vision do nuit , "* L Comment: What revolution do you envisage your visual system? ’ ithor’s

  6. Validation of the Operating and Support Cost Model for Avionics Automatic Test Equipment (OSCATE).

    Science.gov (United States)

    1980-06-01

    A’JI=AVI* RINP 2100 TRIJHAY(1,15)=XD 2110 TRUNAT(l,16)uhV 2120 60 TO 41 2130 42 NUIMAYT=NUNAVT.1 2140 IF(NUMAYT .LE. MAXAVT) 00 TO 44 2150 PRINT 43 2160...TARI3AVAL) 0O TO 65 2670 NUNPTR=NUNPTR.1 2680 RINP =AVTAl(NUNPR,2) 2690 IFLUPT=AUTAI(NUMPTR,3) 2700 TRUNAIC IFLUPT,15)=AVTAB(NUNPTR,4) 2710 TRUNAT(IFLUPT,16...AVTAD(NUNPTR,5) 2720 TRUNAT(IFLUPT,17)=TRUNAT(IFLUPT,17)41. 2730 TRUNAT( IFLUPT, )=TRUNAflIFLUPT ,1)+UCTAI(IFLUPT)Sh 2740 AVImAVI* RINP 2750 SOTO 60

  7. Optimisation multidisciplinaire de pales d'hélice d'avion

    OpenAIRE

    Marinus, Benoît

    2011-01-01

    Open rotors are known to have significant advantages in terms of propulsive efficiency. These advantages translate directly in reduced fuel burn so that they nowadays benefit from a surge of interest. At the same time, recent advances in numerical simulations make the application of multidisciplinary optimization for the demanding design of transonic propeller blades, an affordable option. Therefore, an optimization method in which the performance objectives of aerodynamics, aeroacoustics and...

  8. Avionic Inertial and Radar Navigation Systems Career Ladder AFSC 328X4.

    Science.gov (United States)

    1984-06-01

    OR LABEL EQUIPMENT 80 F173 INSPECT EGRESS SYSTEM SAFETY PIN INSTALLATION 80 N464 REMOVE OR REPLACE GENERAL PURPOSE OR NAVIGATIONAL COMPUTERS 80 G191...ISOLATE MALFUNCTIONS TO INERTIAL PLATFORMS 60 F173 INSPECT EGRESS SYSTEM SAFETY PIN INSTALLATION 60 J294 ISOLATE MALFUNCTIONS TO INERTIAL COMPUTERS...COMPUTERS 72 N457 OPERATIONALLY CHECK GENERAL PURPOSE OR NAVIGATIONAL COMPUTER SYSTEMS 71 F173 INSPECT EGRESS SYSTEM SAFETY PIN INSTALLATION 71 4

  9. 3D Navigation and Integrated Hazard Display in Advanced Avionics: Workload, Performance, and Situation Awareness

    Science.gov (United States)

    Wickens, Christopher D.; Alexander, Amy L.

    2004-01-01

    We examined the ability for pilots to estimate traffic location in an Integrated Hazard Display, and how such estimations should be measured. Twelve pilots viewed static images of traffic scenarios and then estimated the outside world locations of queried traffic represented in one of three display types (2D coplanar, 3D exocentric, and split-screen) and in one of four conditions (display present/blank crossed with outside world present/blank). Overall, the 2D coplanar display best supported both vertical (compared to 3D) and lateral (compared to split-screen) traffic position estimation performance. Costs of the 3D display were associated with perceptual ambiguity. Costs of the split screen display were inferred to result from inappropriate attention allocation. Furthermore, although pilots were faster in estimating traffic locations when relying on memory, accuracy was greatest when the display was available.

  10. SIFT - Multiprocessor architecture for Software Implemented Fault Tolerance flight control and avionics computers

    Science.gov (United States)

    Forman, P.; Moses, K.

    1979-01-01

    A brief description of a SIFT (Software Implemented Fault Tolerance) Flight Control Computer with emphasis on implementation is presented. A multiprocessor system that relies on software-implemented fault detection and reconfiguration algorithms is described. A high level reliability and fault tolerance is achieved by the replication of computing tasks among processing units.

  11. Possible effects on avionics induced by terrestrial gamma-ray flashes

    Directory of Open Access Journals (Sweden)

    M. Tavani

    2013-04-01

    Full Text Available Terrestrial gamma-ray flashes (TGFs are impulsive (intrinsically sub-millisecond events associated with lightning in powerful thunderstorms. TGFs turn out to be very powerful natural accelerators known to accelerate particles and generate radiation up to hundreds of MeV energies. The number ratio of TGFs over normal lightning has been measured in tropical regions to be near 10−4. We address in this Article the issue of the possible susceptibility of typical aircraft electronics exposed to TGF particle, gamma ray and neutron irradiation. We consider possible scenarios regarding the intensity, the duration, and geometry of TGFs influencing nearby aircraft, and study their effects on electronic equipment. We calculate, for different assumptions, the total dose and the dose-rate, and estimate single-event-effects. We find that in addition to the electromagnetic component (electrons/positrons, gamma rays also secondary neutrons produced by gamma-ray photo production in the aircraft structure substantially contribute to single-event effects in critical semiconductors components. Depending on the physical characteristics and geometry, TGFs may deliver a large flux of neutrons within a few milliseconds in an aircraft. This flux is calculated to be orders of magnitude larger than the natural cosmic-ray background, and may constitute a serious hazard to aircraft electronic equipment. We present a series of numerical simulations supporting our conclusions. Our results suggest the necessity of dedicated measurement campaigns addressing the radiative and particle environment of aircraft near or within thunderstorms.

  12. Advanced Spacesuit Informatics Software Design for Power, Avionics and Software Version 2.0

    Science.gov (United States)

    Wright, Theodore W.

    2016-01-01

    A description of the software design for the 2016 edition of the Informatics computer assembly of the NASAs Advanced Extravehicular Mobility Unit (AEMU), also called the Advanced Spacesuit. The Informatics system is an optional part of the spacesuit assembly. It adds a graphical interface for displaying suit status, timelines, procedures, and warning information. It also provides an interface to the suit mounted camera for recording still images, video, and audio field notes.

  13. Cognitive avionics and watching spaceflight crews think: generation-after-next research tools in functional neuroimaging.

    Science.gov (United States)

    Genik, Richard J; Green, Christopher C; Graydon, Francis X; Armstrong, Robert E

    2005-06-01

    Confinement and isolation have always confounded the extraordinary endeavor of human spaceflight. Psychosocial health is at the forefront in considering risk factors that imperil missions of 1- to 2-yr duration. Current crewmember selection metrics restricted to behavioral observation by definition observe rather than prevent performance degradation and are thus inadequate when preflight training cannot simulate an entire journey. Nascent techniques to monitor functional and task-related cortical neural activity show promise and can be extended to include whole-brain monitoring. Watching spaceflight crews think can reveal the efficiency of training procedures. Moreover, observing subcortical emotion centers may provide early detection of developing neuropsychiatric disorders. The non-invasive functional neuroimaging modalities electroencephalography (EEG), magnetoencephalography (MEG), magnetic resonance imaging (MRI), and near-infrared spectroscopy (NIRS), and highlights of how they may be engineered for spacecraft are detailed. Preflight and in-flight applications to crewmember behavioral health from current generation, next generation, and generation-after-next neuroscience research studies are also described. The emphasis is on preventing the onset of neuropsychiatric dysfunctions, thus reducing the risk of mission failure due to human error.

  14. Avionics and Power Management for Low-Cost High-Altitude Balloon Science Platforms

    Science.gov (United States)

    Chin, Jeffrey; Roberts, Anthony; McNatt, Jeremiah

    2016-01-01

    High-altitude balloons (HABs) have become popular as educational and scientific platforms for planetary research. This document outlines key components for missions where low cost and rapid development are desired. As an alternative to ground-based vacuum and thermal testing, these systems can be flight tested at comparable costs. Communication, solar, space, and atmospheric sensing experiments often require environments where ground level testing can be challenging or impossible in certain cases. When performing HAB research the ability to monitor the status of the platform and gather data is key for both scientific and recoverability aspects of the mission. A few turnkey platform solutions are outlined that leverage rapidly evolving open-source engineering ecosystems. Rather than building custom components from scratch, these recommendations attempt to maximize simplicity and cost of HAB platforms to make launches more accessible to everyone.

  15. A survey on electromagnetic interferences on aircraft avionics systems and a GSM on board system overview

    Science.gov (United States)

    Vinto, Natale; Tropea, Mauro; Fazio, Peppino; Voznak, Miroslav

    2014-05-01

    Recent years have been characterized by an increase in the air traffic. More attention over micro-economic and macroeconomic indexes would be strategic to gather and enhance the safety of a flight and customer needing, for communicating by wireless handhelds on-board aircrafts. Thus, European Telecommunications Standards Institute (ETSI) proposed a GSM On Board (GSMOBA) system as a possible solution, allowing mobile terminals to communicate through GSM system on aircraft, avoiding electromagnetic interferences with radio components aboard. The main issues are directly related with interferences that could spring-out when mobile terminals attempt to connect to ground BTS, from the airplane. This kind of system is able to resolve the problem in terms of conformance of Effective Isotropic Radiated Power (EIRP) limits, defined outside the aircraft, by using an On board BTS (OBTS) and modeling the relevant key RF parameters on the air. The main purpose of this work is to illustrate the state-of-the-art of literature and previous studies about the problem, giving also a good detail of technical and normative references.

  16. Digital Avionics Information System (DAIS): Training Requirements Analysis Model Users Guide. Final Report.

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    This user's guide describes the functions, logical operations and subroutines, input data requirements, and available outputs of the Training Requirements Analysis Model (TRAMOD), a computerized analytical life cycle cost modeling system for use in the early stages of system design. Operable in a stand-alone mode, TRAMOD can be used for the…

  17. Design conceptuel d'un avion blended wing body de 200 passagers

    Science.gov (United States)

    Ammar, Sami

    The Blended Wing Body is built based on the flying wing concept and performance improvements compared to conventional aircraft. Contrariwise, most studies have focused on large aircraft and it is not sure whether the gains are the same for smaller aircraft. The main of objective is to perform the conceptual design of a BWB of 200 passengers and compare the performance obtained with a conventional aircraft equivalent in terms of payload and range. The design of the Blended Wing Body was carried out under the CEASIOM environment. This platform design suitable for conventional aircraft design has been modified and additional tools have been integrated in order to achieve the aerodynamic analysis, performance and stability of the aircraft fuselage built. A plane model is obtained in the geometric module AcBuilder CEASIOM from the design variables of a wing. Estimates of mass are made from semi- empirical formulas adapted to the geometry of the BWB and calculations centering and inertia are possible through BWB model developed in CATIA. Low fidelity methods, such as TORNADO and semi- empirical formulas are used to analyze the aerodynamic performance and stability of the aircraft. The aerodynamic results are validated using a high-fidelity analysis using FLUENT CFD software. An optimization process is implemented in order to obtain improved while maintaining a feasible design performance. It is an optimization of the plan form of the aircraft fuselage integrated with a number of passengers and equivalent to that of a A320.Les performance wing aircraft merged optimized maximum range are compared to A320 also optimized. Significant gains were observed. An analysis of the dynamics of longitudinal and lateral flight is carried out on the aircraft optimized BWB finesse and mass. This study identified the stable and unstable modes of the aircraft. Thus, this analysis has highlighted the stability problems associated with the oscillation of incidence and the Dutch roll for the absence of stabilizers.

  18. Etude des defauts apparaissant dans les amenagements interieurs des avions d'affaires

    Science.gov (United States)

    Charette, Emilie

    The evolution of the aeronautic industry led to the development of new materials for these high performance applications. Among other examples, composite sandwich structures are increasingly used for interior body panels of business airplanes. These structures are assembled and fixed to the fuselage using metallic inserts bonded inside the sandwich panels with an epoxy resin adhesive. A thin film of wood veneer covers the visible side of interior furniture in order to bring sophistication and esthetic to the interior design. However, due to multiple factors, surface defects frequently appear on the veneered side of the panel where inserts are located. Moreover the defects tend to appear months after the airplane delivery causing costly reparations. The sources of defects can be mechanical ( deformation due to an excessive tightening), chemical (shrinkage of the epoxy adhesive) or the result of hygrothermal exposition. It is therefore important to understand the source of such surface defects and ultimately prevent or control their appearance. The present thesis deals with defects from chemical and hygrothermal sources appearing on the composite panels used on the interior body of business jets after aging. The main objective was to identify and quantify phenomena causing the defects on the interior panels of business planes. This research project is the first part of a project sponsored by CRIAQ and NSERC. The interaction of several materials can lead to various phenomena causing the apparition of surface defects. The project was thus divided into three parts in order to study an increasingly complex problem. the first study deals with the characterization of the different constitutive materials taken separately. This first part focused on thermal, rheological and mechanical aspects of epoxy adhesives. It was shown that the two adhesives used have different mechanical properties and cure kinetic reactions. In addition, the mechanical properties of sandwich composites panels were studied. The second study focused on the analysis of hygrothermal influence on the adhesive and the composite sandwich panels taken separately. Humidity and temperature can have an important effect on the constitutive materials, it is therefore important to know their influence. Finally, the third part deals with the influence of hygrothermal aging on a structure combining all the different materials. Sample panels including fixing zones (insert and resin) were made at the industrial partner's facility according to the industrial procedure. Subsequently, the samples have undergone an accelerated aging. By using deflectometry system, changes in local curvatures with respect to the aging conditions were observed. A correlation between the material characterization results, the aging effects and the surface defect gravity was performed to evaluate the sources and the occurrence of defects. Recommendations have also been made to ensure the project continuity. This project, carried out in an industrial context with the collaboration of Centre de Recherche Industrielle du Quebec ( CRIQ), 3M Canada and the Chaire de recherche sur les composites hautes performances (CCHP) of the department of mechanical engineering of Ecole Polytechnique de Montreal, highlights the importance of the choice of methods and materials in the manufacturing of composite structures.

  19. Space shuttle engineering and operations support. Orbiter to spacelab electrical power interface. Avionics system engineering

    Science.gov (United States)

    Emmons, T. E.

    1976-01-01

    The results are presented of an investigation of the factors which affect the determination of Spacelab (S/L) minimum interface main dc voltage and available power from the orbiter. The dedicated fuel cell mode of powering the S/L is examined along with the minimum S/L interface voltage and available power using the predicted fuel cell power plant performance curves. The values obtained are slightly lower than current estimates and represent a more marginal operating condition than previously estimated.

  20. 78 FR 42898 - Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

    Science.gov (United States)

    2013-07-18

    ... states: Large aeroplane incidents and accidents have occurred because of fuel tank low level situations... proposed AD was prompted by reports of airplane incidents and accidents that have occurred because of low-level fuel tank situations and fuel starvation that resulted in engine flameouts. This proposed AD...

  1. 78 FR 65183 - Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

    Science.gov (United States)

    2013-10-31

    ... incidents and accidents that have occurred because of low-level fuel tank situations and fuel starvation.... This AD was prompted by reports of airplane incidents and accidents that have occurred because of low-level fuel tank situations and fuel starvation that resulted in engine flameouts. This AD...

  2. Human Consequences of Agile Aircraft (Facteurs humains lies au pilotage des avions de combat tres manoeuvrants)

    Science.gov (United States)

    2001-05-01

    Ecologia . - 1995. No 5. - P. 2-7. 20. Palets B.L., Tikhonov M.A., Popov A.A., Arkhangelsky D.Yu., Palets L.D., Bondarenko R.A. Theoretical Analysis of... Ecologia . - 1995. - No 3. - P. 30-34. 46. Chernyakov I.N., Shishov A.A. Maintenance of Vitality and Performance in Pilots by Means of Oxygen Complex in...Emergency Depressurization of the Cabin // Meditsina Truda i Promyshlennaya Ecologia . - 1995. - No 3. - P. 30- 34. 47. Chernyakov I.N., Shishov A.A

  3. Simple Statistical Model to Quantify Maximum Expected EMC in Spacecraft and Avionics Boxes

    Science.gov (United States)

    Trout, Dawn H.; Bremner, Paul

    2014-01-01

    This study shows cumulative distribution function (CDF) comparisons of composite a fairing electromagnetic field data obtained by computational electromagnetic 3D full wave modeling and laboratory testing. Test and model data correlation is shown. In addition, this presentation shows application of the power balance and extention of this method to predict the variance and maximum exptected mean of the E-field data. This is valuable for large scale evaluations of transmission inside cavities.

  4. 78 FR 58967 - Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

    Science.gov (United States)

    2013-09-25

    ...- time inspection of the affected area [between the nacelle lower fairing and the underbox wing for...) Subject Air Transport Association (ATA) of America Code 54, Nacelles/ pylons. (e) Reason This AD...

  5. F/FB-111 Avionic Systems Career Ladder, AFSC 452X3

    Science.gov (United States)

    1990-07-01

    ANTENNAS TABLE 19B ELECTRONICS PRINCIPLES USED BY 50 PERCENT OR MORE OF DAFSC 45253B PERSONNEL DIRECT.ALTERNATING CURRENT ELECTRO/MECHANICAL DEVICES SOLID...19C ELECTRONICS PRINCIPLES USED BY 50 PERCENT OR MORE OF DAFSC 45253C PERSONNEL DIRECT/ALTERNATING CURRENT ELECTRO/MECHANICAL DEVICES SOLID-STATE...with that of other similar Air Force special- ties Generally, first- and second-enlistment groups of the DAFSC 452X3 52 TABLE 19A ELECTRONICS

  6. Space Shuttle Avionics: a Redundant IMU On-Board Checkout and Redundancy Management System

    Science.gov (United States)

    Mckern, R. A.; Brown, D. G.; Dove, D. W.; Gilmore, J. P.; Landey, M. E.; Musoff, H.; Amand, J. S.; Vincent, K. T., Jr.

    1972-01-01

    A failure detection and isolation philosophy applicable to multiple off-the-shelf gimbaled IMUs are discussed. The equations developed are implemented and evaluated with actual shuttle trajectory simulations. The results of these simulations are presented for both powered and unpowered flight phases and at operational levels of four, three, and two IMUs. A multiple system checkout philosophy is developed and simulation results presented. The final task develops a laboratory test plan and defines the hardware and software requirements to implement an actual multiple system and evaluate the interim study results for space shuttle application.

  7. Aircraft Avionics and Missile System Installation Cost Study. Volume 2. Appendices F and G.

    Science.gov (United States)

    1988-02-12

    IND, ROD OF 6 0 0 0 0 .𔃻 N77032 YCA542r7’ 00 A C1741/APS-125 DUAL PULSE VTT CONPARATOR,MOD 6 1 2 2 0 77032 YCA542074 00 A C1459/05S125 DIGITAL DATA...UNIT 6 25 386 83063 E-2 1150032 Al A T-56 MATER INJECTION SYS INSTAL 1-2C 6 25 1175 83064 1-2 AIB5021 Al A IMPROVE ECCM CAPABILITY TRAC -A PRIM E-2C 6...650000 65 1000 15 100 " - MT. EST 0s9;I A/C TDI IXI TITLE LVL KIT$ QTY TOTBRS UNHRS MHRS 83164 1-2 AEIB5L� A1 B TRAC -A RADAR ANTENNA/8 CHANNEL

  8. Adaptable and Reconfigurable Modular Systems (GSFC) - Plug and Play, Distributed Avionics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In order to execute the President's Vision for Space Exploration, NASA must find ways to reduce spacecraft cost, complexity, and integration and test time while...

  9. Core Logistics Capability Policy Applied to USAF Combat Aircraft Avionics Software: A Systems Engineering Analysis

    Science.gov (United States)

    2010-06-01

    cannot make a distinction between software maintenance and development” (Sharma, 2004). ISO/ IEC 12207 Software Lifecycle Processes offers a guide to...synopsis of ISO/ IEC 12207, Raghu Singh of the Federal Aviation Administration states “Whenever a software product needs modifications, the development...Sustainment for the F-35 Lightning II. (C. Johnstun, Ed.) Crosstalk: The Journal of Defense Software Engineering , 20 (12), 9-14. 130

  10. Development and testing of a magnetic position sensor system for automotive and avionics applications

    Science.gov (United States)

    Jacobs, Bryan C.; Nelson, Carl V.

    2001-08-01

    A magnetic sensor system has been developed to measure the 3-D location and orientation of a rigid body relative to an array of magnetic dipole transmitters. A generalized solution to the measurement problem has been formulated, allowing the transmitter and receiver parameters (position, orientation, number, etc.) to be optimized for various applications. Additionally, the method of images has been used to mitigate the impact of metallic materials in close proximity to the sensor. The resulting system allows precise tracking of high-speed motion in confined metal environments. The sensor system was recently configured and tested as an abdomen displacement sensor for an automobile crash-test dummy. The test results indicate a positional accuracy of approximately 1 mm rms during 20 m/s motions. The dynamic test results also confirmed earlier covariance model predictions, which were used to optimize the sensor geometry. A covariance analysis was performed to evaluate the applicability of this magnetic position system for tracking a pilot's head motion inside an aircraft cockpit. Realistic design parameters indicate that a robust tracking system, consisting of lightweight pickup coils mounted on a pilot's helmet, and an array of transmitter coils distributed throughout a cockpit, is feasible. Recent test and covariance results are presented.

  11. Modelisation geometrique par NURBS pour le design aerodynamique des ailes d'avion

    Science.gov (United States)

    Bentamy, Anas

    The constant evolution of the computer science gives rise to many research areas especially in computer aided design. This study is part, of the advancement of the numerical methods in engineering computer aided design, specifically in aerospace science. The geometric modeling based on NURBS has been applied successfully to generate a parametric wing surface for aerodynamic design while satisfying manufacturing constraints. The goal of providing a smooth geometry described with few parameters has been achieved. In that case, a wing design including ruled surfaces at the leading edge slat and at the flap, and, curved central surfaces with intrinsic geometric property coming from conic curves, necessitates 130 control points and 15 geometric design variables. The 3D character of the wing need to be analyzed by techniques of investigation of surfaces in order to judge conveniently the visual aspect and detect any sign inversion in both directions of parametrization u and nu. Color mapping of the Gaussian curvature appears to be a very effective tools in visualization. The automation of the construction has been attained using an heuristic optimization algorithm, simulated annealing. The relative high speed of convergence to the solutions confirms its practical interest in engineering problems nowadays. The robustness of the geometric model has been tested successfully with an academic inverse design problem. The results obtained allow to foresee multiple possible applications from an extension to a complete geometric description of an airplane to the interaction with others disciplines belonging to a preliminary aeronautical design process.

  12. A Human Factors Evaluation of the Space Shuttle Cockpit Avionics Upgrade

    Science.gov (United States)

    2012-09-01

    does not. Rubio, Diaz, Martin and Puente (2004) evaluated several such measures of workload for intrusiveness, sensitivity, validity, diagnosticity...A159080). Atlanta, GA: Georgia Institute of Technology, Center for Human-Machine Systems Research. Rubio, S., Díaz, E., Martín, J., & Puente , J. M

  13. Advanced Concepts for Avionics/Weapon System Design, Development and Integration: Conference Proceedings of the Avionics Panel Symposium (45th) Held at Ottawa, Canada on 18-22 April 1983.

    Science.gov (United States)

    1983-10-01

    2L BUFFER 2E DECOMPRESSOR 2 D-A VIDEO BUFFER, SYNC RESTORE VIDEO FIGURE 8. ELEMENTS IN A DIGITAL VIDEO NETWORK This approach becoaea...slollair vein, the DFS can be employed to investigate high angle-of-attack flight, post- stall gyration, air-combat maneuvering and low-altitude terrain...for the late 1983, will investigate pilot related problems Incidental to aircraft stall /departurs, spin entry, and spin recovery. Of concern Is the

  14. A Survey of Serious Aircraft Accidents Involving Fatigue Fracture. Volume 1. Fixed-Wing Aircraft (Etude sur des Accidents Importants d’Avions du aux Effets des Fractures de Fatigue. Volume 1. Effets sur des Avions).

    Science.gov (United States)

    1983-04-01

    A115 A116 Snow S-2 3 Connecting rod 1971-75 E159 E176 E241 Snow S-2 3 Propeller blade 1966-71 F43 F65 F1O0 Stinson 108 3 Engine cylinder 1964-79 E31...Continued) LIST OF ACCIDENTS BY COUNTRY IRAN G370 IRELAND 710 G450 ISRAEL G405 ITALY C6 C7 E125 E177 JAMAICA E159 E176 E241 F211 G200 JAPAN B14 D36 E247... E176 Snow 25 Sep 72 0 S Windsor, Jamaica. Commander S2D No. I cylinder connecting rod. Ref: Jamaica. E177 Fokker F-27 15 Oct 72 0 S Rome, Italy. (ATI

  15. Identification and Reduction of Bottlenecks Concerning MICAP Re-Supply of F-16 Weapons System Avionics Line Replaceable Units

    Science.gov (United States)

    1997-09-01

    developed by Eliyahu Goldratt ], is a continual improvement philosophy that focuses on the identification and management of constraints for organizational...FedEx U.S. Government Contract Services Guide. August 1996. 51 Goldratt , Eliyahu M. The Goal: A Process of Ongoing Improvement. Second Edition. North

  16. Cryoplane, a European project of hydrogen-fueled aircraft; Cryoplane, un projet europeen d'avion a hydrogene

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2002-10-01

    The use of liquid hydrogen for the propulsion of aircraft offers an interesting alternative to fossil fuels, on the ecological point of view. The European research project 'Cryoplane' shows that the use of liquid hydrogen is feasible and that it should greatly reduce the environmental impact of air transport without any loss in security. This project, financed by the European Commission for a duration of 26 months and managed by Airbus Industries, groups together 35 partners from the industry, research centers and universities, and 11 member states. (J.S.)

  17. Vol en formation sans formation: contrôle et planification pour le vol en formation des avions sans pilote

    OpenAIRE

    2008-01-01

    This thesis presents the study and the implementation of a system that manages autonomously the configuration of a formation of unmanned aerial vehicles, or UAVs. The purposes are to improve the safety and the efficiency of a group of military UAVs, and to fill the gap between mission planning layers and formation control layers. Formation flight is particularly suited for military applications in hostile environments, that require synchronizations on target arrivals or mutual support for jam...

  18. Aircraft Trajectories Computation-Prediction-Control. Volume 1 (La Trajectoire de l’Avion Calcul-Prediction-Controle)

    Science.gov (United States)

    1990-03-01

    Vigilance and Performance in Automatized Systems. Org.: Prof A. Coblentz Laboratoire d’Anthropologie et d’Ecologie Humaine - Universit& Rene Descartes , PARIS...Humaine - Universit6 Ren6 Descartes , PARIS, September 1988 BOY G., CEP-Onera "Assistance A l’Opdrateur: Une Approche de l’Intelligence Artificielle...Appliqi6e, Universit6 Ren6 Descartes - Paris V "Effect of Monotony on Vigilance and Biomechanical Behaviour" In: Commission of European Communities

  19. Tanker Avionics/Aircrew Complement Evaluation (TAACE). Phase 0. Analysis and Mockup. Volume II. Summary of Data.

    Science.gov (United States)

    1980-05-01

    the question of how to eliminate the navigator position from the aircraft, a mission analysis and composite mission scenario were constructed, and three...fully qualified Strategic Air Command tanker (KC-135) aircrews, consisting of two pilots and a boom operator, "flew" the composite mission scenario and...However, the TF-33s would greatly enhance the mission capabilities of the aircraft. The addition of winglets will increase range and decrease fuel

  20. Aircraft Trajectories Computation-Prediction-Control (La Trajectoire de l’Avion Calcul-Prediction-Controle). Volume 2

    Science.gov (United States)

    1990-05-01

    mobile). (ii) Airborne equipment The Member States are jointly financing by means of the Agency’s budget the development and acquisition of thirty Mode S...parisienne pour la France et Malvern et Gatwick (en conteneur mobile) pour le Royaume Uni. -Equipements embarqu6s Les Etats membres financent en commun...Des 6tudes ont 6t6 entreprises dans ce sens (Bibliographie, 116f. 3), et les ovantages qui en d~coulent se mat6rialiseront At un stade ultdrieur de l

  1. Estonie 2004-2005 : y a-t-il un pilote dans l'avion? / Antoine Chalvin

    Index Scriptorium Estoniae

    Chalvin, Antoine

    2005-01-01

    Ülevaade sündmustest Eesti poliitikas ja majanduses: valitsuskoalitsiooni lagunemine, sotsiaalpoliitika ning tervishoiu probleemid, Eesti-Vene piirileping, majandusnäitajad, Eesti-Prantsusmaa suhted, EL-iga liitumise mõjud. Tabelid. Lisad: Eesti poliitiliste sündmuste kronoloogia 2004-2005; Valimistulemused alates 2001; Valitsuse koosseis juunis 2005

  2. Fast Prediction with Sparse Multikernel LS-SVR Using Multiple Relevant Time Series and Its Application in Avionics System

    Directory of Open Access Journals (Sweden)

    Yang M. Guo

    2015-01-01

    Full Text Available Health trend prediction is critical to ensure the safe operation of highly reliable systems. However, complex systems often present complex dynamic behaviors and uncertainty, which makes it difficult to develop a precise physical prediction model. Therefore, time series is often used for prediction in this case. In this paper, in order to obtain better prediction accuracy in shorter computation time, we propose a new scheme which utilizes multiple relevant time series to enhance the completeness of the information and adopts a prediction model based on least squares support vector regression (LS-SVR to perform prediction. In the scheme, we apply two innovative ways to overcome the drawbacks of the reported approaches. One is to remove certain support vectors by measuring the linear correlation to increase sparseness of LS-SVR; the other one is to determine the linear combination weights of multiple kernels by calculating the root mean squared error of each basis kernel. The results of prediction experiments indicate preliminarily that the proposed method is an effective approach for its good prediction accuracy and low computation time, and it is a valuable method in applications.

  3. Cognitive Task Analysis and Intelligent Computer-Based Training Systems: Lessons Learned from Coached Practice Environments in Air Force Avionics.

    Science.gov (United States)

    Katz, Sandra N.; Hall, Ellen; Lesgold, Alan

    This paper describes some results of a collaborative effort between the University of Pittsburgh and the Air Force to develop advanced troubleshooting training for F-15 maintenance technicians. The focus is on the cognitive task methodology used in the development of three intelligent tutoring systems to inform their instructional content and…

  4. Digital Avionics Information System (DAIS): Life Cycle Cost Impact Modeling System (LCCIM)--A Managerial Overview. Final Report.

    Science.gov (United States)

    Goclowski, John C.; Baran, H. Anthony

    This report gives a managerial overview of the Life Cycle Cost Impact Modeling System (LCCIM), which was designed to provide the Air Force with an in-house capability of assessing the life cycle cost impact of weapon system design alternatives. LCCIM consists of computer programs and the analyses which the user must perform to generate input data.…

  5. Aircraft Trajectories Computation-Prediction-Control (La Trajectoire de l’Avion Calcul-Prediction-Controle). Volume 3

    Science.gov (United States)

    1990-05-01

    Operation 32E A-26 by Andre Benoit, Sip Swierstra and Ren6 de Wispelaere LE CONTROLEUR DE LA CIRCULATION AERIENNE ET L’AUTOMATISATION: 32F A-27 Conflit ...contrite 6tendiue ainsi constitu6e, l’ensemble de l’espace a rien concern6 relevant d’un centre de gestion d~terminu. A-12 PART IV-B - PROSPECT : A FUTURE...6conomique optimales d’une part, et Ia n6cessitd de faire face bk un trafic croissant d’autre part, imposent aux responsables de Ia Gestion du Trafic A~rien

  6. 机箱盖板金属型铸造工艺%Permanent Molding of Avionics Case Cover Plate

    Institute of Scientific and Technical Information of China (English)

    曾建民; 顾红; 路平; 沈成龙; 肖宪波

    2001-01-01

    In the permanent molding process, computer emulation technology is adopted to simulate the process of mould filling and solidification and to optimize the casting parameters.%采用计算机仿真技术对机箱盖板金属型铸造过程进行了充型和凝固模拟,并对铸造工艺进行了优化。

  7. AGARD Flight Test Technique Series. Volume 15. Introduction to Avionics Flight Test (Introduction aux Essais des Systemes D’armes)

    Science.gov (United States)

    1996-03-01

    features and thus angular. As a simplistic example, a the signal to noise characteristics of picket fence could be modeled with a the sensor can be...Volume Plans, by Anon., 1992. 12, 1980. 66. U. S. Navy Report No. 533, 54. Smith, Sidney L. and Mosier, Jane Anthropometry of Naval Aviators, N

  8. Flight Computer Processing Avionics for Space Station Microgravity Experiments: A Risk Assessment of Commercial Off-the-Shelf Utilization

    Science.gov (United States)

    Estes, Howard; Liggin, Karl; Crawford, Kevin; Humphries, Rick (Technical Monitor)

    2001-01-01

    NASA/Marshall Space Flight Center (MSFC) is continually looking for ways to reduce the costs and schedule and minimize the technical risks during the development of microgravity programs. One of the more prominent ways to minimize the cost and schedule is to use off-the-shelf hardware (OTS). However, the use of OTS often increases the risk. This paper addresses relevant factors considered during the selection and utilization of commercial off-the-shelf (COTS) flight computer processing equipment for the control of space station microgravity experiments. The paper will also discuss how to minimize the technical risks when using COTS processing hardware. Two microgravity experiments for which the COTS processing equipment is being evaluated for are the Equiaxed Dendritic Solidification Experiment (EDSE) and the Self-diffusion in Liquid Elements (SDLE) experiment. Since MSFC is the lead center for Microgravity research, EDSE and SDLE processor selection will be closely watched by other experiments that are being designed to meet payload carrier requirements. This includes the payload carriers planned for the International Space Station (ISS). The purpose of EDSE is to continue to investigate microstructural evolution of, and thermal interactions between multiple dendrites growing under diffusion controlled conditions. The purpose of SDLE is to determine accurate self-diffusivity data as a function of temperature for liquid elements selected as representative of class-like structures. In 1999 MSFC initiated a Center Director's Discretionary Fund (CDDF) effort to investigate and determine the optimal commercial data bus architecture that could lead to faster, better, and lower cost data acquisition systems for the control of microgravity experiments. As part of this effort various commercial data acquisition systems were acquired and evaluated. This included equipment with various form factors, (3U, 6U, others) and equipment that utilized various bus structures, (VME, PC104, STD bus). This evaluation of hardware was performed in conjunction with a trade study that considered over twenty (20) different factors relevant to the selection of an optimum design approach. These factors included; safety, sizing and timing, radiation hardness and single event upset, power consumption, heat dissipation, size and volume, expected service life, maintainability, heritage, operating systems, requirements for software reuse, availability of compatible interface boards, relative cost, schedule, reliability, EMI/EMC factors, "hot swap" capability, standards for conduction cooling, I/O capabilities, unique carrier requirements and operating system considerations. The approach to evaluate Safety as part of this study included a review of the Preliminary Hazard Analysis (PHA) for each of the experiment designs and a determination of how each hazard could be addressed and eliminated when different processors were selected. This included evaluating various design approaches and trade-offs between fault tolerant designs and fail-safe designs in accordance with NSTS 1700.7B. This will include the results of radiation testing where available. Various operating systems, such as VxWorks, Linux, QNX, and Embedded NT are evaluated and the advantages and disadvantages of their utilization are also addressed. Design implementation strategies for the various operating systems are considered and discussed. This paper presents the results and recommendations from this trade study. Preliminary conclusions from this study are that safety concerns from lack or radiation testing on COTS equipment can be addressed by additional testing and design considerations, the PC104 bus provided adequate I/O for the SDLE and EDSE microgravity experiments, and PC104 bus components offered significant advantages over VME and cPCI for weight and space reductions.

  9. F/FB-111 Avionics Test Station and Component Specialist/Technician (AFSC 451X6) Training Requirements Analysis

    Science.gov (United States)

    1991-11-01

    have not yet been made. Part of the agreement under RWF was to make no reductions until completion of the 3-year transition period. Since the...TO HANDLE LIQUID NITROGEN 1 1 S USE SAFETY WIRE PLIERS 2 1 S USE SCALER NETWORK ANALYZER - 1 S USE SCRAPER 2 14 S USE SIGNAL GENERATOR 1 - S USE...BANPASS FILTER 1 1 S USE TWT AMPLIFIER FOR SELF-VERIFICATION 1 1 S USE TWT FOR VERIFY SELF-VERIFICATION - 1 S USE ULTRASONIC CLEANER TO CLEAN FILTERS

  10. Getting Smarter at Managing Avionic Software: The Results of a Two-Day Requirements Elicitation Workshop With DTAES

    Science.gov (United States)

    2007-10-01

    Charpentier, Robert; Salois, Martin; Bergeron, Jean; Debbabi, Mourad; Desharnais, Jules; Giasson, Emmanuel ; Ktari, Béchir; Michaud, Frédéric, and Tawbi...Security Establishment (CSE). Ottawa, Canada: (CSE). Read the PDF. 5. Shepard, Terry; Kelly, Diane; Smith, Ron; Chisholm, Ron; Jackson, Todd , and Mondoux

  11. Aircraft Avionics and Missile System Installation Cost Study. Volume 1. Technical Report and Appendices A through E

    Science.gov (United States)

    1988-02-12

    adj.) = . 9313 SEE = 74 Mean = 209.85 Range = mhrs_100: 1.14 to 817 hw cac; 21 to 262 cabin: 0 to 117 cabrem: 0 to 339.6 IV-25 This CER applies to cases...300 gallon drop tank and the ALQ-99 Tactical Jamming Pod, the EA -6B did not have an ordnance carriage capability. This l.mited both training and...installation of the enhanced digital scan converter group (EDSCG). GFE EDSCG are required, consisting of: 1 ea - Signa. Data Converter, Intra Target

  12. Joint Integrated Avionics Working Group (JIAWG) Object-Oriented Domain Analysis Method (JODA). Version 3.1.

    Science.gov (United States)

    1992-11-01

    describing how, when, where, and why to select options, services, and instances. (Rationale is necessary when the reuser must select between options in the...Traceability defines a road map for the reuser during Applications Engineering. 2.2 Applications Engineering For each system that is constructed using reuse...the reuser in understanding the domain is all important. CMU/SEI-92-SR-3 21 Relevant Domain Dmi 3.1 Preare o i om xIai DeleDefin ito domain edomain

  13. Integrated Test Bed Facility

    Data.gov (United States)

    Federal Laboratory Consortium — The ITB's avionics system is composed of multiple high performance processors, embedded software, and data communication systems. The avionics embedded software is a...

  14. Estudio de las cualidades de vuelo lateral-direccional de aviones de transporte con timón de dirección no convencional

    OpenAIRE

    Castillo Acero, Miguel Ángel

    2017-01-01

    La historia de la aviación está vinculada a la investigación y el desarrollo de diferentes ámbitos científicos físicos y matemáticos. En la literatura se pueden encontrar numerosos ejemplos de estudios no sólo de nuevas configuraciones no convencionales de aeronaves, sino también de desarrollos de nuevos materiales y procesos para que las aeronaves sean más ligeras y resistentes. También aparecen publicados desarrollos en la predicción de las cargas aerodinámicas frente a las que el avión se ...

  15. Estudio de las cualidades de vuelo lateral-direccional de aviones de transporte con timón de dirección no convencional

    OpenAIRE

    Castillo Acero, Miguel Ángel

    2016-01-01

    La historia de la aviación está vinculada a la investigación y el desarrollo de diferentes ámbitos científicos físicos y matemáticos. En la literatura se pueden encontrar numerosos ejemplos de estudios no sólo de nuevas configuraciones no convencionales de aeronaves, sino también de desarrollos de nuevos materiales y procesos para que las aeronaves sean más ligeras y resistentes. También aparecen publicados desarrollos en la predicción de las cargas aerodinámicas frente a las que el avión se ...

  16. Avionics Collaborative Engineering Technology Delivery Order 0035: Secure Knowledge Management (SKM) Technology Research Roadmap - Technology Trends for Collaborative Information and Knowledge Management Research

    Science.gov (United States)

    2004-06-01

    International Corporation 4031 Colonel Glenn Highway Beavercreek, OH 45431-1673 Nikolaos G. Bourbakis Wright State University Information Technology...NUMBER 2432 5e. TASK NUMBER 04 6. AUTHOR(S) Russell F. Moody (Science Applications International Corporation) Nikolaos G. Bourbakis (Wright...modeling, retrieving, distributing, and publishing documents on the Web ( Bourbakis ) − Research cryptanalysis. − System security. − Self-healing

  17. ARINC818在航空电子视频系统中的应用%Application of ARINC 818 in Avionics Video System

    Institute of Scientific and Technical Information of China (English)

    冯晓旺; 蓝海文

    2011-01-01

    @@ 伴随航空电子技术的飞速发展,航空电子系统构造变得更加复杂,整个系统的数字化信息量急剧增加,传统的ARINC429、Mil-STD-1553等总线已经不能满足新型飞机航空电子系统的技术需求[1-2],因此传统的总线技术正逐步被新一代航空数据总线技术所替代,国外新型的商业和军用航李航天项目中的航空电子系统采用的总线已经开始转向光纤通道(Fiber-Channel)和航空电子全双工以太网(AFDX)等新技术[3-4].

  18. Workshop on Avionics Corrosion Control: Meeting of the Structures and Materials Panel of AGARD (62nd) Held in Hovik (Norway) on 16-17 April 1986.

    Science.gov (United States)

    1987-09-01

    transparent waterproof seal which, if corrosion is detected through the transparency, is easily removed with a solvent for treatment of the corrosion...This paper deals with them botk, One has only a cosmetic effect on electronic modules and, so far, no failure can be related to It. The other one...products used to build, maintain or fix must not be hazardous to the health, - the ratio cost/sePvice must be evaluated, - finally the cosmetic aspect

  19. 民用机载航电系统安全性实现方法分析%Study on Civil Avionics System Safety

    Institute of Scientific and Technical Information of China (English)

    施劲松; 步鑫

    2014-01-01

    Safety is the key base of airworthiness. To achieve safety goal requires complex system engineering process which includes systematic planning, overall program management and application of tools and methods. This paper analyzed how to establish the team,how to use proper development process and analysis tools in order to realize safety goal.%安全性是适航的重要基础,为实现规定的安全性目标,必须系统策划,统筹管理,合理配置资源,综合应用各类分析方法和工具。本文就安全性工作团队的组建,项目开发使用的流程,如何有效使用分析工具等问题阐述了安全性实现的一些方法。

  20. Mission Planning Systems for Tactical Aircraft (Pre-Flight and In- Flight) (Systemes de Planification des Missions pour Avions Tactiques (Avant Vol et en Vol)

    Science.gov (United States)

    1991-05-01

    specifically to meet this requiremnenL 4.2.2. Evaluation of Current Procedures. leelofinterpeability i tues aciebed oreq if an effective Ergonomi , The...include 6.2.6. In-Flight Ergonomi Isue routes, timings, IP, fuel load etc. If a degree of re planning is to be carried out in flight. additional 6-26.1

  1. Optimisation des trajectoires d'un systeme de gestion de vol d'avions pour la reduction des couts de vol

    Science.gov (United States)

    Sidibe, Souleymane

    The implementation and monitoring of operational flight plans is a major occupation for a crew of commercial flights. The purpose of this operation is to set the vertical and lateral trajectories followed by airplane during phases of flight: climb, cruise, descent, etc. These trajectories are subjected to conflicting economical constraints: minimization of flight time and minimization of fuel consumed and environmental constraints. In its task of mission planning, the crew is assisted by the Flight Management System (FMS) which is used to construct the path to follow and to predict the behaviour of the aircraft along the flight plan. The FMS considered in our research, particularly includes an optimization model of flight only by calculating the optimal speed profile that minimizes the overall cost of flight synthesized by a criterion of cost index following a steady cruising altitude. However, the model based solely on optimization of the speed profile is not sufficient. It is necessary to expand the current optimization for simultaneous optimization of the speed and altitude in order to determine an optimum cruise altitude that minimizes the overall cost when the path is flown with the optimal speed profile. Then, a new program was developed. The latter is based on the method of dynamic programming invented by Bellman to solve problems of optimal paths. In addition, the improvement passes through research new patterns of trajectories integrating ascendant cruises and using the lateral plane with the effect of the weather: wind and temperature. Finally, for better optimization, the program takes into account constraint of flight domain of aircrafts which utilize the FMS.

  2. Aging Aircraft Fleets: Structural and Other Subsystem Aspects (le Vieillissement des flottes d’avions militaires : aspects structures et autres sous-systemes)

    Science.gov (United States)

    2007-11-02

    disbonding between the face sheets and honeycomb core. In addition, core buckling is seen. Figure 11. Typical Impact Damage in Sandwich Structure with...significant research and development efforts currently underway in the area of nondestructive evaluation of aging aircraft . NASA LaRC and several...composite, sandwich construction) 2. Type of structural component to be repaired (skin, spar, rib, longeron, etc.) 3. Type and extent of damage (e.g

  3. 77 FR 67557 - Special Conditions: ATR-GIE Avions de Transport Regional, Models ATR42-500 and ATR72-212A...

    Science.gov (United States)

    2012-11-13

    ...-engine, turbo- propeller driven. The Model ATR42-500 has a maximum takeoff weight of 41,005 pounds and an... Privacy Act Statement can be found in the Federal Register published on April 11, 2000 (65 FR...

  4. Rotary-Balance Testing for Aircraft Dynamics (Les Essais sur Balance Rotative pour l’Etude de la Dynamique du Vol de l’Avion)

    Science.gov (United States)

    1990-01-01

    Applied Yawing Moments by Use of Rotary Balance Data. NACA TN 3321, 1954. 16. Bazzocchi, B.: Un Metodo per la Deterininazione alla Galleria del Vento...and’Barnhart, B. Spin Prediction Techniques. J. of Aircraft, Vol. 20, No. 2, Feb. 1983, pp. 97-101. 2. Valtorta, E.: Analisi delle prove in galleria con

  5. Digital Avionics Information System (DAIS): Life Cycle Cost Impact Modeling System Reliability, Maintainability, and Cost Model (RMCM)--Description. Users Guide. Final Report.

    Science.gov (United States)

    Goclowski, John C.; And Others

    The Reliability, Maintainability, and Cost Model (RMCM) described in this report is an interactive mathematical model with a built-in sensitivity analysis capability. It is a major component of the Life Cycle Cost Impact Model (LCCIM), which was developed as part of the DAIS advanced development program to be used to assess the potential impacts…

  6. Production of Reliable Flight Crucial Software: Validation Methods Research for Fault Tolerant Avionics and Control Systems Sub-Working Group Meeting

    Science.gov (United States)

    Dunham, J. R. (Editor); Knight, J. C. (Editor)

    1982-01-01

    The state of the art in the production of crucial software for flight control applications was addressed. The association between reliability metrics and software is considered. Thirteen software development projects are discussed. A short term need for research in the areas of tool development and software fault tolerance was indicated. For the long term, research in format verification or proof methods was recommended. Formal specification and software reliability modeling, were recommended as topics for both short and long term research.

  7. Injury Prevention in Aircraft Crashes: Investigative Techniques and Applications (la Prevention des lesions lors des accidents d’ avions: les techniques d’investigation et leurs applications)

    Science.gov (United States)

    1998-02-01

    during a survivable crash, emergency escape through a chute was simulated to investigate body clearances and possible impacts with aircraft structures...LOADS / DRAG CHUTES B-20 Quest Accession Number : 94N13972 94N13972# NASA STAR Technical Report Issue: 02 An assessment of the potential for neck...Coordonnateur AGARD - VSL Etat-major de la Force aerienne Quartier Reine Elisabeth Rue d’Evere, B-1140 Bruxelles CANADA Directeur - Gestion de

  8. Aerodynamics of Combat Aircraft Controls and of Ground Effects (L’Aerodynamique des Commandes des Avions de Combat et des Effets de Sol)

    Science.gov (United States)

    1991-07-01

    maneuverability and short field capability. Mangold and Wedekind (ref 16) addressed some of the same issues as Ref 1, but with an emphasis on pitch...Deployment on the Transient Forces on an Aerofoil" 16. Mangold, P., Wedekind , G., "Inflight Thrust Vectoring - A Further Degree of Freedom in the...Aerodynamic/Flightmechanical Design of Modern Fighter Aicraft" 17. Holmes, M., et.al., "A Propulsion View of Ground Effects Research" 12 18. Wedekind , G

  9. Proceedings Papers of the AFSC (Air Force Systems Command) Avionics Standardization Conference (2nd) Held at Dayton, Ohio on 30 November-2 December 1982. Volume 1.

    Science.gov (United States)

    1982-11-01

    Computers, Dr. Clive D. Leedham, Delco Electronics Division, General Motors Corporation 0 The Use of Computer ISA and Software Standards at 447...Carolyn, 39 Lane, J. H., 405 Garcia, Edwin M., 479 Lang, P. H., 93 Geyer, David W., 659 Lautner, D. E., 111, 123 Geyer, Manvel, 447 Leedham, Clive 0., 445... Barker , 󈧔-Bit Radiation-Hard Emulating Computer, Proc. IEEE NAECON, May 1981. MULTIBUS"’ is a trademark of Intel Corporation. This paper copyright

  10. Proceedings Papers of the AFSC (Air Force Systems Command) Avionics Standardization Conference (2nd) Held at Dayton, Ohio on 30 November-2 December 1982. Volume 2

    Science.gov (United States)

    1982-11-01

    a computer. Many of these come frcm the need for large offchip RAMs or ROMs for the microstore, and the buffer circuits needed to repower the chip set...demanding comparable applications now exist in the commercial market. These include robotics and computerized tomography. Military MCs are also built in

  11. Impact of Mobile phone in the Air and Random Access Channel RACH with Time Division Multiple Access TDMA Noise in Aircraft Avionics

    OpenAIRE

    Lau, Siow Shyong

    2014-01-01

    Mobile phone 1800MHz band already allowed to be used in some airlines. Many studies talked about lower the mobile phone output power to the lowest of 0dBm, but seldom talk about the Random Access Channel RACH, which will emit at the highest power of 30dBm at the instant of call making and is not controllable until the connection between the Base Station and mobile is made.Hence the impact of RACH and TDMA noise generated in the aircraft.

  12. Proceedings Papers of the AFSC (Air Force Systems Command) Avionics Standardization Conference (2nd) Held at Dayton, Ohio on 30 November - 2 December 1982. Volume 10. Addendum.

    Science.gov (United States)

    1982-11-01

    Government procurement operacion , che united States Government thereby incurs no responsibility nor any obligation w atsoever; and the fact that the...layout of data can be explicitly defined in JOVIAL and complex tables of data can be defined to represent vectors, matrices , arrays, etc. J73 permits

  13. Engine jet entrainment in the near field of an aircraft; Entrainement du jet d`un reacteur dans le champ aerodynamique proche d`un avion

    Energy Technology Data Exchange (ETDEWEB)

    Garnier, F.; Jacquin, L.; Laverdant, A.

    1997-12-31

    A simplified approach has been applied to analyse the mixing and entrainment processes of the engine exhaust through their interaction with the vortex wake of an aircraft. Our investigation is focused on the near field, extending from exit nozzle to the beginning of the vortex phase (i.e. to about twenty seconds after the wake is generated). This study is performed using an integral model and a numerical simulation for a two engine large civil aircraft. The properties of the wing-tip vortices on the calculation of the dilution ratio (defined as a tracer concentration) have been shown. The mixing process is also affected by the buoyancy effect, but only after the jet regime, when the trapping in the vortex core has occurred. Qualitative comparison with contrail photography shows similar features. Finally the distortion and stretching of the plume streamlines inside the vortices can be observed, and the role of the descent of the vortices on the maximum tracer concentration has been discussed. (author) 19 refs.

  14. Validation expérimentale du modèle brosse pour le freinage des avions sur les pistes mouillées

    OpenAIRE

    GERTHOFFERT, Jonathan; Cerezo, Véronique; Bouteldja, Mohamed; Do, Minh Tan

    2015-01-01

    JIFT 2015 - 27ème Journées Internationales Francophones de Tribologie, NANTES, FRANCE, 27-/05/2015 - 29/05/2015; Aircraft braking performances can be greatly reduced on water- or snow-covered runways. Calculations of landing distances are then difficult due to the complex tribological phenomenon between the tire and the contaminated runway. In order to provide pilots with accurate and robust information, a tribometer has been designed and a model is under development to interpret its measurem...

  15. Avionic Sensor Systems and Aerospace Photographic Systems Repair Career Ladders AFSCs 322X2A, 322X2C, and 404X1.

    Science.gov (United States)

    1984-07-01

    3ABR322X2C is 98 days; and course 3ABR404X1 is 73 days in duration. The A- and C-shred attend a 226-hour G3AQR32020-005 Electronics Principles Course...The 404X1 receive electronics principles incorporated into their regular curriculum for a total of 183 hours. Successful completion of the tech school... Electronics Principles Inventory (EPI) was recently completed which included the 322X2A AFSC. The goal of an EPI is to obtain information on percent

  16. Mission Planning for Tactical Aircraft (Preflight and In-Flight) (Systemes de Planification des Missions Pour Avions Tactiques) (Avant Vol et en Vol).

    Science.gov (United States)

    1992-12-01

    ation T,\\F Tactical Ai- ’~orce NBC Nuclear Biological Chemical TAMPS Tactical Aircraft Mission Planning System NLR National Aerospace Laboratory TEAMS...features are two dimensional. Once the map has been trans- will appear to flicker. A refresh rate of 60 frames per second is formed from databse

  17. Calcul direct du rayonnement acoustique généré par une cavité cylindrique sous une aile d'avion

    OpenAIRE

    2011-01-01

    Aerodynamically generated noise sources are multiple for an airplane. During the landing phase, airframe noise is the main source. At the instigation of Airbus, the project AEROCAV (Aeroacoustics of cavities) deals with the noise produced by cylindrical burst-disk cavities located under the wings. An intense tonal noise is emitted. Numerical simulations of the noise generated by these cylindrical cavities are performed to investigate the noise source mechanisms by using Direct Noise Computati...

  18. Microwave Antennas for Avionics. Lecture Series of the Avionics Panel and the Consultant and Exchange Programme Held in Rome, Italy on 7-8 May 1987; Guenzburg, Germany on 11-12 May 1987 and Ankara, Turkey on 14-15 May 1987.

    Science.gov (United States)

    1987-04-01

    by , , Klaus Solbach ’ ■"’."’ AEG, Radio & Radar Systems Division ■ ■ Radar Subdivision A14 ElOl...Silver, Editor, "Microwave Antenna Theory and Design", Rad. Lab. Series, MC Graw -Hill Book Company, 1949 /5/ R. C. Hansen, Editor, "Microwave

  19. Euroopa kolm nobedaimat gaselli / Askur Alas

    Index Scriptorium Estoniae

    Alas, Askur, 1973-

    2007-01-01

    Euroopas 2006. aastal kõige kiiremini kasvanud keskmise suurusega ettevõtetest: Prantsuse IT-firma Gameloft, Islandi transpordi- ja logistikafirma Avion Group ning Prantsuse tehnoloogiafirma Assystem. Lisa: Gamelofti mängud; Gameloft, Avion Group, Assystem

  20. Integrated Target Acquisition and Fire Control Systems: Avionics Panel Symposium Held in Ottawa, Canada on 7-10 October 1991 (Systemes Integres d’Acquisition d’Objectifs et de Conduite de Tir)

    Science.gov (United States)

    1992-02-01

    ces 22-3 ambigui~s en classant ces cibles potentielles en - Apprentissage "cible" ou "fausse alarme", Parnii lcs objets class~s dans la cat~gorie...from a variety of cockpit instruments in favour of the 2 dedicated "Radio Frequency Indicator". MFDs and I CDU per crew station. Some in- struments...prioritization are relative displays, backup flight instruments are geometry, position within the threat provided for flight safety reasons. The missile

  1. Aerodynamic Engine/Airframe Integration for High Performance Aircraft and Missiles (L’Integration Aerodynamique des Moteurs et des Cellules dans les Avions et les Missiles a Hautes Performances)

    Science.gov (United States)

    1992-09-01

    contact entre ]a maquetle et les patois , tout en emptchant urt rdpanitions de pression mesurdes (Fig.8). La nacelle seule provoque unec 6eoulement...8217occupation de la maquente dans ]a seine, des fotrnes intettne, ’decan maximal ye situars a 40% de 1’envergute du tron~on d’aile. En de patois haute

  2. The Application of Fibre Channel to MIL-STD-1553 Based Avionics System Networks%光纤通道在基于MIL-STD-1553的航空电子系统网络中的应用

    Institute of Scientific and Technical Information of China (English)

    刘飞

    2007-01-01

    光纤通道作为新一代的航空电子系统通信网络技术,具有传输速度高、延时低、传输距离远和可靠性高等特性,高达4G bps的数据传输带宽,为其上层通信协议提供了一种通用的高速率的数据传输通道.FC-1553作为光纤通道上层通信协议之一,对MIL-STD-1553通信协议具有完全的兼容性,它继承了传统MIL-STD-1553通信协议的基本特征,实现了向光纤通道链路层的映射,从而扩展了通信网络的结构,提高了网络的通信能力.本文首先介绍MIL-STD-1553和光纤通道的基本特性,然后描述在光纤通道中对1553通信协议的映射,最后,提出了基于光纤通道和MIL-STD-1553的航空电子系统通信网络结构.

  3. La virgen de los sicarios leída a contrapelo: para un análisis del flâneur en tiempos de aviones y redefinición del espacio público

    Directory of Open Access Journals (Sweden)

    Jorge Joaquín Locane

    2013-04-01

    Full Text Available El presente artículo presenta una lectura de La virgen de los sicarios (1994 de Fernando Vallejoalgo desviada de los ejes habituales. Tomando distancia de los análisis que se concentran en laviolencia y en la figura del sicario, y, partiendo de una perspectiva narratológica, propone tomarcomo objeto central el desplazamiento que Fernando, en tanto flâneur anacrónico, realiza porla ciudad de Medellín. Desde este enfoque, se muestra cómo este movimiento, guiado por unimpulso de atracción hacia lo siniestro, desafía fronteras y produce una hibridación con el “otro”que se expresa en la evolución del lenguaje del protagonista. Asimismo, se observa cómo elmovimiento realizado por el personaje sirve para dar cuenta críticamente de los atributos queadquiere el espacio local en el contexto del actual diseño geopolítico global.

  4. Understanding and Modeling Vortical Flows to Improve the Technology Readiness Level for Military Aircraft (Comprehension et Modelisation des Flux de Vortex Pour Ameliorer le Niveau de Maturite Technologique au Profit des Avions Militaires)

    Science.gov (United States)

    2009-10-01

    Edges (Medium Radius) for M = 0.07, Rmac = 1 x 106 and α = 13° at Two Stations in the Section x/cr = 0.6 from the Hot - Wire Anemometry at TU...display HSCT High Speed Civil Transport HSR High Speed Research HWA Hot Wire Anemometry IR Infra Red (technique) ITAR International Traffic in...unsteady surface pressure measurements, stereo particle image velocimetry and hot - wire anemometry . The results are presented as distributions of mean

  5. Long-term monitoring of air crew exposure onboard of Czech Airlines aircraft; Monitorage a long terme de l'exposition du personnel navigant a bord d'un avion de la compagnie aerienne Czech Airlines

    Energy Technology Data Exchange (ETDEWEB)

    Ploc, O.; Spurny, F. [Nuclear Physics Institute AS CR, Dept. of Radiation Dosimetry, Prague (Czech Republic); Ploc, O. [Czech Technical Univ., Dept. of Dosimetry and Application of Ionizing Radiation, Prague (Czech Republic)

    2007-01-15

    This contribution presents new results related to the aircraft crew exposure onboard aircraft of Czech air companies. First, the results of long term monitoring onboard of an aircraft of Czech Airlines are presented. In the period May-December 2005, 494 individual flights have been followed using MDU-Liulin Si-diode based spectrometer, together with thermoluminescent and track detectors. The results of measurements are analyzed and compared with those of calculation performed with CARI6 and EPCARD3.2 codes. Monitoring period represented about 4.6 times more than usual annual engagement of an aircrew (600 hours). Total effective dose during these 2 755 hours was between Il and 12 mSv, following the considered method of evaluation. Both the measuring and calculation methods correlate well. This fact leads to confirmation of the routine method evaluating the level of aircraft crew exposure using CARI6 code as correct for this purpose. Second, the results of individual monitoring of aircrew members obtained during few last years by this routine method are presented; general tendencies of aircraft crew onboard exposure of Czech air companies are outlined. The contribution of aircrew exposure to total occupational exposure in the Czech Republic represents about 20%. (authors)

  6. Nouvelle methode d'optimisation du cout d'un vol par l'utilisation d'un systeme de gestion de vol et sa validation sur un avion Lockheed L-1011 TriStar

    Science.gov (United States)

    Gagne, Jocelyn

    Usually, flights optimization and planning will take place before flight, on ground. However, it is not always feasible to do such optimization, or sometime unpredictable events may force pilots to change the flight path. In those circumstances, the pilots can only rely on charts or their Flight Management System (FMS) in order to maintain an economic flight. However, those FMS often rely on those same charts, which will not take into consideration different parameters, such as the cost index, the length on the flight or the weather. Even if some FMS take into consideration the weather, they may only rely on manually entered or limited data that could be outdated, insufficient or incomplete. The alleviate these problems, the function program's that was developed is mainly to determine the optimum flight profile for an aircraft, or more precisely, at the lowest overall cost, considering a take-off weight and weather conditions. The total cost is based on the value of time as well as the cost of fuel, resulting in the use of a ratio called the cost index. This index allows both to prioritize either the time or fuel consumption according to the costs related to a specific flight and/or airline. Thus, from a weight, the weather (wind, temperature, pressure), and the cost index, the program will calculate from the "Performance DataBase" (PDB) of a specific airplane an optimal flight profile over a given distance. The algorithm is based on linear interpolations in the performances tables using the Lagrange method. Moreover, in order to fully optimize the flight, the current program can, according to departure date and coordinates, download the latest available forecast from environment Canada website and calculate the optimum flight accordingly. The forecast data use by the program take the form of a 0.6 × 0.6 degrees grid in which the effects of wind, pressure and temperature are interpolated according to the aircraft geographical position and time. Using these tables, performances and forecasts, the program is therefore able to calculate the optimum profile from ground, but also in flight, if any change would occur on the path. Because all data is tabulated and not calculated, the required calculation power remains low, resulting in a short calculation time. Keywords: optimization, algorithm, simulation, cost.

  7. Applications of Superconductivity to Avionics: Proceedings of a Conference Held in Bath, England on May 7-8, 1990 (Les Applications de la Supraconductivite dans le Domains de l’Avionique)

    Science.gov (United States)

    1990-10-01

    Michel Brice Dr Ron W.MacPherson D~r (Gerard (’reuzet Directeur Technique A/DS POL Chef du Laboratotrc dAnalss BYP 123 Dept, of National D)efence l’hN...D. Smith, Rt. 0. Sandell . A. 11. Silver. and 1. 1’. Blurch. "Chaos and Bifurcation in Josephson Voliage- Control led Oscillators." IEEE Trans. Mago...electronic units fabricalion. 10. Michel et al. - C. R. Acad. Sci. Paris 304 11. 1059 (19,S7) 11. Ambegaokar, Baratoff - Phys. Rev Lctt 10, 486 (1963

  8. The Utilization of Advanced Composites in Military Aircraft Held in San Diego, California on 7-11 October 1991 (L’Emploi des Materiaux Composites de Pointe pour les Avions Militaires)

    Science.gov (United States)

    1992-04-01

    performed with: P = C.05 Tes!: Frequency x 2.5 Fz. rLL r Design Limit LA U S Fiq.l0 LOAD S1KIR[CIRM F’OR IATIGU[ TESI I.2-II COMPRESSION :1I:T:AL Bt,’C...Aerospace Series, Fluids for Assessment of Non-Metallic Materials. :3. ISO 1817 Rubber, Vulcanized -Effect of Liquids. 13-4 FLUID INTERACTIONS a7 0 6

  9. 航电设备内冷通道扩展表面的传热与流动特性研究%Thermal Hydraulic Performance of the Extended Surface Use in an Avionic System Internal Cooling Channels

    Institute of Scientific and Technical Information of China (English)

    胡家渝

    2013-01-01

    Numeric simulation on heat transfer and pressure drop characteristic for 25 type CNC milled strip fin were performed.Using the Taguchi experimental design method,deferent design parameters and their levels were investigated.The general correlation for j-factor and f-factor were derived by regression analysis.The numeric has also been valid by wind tunnel and the deviations of the method are less than 15%.Range method has also been performed,and it has been reviled that the most effective factor to f is channel height H and most effective factor to j is x direction fin spacing.%在某航空电子冷却机箱中,综合考虑其使用环境,采用了CNC加工的叉排直肋作为其内冷肋化通道.为找出影响该类扩展表面的传热与流动特性的主要因素,采用正交实验设计的方法,对不同结构参数的25种肋片应用Fluent进行了数值模拟,通过极差分析研究了对传热流动特性影响最大的结构参数,同时获得了流动参数范围内用于工程计算的jf计算关联式.

  10. Information note about the protection of nuclear facilities against aircraft crashes; Note d'information sur la protection des installations nucleaires contre les chutes d'avions

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    The protection of nuclear facilities against external risks (earthquakes, floods, fires etc..) is an aspect of safety taken into consideration by the French authority of nuclear safety (ASN). Concerning the aircraft crashes, the fundamental safety rules make three categories of aircraft: the small civil aircraft (weight < 5.7 t), the military aircraft, and the commercial aircraft (w > 5.7 t). Nuclear facilities are designed to resist against crashes of aircraft from the first category only, because the probability of the accidental crash of a big aircraft are extremely low. This document comprises an information note about the protection of nuclear facilities against aircraft crashes, a dossier about the safety of nuclear facilities with respect to external risks in general (natural disasters and aircraft crashes), and an article about the protection of nuclear power plants against aircraft crashes (design, safety measures, regulation, surveillance, experience feedback). (J.S.)

  11. SAE航空电子系统分部标准对民机研制适用性研究%Study on Standards Applicability for Civil Plane of Avionics System Division of SAE

    Institute of Scientific and Technical Information of China (English)

    朱晓飞

    2016-01-01

    分析了SAE标准中航空电子系统分部使用范围,研究了SAE标准与适航要求的匹配性,确定了对我国民用航空电子系统设计研制的适用性,提出了SAE航空电子分部标准的采用策略,给出了民用航空电子领域国外标准引进的策略建议,为更加科学、合理、有效地解决我国民用飞机研制领域航空电子产品设计研制标准短缺的问题提供了标准化研究的技术支撑.

  12. Conference Proceedings on High Altitude and High Acceleration Protection for Military Aircrew Held in Pensacola Florida on 29-30 April 1991 (Les Equipements de Protection pour le Vol Haute Altitude et Grande Acceleration a Bord des Avions Militaires)

    Science.gov (United States)

    1991-10-01

    fait apparatitre la faible d~pendance de r~coulement par rapport aux deux directions transversales. 11 parait donc naturel de rechercher une...par la seule composante axiale fz qui est naturellement une donn6e du probI~me. L’action du coeur est prise en compte i ’aide de conditions aux...C02) ------- Masque par spectrom6trie de masse - - - D t -------------------------- -- Capteur de pressto -- intrathoracique El ectro-cardiogramme

  13. Advanced Computer Aids in the Planning and Execution of Air Warfare and Ground Strike Operations: Conference Proceedings, Meeting of the Avionics Panels of AGARD (51st) Held in Kongsberg, Norway on 12-16 May 1986

    Science.gov (United States)

    1986-02-01

    l’Intelllgence Artificial- Is. La planification des missions. Is gestion des ressources sont des domaines on ces techniques sont naturellement ... naturel analyst, la phrase entrie 1 ]’side d’un arbre syntaxique pour en diduire la r~ponse A fournir ou l’action A effectuer. 11 er: capable d’un certain...par Jifflrents capteurs de renseignements. VIGEX dispose an entrie de pluslaurs types d’information4 - des observations incomplites at de qualitl

  14. Advanced Aircraft Interfaces: The Machine Side of the Man-Machine Interface (Les Interfaces sur les Avions de Pointe: L’Aspect Machine de l’Interface Homme-Machine)

    Science.gov (United States)

    1992-10-01

    binoculaire en oeuvre d’une conduite de tir et I la naturelle . comprdhension de la situation tactique. L’imagerie infrarouge met en oeuvre tin capteur ... naturel (utilisant la pente et la route), fondd sur DASSAULT AVIATION ont LtW charg~es d’dtablir la liaison avec le monde ext~rieur. les premilbres bases... naturel ’ dont t~smoigne Ce mouvement s’est fait grace A un triple cette d~marche va dans Ia ligne de conduite progr~s technologique :pr6nde par I’approche

  15. Formulation d'un modele mathematique par des techniques d'estimation de parametres a partir de donnees de vol pour l'helicoptere Bell 427 et l'avion F/A-18 servant a la recherches en aeroservoelasticite

    Science.gov (United States)

    Nadeau-Beaulieu, Michel

    In this thesis, three mathematical models are built from flight test data for different aircraft design applications: a ground dynamics model for the Bell 427 helicopter, a prediction model for the rotor and engine parameters for the same helicopter type and a simulation model for the aeroelastic deflections of the F/A-18. In the ground dynamics application, the model structure is derived from physics where the normal force between the helicopter and the ground is modelled as a vertical spring and the frictional force is modelled with static and dynamic friction coefficients. The ground dynamics model coefficients are optimized to ensure that the model matches the landing data within the FAA (Federal Aviation Administration) tolerance bands for a level D flight simulator. In the rotor and engine application, rotors torques (main and tail), the engine torque and main rotor speed are estimated using a state-space model. The model inputs are nonlinear terms derived from the pilot control inputs and the helicopter states. The model parameters are identified using the subspace method and are further optimised with the Levenberg-Marquardt minimisation algorithm. The model built with the subspace method provides an excellent estimate of the outputs within the FAA tolerance bands. The F/A-18 aeroelastic state-space model is built from flight test. The research concerning this model is divided in two parts. Firstly, the deflection of a given structural surface on the aircraft following a differential ailerons control input is represented by a Multiple Inputs Single Outputs linear model whose inputs are the ailerons positions and the structural surfaces deflections. Secondly, a single state-space model is used to represent the deflection of the aircraft wings and trailing edge flaps following any control input. In this case the model is made non-linear by multiplying model inputs into higher order terms and using these terms as the inputs of the state-space equations. In both cases, the identification method is the subspace method. Most fit coefficients between the estimated and the measured signals are above 73% and most correlation coefficient are higher than 90%.

  16. 基于仿真组件模型(SCM)的航空电子组件仿真模型研究%Research on Avionic Component Simulation Model Based on SCM

    Institute of Scientific and Technical Information of China (English)

    陈静杰; 郜丽娜; 耿宏

    2016-01-01

    在飞机维修仿真中,针对航空电子组件仿真模型不统一、重用性差的问题,提出基于SCM (simulation component model)的规范化建模方法建立组件模型.采用SCM规范定义模型框架后,依据航空电子组件在维修过程中的特性和功能,将组件的输入信号归纳为开关量输入、功能信号输入、故障信号输入和拆装信号输入四类,输出信号定义为功能信号输出和驱动信号输出两类,然后进一步界定了模型输入信号、控制信号和输出信号之间的运算规则,以满足组件操作、测试、拆装、排故等维修行为.最后,以飞行增稳计算机组件为例,在自制的飞机维护训练器上实现其模型化表达,仿真结果表明该方法可行.

  17. 基于模型驱动的航电系统安全性分析技术研究%Research on Model Based Safety Analysis Technology for Avionics System

    Institute of Scientific and Technical Information of China (English)

    谷青范; 王国庆; 张丽花; 翟鸣

    2015-01-01

    针对综合化航空电子系统安全性分析存在的失效模式完备性和动态失效问题以及数据一致性问题,将航电系统分为3个层次:应用操作层、功能层和资源层,采用形式化方法分别对每个层次进行建模,利用模型转换技术实现3个层次之间的语义转换,确保语义的一致性.利用Event-B语言对系统应用操作和功能层建模,实现对应用操作模式完备性的检查,利用AltaRica语言能够对系统的异常行为建模,实现对系统动态失效问题的分析.以飞机自动飞行控制系统为例,利用Event-B建模工具Rodin实现对应用操作模式的分析,借助基于AltaRica语言的SimFia工具对其安全性进行分析,结果验证了所提方法的有效性和实用性.

  18. A Survey of Serious Aircraft Accidents Involving Fatigue Fracture. Volume 2. Rotary-Wing Aircraft (Etude sur des Accidents Importants d’Avions du aux Effets des Fractures de Fatigue. Volume 2. Effets sur des Helicopteres).

    Science.gov (United States)

    1983-04-01

    Cal. USA. 12B Tail rotor drive shaft assembly (centering pin of cardan joint). NTSB file 3-2188. P11 Bell 25 Jun 68 0 S Boron, Cal. USA. 47G-3B-1 Tail...Canada. UH-12E Tail rotor pinion gear. PIO Hiller 12B 27 May 68 0 S Arroyo Grande, Cal. USA. Tail rotor drive shaft assembly (centering pin of cardan

  19. Analytical Qualification of Aircraft Structures: Meeting of the Structures and Materials Panel of AGARD (70th) Held in Sorrento, Italy on 1-6 April 1990 (La Qualification Analytique des Structures d’Avion).

    Science.gov (United States)

    1991-04-01

    de CAO. Cet outil offre A la fois l’avantage d’une complete intiractivit6 et celul de la possibilit6 de ricupiration des "historiques" des conmmandes...la propagation des fissures en fatigue Rtant globalement mieux maltrisd que celul de leur initiation. (voir r~sf.4 et P1.9). Avec les mat~riaux

  20. System 2020 - Strategic Initiative

    Science.gov (United States)

    2010-08-26

    avionics ,   automotive   products,   and   financial   analysis   systems.   Organizations   in   these   sectors   report...series   of   Block   Upgrades   (major   aircraft   and   avionics   revisions),   software   and   avionics   (major...automation  mechanisms  may  be  employed,   ala  Microsoft’s   nightly   builds,   developer-­‐tester   buddy

  1. Data Acquistion Controllers and Computers that can Endure, Operate and Survive Cryogenic Temperatures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Current and future NASA exploration flight missions require Avionics systems, Computers, Controllers and Data processing units that are capable of enduring extreme...

  2. Improved Design of Radiation Hardened, Wide-Temperature Analog and Mixed-Signal Electronics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA space exploration projects require avionic systems, components, and controllers that are capable of operating in the extreme temperature and radiation...

  3. Operationally Responsive Spacecraft Subsystem Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Saber Astronautics proposes spacecraft subsystem control software which can autonomously reconfigure avionics for best performance during various mission conditions....

  4. Aging Methodologies and Prognostic Health Management for Electrolytic Capacitors

    Data.gov (United States)

    National Aeronautics and Space Administration — Understanding the ageing mechanisms of electronic components critical avionics systems such as the GPS and INAV are of critical importance. Electrolytic capacitors...

  5. Defense AT&L. March-April 2010

    Science.gov (United States)

    2010-04-01

    with Redstone Arsenal, Ala ., to discuss common avionics issues. 59 Defense AT&L: March-April 2010 program test issues will inform both the test...Wright-Patterson Air Force Base, Ohio, could easily collaborate with Redstone Arsenal, Ala ., to discuss common avionics issues if both were members of

  6. 77 FR 59146 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2012-09-26

    ... CONTACT: Christine Abraham, Aerospace Engineer, Electrical Systems and Avionics, ACE-119W, FAA, Wichita..., Aerospace Engineer, Electrical Systems and Avionics, ACE- 119W, FAA, Wichita Aircraft Certification Office... of the brushes in the air conditioning (A/C) motor. This proposed AD would require an inspection...

  7. 78 FR 9636 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-02-11

    ... CONTACT: Christine Abraham, Aerospace Engineer, Electrical Systems and Avionics Branch, ACE-119W, FAA..., Aerospace Engineer, Electrical Systems and Avionics Branch, ACE-119W, FAA, Wichita Aircraft Certification.../C) compressor motors are installed and to determine the accumulated hours on certain A/C drive...

  8. 78 FR 32349 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-05-30

    ... Abraham, Aerospace Engineer, Electrical Systems and Avionics Branch, ACE-119W, FAA, Wichita Aircraft... this AD, contact Christine Abraham, Aerospace Engineer, Electrical Systems and Avionics Branch, ACE...) motor. This AD requires inspecting to determine if certain A/C compressor motors are installed and...

  9. Software Assurance Curriculum Project Volume 3: Master of Software Assurance Course Syllabi

    Science.gov (United States)

    2011-07-01

    Discuss what it means to have “software-defined” products, such as aircraft avionics, and businesses, such as banking or online retailing. • Discuss...the consequences of exploitations and failures for various systems, such as banking , power generation, telecommunications, aircraft avionics...products/ea/ • Artisan Studio, Artisan Studio Uno, http://www.artisansoftwaretools.com/studiouno • IBM Rational Rhapsody Developer, http

  10. A History of U.S. Navy Airborne and Shipboard Periscope Detection Radar Design and Development

    Science.gov (United States)

    2014-01-01

    bil ity Fir e c on tro l ra da rs (e .g. , S PQ -9 , Ph ala nx ) Su rfa ce co mb ata nts De sig ne d f or A EW fir e c on tro l su pp or t, n...Systems,” Jane’s Avionics . http://www.janes.com/articles/Janes- Avionics /AN-APS-124-search-radar-United-States.html SHANNON UNCLASSIFIED UNCLASSIFIED...periscope detection radars. At NADC, he also served as the project engineer for the P-3C Update IV avionics program and the deputy block manager (Airborne

  11. Static Aeroelastic Effects on High Performance Aircraft

    Science.gov (United States)

    1987-06-01

    logiciel ELFINI (qui regroupe autour d’un noyau central d’analyse par Eliments Finis toutes les disci- plines du calcul des structures d’avions). Nous en...T 5-9 ou apparaisseflt. les conditions d’equi libres en avion souple -, et - ]expression des coefficients a~rodynamiques en avion souple 7C 5 __- -,)a...la pale eat encastr6e 5 son attache et chargge A son extrsmlt libre (figure 29). En nesurant 1 et f il eat possible de calculer El, en effet p13 P133E

  12. Defense Acquisitions: Assessments of Selected Major Weapon Programs

    Science.gov (United States)

    2006-03-01

    Common Name: C-130 AMPC -130 Avionics Modernization Program (C-130 AMP)The Air Force’s C-130 AMP standardizes the cockpit configurations and avionics for...GAO-06-391 Assessments of Selected Major Weapon Programs Common Name: C-130 AMPC -130 AMP Program Technology Maturity All of the C-130 AMP’s six...Selected Major Weapon Programs Common Name: C-5 AMPC -5 Avionics Modernization Program (C-5 AMP)The Air Force’s C-5 AMP is the first of two major upgrades

  13. Impact of the european emission trading scheme for the air transportation industry on the valuation of aircraft purchase rights; Impacto de la ley de comercio europeo de emisiones de CO{sub 2} para el sector del transporte aereo en la valoracion de los derechos de compra de aviones

    Energy Technology Data Exchange (ETDEWEB)

    Tarradellas-Espuny, J.; Salamero-Salas, A.; Martinez-Costa, C.

    2009-07-01

    The European Commission issued a legislative proposal in December 2006, suggesting a cap on CO{sub 2} emissions for all planes arriving or departing from EU airports, while allowing airlines to buy and sell pollution credits on the EU carbon market (Emission Trading Scheme, or ETS). In 2008 the new scheme got the final approval. Real options appear to be ab appropriate methodology to capture the extra value brought by the new legislation on new airplane purchase rights: The airline will surely have the purchase right to the new plane if the operation of the plane generates unused pollution credits that the airline can sell at a minimum price in the carbon market. This paper tries to determine if the impact of ETS in the valuation of aircraft purchase rights is significant enough in monetary terms to include the new legislation in a complex real-option model already proposed by the authors recently. The research concludes that even the impact of ETS justifies its inclusion in the model, the quality of the available sets of historical data still raises some questions. Particularly, the assumption of market efficiency for the Carbon Pool over the recent years needs to be treated with caution. (Author) 9 refs.

  14. Human Factors Analysis of Aircrew Operational Tasks in a Fixed-Wing Search and Rescue Aircraft Cargo Compartment (Analyse des facteurs humains lies aux taches operationnelles qui sont executees par les membres d’equipage dans la soute des avions de recherche et de sauvetage)

    Science.gov (United States)

    2011-05-01

    Defence, 2011 © Sa Majesté la Reine (en droit du Canada), telle que représentée par le ministre de la Défense nationale, 2011 DRDC Toronto TM...choisi des tâches dont l’exécution en vol nécessitait un espace critique ainsi que quatre types d’équipements pertinents pour les analyser, notamment... critique feraient l’objet d’une analyse quantitative, car ces tâches exigent un plus grand effort physique et un plus grand espace pour leur exécution

  15. Component-Based QoS-Driven Synthesis of High Assurance Embedded Software Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Software is an integral part of many complex embedded systems, such as avionics, scientific exploration, and on-board systems. However, poor software reliability is...

  16. High Spatial Resolution shape Sensing for Adaptive Aerospace Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — It is accepted that adaptive aerospace vehicles whose flight avionic systems are reconfigurable are needed to respond to changing flight parameters, vehicle system...

  17. Improved Design of Radiation Hardened, Wide-Temperature Analog and Mixed-Signal Electronics Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA space exploration missions require the electronics for avionic systems, components, and controllers that are capable of operating in the extreme temperature and...

  18. DIAGNOSTIC/PROGNOSTIC EXPERIMENTS FOR CAPACITOR DEGRADATION AND HEALTH MONITORING IN DC-DC CONVERTERS

    Data.gov (United States)

    National Aeronautics and Space Administration — Studying and analyzing the ageing mechanisms of electronic components avionics in systems such as the GPS and INAV are of critical importance. In DC-DC power...

  19. Physics Based Electrolytic Capacitor Degradation Models for Prognostic Studies under Thermal Overstress

    Data.gov (United States)

    National Aeronautics and Space Administration — Electrolytic capacitors are used in several applications rang- ing from power supplies on safety critical avionics equipment to power drivers for electro-mechanical...

  20. ADAPTIVE ASYNCHRONOUS SIMULATED AND METRICAL SOFTWARE PACKAGE IN AIRCRAFT

    Directory of Open Access Journals (Sweden)

    Mr. Vladimir A. Tikhomirov

    2016-09-01

    Full Text Available The article is devoted to the peculiarities and problems of development of applied measuring software packages at the stage of mass production for aircraft avionics testing and measuring.

  1. Aircraft Electronics Maintenance Training Simulator. Curriculum Outlines.

    Science.gov (United States)

    Blackhawk Technical Coll., Janesville, WI.

    Instructional materials are provided for nine courses in an aircraft electronics maintenance training program. Courses are as follows: aviation basic electricity, direct current and alternating current electronics, basic avionic installations, analog electronics, digital electronics, microcomputer electronics, radio communications, aircraft…

  2. A Class-Desk’s Guide to NAVAIR Management

    Science.gov (United States)

    1977-05-01

    for aircraft, NR missiles, and space avionics. The all inclusive term ,-overs communications, I??, tactical data processing, compuiters and software ...NATC evaluates a broad snectrum of aircraft characteristics, including flying qualities, control performance, installed enines , weapon systems

  3. Ada Linear-Algebra Program

    Science.gov (United States)

    Klumpp, A. R.; Lawson, C. L.

    1988-01-01

    Routines provided for common scalar, vector, matrix, and quaternion operations. Computer program extends Ada programming language to include linear-algebra capabilities similar to HAS/S programming language. Designed for such avionics applications as software for Space Station.

  4. Man's role in integrated control and information management systems

    Science.gov (United States)

    Nevins, J. L.; Johnson, I. S.

    1972-01-01

    Display control considerations associated with avionics techniques are discussed. General purpose displays and a prototype interactive display/command design featuring a pushplate CRT overlay for command input are considered.

  5. Bayesian Framework Approach for Prognostic Studies in Electrolytic Capacitor under Thermal Overstress Conditions

    Data.gov (United States)

    National Aeronautics and Space Administration — Electrolytic capacitors are used in several applications rang- ing from power supplies for safety critical avionics equipment to power drivers for electro-mechanical...

  6. COARSE: Convex Optimization based autonomous control for Asteroid Rendezvous and Sample Exploration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Sample return missions, by nature, require high levels of spacecraft autonomy. Developments in hardware avionics have led to more capable real-time onboard computing...

  7. Demonstration of 6DOF Arc-mim/mm Control in the FCT Using Proba-3 Metrology and Control System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Implement in FCT avionics and attitude control architecture and software that enables order of magnitude increase in control capability for next-generation formation...

  8. A Self-Regulating Freezable Heat Exchanger for Spacecraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A spacecraft thermal control system must keep the vehicle, avionics and atmosphere (if crewed) within a defined temperature range. Since water is non-toxic and good...

  9. Radiation Mitigation Methods for Reprogrammable FPGA Project

    Data.gov (United States)

    National Aeronautics and Space Administration — One of the needs of NASA is the development of avionic systems and components that have the capability to operate in extreme radiation and temperature environments...

  10. Recent Projects in the KSC Applied Physics Lab

    Science.gov (United States)

    Starr, Stanley

    2013-01-01

    Topics include: Shuttle heritage; ISRU /RESOLVE: a) Payload for Lunar Lander/Rover on Polar Areas of Moon. b) Avionics/Software. New Technologies for Exploration: a) Radiation Shielding work. b) Cooperative Tractor Beams.

  11. Analysis of Autopilot Behavior

    Science.gov (United States)

    Sherry, Lance; Polson, Peter; Feay, Mike; Palmer, Everett; Null, Cynthia H. (Technical Monitor)

    1998-01-01

    Aviation and cognitive science researchers have identified situations in which the pilot's expectations for behavior of autopilot avionics are not matched by the actual behavior of the avionics. These "automation surprises" have been attributed to differences between the pilot's model of the behavior of the avionics and the actual behavior encoded in the avionics software. A formal technique is described for the analysis and measurement of the behavior of the cruise pitch modes of a modern Autopilot. The analysis characterizes the behavior of the Autopilot as situation-action rules. The behavior of the cruise pitch mode logic for a contemporary modern Autopilot was found to include 177 rules, including Level Change (23), Vertical Speed (16), Altitude Capture (50), and Altitude Hold (88). These rules are determined based on the values of 62 inputs. Analysis of the rule-based model also shed light on the factors cited in the literature as contributors to "automation surprises."

  12. Towards Prognostics for Electronics Components

    Data.gov (United States)

    National Aeronautics and Space Administration — Electronics components have an increasingly critical role in avionics systems and in the development of future aircraft systems. Prognostics of such components is...

  13. United States Coast Guard 2010 Posture Statement: With 2011 Budget in Brief

    Science.gov (United States)

    2010-02-01

    sample of Coast Guard activities in response to the earthquake in Haiti. An HC-144A aircraft from Aviation Training Center Mobile, Ala ., launched to...HH-60 engine sustainment and avionics , wiring and sensor upgrades for eight aircraft; HC-130H avionics and sensor development and testing, and the...Training Center Mobile, Ala . and Air Station Miami, Fla. HC-144A MPA – Operating and maintenance funding and personnel for aircraft #12 and personnel

  14. An Assessment Tool of Performance Based Logistics Appropriateness

    Science.gov (United States)

    2012-03-01

    navigation and attack systems integrated into a digital avionics suite that increases mission effectiveness and reduces pilot workload...Precision Firing Rocket and Missile Systems in the Program Executive Office for Missiles & Space at Huntsville, Ala . It is hitting 99.98%, he said.” C-17...benchmark for partnering with industry and leverages that relationship to increase weapons system availability while reducing operating costs. C-130 Avionics

  15. Inspector General, Department of Defense, Semiannual Report to the Congress, April 1, 2010 - September 30, 2010

    Science.gov (United States)

    2010-10-01

    that from 2002 to 2006, NSD did not perform these tests on electronic components used in U.S. military avionic systems, navigation and positioning...alleged reprisal within the Department of the Navy. Other activities re- viewed included alleged reprisal against sources reporting avionics ...to security assistance processes. Report No. A-2010-0094- ALA Management and Use of Ground Combat System Training Aids, Devices, Simulators, and

  16. 20th International Seapower Symposium

    Science.gov (United States)

    2013-01-01

    flaps, also critical parts, are made in Indonesia. The avionics are not specifically listed, but of course, we know that the “made in” label is not...completely true anyway; they contain components made from rare earths (all avionics do), which are virtually sole-sourced in China, which in turn is...activity, piracy amongst them. We all recognize, alas , that they engage in ever more savage, more violent actions and tremendous defiance to authority. We

  17. Air Force KC-X Tanker Aircraft Program: Background and Issues for Congress

    Science.gov (United States)

    2009-12-22

    Air Force is expected late next month.... Sen. Richard Shelby, R- Ala ., a Northrop supporter, and Rep. Norman Dicks, D-Wash., a Boeing supporter...from $2.1 billion per year to $3 billion per year by 2040 due to increasing depot maintenance and forecasted modernization programs in avionics and...China avionics access doors Source: Teal Group Note: Commercial variants of both aircraft types are powered by engines manufactured by either

  18. Semiannual Report to the Congress. April 1, 2010 - September 30, 2010

    Science.gov (United States)

    2010-01-01

    to 2006, NSD did not perform these tests on electronic components used in U.S. military avionic systems, navigation and positioning sys- tems...within the Department of the Navy. Other activities re- viewed included alleged reprisal against sources reporting avionics maintenance, emergency...assistance processes. Report No. A-2010-0094- ALA Management and Use of Ground Combat System Training Aids, Devices, Simulators, and Simulations

  19. Aircraft conceptual design modelling incorporating reliability and maintainability predictions

    OpenAIRE

    Vaziry-Zanjany , Mohammad Ali (F)

    1996-01-01

    A computer assisted conceptual aircraft design program has been developed (CACAD). It has an optimisation capability, with extensive break-down in maintenance costs. CACAD's aim is to optimise the size, and configurations of turbofan-powered transport aircraft. A methodology was developed to enhance the reliability of current aircraft systems, and was applied to avionics systems. R&M models of thermal management were developed and linked with avionics failure rate and its ma...

  20. Compilation of Abstracts of Dissertations, Theses, and Research Papers Submitted by Candidates for Degrees

    Science.gov (United States)

    1978-11-01

    Genovese , D. H., LT, An Economic Analysis of Life Cycle 34 Junior Grade, USN Military Manpower Maintenanceand Training Requirements in_ Avionics...Requirements in Avionics Minicomputer and Microcomputer Systems Dennis Harry Genovese Lieutenant, Junior Grade, United States Navy B.S., University of...121 A American Images of Arabs: A Data Based Analysis Eugene Michael Mensch Captain, United States Army B.A. Washburn University, 1968 This study

  1. Annotated Bibliography of Armed Services Vocational Aptitude Battery (ASVAB) Validity Studies

    Science.gov (United States)

    1990-02-01

    seem desirable. These standards follow a Congressional mandate setting a maximum of 25 percent category IV recruits for 1982 and 20 percent in futuro ...the Avionics Group (AV) and AE Class "A" school. (NPRDC LTR). San Diego, CA: Navy Personnel Research and Development Center. This "validation letter...34 provides validity information at subtest and composite levels for graduates, academic attritees and non-academic attritees for ten avionics training

  2. Invoking Subordinate Attitude Change through Counterattitudinal Advocacy: An Experiment in Persuasion.

    Science.gov (United States)

    1986-09-01

    Survey. The majority of the participants were assigned to avionics repair shops although there were participants from other areas as well (jet engine...attitude change, despite the salience of futuro argunents which might otherwise have impacted upon the subordinate. It therefore becomes the imperative...Tactical Fighter Wing’s Avionics Branch in December of 1983 and then served as Maintenance Supervisor of the 1st Component Repair Squadron from March 1985

  3. Proceedings of the ECOM Hybrid Microcircuit Symposium, 1976

    Science.gov (United States)

    1976-06-01

    For Low Cost Avionics W. W. Staley , Westinghouse Electric Corporation 372 SDI Modules J. Fishel, Circuit Technology Inc. 385 Hybrid Thick Film...or Gerber plotters. i Drawings, when required, are usually generated from the circuit layout. They may be used as assembly aids or inspection guides...TCVCXO-I (left) and TCVCXO-II. <A <•SA 4 . .4’.374 SEM/HYBRIDS, PARTN1.RS FOR LOW COST AVIONICS W. W. Staley Systems Development Division

  4. Modélisation, vieillissement et surveillance de l'état de santé des condensateurs films utilisés dans des applications avioniques

    OpenAIRE

    Makdessi, Maawad

    2014-01-01

    Nowadays, aeronautic research field is moving towards a more electric aircraft. Although this evolutionary path offers many advantages from a financial and ecological point of view, the increased power source usage sets additional constraints on the different electrical systems used onboard. Currently, passive components occupy 75% of the overall electronic equipments used in avionics, whose 50% corresponds to capacitors. Consequently, these latter must be able to withstand the harsh avionic ...

  5. Requirements analysis notebook for the flight data systems definition in the Real-Time Systems Engineering Laboratory (RSEL)

    Science.gov (United States)

    Wray, Richard B.

    1991-01-01

    A hybrid requirements analysis methodology was developed, based on the practices actually used in developing a Space Generic Open Avionics Architecture. During the development of this avionics architecture, a method of analysis able to effectively define the requirements for this space avionics architecture was developed. In this methodology, external interfaces and relationships are defined, a static analysis resulting in a static avionics model was developed, operating concepts for simulating the requirements were put together, and a dynamic analysis of the execution needs for the dynamic model operation was planned. The systems engineering approach was used to perform a top down modified structured analysis of a generic space avionics system and to convert actual program results into generic requirements. CASE tools were used to model the analyzed system and automatically generate specifications describing the model's requirements. Lessons learned in the use of CASE tools, the architecture, and the design of the Space Generic Avionics model were established, and a methodology notebook was prepared for NASA. The weaknesses of standard real-time methodologies for practicing systems engineering, such as Structured Analysis and Object Oriented Analysis, were identified.

  6. Information report presented in application of article 145 of the regulation by the commission of national defense and armed forces about the propulsion system of the second aircraft carrier; Rapport d'information depose en application de l'article 145 du reglement par la commission de la defense nationale et des forces armees sur le mode de propulsion du second porte-avions

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-11-01

    In the framework of the project of launching of a sister-ship to the Charles de Gaulle aircraft carrier, this report makes an objective analysis of the different possible propulsion systems that can be considered for this battle ship according to different criteria: 1 - two possible energy sources and four possible configurations of aircraft carrier considered: alternative between nuclear propulsion and conventional propulsion, the two nuclear ships eventualities, the hypothesis of an entirely French-made classical propulsion ship, the opportunity of a French-British cooperation for a conventional aircraft carrier project; 2 - decision criteria: operational need, cost, industrial and technological stakes, constraints linked with daily ship and crew life; 3 - propulsion systems alternative: conventional propulsion and reinforcement of the European defense policy, nuclear propulsion for an operational superiority and for a complementarity with the Charles de Gaulle. (J.S.)

  7. Open-Loop HIRF Experiments Performed on a Fault Tolerant Flight Control Computer

    Science.gov (United States)

    Koppen, Daniel M.

    1997-01-01

    During the third quarter of 1996, the Closed-Loop Systems Laboratory was established at the NASA Langley Research Center (LaRC) to study the effects of High Intensity Radiated Fields on complex avionic systems and control system components. This new facility provided a link and expanded upon the existing capabilities of the High Intensity Radiated Fields Laboratory at LaRC that were constructed and certified during 1995-96. The scope of the Closed-Loop Systems Laboratory is to place highly integrated avionics instrumentation into a high intensity radiated field environment, interface the avionics to a real-time flight simulation that incorporates aircraft dynamics, engines, sensors, actuators and atmospheric turbulence, and collect, analyze, and model aircraft performance. This paper describes the layout and functionality of the Closed-Loop Systems Laboratory, and the open-loop calibration experiments that led up to the commencement of closed-loop real-time flight experiments.

  8. Orion FSW V and V and Kedalion Engineering Lab Insight

    Science.gov (United States)

    Mangieri, Mark L.

    2010-01-01

    NASA, along with its prime Orion contractor and its subcontractor s are adapting an avionics system paradigm borrowed from the manned commercial aircraft industry for use in manned space flight systems. Integrated Modular Avionics (IMA) techniques have been proven as a robust avionics solution for manned commercial aircraft (B737/777/787, MD 10/90). This presentation will outline current approaches to adapt IMA, along with its heritage FSW V&V paradigms, into NASA's manned space flight program for Orion. NASA's Kedalion engineering analysis lab is on the forefront of validating many of these contemporary IMA based techniques. Kedalion has already validated many of the proposed Orion FSW V&V paradigms using Orion's precursory Flight Test Article (FTA) Pad Abort 1 (PA-1) program. The Kedalion lab will evolve its architectures, tools, and techniques in parallel with the evolving Orion program.

  9. Design and simulation of a smart optically controlled high-power switch based on a Si/SiC hybrid device structure

    Science.gov (United States)

    Bhadri, Prashant; Sukumaran, Deepti; Dasgupta, Samhita; Beyette, Fred R., Jr.

    2001-11-01

    In avionic systems, data integrity and high data rates are necessary for stable flight control. Unfortunately, conventional electronic control systems are susceptible to electromagnetic interference (EMI) that can reduce the clarity of flight control signals. Fly-by-Light systems that use optical signals to actuate the flight control surfaces of an aircraft have been suggested as a solution to the EMI problem in avionic systems. Fly-by-Light in avionic systems reduces electromagnetic interference hence improving the clarity of the control signals. A hybrid approach combining a silicon photoreceiver module with a SiC power transistor is proposed. The resulting device uses a 5 mW optical control signal to produce a 150 A current suitable for driving an electric motor.

  10. Design of a smart optically controlled high-power switch for fly-by-light motor actuation systems

    Science.gov (United States)

    Bhadri, Prashant; Sukumaran, Deepti; Dasgupta, Samhita; Beyette, Fred R., Jr.

    2001-12-01

    In avionic systems, data integrity and high data rates are necessary for stable flight control. Unfortunately, conventional electronic control systems are susceptible to electromagnetic interference (EMI) that can reduce the clarity of flight control signals. Fly-by-Light systems that use optical signals to actuate the flight control surfaces of an aircraft have been suggested as a solution to the EMI problem in avionic systems. Fly-by-Light in avionic systems reduces electromagnetic interference hence improving the clarity of the control signals. A hybrid approach combining a silicon photoreceiver module with a SiC power transistor is proposed. The resulting device uses a 5 mW optical control signal to produce a 150 A current suitable for driving an electric motor.

  11. Savremeno naoružanje i vojna oprema za broj 4/2013

    Directory of Open Access Journals (Sweden)

    Mladen R. Tišma

    2013-12-01

    Full Text Available Višenamenski borbeni avion MiG-29M/M2 preimenovan u MiG-35/D; Tekstron razvija laki jurišnik i izviđač; Boing i Saab o mogućnosti da ponude Gripen na konkursu T-X za novi avion za obuku američkog ratnog vazduhoplovstva; Predstavljena trenažna verzija ruskog borbenog helikoptera Mi-28; Nemački Evrofajteri dobijaju sposobnost za lovačko-bombarderska dejstva tek 2017. godine; Prikazan prototip S-350 Vitjaz, novog ruskog raketnog sistema za protivvazduhoplovnu odbranu; Poljskom RV-u isporučeni prvi modernizovani lovci MiG-29; Počela proizvodnja argentinskih školsko-borbenih aviona IA-63 Pampa III; Kineska borbena bespilotna letelica spremna za letna opitivanja; Helikopter Mi-8MSB oborio visinski rekord; Turski školski avion HÜRKUŞ izveo prvi let.

  12. Una etnografía del avión. Cuerpos sujetos a la disciplina del consumo viajero

    Directory of Open Access Journals (Sweden)

    José-Luis Anta Félez

    2013-09-01

    Full Text Available Partiendo de la base de que los aviones son lugares privilegiados para observar la realidad social, dado que es un espacio y tiempo acotado, se establece cuáles son los mecanismos que llevan a los individuos desde una corporalidad dada a la conversión en sujetos viajeros identificados, a su vez, como consumidores. Lo que ocurre en torno a los aviones, tanto dentro, como en los aeropuertos es una clara ruptura con la idea de experiencia, ante todo del volar y, sobre todo, del viajar, para acercarse a la creación, a cambio, de un mundo de sujetos individuales y disciplinados. Este trabajo establece que el tipo de movilidad que representan los aviones es una narrativa que identifica el mundo del capitalismo avanzado en el que vivimos hoy, donde la tecnología es definitivamente un todo empresarial, social y comercial.

  13. A Comparison of Bus Architectures for Safety-Critical Embedded Systems

    Science.gov (United States)

    Rushby, John; Miner, Paul S. (Technical Monitor)

    2003-01-01

    We describe and compare the architectures of four fault-tolerant, safety-critical buses with a view to deducing principles common to all of them, the main differences in their design choices, and the tradeoffs made. Two of the buses come from an avionics heritage, and two from automobiles, though all four strive for similar levels of reliability and assurance. The avionics buses considered are the Honeywell SAFEbus (the backplane data bus used in the Boeing 777 Airplane Information Management System) and the NASA SPIDER (an architecture being developed as a demonstrator for certification under the new DO-254 guidelines); the automobile buses considered are the TTTech Time-Triggered Architecture (TTA), recently adopted by Audi for automobile applications, and by Honeywell for avionics and aircraft control functions, and FlexRay, which is being developed by a consortium of BMW, DaimlerChrysler, Motorola, and Philips.

  14. Software Security Knowledge: CWE. Knowing What Could Make Software Vulnerable to Attack

    Science.gov (United States)

    2011-05-01

    II;’;’~.::.~:IIIIUOOS / (;I.O)’f’m!)ll 77 I npi/cwe.rnolle.OIQ SV.CODE_INJECTION.SHEll_ EXEC ’-’II~l’lff"O)::J"/ I" 1/ ala /definitions O’I?’-𔃽...control system1 etc. I Systems Real-time, Embedded Device, Programmable logic controller, implanted medica l devices/ Embedded Systems avionics ...Aerospace systems (such as safety-critica I ground aviation systems1 on-boa rd avionics , Transportation etc), shipping systems, rail systems, etc

  15. Defense AT&L. May-June 2010

    Science.gov (United States)

    2010-06-01

    change of station move to the Air Force Logistics Management Agency at Gunter Air Force Base, Ala . As I researched AFLMA, I found its mission was to...with multiple users based on technology, manu- facturer, or function? This is already being done in the areas of common avionics and weapons, but I...metal 41 Defense AT&L: May-June 2010 type modifications work out just fine. That is not to say that an avionics or more complex modification is out

  16. Effective electromagnetic shielding in multilayer printed circuit boards

    Science.gov (United States)

    Wiles, K. G.; Moe, J. L.

    Multilayer printed circuit boards have proven to be recurrent abettors of electromagnetic coupling problems created by the incessantly faster response times in integrated circuit technologies. Coupling within multilayer boards has not only inhibited meeting certain EMI requirements but has also precipitated 'self-inflicted' malfunctions commonly experienced during development of avionic systems. A recent avionic system, interfacing two asynchronous processors through a fourteen-layer motherboard, permitted coupling through ground plane connector apertures of sufficient amplitude and duration as to cause unintentional intercommunication and system malfunctions. The coupling mechanism and ground plane modifications which reduced this coupling by 40 dB and eliminated the incompatibility are discussed in this paper

  17. Reliability and quality EEE parts issues

    Science.gov (United States)

    Barney, Dan; Feigenbaum, Irwin

    1990-01-01

    NASA policy and procedures are established which govern the selection, testing, and application of electrical, electronic, and electromechanical (EEE) parts. Recent advances in the state-of-the-art of electronic parts and associated technologies can significantly impact the electronic designs and reliability of NASA space transportation avionics. Significant issues that result from these advances are examined, including: recent advances in microelectronics technology (as applied to or considered for use in NASA projects); electron packaging technology advances (concurrent with, and as a result of, the development of the advanced microelectronic devices); availability of parts used in space avionics; and standardization and integration of parts activities between projects, centers, and contractors.

  18. Space shuttle main engine hardware simulation

    Science.gov (United States)

    Vick, H. G.; Hampton, P. W.

    1985-01-01

    The Huntsville Simulation Laboratory (HSL) provides a simulation facility to test and verify the space shuttle main engine (SSME) avionics and software system using a maximum complement of flight type hardware. The HSL permits evaluations and analyses of the SSME avionics hardware, software, control system, and mathematical models. The laboratory has performed a wide spectrum of tests and verified operational procedures to ensure system component compatibility under all operating conditions. It is a test bed for integration of hardware/software/hydraulics. The HSL is and has been an invaluable tool in the design and development of the SSME.

  19. Aircraft Corrosion

    Science.gov (United States)

    1981-08-01

    qualitd fail-safe de is structure ont Etd vdrifides au cours de l’essai de is cellule de fatigue de cat avion : en effet , une crique, initide sur is...pout subir I& structure de 1’avion hormis lea effets micaniques bien que ces derniers interfirent avec lea agents physico-chlmlques. * G~~ali~e. La...iprouvettes (cylindriques ou iquorres) ont iti solliclties en flexion par llinterrnidiaire d’un bras do levier . Le schima do I& planche 7 donne le

  20. Requirements-Based Conformance Testing of ARINC 653 Real-Time Operating Systems

    Science.gov (United States)

    Maksimov, Andrey

    2010-08-01

    Requirements-based testing is emphasized in avionics certification documents because this strategy has been found to be the most effective at revealing errors. This paper describes the unified requirements-based approach to the creation of conformance test suites for mission-critical systems. The approach uses formal machine-readable specifications of requirements and finite state machine model for test sequences generation on-the-fly. The paper also presents the test system for automated test generation for ARINC 653 services built on this approach. Possible application of the presented approach to various areas of avionics embedded systems testing is discussed.

  1. An Ada Linear-Algebra Software Package Modeled After HAL/S

    Science.gov (United States)

    Klumpp, Allan R.; Lawson, Charles L.

    1990-01-01

    New avionics software written more easily. Software package extends Ada programming language to include linear-algebra capabilities similar to those of HAL/S programming language. Designed for such avionics applications as Space Station flight software. In addition to built-in functions of HAL/S, package incorporates quaternion functions used in Space Shuttle and Galileo projects and routines from LINPAK solving systems of equations involving general square matrices. Contains two generic programs: one for floating-point computations and one for integer computations. Written on IBM/AT personal computer running under PC DOS, v.3.1.

  2. Man-Machine Interface in Tactical Aircraft Design and Combat Automation (Conference Proceedings Held in Stuttgart (Germany, F.R.) on 28 September-1 October 1987)

    Science.gov (United States)

    1988-07-01

    en place de toutes ces assistances entratne une refonte complte de Ia conduite de la machine dans le but (id6al) de r6aliser une cabine libre de...l’organisation de ma cabine: - Automatisation trds pouss~e do la gastion de l’avion at des systdris par des logiciels "experts" capables d’eft’actuar...concernent la sdcsrit6 de l’avion. Cest pourquei ha fisbilitd de ces logiciels doit atre compatible avec l’importance des tiches k qui lesr sont

  3. Aircraft Assessment and Acceptance Testing.

    Science.gov (United States)

    1980-05-01

    enregiatr~a sur l’enregistreur d’accident. Seula, donc, queiques paratrea compldmentairea aeront n~ces- saires. Pour celar le problise des capteurs ...France, le problime principal mar lea avions de sdie rdside dazas l’instalhation de capteurs et de lair ciblage vera l’acquiaition de donnies. D’un...traitfis dans le can des vols de riception. 4o2.2. 118 Concorde Pour cet avian quit naturellement , 6tait le premier avion supersonique de trans- port

  4. Autonomous Flight Rules Concept: User Implementation Costs and Strategies

    Science.gov (United States)

    Cotton, William B.; Hilb, Robert

    2014-01-01

    The costs to implement Autonomous Flight Rules (AFR) were examined for estimates in acquisition, installation, training and operations. The user categories were airlines, fractional operators, general aviation and unmanned aircraft systems. Transition strategies to minimize costs while maximizing operational benefits were also analyzed. The primary cost category was found to be the avionics acquisition. Cost ranges for AFR equipment were given to reflect the uncertainty of the certification level for the equipment and the extent of existing compatible avionics in the aircraft to be modified.

  5. F-35 Force Development Evaluation and Weapons School Beddown Environmental Impact Statement

    Science.gov (United States)

    2011-05-01

    aviones F-35 se instalarían de forma permanente y por etapas entre los años 2009 y 2028. La Fuerza Aérea considerará la información en la EIS para... cambios de personal, que resultan en una ligera reducción del personal total en la base, ocurrirían del FY 2009 al FY 2028. Propósito y necesidad de...desarrolla o perfecciona procedimientos operativos y programas de entrenamiento; ♦ evalúa los cambios a los aviones y verifica la corrección de nuevas

  6. Delivering Combat Capability at Home and Abroad

    Science.gov (United States)

    2004-09-01

    Major Command MDP Milestone Decision Point MLU Mid-Life Update MS Milestone MSIP Multi-Stage Improvement Program MY Milestone Year NMS National Military...USAF A model. The aircraft then began to evolve, proceeding through USAF F-15 Multistage Improvement Program ( MSIP ), which led in the mid-1980s to the F...avionics enhancements. ■ IOC 1979. F-15 Worldwide Fleet USAF F-15C/D MSIP ■ 180 built. ■ Avionics update. ■ Deliveries started June 1985. USAF F-15E

  7. On Board Data Acquisition System with Intelligent Transducers for Unmanned Aerial Vehicles

    Science.gov (United States)

    Rochala, Zdzisław

    2012-02-01

    This report presents conclusions from research project no. ON50900363 conducted at the Mechatronics Department, Military University of Technology in the years 2007-2010. As the main object of the study involved the preparation of a concept and the implementation of an avionics data acquisition system intended for research during flight of unmanned aerial vehicles of the mini class, this article presents a design of an avionics system and describes equipment solutions of a distributed measurement system intended for data acquisition consisting of intelligent transducers. The data collected during a flight controlled by an operator confirmed proper operation of the individual components of the data acquisition system.

  8. Applications of Miniaturized Atomic Magnetic Sensors in Military Systems

    Science.gov (United States)

    2012-10-01

    exercising flight operations ( brushless DC motor running, tail avionics actuated, telemetry systems transmitting). We utilized a simple linear model to...80021 USA ABSTRACT A new generation of miniaturized ultra-high sensitivity atomic magnetometers is being developed and integrated into military...low frequency magnetometry are investigated through preliminary experimental data in addition to modeling and simulations. In particular, we discuss

  9. RoHS/Pb-free Electronics for DoD?: Managing the Pb-free Electronics Transition

    Science.gov (United States)

    2010-06-14

    GEIA = Government Electronics & Information Technology Association AMC = Avionics Maintenance Conference Pb-free Electronics Risk Management PERM... AlA EMC PERM Consortium Management PERM International Beneficiaries ............... ?.~~~-~·i...elected) - AlA Liaison/Executive Secretary -DoD LSA4 for Soldering Technologies -Executive Committee Ex-Chair Task Team Leads International Advisory

  10. Russian Nuclear Weapons: Past, Present, and Future

    Science.gov (United States)

    2011-11-01

    and SLBM forces, which must be re- placed as a matter of urgency. Instead, Russia has con- centrated on upgrading the electronics and avionics of...Ivanov’s meeting of U.S. Secretary of Defense Donald Rumsfeld in August 2006 in Alas - ka. Responding to Rumsfeld’s attempt to explain the benefits of

  11. MIT Lincoln Laboratory Annual Report 2013

    Science.gov (United States)

    2013-01-01

    defense tests ever conducted. Activities in Lexington, Mass.; Huntsville, Ala .; and the Reagan Test Site (RTS) at Kwajalein spanned the entire test...architecture paradigms for sensors, avionics payloads, unmanned system ground control stations, and future common ground systems for data exploitation

  12. Integrating the Unmanned Aircraft System into the National Airspace System

    Science.gov (United States)

    2011-06-18

    and the ground control system. The ground control system is comprised of several integrated components to include: avionics , fuel, navigation...accessed January 15, 2011). U.S. Army Unmanned Aircraft Systems Roadmap 2010-2035: Eyes of the Army. Fort Rucker, Ala .: U.S. Army Unmanned Aircraft

  13. Deployed Flight Test of the Iraqi Air Force Comp Air 7SLX (CA-7)

    Science.gov (United States)

    2014-02-28

    airframe, performance, flying qualities, and avionics . The program was highly visible, drawing the interest of the commander of AFMC, 3 General Bruce...Air Force Historical Research Agency, Maxwell Air Force Base, Ala . (hereafter AFHRA). 2 Brfg (U), “Coordination/Approval Briefing for the Limited

  14. Practical Applications of Fracture Mechanics in Aircraft and Aerospace Structural Problems (Applications Pratiques des Mecanismes de Fracture au Niveau des Problemes Structuraux dans l’Aviation et l’Aerospatial),

    Science.gov (United States)

    1982-06-01

    programmes d’ordinateur, CRACKS-IV et FLAGRO 4, utilis~s pour ranalyse de croissance des fissurations sur des structures a~ro- spaciales et d’avions...2 2.3 Lower Threshold Limit ................................................ 3 2.4 Crack Growth Retardation ...6 3.4 Cracks from a Hole ................................................... 6 3.5 Retardation

  15. 75 FR 16902 - Aviation Rulemaking Advisory Committee; Transport Airplane and Engine Issue Area-New Task

    Science.gov (United States)

    2010-04-02

    ... working group will be expected to provide a report that addresses the following low speed alerting... working group will be also be expected to provide a report that addresses the following low speed alerting... the existing Avionics Systems Harmonization Working Group. The Task ARAC is initially tasked...

  16. Conference P.Aimedieu

    CERN Multimedia

    Aimedieu,P

    1988-01-01

    Le conférencier parle de la pollution, du trou d'ozone et cite entre autre l'histoire qui commence dans les années 1970 quand les préoccupations des scientifics se sont focalisées sur les pollutions possibles des avions supersonics dans la stratosphère

  17. A Review of European Arms Collaboration and Prospects for Its Expansion under the Independent European Program Group.

    Science.gov (United States)

    1987-07-01

    consisting of Domier and Siebel (FRG); Association Belge pour l’Avion Patrouilleur ( ABAP ), a Belgian group including Fairey, SABCA, and Fabrique...Agency DTIA (France) .,- ,- Industry [ r ut • ""[ SECBAT Technica Insta Financial Commercial . tlSeeflug ABAP .. Fairey Breguet SFebel Fke ’. S F

  18. Catalog of Wargaming and Military Simulation Models

    Science.gov (United States)

    1989-09-01

    Generic Missile Model . MODEL TYPE: Analysis. PROPONENT: WftDC, Avionics Laboratory...requirements. Users: Primarily WRDC/AAWA. Comments: N/A. G-4 TITLE: GFGMMLCM - GEneric Missile Model with Tracking Loops and Counter-Measure SMODEI TYPE...Structure Trade-Off Analysis Model ............ F-31 G2WS - G2 Workstation ................. ..................... C-I GEUI - Generic Missile Model ................................

  19. 76 FR 18024 - Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440...

    Science.gov (United States)

    2011-04-01

    ...., Washington, DC. FOR FURTHER INFORMATION CONTACT: Wing Chan, Aerospace Engineer, Avionics and Flight Test... states: At present, the Wing Anti-Ice System (WAIS) sufficient heat switches/sensors on CL-600-2B19..., certain WAIS mode selection changes may result in a two-minute inhibition of the wing anti-ice message,...

  20. 75 FR 25788 - Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440...

    Science.gov (United States)

    2010-05-10

    ... receipt. FOR FURTHER INFORMATION CONTACT: Wing Chan, Aerospace Engineer, Avionics and Flight Test Branch... unsafe condition for the specified products. The MCAI states: At present, the Wing Anti-Ice System (WAIS... activation of the low- heat detection switches, certain WAIS mode selection changes may result in a...

  1. Radiations cosmiques : danger dans l'Espace

    Science.gov (United States)

    Bonnet-Bidaud, J. M.; Dzitko, H.

    2000-06-01

    Au sol, l'atmosphere nous protege plus ou moins bien. Mais dans l'espace ou a bord des avions de ligne, l'homme est directement expose aux rayonnements cosmiques qui peuvent etre mortels. Un veritable frein a la presence humaine prolongee dans l'espace. Une menace que les agences spatiales prennent tres au serieux.

  2. Hangar con alas, Los Angeles

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1961-04-01

    Full Text Available Formando parte de su programa, la TWA ha construido recientemente un hangar para servicio y reparaciones de su flota aérea de naves ordinarias y de aviones de reacción en el aeropuerto internacional de Los Angeles (Estados Unidos. El proyecto de esta obra se encargó a la empresa constructora Holmes & Narver, Inc.

  3. The Flight of Flexible Aircraft in Turbulence - State-of-the-Art in the Description and Modelling of Atmospheric Turbulence: Meeting of the Structures and Materials Panel of AGARD (64th) Held in Athens (Greece) on 28 September-3 October 1986

    Science.gov (United States)

    1987-12-01

    Flights. Le Groupe de I’AGARD charge de I’etude des Structures et des Materiaux etudie actuellement le vol des avions flexibles dans les turbulences...D.O.F. FORCED OSC. ANGULAR OSCILLATION TRANSL. OSCILLATION SINGLE D.O.F. FREE OSC. FREE FLIGHT SEMI-FREE CONTROLLED MAGNETIC SUSPENSION

  4. Research on 14 MeV Neutron Induced Single-event-effects in SRAMs

    Institute of Scientific and Technical Information of China (English)

    FAN; Hui; GUO; Gang; SHEN; Dong-jun; LIU; Jian-cheng

    2013-01-01

    High energy neutrons are produced in nuclear cascade showers created by nuclear spallation reactions between cosmic rays(mainly protons)and atmospheric nuclei(nitrogen and oxygen).Atmospheric neutrons have been identified as the main cause of single-event-effects(SEE)at elevated altitudes.Avionics are vulnerable to atmospheric neutrons,which can easily produce SEE in

  5. Regulatory Compliance in Multi-Tier Supplier Networks

    Science.gov (United States)

    Goossen, Emray R.; Buster, Duke A.

    2014-01-01

    Over the years, avionics systems have increased in complexity to the point where 1st tier suppliers to an aircraft OEM find it financially beneficial to outsource designs of subsystems to 2nd tier and at times to 3rd tier suppliers. Combined with challenging schedule and budgetary pressures, the environment in which safety-critical systems are being developed introduces new hurdles for regulatory agencies and industry. This new environment of both complex systems and tiered development has raised concerns in the ability of the designers to ensure safety considerations are fully addressed throughout the tier levels. This has also raised questions about the sufficiency of current regulatory guidance to ensure: proper flow down of safety awareness, avionics application understanding at the lower tiers, OEM and 1st tier oversight practices, and capabilities of lower tier suppliers. Therefore, NASA established a research project to address Regulatory Compliance in a Multi-tier Supplier Network. This research was divided into three major study efforts: 1. Describe Modern Multi-tier Avionics Development 2. Identify Current Issues in Achieving Safety and Regulatory Compliance 3. Short-term/Long-term Recommendations Toward Higher Assurance Confidence This report presents our findings of the risks, weaknesses, and our recommendations. It also includes a collection of industry-identified risks, an assessment of guideline weaknesses related to multi-tier development of complex avionics systems, and a postulation of potential modifications to guidelines to close the identified risks and weaknesses.

  6. Nonequilibrium Superconductivity in Optically Illuminated Tunnel Junctions.

    Science.gov (United States)

    1980-08-01

    of the microcomputer. These errors have been measured using a dummy sample and are in agreement with the manufacturer’s specifications, namely, 0.1...32806 Air Forre Avionics Laboratory Navy Underwar Sond Laboratory Air Force Systcems Cmnd Technical Library Technical Librtary Fort Trmbull Wiqht-Psteron Air Porte Base Wse London, Connecticut 06320 DaytOn. Ohio 45433

  7. 76 FR 54095 - Pilot in Command Proficiency Check and Other Changes to the Pilot and Pilot School Certification...

    Science.gov (United States)

    2011-08-31

    ... these proposals are appropriate given the technological advancements in aircraft avionics. The remaining... since commercial pilots may encounter complex aircraft in their career. One commenter suggested that a... country. Finally, one organization expressed concern that there would be lack of oversight of the...

  8. A Stellar Reference Unit Design Study for SIRTF

    DEFF Research Database (Denmark)

    Jørgensen, John Leif; Liebe, Carl Christian

    1996-01-01

    A design study for a stellar reference unit, or star tracker, for SIRTF was conducted in FY96 in conjunction with the Tracking Sensors Group of the Avionic Equipment Section of JPL. The resulting design was derived from the Oersted, autonomous, Advanced Stellar Compass, star tracker. The projected...

  9. Cognitive adaptive man machine interfaces for the firefighter commander: design framework and research methodology

    NARCIS (Netherlands)

    Graaf, de Maurits; Varkevisser, Michel; Kempen, Masja; Jourden, Nicolas; Schmorrow, Dylan D.; Fidopiastis, Cali M.

    2011-01-01

    The ARTEMIS CAMMI project aims at developing a joint-cognitive system to optimise human operator’s performance under demanding labour conditions. The CAMMI domain applications concern avionics, automotive, and civil emergencies. In this paper we address the development of a joint cognitive system fo

  10. Ascending Thermal Localization and Its Strongest Zone Centering by Artificial Neural Networks

    Directory of Open Access Journals (Sweden)

    Ivan Suzdalev

    2011-04-01

    Full Text Available Thermal localization and their strongest zone centering by artificial neural networks (ANN, and it are used by the automatic or semiautomatic control system of unmanned aerial vehicles (UAV. Artificial neural network take input data from aircraft avionics. Actual thermal model of space and its value’s correlation with other factors are researched as well. Article in Lithuanian

  11. The influence of no fault found in analogue CMOS circuits

    NARCIS (Netherlands)

    Wan, Jinbo; Kerkhoff, Hans G.

    2014-01-01

    The most difficult fault category in electronic systems is the “No Fault Found” (NFF). It is considered to be the most costly fault category in, for instance, avionics. The relatively few papers in this area rarely deal with analogue integrated systems. In this paper a simple simulation model has be

  12. Handbook of RF, Microwave, and Millimeter-Wave Components. Edited by Leonid A. Belov, Sergey M. Smolskiy and Victor N. Kochemasov, Artech House, 2012; 504 pages. Price: £119.00, ISBN 978-1-60807-209-5

    Directory of Open Access Journals (Sweden)

    Shu-Kun Lin

    2013-01-01

    Full Text Available This unique and comprehensive resource offers you a detailed treatment of the operations principles, key parameters, and specific characteristics of active and passive RF, microwave, and millimeter-wave components. The book covers both linear and nonlinear components that are used in a wide range of application areas, from communications and information sciences, to avionics, space, and military engineering.

  13. Electronics system design techniques for safety critical applications

    CERN Document Server

    Sterpone, Luca

    2008-01-01

    Addresses the development of techniques for the evaluation and the hardening of designs implemented on SRAM-based Field Programmable Gate Arrays. This title presents a design methodology solving industrial designer''s needs for implementing electronic systems using SRAM-based FPGAs in critical environments, like the space or avionic ones.

  14. Development of the sandra antenna for airborne satellite communication

    NARCIS (Netherlands)

    Verpoorte, J.; Schippers, H.; Jorna, P.; Hulzinga, A.; Roeloffzen, C.G.H.; Marpaung, D.A.I.; Sanadgol, B.; Baggen, R.; Wang, Qin; Noharet, B.; Beeker, W.; Leinse, A.; Heideman, R.G.

    2011-01-01

    Novel avionics communication systems are required for increasing flight safety and operational integrity, for optimizing economy of operations and for enhancing passenger services. One of the key technologies to be developed is an antenna system that will provide broadband connectivity within aircra

  15. Halon Extinguisher Agent Behavior in a Ventilated Small Aircraft.

    Science.gov (United States)

    1986-06-01

    Training & Standard National Forest Products Assoc. Western Airlines 50 North Franklin Turnpike 6060 Avion Drive P.O. Box 314 Los Angeles, California...P.O. Box 51009 Mail Stop #10 1151 Boston-Providence T’Pke Tulsa, Oklahoma 74151 Norwood, Mass. 02062 Mrs. Charlotte Gebhart Dr. Rosalind C. Anderson

  16. Sherlock: A Coached Practice Environment for an Electronics Troubleshooting Job.

    Science.gov (United States)

    Lesgold, Alan; And Others

    "Sherlock" is a computer-based, supported practice environment for a complex troubleshooting job in Air Force electronics. The program was developed to raise the level of troubleshooting knowledge of avionics technicians. This describes the training problem for which Sherlock was developed, the principles behind its development, and its…

  17. Making statistical inferences about software reliability

    Science.gov (United States)

    Miller, Douglas R.

    1988-01-01

    Failure times of software undergoing random debugging can be modelled as order statistics of independent but nonidentically distributed exponential random variables. Using this model inferences can be made about current reliability and, if debugging continues, future reliability. This model also shows the difficulty inherent in statistical verification of very highly reliable software such as that used by digital avionics in commercial aircraft.

  18. Using Expert Systems For Computational Tasks

    Science.gov (United States)

    Duke, Eugene L.; Regenie, Victoria A.; Brazee, Marylouise; Brumbaugh, Randal W.

    1990-01-01

    Transformation technique enables inefficient expert systems to run in real time. Paper suggests use of knowledge compiler to transform knowledge base and inference mechanism of expert-system computer program into conventional computer program. Main benefit, faster execution and reduced processing demands. In avionic systems, transformation reduces need for special-purpose computers.

  19. Proceedings of the 12th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting

    Science.gov (United States)

    Wardrip, S. C. (Editor)

    1981-01-01

    The meeting gave PTTI managers, systems engineers, and program planners a transparent view of the state-of-the-art, an opportunity to express needs, a view of important future trends, and a review of relevant past accomplishments. The PTTI users were provided with new and useful applications, procedures, and techniques. Emphasis is placed on military applications and avionics.

  20. AGARD Flight Test Techniques Series. Volume 5. Store Separation Flight Testing

    Science.gov (United States)

    1986-04-01

    Tomes) T 1 Le reacteur T 2 Le turbopropulseur Installation des turbomoteurs sur helicopteres Apercu sur les pneumatiques et leurs proprietes...L’atterrissage et le probleme du freinage Manuel de medicine aeronautique Conditions de calcul des structures d’avions Technologie helicoptere Tl

  1. Effect of Accessory Power Take-off Variation on a Turbofan Engine Performance

    Science.gov (United States)

    2012-09-26

    three forms: - Electric (avionics, lights, instruments, entertainment). - Hydraulics (primary and secondary flight controls, landing gears, brakes ...steering, doors, and other actuation functions). - Bleed air or pneumatics ( environmental control system (ECS), cabin pressurization, engine cowl...shown that bleed air from engine is an adequate control method that meets mass flow requirements over an extended time for the pneumatic forebody

  2. Detection of intermittent resistive faults in electronic systems based on the mixed-signal boundary-scan standard

    NARCIS (Netherlands)

    Kerkhoff, Hans G.; Ebrahimi, Hassan

    2015-01-01

    In avionics, like glide computers, the problem of No Faults Found (NFF) is a very serious and extremely costly affair. The rare occurrences and short bursts of these faults are the most difficult ones to detect and diagnose in the testing arena. Several techniques are now being developed in ICs by u

  3. Intermittent resistive faults in digital cmos circuits

    NARCIS (Netherlands)

    Kerkhoff, Hans G.; Ebrahimi, H.

    2015-01-01

    A major threat in extremely dependable high-end process node integrated systems in e.g. Avionics are no failures found (NFF). One category of NFFs is the intermittent resistive fault, often originating from bad (e.g. Via or TSV-based) interconnections. This paper will show the impact of these faults

  4. 76 FR 17364 - Airworthiness Directives; Dassault-Aviation Model FALCON 7X Airplanes

    Science.gov (United States)

    2011-03-29

    ... certain abnormal conditions while the avionic system switches into landing mode during altitude cruise. * * * * * may cause the crew to be unaware of possible system failures that could require urgent crew's actions.... * * * * * may cause the crew to be unaware of possible system failures that could require urgent crew's...

  5. Defense Acquisitions: Assessments of Selected Weapon Programs

    Science.gov (United States)

    2013-03-01

    Radios, Joint Land Attack Cruise Missile Defense Elevated Netter Sensor System, C-130 Avionics Modernization Program, or National Polar-orbiting...investigation of hypoxia-like physiological symptoms experienced by some F- 22A pilots, an issue identified as being significant starting in 2008 and

  6. Multiple IMU system development, volume 1

    Science.gov (United States)

    Landey, M.; Mckern, R.

    1974-01-01

    A redundant gimballed inertial system is described. System requirements and mechanization methods are defined and hardware and software development is described. Failure detection and isolation algorithms are presented and technology achievements described. Application of the system as a test tool for shuttle avionics concepts is outlined.

  7. 77 FR 48058 - Special Conditions: Eurocopter France, EC130T2; Use of 30-Minute Power Rating

    Science.gov (United States)

    2012-08-13

    ... helicopter. This model helicopter will have the novel or unusual design feature of a 30-minute power rating... (VEMD) avionics, and an active vibration control system. Eurocopter France proposes that the EC130T2... EC130T2 model helicopter meets the applicable provisions of the regulations incorporated by reference...

  8. Validation of Flight Critical Control Systems

    Science.gov (United States)

    1991-12-01

    1985. [8] Avizienis, A., and Lyu, M., "On the Effectiveness of Multiversion Software in Digital Avionics", AIAA Computers in Aerospace VI Conference...Experimentation and Modelling. NASA CR-165036, 1982. [12] Eckhardt, D. E.; and Lee, L. D.: A Theoretical Basis for the Analysis of Multiversion

  9. Airplane Actuation Trade Study

    Science.gov (United States)

    1983-01-01

    the electrical subsystem it is anticipated that 270 HVDC will not always be the most efficient power source. Lighting, instrumentation, avionics...sizing considerations all motor loads such as surface control actuators, fuel pumps, ECS fans and pumps, etc., are regarded as powered by 270 HVDC . All

  10. Effects of Low-Altitude Aircraft Overflights on Domestic Turkey Poults

    Science.gov (United States)

    1990-06-30

    Wright-Patterson AFB. Cottercau, P. (1972). "Les incidences du ’bang’ des avions supersoniques sur les productions et la vie animales ," Revue Medicine...as blue back art not second joint may be removed, if remov~ at the joint and b~th "etrited on breast and tegs of A quality birds. Not more thtan

  11. Search and Rescue Aircrewman/HH3F Flight Mechanic, 2-10. Military Curriculum Materials for Vocational and Technical Education.

    Science.gov (United States)

    Ohio State Univ., Columbus. National Center for Research in Vocational Education.

    This self-paced, individualized course, adapted from military curriculum materials for use in vocational and technical education, teaches students the skills needed to become a qualified avionics worker on the HH-3F helicopter. The course materials consist of three pamphlets: two student workbooks and a composite ground/flight syllabus. Each…

  12. 75 FR 47249 - Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440...

    Science.gov (United States)

    2010-08-05

    ... INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer, Avionics and Flight Test Branch, ANE-172, FAA, New... replacement of the harness assembly with tin-plated electrical wires, and the re-orientation of the ADG cannon... 44701: General requirements.'' Under that section, Congress charges the FAA with promoting safe...

  13. Falkland Islands - War For National Sovereignty

    Science.gov (United States)

    1985-05-01

    near futuro , further embroiling major powers and regional Third World nations and United Nations in complex questions of Self-determination. , In the...modern air delivery avionics and training methods have greatly improved the lethality of #conventional’ air ordnance." (63:35) If the number of unexploded

  14. CrossTalk: The Journal of Defense Software Engineering. Volume 13, Number 5, May 2000

    Science.gov (United States)

    2000-05-01

    to have a good understanding of what things are so sacro - sanct that they could not change—the degree of stealthiness; performance param- eters...low-risk avionics development approach blended with state-of-the- art software development tools and processes has proven successful. Boeing also is

  15. Power Extension Package (PEP) system definition extension, orbital service module systems analysis study. Volume 4: PEP functional specification

    Science.gov (United States)

    1979-01-01

    The functional, performance, design, and test requirements for the Orbiter power extension package and its associated ground support equipment are defined. Both government and nongovernment standards and specifications are cited for the following subsystems: electrical power, structural/mechanical, avionics, and thermal control. Quality control assurance provisions and preparation for delivery are also discussed.

  16. Evaluating real-time Java for mission-critical large-scale embedded systems

    Science.gov (United States)

    Sharp, D. C.; Pla, E.; Luecke, K. R.; Hassan, R. J.

    2003-01-01

    This paper describes benchmarking results on an RT JVM. This paper extends previously published results by including additional tests, by being run on a recently available pre-release version of the first commercially supported RTSJ implementation, and by assessing results based on our experience with avionics systems in other languages.

  17. Estrategias avanzadas de control, modelado, diseño e implementación de controladores de potencia de estado sólido (SSPC) para su aplicación en sistemas de distribución de potencia eléctrica embarcados

    OpenAIRE

    Izquierdo Gil, Daniel

    2010-01-01

    Actualmente, existe una fuerte tendencia en los nuevos diseños de aviones militares y civiles hacia el concepto de avión más eléctrico ó totalmente eléctrico. Esto es debido principalmente a la substitución de los sistemas mecánicos, neumáticos e hidráulicos por sistemas parcial o totalmente eléctricos. El concepto de avión más eléctrico presenta una serie de ventajas o mejoras frente a los aviones convencionales, desde el punto de vista de eficiencia, peso, volumen, impacto ambiental, etc. E...

  18. Synthesis from Design Requirements of a Hybrid System for Transport Aircraft Longitudinal Control. Volume 2

    Science.gov (United States)

    Hynes, Charles S.; Hardy, Gordon H.; Sherry, Lance

    2007-01-01

    Volume I of this report presents a new method for synthesizing hybrid systems directly from desi gn requirements, and applies the method to design of a hybrid system for longitudinal control of transport aircraft. The resulting system satisfies general requirement for safety and effectiveness specified a priori, enabling formal validation to be achieved. Volume II contains seven appendices intended to make the report accessible to readers with backgrounds in human factors, flight dynamics and control, and formal logic. Major design goals are (1) system design integrity based on proof of correctness at the design level, (2) significant simplification and cost reduction in system development and certification, and (3) improved operational efficiency, with significant alleviation of human-factors problems encountered by pilots in current transport aircraft. This report provides for the first time a firm technical basis for criteria governing design and certification of avionic systems for transport aircraft. It should be of primary interest to designers of next-generation avionic systems.

  19. Investigation of a Third Order Baro-Damped Vertical Channel of INS.

    Science.gov (United States)

    1982-12-01

    System Accuracy Approach, Technical Report AFAL-TR-79-1231, Avionics Laboratory, Wright-Patterson AFB, December 1979. 13. Musick , S.H. SOFE: A Generalized... Musick , S.H., Feldmann, R.E. and Jensen, J.G. SOFEPL: A Plotting Postprocessor for ISOFEe, Avionics Laboratory, Wright-Patterson AFB, November 1981...4.2-564I1~2i~3 I SU~i UT’.C EcGO( 4 TQAJtTPAJ.ril)) c C EPOT CC-PUTES N’Ct4ZEOO E103!ES FOV T94E 499 SUBBLOCK THAT C MARCES UP T-4E FU,.OA-4E%TAL %AV6

  20. Kedalion: NASA's Adaptable and Agile Hardware/Software Integration and Test Lab

    Science.gov (United States)

    Mangieri, Mark L.; Vice, Jason

    2011-01-01

    NASA fs Kedalion engineering analysis lab at Johnson Space Center is on the forefront of validating and using many contemporary avionics hardware/software development and integration techniques, which represent new paradigms to heritage NASA culture. Kedalion has validated many of the Orion hardware/software engineering techniques borrowed from the adjacent commercial aircraft avionics solution space, with the intention to build upon such techniques to better align with today fs aerospace market. Using agile techniques, commercial products, early rapid prototyping, in-house expertise and tools, and customer collaboration, Kedalion has demonstrated that cost effective contemporary paradigms hold the promise to serve future NASA endeavors within a diverse range of system domains. Kedalion provides a readily adaptable solution for medium/large scale integration projects. The Kedalion lab is currently serving as an in-line resource for the project and the Multipurpose Crew Vehicle (MPCV) program.

  1. Next Generation Reliable Transport Networks

    DEFF Research Database (Denmark)

    Zhang, Jiang

    of criticality and security, there are certain physical or logical segregation requirements between the avionic systems. Such segregations can be implemented on the proposed avionic networks with different hierarchies. In order to fulfill the segregation requirements, a tailored heuristic approach for solving......This thesis focuses the efforts on ensuring the reliability of transport networks and takes advantages and experiences from the transport networks into the networks for particular purposes. Firstly, the challenges of providing reliable multicast services on Multipath Label Switching......-Transport Profile (MPLS-TP) ring networks are addressed. Through the proposed protection structure and protection switching schemes, the recovery mechanism is enhanced in terms of recovery label consumption, operation simplicity and fine traffic engineering granularity. Furthermore, the extensions for existing...

  2. Communication Management Unit : Single Solution of Voice and Data Routing Unit

    Directory of Open Access Journals (Sweden)

    Ravi Shankar

    2013-03-01

    Full Text Available Challenges faced by present avionics systems are low weight, less power, low volume, high mean time between failure and low mean time to repair. This paper is a feasibility study for single solution of voice and data switching/routing unit. This paper presents a new architecture for voice and data switching unit in the form of communication management unit.  The proposed solution is obtained on integrated modular avionics architecture using commercial-off-the-shelf  hardware. A single board computer is used as a processing engine with add-on audio boards to convert analog voice input and output signals into digital signals.Defence Science Journal, 2013, 63(2, pp.181-185, DOI:http://dx.doi.org/10.14429/dsj.63.4261

  3. Aircraft electromagnetic compatibility

    Science.gov (United States)

    Clarke, Clifton A.; Larsen, William E.

    1987-06-01

    Illustrated are aircraft architecture, electromagnetic interference environments, electromagnetic compatibility protection techniques, program specifications, tasks, and verification and validation procedures. The environment of 400 Hz power, electrical transients, and radio frequency fields are portrayed and related to thresholds of avionics electronics. Five layers of protection for avionics are defined. Recognition is given to some present day electromagnetic compatibility weaknesses and issues which serve to reemphasize the importance of EMC verification of equipment and parts, and their ultimate EMC validation on the aircraft. Proven standards of grounding, bonding, shielding, wiring, and packaging are laid out to help provide a foundation for a comprehensive approach to successful future aircraft design and an understanding of cost effective EMC in an aircraft setting.

  4. Design and implementation of a GPS-aided inertial navigation system for a helicopter UAV

    Science.gov (United States)

    Kastelan, David R.

    Helicopter unmanned aerial vehicles (UAVs) benefit from vertical takeoff and landing, hover, low-speed, and cruising flight capabilities. This versatility has the expense of nonlinear, unstable, and underactuated system dynamics. These challenges and numerous potential applications make the helicopter UAV an interesting testbed for nonlinear control. A platform for such development has been established in the Applied Nonlinear Controls Lab (ANCL). A miniature helicopter was augmented with a manual/autonomous takeover system and the ANCL Avionics. This payload contains a global positioning system (GPS) receiver, inertial sensors, and communications and computing hardware. Allan variance analysis of inertial sensor data enabled the derivation of a GPS-aided inertial navigation system that was implemented on the ANCL Avionics. This extended Kalman filter (EKF)-based algorithm estimates vehicle position, velocity, and attitude necessary for system identification tasks and control system feedback. Performance validation of this algorithm was demonstrated in simulation and in experimental ground and flight tests.

  5. Optimisation 3D du nez d'un SuperSonic Business Jet basée sur l'adaptation de maillages. Application à la réduction du bang sonique

    OpenAIRE

    Alauzet, Frédéric; Mohammadi, Bijan

    2003-01-01

    Ce rapport traite d'un problème d'optimisation de forme 3D du nez d'un SuperSonic Business Jet (SSBJ) sous des contraintes aérodynamiques et accoustiques. La contrainte accoustique concerne la génération du bang sonique par l'avion. On présente une méthode d'optimisation de faible dimension pour analyser l'impact du nez sur ces contraintes. Plus précisément, après avoir paramétrisé le nez de l'avion, on échantillonne l'espace de contrôle, puis on construit la surface de réponse qui nous donne...

  6. Integrated cockpit design for the Army helicopter improvement program

    Science.gov (United States)

    Drennen, T.; Bowen, B.

    1984-01-01

    The main Army Helicopter Improvement Program (AHIP) mission is to navigate precisely, locate targets accurately, communicate their position to other battlefield elements, and to designate them for laser guided weapons. The onboard navigation and mast-mounted sight (MMS) avionics enable accurate tracking of current aircraft position and subsequent target location. The AHIP crewstation development was based on extensive mission/task analysis, function allocation, total system design, and test and verification. The avionics requirements to meet the mission was limited by the existing aircraft structural and performance characteristics and resultant space, weight, and power restrictions. These limitations and night operations requirement led to the use of night vision goggles. The combination of these requirements and limitations dictated an integrated control/display approach using multifunction displays and controls.

  7. Towards Prognostics for Electronics Components

    Science.gov (United States)

    Saha, Bhaskar; Celaya, Jose R.; Wysocki, Philip F.; Goebel, Kai F.

    2013-01-01

    Electronics components have an increasingly critical role in avionics systems and in the development of future aircraft systems. Prognostics of such components is becoming a very important research field as a result of the need to provide aircraft systems with system level health management information. This paper focuses on a prognostics application for electronics components within avionics systems, and in particular its application to an Isolated Gate Bipolar Transistor (IGBT). This application utilizes the remaining useful life prediction, accomplished by employing the particle filter framework, leveraging data from accelerated aging tests on IGBTs. These tests induced thermal-electrical overstresses by applying thermal cycling to the IGBT devices. In-situ state monitoring, including measurements of steady-state voltages and currents, electrical transients, and thermal transients are recorded and used as potential precursors of failure.

  8. Electronics Shielding and Reliability Design Tools

    Science.gov (United States)

    Wilson, John W.; ONeill, P. M.; Zang, Thomas A., Jr.; Pandolf, John E.; Koontz, Steven L.; Boeder, P.; Reddell, B.; Pankop, C.

    2006-01-01

    It is well known that electronics placement in large-scale human-rated systems provides opportunity to optimize electronics shielding through materials choice and geometric arrangement. For example, several hundred single event upsets (SEUs) occur within the Shuttle avionic computers during a typical mission. An order of magnitude larger SEU rate would occur without careful placement in the Shuttle design. These results used basic physics models (linear energy transfer (LET), track structure, Auger recombination) combined with limited SEU cross section measurements allowing accurate evaluation of target fragment contributions to Shuttle avionics memory upsets. Electronics shielding design on human-rated systems provides opportunity to minimize radiation impact on critical and non-critical electronic systems. Implementation of shielding design tools requires adequate methods for evaluation of design layouts, guiding qualification testing, and an adequate follow-up on final design evaluation including results from a systems/device testing program tailored to meet design requirements.

  9. HIL Tuning of UAV for Exploration of Risky Environments

    Directory of Open Access Journals (Sweden)

    C. D. Melita

    2008-11-01

    Full Text Available In this paper the latest results of an HIL architecture, optimized to develop and test UAV platforms are presented. This architecture has been used to realize the different devices involved in the navigation and stability control of the Volcan UAV, a plane designed to operate in volcanic environments. The proposed architecture is strongly modular and flexible and allows the development of avionic hardware and software, testing and tuning the involved algorithms with non-destructive trials. A flight simulator (X-Plane with a suitable plane model and plug-in, has been adopted to simulate the UAV dynamics. The flight simulator, interfaced with the real electronic boards, allows an easy tuning of all the control parameters and data collecting for test and validation. The effectiveness of adopted methodology was confirmed by several flight tests performed subsequently by using the designed avionic modules on the real UAV.

  10. Radiation Fields in High Energy Accelerators and their impact on Single Event Effects

    CERN Document Server

    García Alía, Rubén; Wrobel, Frédéric; Brugger, Markus

    Including calculation models and measurements for a variety of electronic components and their concerned radiation environments, this thesis describes the complex radiation field present in the surrounding of a high-energy hadron accelerator and assesses the risks related to it in terms of Single Event Effects (SEE). It is shown that this poses not only a serious threat to the respective operation of modern accelerators but also highlights the impact on other high-energy radiation environments such as those for ground and avionics applications. Different LHC-like radiation environments are described in terms of their hadron composition and energy spectra. They are compared with other environments relevant for electronic component operation such as the ground-level, avionics or proton belt. The main characteristic of the high-energy accelerator radiation field is its mixed nature, both in terms of hadron types and energy interval. The threat to electronics ranges from neutrons of thermal energies to GeV hadron...

  11. International Space Station Systems Engineering. Case Study

    Science.gov (United States)

    2010-01-01

    lack of system configuration.  Lithium thionyl chloride batteries were brought on board over the objection of other ISS partners.  Russian ground...meters (13.5 feet wide) at its widest point. It has an operational lifetime of at least 15 years. Its solar arrays and six nickel- cadmium batteries can...during periodic maintenance. The Equipment airlock has two racks, one for avionics, and the other for cabin air. Batteries , power tools and other

  12. Next Generation of Launcher & Space Vehicles Batteries

    Science.gov (United States)

    Laroye, J. F.; Brochard, P.; Grassien, J.-Y.; Masgrangeas, D.

    2008-09-01

    This paper presents several examples of Saft lithium batteries in use onboard launchers & space vehicles: ATV primary lithium manganese dioxide (LiMnO2) batteries and Rosetta primary lithium thionyl chloride (LiSOCl2) batteries as well as the VEGA rechargeable lithium-ion (Li-ion) avionics & thrust vector control (TVC) batteries.It gives an overview of possible chemistries and tradeoff to address these needs.

  13. At the Crossroads of Cyber Warfare: Signposts for the Royal Australian Air Force

    Science.gov (United States)

    2011-06-01

    M. Convertino, Lou Anne DeMattei, and Tammy M. Knierim, Flying and Fighting in Cyberspace, Maxwell Paper ; No. 40 (Maxwell Air Force Base, Ala .: Air...Communications technicians or avionic engineers with a one-month crash course on cyber will not magically become cyber warriors. It will take the training...Convertino, Sebastian M., Lou Anne DeMattei, and Tammy M. Knierim. Flying and Fighting in Cyberspace, Maxwell Paper ; No. 40. Maxwell Air Force Base, Ala

  14. Leadership in Crisis: Service Chiefs in the Post-Vietnam World

    Science.gov (United States)

    2012-06-01

    prototype in 1970, the USAF became concerned about cost overruns due to the increasing cost of the aircraft’s avionics , radar, and countermeasures.124...Maxwell Air Force Base, Ala .: Air UP., 2006), 130. 124 McLucas, Benson, Reflections of a Technocrat, 131. 125 McLucas, Benson, Reflections of a...J., and Lawrence R. Benson. Reflections of a Technocrat: Managing Defense, Air, and Space Programs During the Cold War. Maxwell Air Force Base, Ala

  15. The U.S. Combat and Tactical Wheeled Vehicle Fleets: Issues and Suggestions for Congress

    Science.gov (United States)

    2011-01-01

    lim- iting technical risk are threefold. First, vetronics, the ground vehicle equivalent of avionics , provides a data bus and data bus standards that...Anywhere!” Huntsville, Ala ., August 19, 2010b. These generators are integrated into the vehicle transmission. 9 “DRS and Allison Transmission Announce...Activity, Huntsville, Ala ., June 15, 2010; John Matsumura, Ran- dall Steeb, John Gordon IV, Thomas J. Herbert, Russell W. Glenn, and Paul Steinberg

  16. Check Six: Take a Look Back (Again) to Ensure Future Fighter Success

    Science.gov (United States)

    2011-04-13

    I1.. .... ,; ........................... : .. 29 . Appendix B: USAF Analysis of AlA results of the Vietnam Conflict...replications to Marine aircrews with the obsolete F-5E/N Tiger II. Despite flying aging airframes with outdated avionics and weapons Campbell 1...the conflict. As a result, Navy and Marine aircrews flew fewer AlA missions than the Air Force due to their hodgepodge of aircraft, which included

  17. Military display performance parameters

    Science.gov (United States)

    Desjardins, Daniel D.; Meyer, Frederick

    2012-06-01

    The military display market is analyzed in terms of four of its segments: avionics, vetronics, dismounted soldier, and command and control. Requirements are summarized for a number of technology-driving parameters, to include luminance, night vision imaging system compatibility, gray levels, resolution, dimming range, viewing angle, video capability, altitude, temperature, shock and vibration, etc., for direct-view and virtual-view displays in cockpits and crew stations. Technical specifications are discussed for selected programs.

  18. Ada as a Hardware Description Language: An Initial Report

    Science.gov (United States)

    2014-02-25

    by Martin Marietta Corporution ind in part by the Defense Advanced Research Projects Agency (DOD). DARPA Order iu. 3597, iu:4io,ed by the Air Force...Avionics Laboratory under Contract F3361531 .1(1539, and DARIPA Order -1 on, n tored by the Office of Naval Research , under Contract ;.MDA 903-81 -C0411...Discussions about programming styles often degenerate into theological arguments (witness the long standing arguments about indentation and capitalization

  19. Contribution à l'analyse des systèmes pilotés par calculateurs : extraction de scénarios redoutés et vérification de contraintes temporelles

    OpenAIRE

    Medjoudj, Malika

    2006-01-01

    The progressive integration of electronics in the car and avionics fields has lead to improvements in both functions and services. However, this has caused an increased complexity in the design of these systems, typically involving computers (e.g. mecatronic systems, flight computers, etc.), which makes the control of their reliability difficult. In addition, the phase of design must be fast and inexpensive (i.e. less prototypes and at later stages) with a level of guaranteed safety. In more ...

  20. Guidance-Control-Navigation Automation for Night All-Weather Tactical Operations Held at Hague (Netherlands) on 21-24 May 1985.

    Science.gov (United States)

    1985-11-01

    by J F Fisher, Marketing Executive, and G R Sleight, Airborne Display Divisional Manager GEC Avionics, Rochester, Kent, ME1 2XX, UK SUMMARY Cirrent...lterrtain.Th I-, tipo inI the, djirt .:tl ti:ttt 1inrovtios :itt iicitla ,vIi text and graphict; which fitrtlt’r Ltt Wiahi LI I’ ’.1 111I:I I a lts l

  1. Nanotechnology in Aerospace Applications

    Science.gov (United States)

    2007-03-01

    UV laser, field emission device, chemical sensorZinc Oxide Transparent conductive film in display electrodes, solar cells , organic light emitting...physical, chemical, bio…) • Nanoelectromechanical systems • Batteries, fuel cells , power systems • Thermal barrier and wear-resistant coatings • Avionics...SWCNT dispersions--Nice dispersion of CNT in DMF 2. Device fabrication--(see the interdigitated electrodes below) 3. SWCNT deposition—Casting, or in

  2. Interfacing with an EVA Suit

    Science.gov (United States)

    Ross, Amy

    2011-01-01

    A NASA spacesuit under the EVA Technology Domain consists of a suit system; a PLSS; and a Power, Avionics, and Software (PAS) system. Ross described the basic functions, components, and interfaces of the PLSS, which consists of oxygen, ventilation, and thermal control subsystems; electronics; and interfaces. Design challenges were reviewed from a packaging perspective. Ross also discussed the development of the PLSS over the last two decades.

  3. Multipurpose UAV for search and rescue operations in mountain avalanche events

    OpenAIRE

    Tonoli, Andrea; Silvagni, Mario; Chiaberge, Marcello; Zenerino, Enrico Cesare

    2016-01-01

    This paper presents a multipurpose UAV (unmanned aerial vehicle) for mountain rescue operations. The multi-rotors based flying platform and its embedded avionics are designed to meet environmental requirements for mountainous terrain such as low temperatures, high altitude and strong winds, assuring the capability of carrying different payloads (separately or together) such as: avalanche beacon (ARTVA) with automatic signal recognition and path following algorithms for the rapid location of s...

  4. Electronics and computer acronyms

    CERN Document Server

    Brown, Phil

    1988-01-01

    Electronics and Computer Acronyms presents a list of almost 2,500 acronyms related to electronics and computers. The material for this book is drawn from a number of subject areas, including electrical, electronics, computers, telecommunications, fiber optics, microcomputers/microprocessors, audio, video, and information technology. The acronyms also encompass avionics, military, data processing, instrumentation, units, measurement, standards, services, organizations, associations, and companies. This dictionary offers a comprehensive and broad view of electronics and all that is associated wi

  5. Horizontal Two Phase Flow Regime Identification: Comparison of Pressure Signature, Electrical Capacitance Tomography (ECT) and High Speed Visualization (Postprint)

    Science.gov (United States)

    2012-11-01

    cooling techniques for computers, home/automotive air conditioning systems, avionics, industrial transport, and nuclear reactors 1-3 . Various flow...in microchannel arrays with a hydraulic diameter of 0.6 mm using deionized water. Comparisons between experimental data and published correlations...investigated the unsteady behavior of pressure signals in single microchannel flow of n-pentane. Their research revealed pressure fluctuations from 20 to

  6. Design Requirements for Weaponizing Man-Portable UAS in Support of Counter-Sniper Operations

    Science.gov (United States)

    2011-09-01

    I Construction I System Retirement and Material Recycling /Disposal I • Construction, test , and verif ication of system I • System retirement and...27). The camera was rather easily integrated into the Raven avionics and GCS video and was bore sighted so that a cross- hair on the operator’s HUD...can be seen departing the barrel. The small cross- hair in the center of the screen is where the paintball actually struck the HMWWV. Wind gusts

  7. Histoire de faire l'amour

    Institute of Scientific and Technical Information of China (English)

    杜青钢

    2004-01-01

    A L'UNIVERSITE, je retenais par coeur le verbe aimer, mais je connaissais real l'amour quand il suivait le verbe faire. Les autres étudiants l'ignoraient encore bien plus que moi. Nous avions beau consulter le dictionnaire bilingue, l'expression n'y figurait pas. Notre ignorance persistait.C'était la fin des armées 1970, la Chine venait de s'ouvrir à l'étranger.

  8. Recent Advances in Long Range and Long Endurance Operation of Aircraft (Les Progres Recents dans le Domaine des Operations Aeriennes a Longue Distance et de Longdue Duree)

    Science.gov (United States)

    1993-11-01

    L’Avolution technologique des moteura montrent Cependant. du c6tAE du construcceur lea actions que I’on pout eapirer une riduction importante du entreprises ... finances au niveau international), mais aussi des utilisateurs commerciaux potentiels d’une flotte d’avions ------- porte-conteneurs". Cette flotte serait...required in the early - Same fleet size and container days of introduction to service, at a volume with reduced flight times time when finances are

  9. Modelling of Molecular Structures and Properties. Proceedings of the International Meeting of Physical Chemistry on Modeling of Molecular Structures and Properties in Physical Chemistry and Biophysics Organized by the Division de Chimie Physique of the Societe Francaise de Chimie Held in Nancy, France on 11-15 September 1989

    Science.gov (United States)

    1990-01-01

    et financier de nombreux organismes et entreprises auxquels va notre recon- naissance: en premier lieu l’Universit6 de Nancy I et la Municipalit6 de...physical signals in order to interpret them. Typical examples are diagnosis (in medicine, industry, finance and banking, etc.) and signal and image...at various stages of development (first demonstrators, prototypes, operational products) : agriculture, avionics and space, bank, finance and

  10. Industrial communication technology handbook

    CERN Document Server

    Zurawski, Richard

    2014-01-01

    Featuring contributions from major technology vendors, industry consortia, and government and private research establishments, the Industrial Communication Technology Handbook, Second Edition provides comprehensive and authoritative coverage of wire- and wireless-based specialized communication networks used in plant and factory automation, automotive applications, avionics, building automation, energy and power systems, train applications, and more.New to the Second Edition:46 brand-new chapters and 21 substantially revised chaptersInclusion of the latest, most significant developments in spe

  11. Technology research for digital flight control

    Science.gov (United States)

    Carestia, R. A.

    1983-01-01

    The use of advanced digital systems for flight control and guidance for a specific mission is investigated. The research areas include advanced electronic system architectures, tests with the global positioning system (GPS) in a helicopter, and advanced integrated systems concept for rotorcraft. Emphasis is on a search and rescue mission, differential global positioning systems to provide a data base of performance information for navigation, and a study to determine the present usage and trends of microcomputers and microcomputer components in the avionics industries.

  12. Improvements Needed in the Defense Logistics Agencys Evaluation of Fair and Reasonable Prices for C130 Aircraft Spare Parts (Redacted)

    Science.gov (United States)

    2015-11-16

    of Defense that supports the warfighter; promotes accountability , integrity, and efficiency; advises the Secretary of Defense and Congress; and...years. The legacy C-130H was replaced with the C-130J model, which has significant advances in avionics and performance. According to the DLA...indefinite-quantity, indefinite-delivery contract is firm-fixed price with an estimated base-period value of $60.2 million. The contract’s total

  13. Space Shuttle Usage of z/OS

    Science.gov (United States)

    Green, Jan

    2009-01-01

    This viewgraph presentation gives a detailed description of the avionics associated with the Space Shuttle's data processing system and its usage of z/OS. The contents include: 1) Mission, Products, and Customers; 2) Facility Overview; 3) Shuttle Data Processing System; 4) Languages and Compilers; 5) Application Tools; 6) Shuttle Flight Software Simulator; 7) Software Development and Build Tools; and 8) Fun Facts and Acronyms.

  14. The Use of Modeling for Flight Software Engineering on SMAP

    Science.gov (United States)

    Murray, Alexander; Jones, Chris G.; Reder, Leonard; Cheng, Shang-Wen

    2011-01-01

    The Soil Moisture Active Passive (SMAP) mission proposes to deploy an Earth-orbiting satellite with the goal of obtaining global maps of soil moisture content at regular intervals. Launch is currently planned in 2014. The spacecraft bus would be built at the Jet Propulsion Laboratory (JPL), incorporating both new avionics as well as hardware and software heritage from other JPL projects. [4] provides a comprehensive overview of the proposed mission

  15. Man-Machine Interface Design for Modeling and Simulation Software

    Directory of Open Access Journals (Sweden)

    Arnstein J. Borstad

    1986-07-01

    Full Text Available Computer aided design (CAD systems, or more generally interactive software, are today being developed for various application areas like VLSI-design, mechanical structure design, avionics design, cartographic design, architectual design, office automation, publishing, etc. Such tools are becoming more and more important in order to be productive and to be able to design quality products. One important part of CAD-software development is the man-machine interface (MMI design.

  16. Border Integrity Capability: Enhancements of Multi-jurisdictional Situation Awareness on Lake Ontario during the G20

    Science.gov (United States)

    2011-06-01

    d’avions volant à basse altitude. L’étude pilote s’est avérée beaucoup plus exhaustive après que le gouvernement canadien eut décidé de tenir le Sommet...l’intégrité des frontières. Notons que les gouvernements municipaux, provinciaux et fédéral ont exprimé, d’une seule voix, qu’ils souhaitaient continuer

  17. Experimental Investigation of the Interaction of Moisture, Low Temperature, and Low Level Impact on Graphite/Epoxy Composites-II.

    Science.gov (United States)

    1982-10-01

    was not wedged open (COD = 0.006 in.) was sealed s with wax. Water was then injected with an hypodermic needle into the cracks of the two specimens and...30 Sensors & Avionics Technology Directorate 40 Communication & Navigation Technology Directorate *50 Software Computer Directorate 60 Aircraft & Crew...ordinates must increase by four percent. S2. The geometry is well within the realm of linear small deflection theory , and the crack expanded four percent by

  18. The Changing Demographics of the Black American Male Population in 2010 and its Impact on the United States Army Officer Corps

    Science.gov (United States)

    1991-06-07

    1990), 77. 31.The New Republic, 6. 32.John Naismith and Patricia Aburdene, MEGATMDS 2000 (New York: Avion, 1990), 1. 33.E. James Mason, "Mentoring: Its...the Armed Forces," (Research Study, Industrial College of the Armed Forces, 1986), 17-18. 40.Moskos, 72. 41.DCSPER, briefing. 42. James E. Mason...Captain James Harris, action officer Combined Arms Training and Integration Directorate; and Captain Herbert Hodges, acLion officer Combined Arn-s

  19. Operational Roles, Aircrew Systems and Human Factors in Future High Performance Aircraft

    Science.gov (United States)

    1980-03-01

    des expsriences des conflits pricdente. 11 cat apparu en particulier quo lea avions d’attaaue au aol leo plus officaces dtalent caux qui evaiont one...donnies. Ces dchanges sont gfr~s par un caiculateur principal qui est double, pour une fonction de gestion , d’une unit secondaire de gestion . Outre le...calculateur principal et lIunitE secondaire de gestion , les Equipements suivants sont relies aux DIGIBUS: centrale a~rodynamique, centrale i inertie, poste

  20. Department of Defense Provisioning and Other Preprocurement Screening Manual

    Science.gov (United States)

    1983-11-01

    u 8 SS ai 0 a x it - a2 x mi IM 0S 43 RO CH 2 DuD 43SN,!- 3.30.4 O"W U.. Imt S.: MOB Rule Data Fixed Length Record Format - Card 1.. POSITION DATA...HELIC, "-F (H53) ’XH SH-60B Helicopter Avionics "CJ RECONNAISSANCE AIRCRAFT (RA-SC/AS) GJ O-2A Aircraft UJ Target Control System Change Kits Vi Swimmer