WorldWideScience

Sample records for airplane runway image

  1. Runways

    Data.gov (United States)

    Department of Homeland Security — The Airport Runways database is a geographic dataset of runways in the United States and US territories containing information on the physical characteristics of the...

  2. Aircraft performance in slippery runway conditions : a simulation study of the accuracy and limitations of real-time runway friction estimation based on airplane onboard data.

    Science.gov (United States)

    2015-04-01

    Runway overrun accidents occurring during landings in slippery conditions continue to occur frequently worldwide. After a : number of specific landing overrun accidents in the U.S., the National Transportation Safety Board (NTSB) issued a safety : re...

  3. Image mosaicking from aerial unmanned airplane

    Science.gov (United States)

    Wang, Tao; Gong, Jianhua

    2008-10-01

    In this article, the SIFT method is employed to combine a lot of images together from aerial unmanned airplane, without any control points. And the image number of this method is smaller than that of the triangulation. SIFT feature, which has shown great success in computer vision, is introduced into image registration in remote sensing. We extract distinctive invariant features from images that can be used to perform reliable matching between different views of an object or scene. The features are invariant to image scale and rotation, they are well localized in both the spatial and frequency domains, reducing the probability of disruption by occlusion, clutter, or noise.

  4. Tire-to-Surface Friction-Coefficient Measurements with a C-123B Airplane on Various Runway Surfaces

    Science.gov (United States)

    Sawyer, Richard H.; Kolnick, Joseph J.

    1959-01-01

    An investigation was conducted to obtain information on the tire-to-surface friction coefficients available in aircraft braking during the landing run. The tests were made with a C-123B airplane on both wet and dry concrete and bituminous pavements and on snow-covered and ice surfaces at speeds from 12 to 115 knots. Measurements were made of the maximum (incipient skidding) friction coefficient, the full-skidding (locked wheel) friction coefficient, and the wheel slip ratio during braking.

  5. Runway safety

    Science.gov (United States)

    2010-02-12

    Information provided through analysis of runway incursions is useful in many ways. Analysis of the errors made by pilots, controllers, and vehicle drivers is the first step toward developing error mitigation strategies. Furthermore, successful design...

  6. PROBABILISTIC MODEL FOR AIRPORT RUNWAY SAFETY AREAS

    Directory of Open Access Journals (Sweden)

    Stanislav SZABO

    2017-06-01

    Full Text Available The Laboratory of Aviation Safety and Security at CTU in Prague has recently started a project aimed at runway protection zones. The probability of exceeding by a certain distance from the runway in common incident/accident scenarios (take-off/landing overrun/veer-off, landing undershoot is being identified relative to the runway for any airport. As a result, the size and position of safety areas around runways are defined for the chosen probability. The basis for probability calculation is a probabilistic model using statistics from more than 1400 real-world cases where jet airplanes have been involved over the last few decades. Other scientific studies have contributed to understanding the issue and supported the model’s application to different conditions.

  7. Runways (National) - National Geospatial Data Asset (NGDA) Runways

    Data.gov (United States)

    Department of Transportation — The Airport Runways database (NTAD) is a geographic dataset of runways in the United States and US territories containing information on the physical characteristics...

  8. Runway incursion severity risk analysis.

    Science.gov (United States)

    2012-09-14

    Runway incursions are defined as the unauthorized presence of a vehicle, pedestrian, or aircraft on a runway. Identifying situations or conditions in which runway incursions are more likely to be severe can suggest policy implications and areas for f...

  9. Ultrasonic imaging of corrosion and fatigue cracks in multilayered airplane structures

    Science.gov (United States)

    Komsky, Igor N.; Achenbach, Jan D.

    1996-11-01

    Application of ultrasonic imaging to the inspection of multilayered airplane structures can provide comprehensive information on possible defects such as corrosion and cracks. A quantitative assessment of defects in internal layers of airplane structures using this technique can be accomplished form an external surface of the airplane skin. No disassembly is required for component evaluation. Therefore this ultrasonic technique can be extremely useful for cost-effective maintenance of airplanes. Three different ultrasonic techniques developed for inspection of the DC-9 and DC-10 airplanes are discussed in this paper. One of the techniques was used for evaluation of corrosion and stress corrosion cracks in a DC-9 tee cap, other techniques have been developed for fatigue crack characterization in a DC-9 rear spar and a DC-10 spar-cap/strap connection, respectively. All three techniques were developed to be applied with the same type of data acquisition and imaging system. However for each kind of flaw and structural configuration substantial modifications of the scanning and the data acquisition procedures have been made. {Peculiarities of each ultrasonic technique will be discussed. The ultrasonic technique for the inspection of the DC-9 tee cap has been approved by the FAA as an alternate means of compliance to meet the requirements of the DC-9 Service Bulletin.

  10. End-to-End Airplane Detection Using Transfer Learning in Remote Sensing Images

    Directory of Open Access Journals (Sweden)

    Zhong Chen

    2018-01-01

    Full Text Available Airplane detection in remote sensing images remains a challenging problem due to the complexity of backgrounds. In recent years, with the development of deep learning, object detection has also obtained great breakthroughs. For object detection tasks in natural images, such as the PASCAL (Pattern Analysis, Statistical Modelling and Computational Learning VOC (Visual Object Classes Challenge, the major trend of current development is to use a large amount of labeled classification data to pre-train the deep neural network as a base network, and then use a small amount of annotated detection data to fine-tune the network for detection. In this paper, we use object detection technology based on deep learning for airplane detection in remote sensing images. In addition to using some characteristics of remote sensing images, some new data augmentation techniques have been proposed. We also use transfer learning and adopt a single deep convolutional neural network and limited training samples to implement end-to-end trainable airplane detection. Classification and positioning are no longer divided into multistage tasks; end-to-end detection attempts to combine them for optimization, which ensures an optimal solution for the final stage. In our experiment, we use remote sensing images of airports collected from Google Earth. The experimental results show that the proposed algorithm is highly accurate and meaningful for remote sensing object detection.

  11. Aircraft Dynamic Response to Damaged and Repaired Runways.

    Science.gov (United States)

    1982-08-01

    32403 USA Lt Col Lapsley R. Caldwell HQ AFESC/RDCR Tyndall AFB, FL 32403 USA SUMMARY * This report provides Minimum Operating Strip (MOS) selection...airplane ground performance on damaged and repaired runways. . REFERENCES: [1] Strickland, William S., Caldwell, Lapsley R.: Minimum Operating Strip...Selection Procedure [21 Caldwell, Lapsley R., Gerardi, Anthony G.: b Proposed Specifications for International Interoperability on Repaired Bomb-Damaged

  12. Metroplex Coordinated Runway Scheduling Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA's System Oriented Runway Management (SORM) project is studying operational concepts and algorithms to improve the efficiency and capacity of metroplex...

  13. A COARSE-TO-FINE MODEL FOR AIRPLANE DETECTION FROM LARGE REMOTE SENSING IMAGES USING SALIENCY MODLE AND DEEP LEARNING

    Directory of Open Access Journals (Sweden)

    Z. N. Song

    2018-04-01

    Full Text Available High resolution remote sensing images are bearing the important strategic information, especially finding some time-sensitive-targets quickly, like airplanes, ships, and cars. Most of time the problem firstly we face is how to rapidly judge whether a particular target is included in a large random remote sensing image, instead of detecting them on a given image. The problem of time-sensitive-targets target finding in a huge image is a great challenge: 1 Complex background leads to high loss and false alarms in tiny object detection in a large-scale images. 2 Unlike traditional image retrieval, what we need to do is not just compare the similarity of image blocks, but quickly find specific targets in a huge image. In this paper, taking the target of airplane as an example, presents an effective method for searching aircraft targets in large scale optical remote sensing images. Firstly, we used an improved visual attention model utilizes salience detection and line segment detector to quickly locate suspected regions in a large and complicated remote sensing image. Then for each region, without region proposal method, a single neural network predicts bounding boxes and class probabilities directly from full images in one evaluation is adopted to search small airplane objects. Unlike sliding window and region proposal-based techniques, we can do entire image (region during training and test time so it implicitly encodes contextual information about classes as well as their appearance. Experimental results show the proposed method is quickly identify airplanes in large-scale images.

  14. 14 CFR 151.80 - Runway paving: Additional runway; other conditions.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Runway paving: Additional runway; other... TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.80 Runway paving: Additional runway; other conditions. Paving an additional runway on an airport that does not qualify for a...

  15. 14 CFR 151.79 - Runway paving: Second runway; wind conditions.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Runway paving: Second runway; wind... TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.79 Runway paving: Second runway; wind conditions. (a) All airports. Paving a second runway on the basis of wind conditions...

  16. Airplane wing deformation and flight flutter detection method by using three-dimensional speckle image correlation technology.

    Science.gov (United States)

    Wu, Jun; Yu, Zhijing; Wang, Tao; Zhuge, Jingchang; Ji, Yue; Xue, Bin

    2017-06-01

    Airplane wing deformation is an important element of aerodynamic characteristics, structure design, and fatigue analysis for aircraft manufacturing, as well as a main test content of certification regarding flutter for airplanes. This paper presents a novel real-time detection method for wing deformation and flight flutter detection by using three-dimensional speckle image correlation technology. Speckle patterns whose positions are determined through the vibration characteristic of the aircraft are coated on the wing; then the speckle patterns are imaged by CCD cameras which are mounted inside the aircraft cabin. In order to reduce the computation, a matching technique based on Geodetic Systems Incorporated coded points combined with the classical epipolar constraint is proposed, and a displacement vector map for the aircraft wing can be obtained through comparing the coordinates of speckle points before and after deformation. Finally, verification experiments containing static and dynamic tests by using an aircraft wing model demonstrate the accuracy and effectiveness of the proposed method.

  17. Runway safety : it's everybody's business

    Science.gov (United States)

    2001-07-01

    This booklet tells pilots and controllers what they can do to help prevent runway incursions by helping them to avoid situations that reduce errors and alerting them to situations as extra vigilance is required. It also provides information on how co...

  18. 14 CFR 121.203 - Nontransport category airplanes: Landing limitations: Destination airport.

    Science.gov (United States)

    2010-01-01

    ... limitations: Destination airport. 121.203 Section 121.203 Aeronautics and Space FEDERAL AVIATION... airport. (a) No person operating a nontransport category airplane may take off that airplane at a weight... destination airport; and (2) Is greater than the weight allowable if the landing is to be made on the runway...

  19. Runway Inspection by RPAS

    Directory of Open Access Journals (Sweden)

    Stanislav Absolon

    2015-10-01

    Full Text Available This article discusses the use of the RPAS for the inspection of the airport operating areas. The paper compares the current process of the inspection of the airport operating areas by the airport staff with the possibilities which are offered by the use of the modern technology RPAS. The following text also describes how to inspect airport operating areas by the RPAS, specific technical possibilities and the applicable technical solutions. Furthermore there are variants of piloting the RPAS, comparing usable equipment, equipment for video recording and the possibility of using thermal imaging camera in the article.

  20. Public Use Airport Runways, Geographic WGS84, BTS (2006) [public_use_airport_runway_BTS_2006

    Data.gov (United States)

    Louisiana Geographic Information Center — The Public Use Airport Runways database is a geographic dataset of runways in the United States and US territories containing information on the physical...

  1. System Predicts Critical Runway Performance Parameters

    Science.gov (United States)

    Millen, Ernest W.; Person, Lee H., Jr.

    1990-01-01

    Runway-navigation-monitor (RNM) and critical-distances-process electronic equipment designed to provide pilot with timely and reliable predictive navigation information relating to takeoff, landing and runway-turnoff operations. Enables pilot to make critical decisions about runway maneuvers with high confidence during emergencies. Utilizes ground-referenced position data only to drive purely navigational monitor system independent of statuses of systems in aircraft.

  2. Runway paving: taking a different approach

    NARCIS (Netherlands)

    Doree, Andries G.; Miller, Seirgei Rosario; ter Huerne, Henderikus L.

    2009-01-01

    Hot Mix Asphalt (HMA) paving of airport runways mostly requires multiple paving teams, multiple pavers, and a wide array of other equipment. The runway paving projects are typically renowned for the logistical effort and the tight margins for overruns, often requiring a relatively large part of the

  3. Airplane Ear

    Science.gov (United States)

    ... your flight. If you're prone to severe airplane ear and must fly often, your doctor may surgically place tubes in your eardrums to aid fluid drainage, ventilate your middle ear, and equalize the ... prevent airplane ear These additional tips can help young children ...

  4. 14 CFR 151.77 - Runway paving: General rules.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Runway paving: General rules. 151.77... (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.77 Runway paving: General rules. (a) On any airport, paving of the designated instrument landing runway (or dominant runway if...

  5. Runway Scheduling Using Generalized Dynamic Programming

    Science.gov (United States)

    Montoya, Justin; Wood, Zachary; Rathinam, Sivakumar

    2011-01-01

    A generalized dynamic programming method for finding a set of pareto optimal solutions for a runway scheduling problem is introduced. The algorithm generates a set of runway fight sequences that are optimal for both runway throughput and delay. Realistic time-based operational constraints are considered, including miles-in-trail separation, runway crossings, and wake vortex separation. The authors also model divergent runway takeoff operations to allow for reduced wake vortex separation. A modeled Dallas/Fort Worth International airport and three baseline heuristics are used to illustrate preliminary benefits of using the generalized dynamic programming method. Simulated traffic levels ranged from 10 aircraft to 30 aircraft with each test case spanning 15 minutes. The optimal solution shows a 40-70 percent decrease in the expected delay per aircraft over the baseline schedulers. Computational results suggest that the algorithm is promising for real-time application with an average computation time of 4.5 seconds. For even faster computation times, two heuristics are developed. As compared to the optimal, the heuristics are within 5% of the expected delay per aircraft and 1% of the expected number of runway operations per hour ad can be 100x faster.

  6. Determining the position of runways from UAV video

    Science.gov (United States)

    Warren, Richard; Fischer, Amber

    2009-05-01

    Most UAVs use a GPS-based auto-landing system. However, GPS systems can fail, either through natural interference or deliberate jamming. To safely operate in the national airspace, UAVs must include a backup auto-landing system. At 21st Century Systems, Inc., we are developing a vision-based landing system capable of replacing GPS when GPS fails. Existing structure-from-motion techniques operate on two frames of video. These techniques find a collection of salient features in each frame. They correctly match the features between the two frames and then use epipolar geometry to calculate distances to each feature. Unfortunately, these techniques are too computationally complex to meet our realtime requirements. Instead, we have developed two closed-formed solutions that provide real-time calculations of the runway's relative position from a single frame of video. Our first approach calculates the distance and orientation based on rectangular features whose size and position are known. Precision runways have many standardized rectangular markings, providing the opportunity to create multiple rectangular templates. In our approach, we use advanced image processing to identify the feature points of these templates, and then calculate the distance to each template, combining the results across multiple templates to reduce the effects of noise. The second approach incorporates additional pose information directly from the UAV's internal compass and IMU. This both reduces the effect of noise from our image processing, and allows us to calculate the UAV's pose relative to the runway from an arbitrary set of features. We are no longer limited to rectangle shaped templates.

  7. Investigation of innovative steel runway beam in industrial building

    Indian Academy of Sciences (India)

    three overhead crane groups were analyzed for LTB, and a sinusoidal runway beam body was developed. These runway beams with different sinusoidal angles were ana- lyzed by using the finite element method (ABAQUS) and compared to each other and other runway IPE-IPN beam sections; furthermore, all models ...

  8. Factors that determine depth perception of trapezoids, windsurfers, runways.

    Science.gov (United States)

    Tseng, Chia-Huei; Gobell, Joetta L; Sperling, George

    2015-01-01

    We report here a windsurfer illusion, a naturally occurring trapezoidal illusion in which the small end of the sail viewed at a distance appears to be pointed away from the observer even when it is closer. This naturally occurring illusion is so compelling that observers are unaware of their gross perceptual misinterpretation of the scene. Four laboratory experiment of this kind of trapezoidal illusion investigated the joint effects of retinal orientation, head position, relative motion, and the relative direction of gravity on automatic depth perception. Observers viewed two adjacent white trapezoids outlined on a black background rotating back and forth ± 20° on a vertical axis much like the sails of two adjacent windsurfers. Observers reported which side of the trapezoids (long or short) appeared to be closer to them (i.e., in front). The longer edge of the trapezoid was reported in front 76 ± 2% of trials ("windsurfer effect") whether it was on the left or on the right. When the display was rotated 90°to produce a runway configuration, there was a striking asymmetry: the long edge was perceived to be in front 97% when it was on the bottom but only 43% when it was on top ("runway effect"). The runway effect persisted when the head was tilted 90° or when displays on the ceiling were viewed from the floor. Ninety-five percent of the variance of the variance in the strikingly different 3D perceptions produced by the same 2D trapezoid image was quantitatively explained by a model that assumes there are just three additive bias factors that account for perceiving an edge as closer: Implicit linear perspective, lower position on the retina (based on an automatic assumption of viewing from above), and being lower in world coordinates.

  9. From Runway to Orbit: Reflections of a NASA Engineer

    Science.gov (United States)

    Iliff, Kenneth W.; Peebles, Curtis L.

    2004-01-01

    In his remarkable memoir Runway to Orbit, Dr. Kenneth W. Iliff - the recently retired Chief Scientist of the NASA Dryden Flight Research Center- tells a highly personal, yet a highly persuasive account of the last forty years of American aeronautical research. His interpretation of events commands respect, because over these years he has played pivotal roles in many of the most important American aeronautics and spaceflight endeavors. Moreover, his narrative covers much of the second half of the first 100 years of flight, a centennial anniversary being celebrated this year. aerospace knowledge. He arrived at the then NASA Flight Research Center in 1962 as a young aeronautical engineer and quickly became involved in two of the seminal projects of modern flight, the X-15 and the lifting bodies. In the process, he pioneered (with Lawrence Taylor) the application of digital computing to the reduction of flight data, arriving at a method known as parameter estimation, now applied the world over. Parameter estimation not only enabled researchers to acquire stability and control derivatives from limited flight data, but in time allowed them to obtain a wide range of aerodynamic effects. Although subsequently involved in dozens of important projects, Dr. Iliff devoted much of his time and energy to hypersonic flight, embodied in the Shuttle orbiter (or as he refers to it, the world s fastest airplane). To him, each Shuttle flight, instrumented to obtain a variety of data, represents a research treasure trove, one that he has mined for years. This book, then, represents the story of Dr. Ken Iliff s passion for flight, his work, and his long and astoundingly productive career. It can be read with profit not just by scientists and engineers, but equally by policy makers, historians, and journalists wishing to better comprehend advancements in flight during the second half of the twentieth century. Dr. Iliff's story is one of immense contributions to the nation s repository of

  10. [A rarely known headache: Airplane travel headache].

    Science.gov (United States)

    Azman, Filiz; Erkılınç, Büşra; Çabalar, Murat; Çağırıcı, Sultan; Yayla, Vildan

    2017-01-01

    Recently, headache associated with airplane travel has gained importance with case reports and took its place in the classification of headache in 2013. This rare condition has different spesific characteristic from the primary headaches and its pathophysiology is not clear yet. In this case report, a 27-years-old female patient was diagnosed with the headache associated with airplane travel by history, examination and imaging findings. The possible pathophysiology and treatment were discussed.

  11. Investigation of innovative steel runway beam in industrial building

    Indian Academy of Sciences (India)

    The design of a runway beam for overhead cranes is of great importance when constructing steel structures, as is the lateral-torsional buckling (LTB) value obtained for I-beam sections. Therefore, engineers must always consider the optimal design of these beams under overhead cranes loads. In this study, runway beams ...

  12. General problem of the airplane

    Science.gov (United States)

    Richard, Maurice; Richard, Paul

    1922-01-01

    A series of equations relating to airplanes are given and examples listed. Some of the equations listed include: the speed, altitude and carrying capacity of various airplanes; weight of an airplane; weight of various parts of an airplane; the polars of the wings; speeds of airplanes; radius of action.

  13. Current status of Joint FAA/NASA Runway Friction Program

    Science.gov (United States)

    Yager, Thomas J.; Vogler, William A.

    1989-01-01

    Tests with specially instrumented NASA B-737 and FAA B-727 aircraft together with several different ground friction measuring devices have been conducted for a variety of runway surface types and wetness conditions. This effort is part of the Joint FAA/NASA Aircraft Ground Vehicle Runway Friction Program aimed at obaining a better understanding of aircraft ground handling performance under adverse weather conditions and defining relationships between aircraft and ground vehicle tire friction measurements. Aircraft braking performance on dry, wet, snow-, and ice-covered runway conditions is discussed together with ground vehicle friction data obtained under similar runway conditions. For the wet, compacted snow- and ice-covered runway conditions, the relationship between ground vehicles and aircraft friction data is identified. The influence of major test parameters on friction measurements such as speed, test tire characteristics, and surface contaminant type are discussed. The test results indicate that use of properly maintained and calibrated ground vehicles for monitoring runway friction conditions should be encouraged particularly under adverse weather conditions. The current status of the runway friction program is summarized and future test plans are identified.

  14. Headache during airplane travel ("airplane headache"): first case in Greece.

    Science.gov (United States)

    Kararizou, Evangelia; Anagnostou, Evangelos; Paraskevas, George P; Vassilopoulou, Sofia D; Naoumis, Dimitrios; Kararizos, Grigoris; Spengos, Konstantinos

    2011-08-01

    Headache related to airplane flights is rare. We describe a 37-year-old female patient with multiple intense, jabbing headache episodes over the last 3 years that occur exclusively during airplane flights. The pain manifests during take-off and landing, and is located always in the left retro-orbital and frontotemporal area. It is occasionally accompanied by dizziness, but no additional symptoms occur. Pain intensity diminishes and disappears after 15-20 min. Apart from occasional dizziness, no other symptoms occur. The patient has a history of tension-type headache and polycystic ovaries. Blood tests and imaging revealed no abnormalities. Here, we present the first case in Greece. We review the current literature on this rare syndrome and discuss on possible pathophysiology and the investigation of possible co-factors such as anxiety and depression.

  15. ALOGORITHMS FOR AUTOMATIC RUNWAY DETECTION ON VIDEO SEQUENCES

    Directory of Open Access Journals (Sweden)

    A. I. Logvin

    2015-01-01

    Full Text Available The article discusses algorithm for automatic runway detection on video sequences. The main stages of algorithm are represented. Some methods to increase reliability of recognition are described.

  16. Predictor of Airport Runway Capacity (PARC), Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Estimates of arrival and departure capacities of individual airport runways are used to predict occurrences of demand-capacity imbalance, and to meter arrivals and...

  17. Capacity Analysis for Parallel Runway through Agent-Based Simulation

    Directory of Open Access Journals (Sweden)

    Yang Peng

    2013-01-01

    Full Text Available Parallel runway is the mainstream structure of China hub airport, runway is often the bottleneck of an airport, and the evaluation of its capacity is of great importance to airport management. This study outlines a model, multiagent architecture, implementation approach, and software prototype of a simulation system for evaluating runway capacity. Agent Unified Modeling Language (AUML is applied to illustrate the inbound and departing procedure of planes and design the agent-based model. The model is evaluated experimentally, and the quality is studied in comparison with models, created by SIMMOD and Arena. The results seem to be highly efficient, so the method can be applied to parallel runway capacity evaluation and the model propose favorable flexibility and extensibility.

  18. Productive urbanisms : From Runways to Greenways

    Energy Technology Data Exchange (ETDEWEB)

    White, M. [Toronto Univ., ON (Canada). Faculty of Architecture Landscape and Design; Sheppard, L. [Waterloo Univ., Cambridge, ON (Canada). School of Architecture

    2009-07-01

    This paper reported on an international competition for urban development in Reykjavik, Iceland in 2007. Known as the Runways to Greenways proposal, the prototype depends on a strategy that considers energy use, ecology and land use when integrating public amenities. While Iceland is advanced in terms of its vast geothermal reserves, it is a country that uses the most energy per capita. There are 5 major geothermal power plants in Iceland which produce about 26 per cent of the country's electricity. Geothermal heating also meets the heating and hot water needs for nearly 87 per cent of the nation's buildings. However, Reykjavik continues to rely heavily on imported fossil fuel primarily for fishing, transport and heavy industries. A recent masterplan for the expansion of Reykjavik calls for the densification of the city. The objective was to propose a city that is self-sufficient in terms of energy, agriculture and water while addressing the development potentials of biotechnology and ecotechnology enterprises in Reykjavik. The integrated infrastructure calls for a symbiotic relationship between urbanism and nature, and between energy consumption and production in an effort to pair infrastructure, landscape, public infrastructure and architecture in a culturally, economically and environmentally productive urban realm. 9 refs., 12 figs.

  19. Metroplex-Wide Runway Configuration Management using COBRA (Configuration Optimization for Balanced Runway/Route Assignments) Tool, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — SSCI proposes to develop and test a Configuration Optimization for Balanced Runway/Route Assignments (COBRA) tool, which includes analysis and planner algorithms for...

  20. Aircraft and ground vehicle friction correlation test results obtained under winter runway conditions during joint FAA/NASA Runway Friction Program

    Science.gov (United States)

    Yager, Thomas J.; Vogler, William A.; Baldasare, Paul

    1988-01-01

    Aircraft and ground vehicle friction data collected during the Joint FAA/NASA Runway Friction Program under winter runway conditions are discussed and test results are summarized. The relationship between the different ground vehicle friction measurements obtained on compacted snow- and ice-covered conditions is defined together with the correlation to aircraft tire friction performance under similar runway conditions.

  1. Aluminum runway surface as possible aid to aircraft braking

    Science.gov (United States)

    Miller, C. D.; Pinkel, I. I.

    1973-01-01

    Several concepts are described for use singly or in combination to improve aircraft braking. All involve a thin layer of aluminum covering all or part of the runway. Advantage would derive from faster heat conduction from the tire-runway interface. Heating of tread surface with consequent softening and loss of friction coefficient should be reduced. Equations are developed indicating that at least 99 percent of friction heat should flow into the aluminum. Preliminary test results indicate a coefficient of sliding friction of 1.4, with predictably slight heating of tread. Elimination of conventional brakes is at least a remote possibility.

  2. Prospect of ultralight airplanes development

    Directory of Open Access Journals (Sweden)

    Adam KONICZEK

    2015-09-01

    Full Text Available The article presents characteristic of ultralight airplanes, rules and current interest of them. The purpose is to determine prospect of ultralight airplanes development on the basis of Civil Aviation Authority statistics analysis and trend of aviation market.

  3. Proposed Specifications for International Interoperability on Repaired Bomb Damaged Runways

    Science.gov (United States)

    1981-01-01

    ESL-TR-81-03 PROPOSED SPECIFICATIONS FOR INTERNATIONAL INTEROPERABILITY ON REPAIRED BOMB DAMAGED RUNWAYS CALDWELL, LAPSLEY R. LT COL. USAF GERARDI... Lapsley R., Lt Col, USAF xctard,., Anthony G. IN-HOUSE 9. PERFORk, AG’ •)RGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJ :CT, TASKAREA & WORK

  4. Mitigation of low-frequency groundnoise from runways

    NARCIS (Netherlands)

    Eerden, F.J.M. van der; Salomons, E.M.; Beeks, A.A.F.M.

    2007-01-01

    With the extra runway at Amsterdam Schiphol Airport, introduced in 2003, the noise nuisance for local residents increased due to increased groundnoise. In a case study the effect of enhanced ground absorption on the propagation of low-frequency noise from aircraft ground operations, e.g. departing

  5. Field Evaluation of Ultra-High Pressure Water Systems for Runway Rubber Removal

    Science.gov (United States)

    2014-04-01

    tire rubber buildup occludes pavement microtexture and macrotexture, causing a significant loss in available skid resistance during wet conditions...concrete (PCC) runway and data were compared using statistical methods. Runway pavement skid resistance characteristics, such as friction and...pavements to have adequate skid resistance to safely land aircraft. Runway pavement skid resistance tends to degrade over time due to several factors

  6. Airplane headache: a further case report of a young man.

    Science.gov (United States)

    Domitrz, Izabela

    2010-12-01

    Headache with normal examinations and imaging, occurring during an airplane flight has been rarely reported. We present a young patient with a new type of headache that appeared during flights: take-off and landing of a plane and was not associated with other conditions. This airplane headache is rather rare in population and the pathophysiology of this type is not clear. Secondary causes must be ruled out before the diagnosis of a primary headache is made.

  7. System-Oriented Runway Management Concept of Operations

    Science.gov (United States)

    Lohr, Gary W.; Atkins, Stephen

    2015-01-01

    This document describes a concept for runway management that maximizes the overall efficiency of arrival and departure operations at an airport or group of airports. Specifically, by planning airport runway configurations/usage, it focuses on the efficiency with which arrival flights reach their parking gates from their arrival fixes and departure flights exit the terminal airspace from their parking gates. In the future, the concept could be expanded to include the management of other limited airport resources. While most easily described in the context of a single airport, the concept applies equally well to a group of airports that comprise a metroplex (i.e., airports in close proximity that share resources such that operations at the airports are at least partially dependent) by including the coordination of runway usage decisions between the airports. In fact, the potential benefit of the concept is expected to be larger in future metroplex environments due to the increasing need to coordinate the operations at proximate airports to more efficiently share limited airspace resources. This concept, called System-Oriented Runway Management (SORM), is further broken down into a set of airport traffic management functions that share the principle that operational performance must be measured over the complete surface and airborne trajectories of the airport's arrivals and departures. The "system-oriented" term derives from the belief that the traffic management objective must consider the efficiency of operations over a wide range of aircraft movements and National Airspace System (NAS) dynamics. The SORM concept is comprised of three primary elements: strategic airport capacity planning, airport configuration management, and combined arrival/departure runway planning. Some aspects of the SORM concept, such as using airport configuration management1 as a mechanism for improving aircraft efficiency, are novel. Other elements (e.g., runway scheduling, which is a part

  8. Topological risk mapping of runway overruns: A probabilistic approach

    International Nuclear Information System (INIS)

    The paper presents a topological risk mapping for aircraft overruns. The proposed procedure is based on the study published in 2008 by Hall et al. (Analysis of aircraft overruns and undershoots for runway safety areas. Airport Cooperative Research Program. Washington, DC: Transportation Research Board; 2008). In that study the authors performed an analysis of aircraft overruns and undershoots for runway safety areas proposing the ACRP hazard probability model. In the present study the model was integrated into a two-step Monte Carlo simulation procedure to assess the risk of overrun accidents and to provide a topological risk map for a specific airport area. The model was modified to utilize traffic-related and weather-related factors described by statistical distributions of historical data of the airport under analysis. The probability distribution of overrun events was then combined with the Longitudinal and Lateral Location models Hall et al. (Analysis of aircraft overruns and undershoots for runway safety areas. Airport Cooperative Research Program. Washington, DC: Transportation Research Board; 2008) to obtain a two-dimensional grid assessing the probability of each area to be the end point of a runway overrun. The expected kinetic energy of the aircraft in a given point of the grid is used as severity index. The procedure is suitable for generalisation and it allows a more detailed planning of Airport Safety Areas (ASA), improving the correct implementation of ICAO recommendations. Results are also useful for land planning and structural analyses in airport areas. - Highlights: • Two-step probabilistic procedure for the topological characterisation of overrun risk in airports. • Monte Carlo simulation applied to existing overrun probability and location models. • Proposed topological severity index: Iso-Kinetic Energy Areas (KEA). • Expected kinetic energy almost constant for about 1000 m beyond the runway end

  9. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans-Christian; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases......, due to altered cabin pressure, increase the amount of potential flatus. Holding back flatus on an airplane may cause significant discomfort and physical symptoms, whereas releasing flatus potentially presents social complications. To avoid this problem we humbly propose that active charcoal should...... airplanes, by using a methane breath test or to alter the fibre content of airline meals in order to reduce its flatulent potential. We conclude that the use of active charcoal on airlines may improve flight comfort for all passengers....

  10. 14 CFR 36.7 - Acoustical change: Transport category large airplanes and jet airplanes.

    Science.gov (United States)

    2010-01-01

    ... airplanes and jet airplanes. 36.7 Section 36.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... § 36.7 Acoustical change: Transport category large airplanes and jet airplanes. (a) Applicability. This section applies to all transport category large airplanes and jet airplanes for which an acoustical change...

  11. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans C; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases...... airplanes, by using a methane breath test or to alter the fibre content of airline meals in order to reduce its flatulent potential. We conclude that the use of active charcoal on airlines may improve flight comfort for all passengers....

  12. 78 FR 28152 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0416; Directorate Identifier 2012-NM-144-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A318-111 and -112 airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. The existing AD currently requires repetitive inspections of the 80VU rack lower...

  13. 78 FR 15874 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Model A310 series airplanes. This AD...

  14. 78 FR 70207 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-25

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4- 600R series airplanes; and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was...

  15. 78 FR 9581 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-11

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called A300-600 series airplanes); and Model A310 series airplanes. This AD was...

  16. Childhood headache attributed to airplane travel: a case report.

    Science.gov (United States)

    Rogers, Kirsty; Rafiq, Nadia; Prabhakar, Prab; Ahmed, Mas

    2015-05-01

    Headache attributed to airplane flights is a rare form of headache disorder. This case study describes an 11-year-old girl with recurrent, severe, frontal headaches occurring during airplane travel. The episodes were associated with dizziness and facial pallor but no additional symptoms and showed spontaneous resolution on landing. Blood tests and imaging revealed no abnormalities. The present case fulfils the criteria for airplane headache recently included in the revised edition of the International Classification of Headache Disorders (ICHD-III Beta). Only a few cases of airplane headache have been reported in children. To our knowledge, this is the fourth case. We review the current literature on this rare syndrome and discuss various proposed pathophysiological mechanisms. © The Author(s) 2014.

  17. NASA Research For Instrument Approaches To Closely Spaced Parallel Runways

    Science.gov (United States)

    Elliott, Dawn M.; Perry, R. Brad

    2000-01-01

    Within the NASA Aviation Systems Capacity Program, the Terminal Area Productivity (TAP) Project is addressing airport capacity enhancements during instrument meteorological condition (IMC). The Airborne Information for Lateral Spacing (AILS) research within TAP has focused on an airborne centered approach for independent instrument approaches to closely spaced parallel runways using Differential Global Positioning System (DGPS) and Automatic Dependent Surveillance-Broadcast (ADS-B) technologies. NASA Langley Research Center (LaRC), working in partnership with Honeywell, Inc., completed in AILS simulation study, flight test, and demonstration in 1999 examining normal approaches and potential collision scenarios to runways with separation distances of 3,400 and 2,500 feet. The results of the flight test and demonstration validate the simulation study.

  18. Development of a Bayesian Belief Network Runway Incursion Model

    Science.gov (United States)

    Green, Lawrence L.

    2014-01-01

    In a previous paper, a statistical analysis of runway incursion (RI) events was conducted to ascertain their relevance to the top ten Technical Challenges (TC) of the National Aeronautics and Space Administration (NASA) Aviation Safety Program (AvSP). The study revealed connections to perhaps several of the AvSP top ten TC. That data also identified several primary causes and contributing factors for RI events that served as the basis for developing a system-level Bayesian Belief Network (BBN) model for RI events. The system-level BBN model will allow NASA to generically model the causes of RI events and to assess the effectiveness of technology products being developed under NASA funding. These products are intended to reduce the frequency of RI events in particular, and to improve runway safety in general. The development, structure and assessment of that BBN for RI events by a Subject Matter Expert panel are documented in this paper.

  19. Runway Detection From Map, Video and Aircraft Navigational Data

    Science.gov (United States)

    2016-03-01

    COVERED Master’s thesis 4. TITLE AND SUBTITLE RUNWAY DETECTION FROM MAP, VIDEO AND AIRCRAFT NAVIGATIONAL DATA 5. FUNDING NUMBERS 6. AUTHOR ...11. SUPPLEMENTARY NOTES The views expressed in this thesis are those of the author and do not reflect the official policy or position of the... Mexican Navy, unmanned aerial vehicles (UAV) have been equipped with daylight and infrared cameras. Processing the video information obtained from these

  20. The Effects of Weather on Rapid Runway Repair. Volume 1

    Science.gov (United States)

    1983-05-01

    Transmission. The transmission is a Caterpillar D-7155 overdrive 16-speed semiauto-matic with renote air control power shift. There are 5.5 gallons of...extreme environmental conditions. (8) Steering System. The Ross Integral Power with Assist Cylinder is used. A Hydraulic Power Booster provides...CEEDO-TR-78-44, June 1978. 57. Ross , C.A. ( Ross Engineering Associates, Inc.), FOD Cover Analysis for Rapid Runway Repair, ESL-TR-80-59, 30 October

  1. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans-Christian; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases......, due to altered cabin pressure, increase the amount of potential flatus. Holding back flatus on an airplane may cause significant discomfort and physical symptoms, whereas releasing flatus potentially presents social complications. To avoid this problem we humbly propose that active charcoal should...... be embedded in the seat cushion, since this material is able to neutralise the odour. Moreover active charcoal may be used in trousers and blankets to emphasise this effect. Other less practical or politically correct solutions to overcome this problem may be to restrict access of flatus-prone persons from...

  2. Airplane dopes and doping

    Science.gov (United States)

    Smith, W H

    1919-01-01

    Cellulose acetate and cellulose nitrate are the important constituents of airplane dopes in use at the present time, but planes were treated with other materials in the experimental stages of flying. The above compounds belong to the class of colloids and are of value because they produce a shrinking action on the fabric when drying out of solution, rendering it drum tight. Other colloids possessing the same property have been proposed and tried. In the first stages of the development of dope, however, shrinkage was not considered. The fabric was treated merely to render it waterproof. The first airplanes constructed were covered with cotton fabric stretched as tightly as possible over the winds, fuselage, etc., and flying was possible only in fine weather. The necessity of an airplane which would fly under all weather conditions at once became apparent. Then followed experiments with rubberized fabrics, fabrics treated with glue rendered insoluble by formaldehyde or bichromate, fabrics treated with drying and nondrying oils, shellac, casein, etc. It was found that fabrics treated as above lost their tension in damp weather, and the oil from the motor penetrated the proofing material and weakened the fabric. For the most part the film of material lacked durability. Cellulose nitrate lacquers, however were found to be more satisfactory under varying weather conditions, added less weight to the planes, and were easily applied. On the other hand, they were highly inflammable, and oil from the motor penetrated the film of cellulose nitrate, causing the tension of the fabric to be relaxed.

  3. 77 FR 37797 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-06-25

    ...-059-AD; Amendment 39-17092; AD 2012-12-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 series airplanes; Airbus Model A330-200 Freighter series airplanes; Airbus Model A330-300 series airplanes; Airbus Model...

  4. 14 CFR 125.93 - Airplane limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations. 125.93 Section 125.93...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements § 125.93 Airplane...

  5. 78 FR 59295 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-09-26

    ...-0829; Directorate Identifier 2013-NM-085-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Model A330-201, -202, -203, -223, - 223F, -243, and -243F Airplanes, Model A330-300 series airplanes, and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. AD 2010-23-12 requires...

  6. 77 FR 6023 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-07

    ...-0038; Directorate Identifier 2011-NM-209-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airplanes and Model A310-203, -204, - 221, and -222 airplanes. This proposed AD was prompted by a report of... explosion and consequent loss of the airplane. DATES: We must receive comments on this proposed AD by March...

  7. 78 FR 27015 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 and A330-300 series airplanes, and Model A340-200 and A340-300 series airplanes... seal on a solenoid. This AD requires, depending on airplane configuration, modifying three flight...

  8. 78 FR 7257 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-01

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT...-200 Freighter series airplanes; Model A330-200 and - 300 series airplanes; and Model A340-200 and -300 series airplanes. This AD was prompted by a report of a manufacturing defect in certain rods installed in...

  9. 78 FR 28159 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0418; Directorate Identifier 2012-NM-200-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes...

  10. 14 CFR 23.3 - Airplane categories.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane categories. 23.3 Section 23.3... STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES General § 23.3 Airplane categories. (a) The normal category is limited to airplanes that have a seating configuration, excluding pilot...

  11. 78 FR 60798 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    ...-0363; Directorate Identifier 2013-NM-031-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) for all Airbus Model A330-200, -300 and -200 Freighter series airplanes, and Model A340-200, -300, -500, and -600 series airplanes. The NPRM proposed to require, for certain airplanes, revising...

  12. 78 FR 9787 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-12

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Airbus [[Page 9788

  13. 78 FR 21227 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200, A330-200 Freighter, A330-300, A340-200, and A340-300 series airplanes; and Model A340-541 airplanes and Model A340- 642 airplanes. This AD was prompted by reports of cracks in the...

  14. Laboratory and On-Site Tests for Rapid Runway Repair

    Directory of Open Access Journals (Sweden)

    Federico Leonelli

    2017-11-01

    Full Text Available The attention to rapid pavement repair has grown fast in recent decades: this topic is strategic for the airport management process for civil purposes and peacekeeping missions. This work presents the results of laboratory and on-site tests for rapid runway repair, in order to analyse and compare technical and mechanical performances of 12 different materials currently used in airport. The study focuses on site repairs, a technique adopted most frequently than repairs with modular elements. After describing mechanical and physical properties of the examined materials (2 bituminous emulsions, 5 cement mortars, 4 cold bituminous mixtures and 1 expanding resin, the study presents the results of carried out mechanical tests. The results demonstrate that the best performing material is a one-component fast setting and hardening cement mortar with graded aggregates. This material allows the runway reopening 6 h after the work. A cold bituminous mixture (bicomponent premixed cold asphalt with water as catalyst and the ordinary cement concrete allow the reopening to traffic after 18 h, but both ensure a lower service life (1000 coverages than the cement mortar (10,000 coverages. The obtained results include important information both laboratory level and field, and they could be used by airport management bodies and road agencies when scheduling and evaluating pavement repairs.

  15. Technical Note: Outlays on Construction of Airport Runways with Prestressed and Dowelled Pavements

    Science.gov (United States)

    Więckowski, Andrzej; Sznurawa, Alicja

    2015-09-01

    For two variants of runways with abrasive concrete pavements in the prestressed and dowelled technologies, analyses have been presented regarding labour, materials, use of machinery, and financial outlays, together with the necessary technological-organisational analyses and assessment of work execution cycles, by the example of construction of a runway at the Katowice Airport.

  16. 76 FR 67018 - Notice to Manufacturers of Airport In-Pavement Stationary Runway Weather Information Systems

    Science.gov (United States)

    2011-10-28

    ...-Pavement Stationary Runway Weather Information Systems AGENCY: Federal Aviation Administration (FAA), U.S. DOT. ACTION: Notice to Manufacturers of In-Pavement Stationary Runway Weather Information Systems... Operations. This notice requests information from manufacturers of systems meeting the technical requirements...

  17. Exploration of the Theoretical Physical Capacity of the John F. Kennedy International Airport Runway System

    Science.gov (United States)

    Neitzke, Kurt W.; Guerreiro, Nelson M.

    2014-01-01

    A design study was completed to explore the theoretical physical capacity (TPC) of the John F. Kennedy International Airport (KJFK) runway system for a northflow configuration assuming impedance-free (to throughput) air traffic control functionality. Individual runways were modeled using an agent-based, airspace simulation tool, the Airspace Concept Evaluation System (ACES), with all runways conducting both departures and arrivals on a first-come first-served (FCFS) scheduling basis. A realistic future flight schedule was expanded to 3.5 times the traffic level of a selected baseline day, September 26, 2006, to provide a steady overdemand state for KJFK runways. Rules constraining departure and arrival operations were defined to reflect physical limits beyond which safe operations could no longer be assumed. Safety buffers to account for all sources of operational variability were not included in the TPC estimate. Visual approaches were assumed for all arrivals to minimize inter-arrival spacing. Parallel runway operations were assumed to be independent based on lateral spacing distances. Resulting time intervals between successive airport operations were primarily constrained by same-runway and then by intersecting-runway spacing requirements. The resulting physical runway capacity approximates a theoretical limit that cannot be exceeded without modifying runway interaction assumptions. Comparison with current KJFK operational limits for a north-flow runway configuration indicates a substantial throughput gap of approximately 48%. This gap may be further analyzed to determine which part may be feasibly bridged through the deployment of advanced systems and procedures, and which part cannot, because it is either impossible or not cost-effective to control. Advanced systems for bridging the throughput gap may be conceptualized and simulated using this same experimental setup to estimate the level of gap closure achieved.

  18. STS-114 Space Shuttle Discovery Landed on Runway

    Science.gov (United States)

    2005-01-01

    The sun rises on the Space Shuttle Discovery as it rests on the runway at Edward's Air Force Base in California after a safe landing at 5:11 am (PDT) on August 9, 2005. The STS-114 landing concluded a historic 14 day return to flight mission to the International Space Station (ISS) after nearly a two and one half year delay in flight after the Space Shuttle Columbia tragedy in February 2003. Three successful space walks performed during the mission included a demonstration of repair techniques to the Shuttle's thermal tiles known as the Thermal Protection System, the replacement of a failed Control Moment Gyroscope which helps keep the station oriented properly, and the installation of the External Stowage Platform, a space 'shelf' for holding spare parts during Station construction. The shuttle's heat shield repair was a first for Shuttle repair while still in space.

  19. Mars Gashopper Airplane, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Mars Gas Hopper Airplane, or "gashopper" is a novel concept for propulsion of a robust Mars flight and surface exploration vehicle that utilizes indigenous CO2...

  20. Small Airplane Certification Compliance Program

    Science.gov (United States)

    1997-01-02

    This advisory circular (AC) provides a compilation of historically acceptable means of compliance to specifically selected sections of Part 23 of the Federal Aviation Regulations that have become burdensome for small low performance airplanes to show...

  1. Evaluation of high pressure water blast with rotating spray bar for removing paint and rubber deposits from airport runways, and review of runway slipperiness problems created by rubber contamination

    Science.gov (United States)

    Horne, W. B.; Griswold, G. D.

    1975-01-01

    A high pressure water blast with rotating spray bar treatment for removing paint and rubber deposits from airport runways is studied. The results of the evaluation suggest that the treatment is very effective in removing above surface paint and rubber deposits to the point that pavement skid resistance is restored to trafficked but uncontaminated runway surface skid resistance levels. Aircraft operating problems created by runway slipperiness are reviewed along with an assessment of the contributions that pavement surface treatments, surface weathering, traffic polishing, and rubber deposits make in creating or alleviating runway slipperiness. The results suggest that conventional surface treatments for both portland cement and asphaltic concrete runways are extremely vulnerable to rubber deposit accretions which can produce runway slipperiness conditions for aircraft operations as or more slippery than many snow and ice-covered runway conditions. Pavement grooving surface treatments are shown to be the least vulnerable to rubber deposits accretion and traffic polishing of the surface treatments examined.

  2. Effects of runway shift and stay rules on rats' serial pattern learning in the T-maze.

    Science.gov (United States)

    Cohen, Jerome; Westlake, Kimberly; Szelest, Izabela

    2004-11-01

    Rats received three-trial series on a T-maze consisting of extended visually distinct left-black and right-striped side runways. During the first phase of training, when allowed to select baited runways within these series, they predominantly alternated their choices. During the second phase, rats received forced-choice serial pattern training of series consisting of two rewarded (R) trials and one nonrewarded (N) trial in two fixed orders, RRN and RNR. In Experiment 1, the rats in the runway shift rule group always received the second R trial when forced down a runway opposite that on the preceding trial in the series and the N trial when forced down the same runway. The rats in the runway stay rule group always received the second R trial when forced down the same runway and the N trial when forced down the opposite runway. In Experiment 2, each rat was conditionally trained with both runway outcome rules as determined by the central alley lighting and the type of food in the side alleys. The rats took longer to reduce their running speed on the N trial within each sequence under the runway stay rule than under the runway shift rule. They also took longer to acquire serial pattern responding for the RNR than for the RRN series only under the runway stay rule condition. When subsequently reexposed to series of free-choice trials on the final phase, rats maintained spontaneous alternating choice patterns under the runway shift rule conditions but either seldom alternated their choices (Experiment 1) or greatly reduced choice alternations (Experiment 2) under the runway stay rule condition. We discussed these effects in terms of rats' natural foraging strategies and as a factor that interacts with other within- and between-series variables that affect serial pattern behavior.

  3. 76 FR 21938 - Potential Environmental Impacts of the Proposed Runway 13 Extension and Associated Actions for...

    Science.gov (United States)

    2011-04-19

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Potential Environmental Impacts of the Proposed Runway 13 Extension and Associated Actions for the Devils Lake Regional Airport in Devils Lake, ND AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION...

  4. Statistical Decision Support Tools for System-Oriented Runway Management, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — The feasibility of developing a statistical decision support system for traffic flow management in the terminal area and runway load balancing was demonstrated in...

  5. 77 FR 12989 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-05

    ...-16963; AD 2012-04-07] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for certain Airbus Model A330-200 series airplanes; Model A330-300 series airplanes... resulting in MLG structural damage. Airbus carried out an investigation, demonstrating that the life limit...

  6. 78 FR 69594 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-20

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airworthiness directive (AD) for all Airbus Model A330 series airplanes. The NPRM would have required... rulemaking (NPRM) for a new AD for all Airbus Model A330 series airplanes. The NPRM, FAA Docket No. FAA-2013...

  7. 78 FR 17071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-20

    ...-17381; AD 2013-05-09] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for certain Airbus Model A330-200, -300, and -200 Freighter series airplanes; and all Airbus Model A340-200 and -300 series airplanes. This AD was prompted by a determination that the...

  8. 78 FR 14647 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-07

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... (AD) for certain Airbus Model A310-204, -222, -304, -322, and -324 airplanes. This AD was prompted by... airplane. DATES: This AD becomes effective April 11, 2013. The Director of the Federal Register approved...

  9. 78 FR 31386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-24

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...) for all Airbus Model A330-200 and -300 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. That AD currently requires a one-time detailed inspection of both main landing gear...

  10. 78 FR 49915 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-16

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of..., for certain Airbus Model A310 series airplanes. AD 2004-15-07 required repetitive inspections for..., International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356...

  11. 78 FR 46536 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0668; Directorate Identifier 2013-NM-017-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600R series airplanes. This proposed AD was prompted by reports of cracks found in the bottom wing... at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the...

  12. 78 FR 8054 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-05

    ...-1321; Directorate Identifier 2011-NM-147-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A310 series airplanes. The existing AD currently requires repetitive inspections for fatigue cracking... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  13. 78 FR 40057 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0467; Directorate Identifier 2013-NM-023-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports of certain sliding windows that were... from safely evacuating the airplane during an emergency. DATES: We must receive comments on this...

  14. 77 FR 7523 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for all Airbus Model A340-600 series airplanes. This AD requires modifying the fire..., Transport Airplane Directorate, FAA 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 227...

  15. 78 FR 7261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-01

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A310-203 airplanes. This AD was prompted by a report of an analysis that demonstrated a...-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone (425...

  16. 78 FR 78294 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-26

    ...-1031; Directorate Identifier 2013-NM-155-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and A330-300 series airplanes; and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. This proposed AD was prompted by the failure of the generator control unit-constant speed motor...

  17. 78 FR 15335 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-11

    ...-0208; Directorate Identifier 2012-NM-204-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by a determination that certain maintenance... airplane. DATES: We must receive comments on this proposed AD by April 25, 2013. ADDRESSES: You may send...

  18. 78 FR 12988 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-26

    ...-0094; Directorate Identifier 2012-NM-160-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports that certain trimmable horizontal... of control of the airplane. DATES: We must receive comments on this proposed AD by April 12, 2013...

  19. 14 CFR 121.605 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 121.605 Section 121.605..., FLAG, AND SUPPLEMENTAL OPERATIONS Dispatching and Flight Release Rules § 121.605 Airplane equipment. No person may dispatch or release an airplane unless it is airworthy and is equipped as prescribed in § 121...

  20. 78 FR 40074 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0465; Directorate Identifier 2012-NM-085-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... series airplanes. This proposed AD was prompted by a determination that oxygen generators installed on a... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  1. 14 CFR 125.355 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 125.355 Section 125.355...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Flight Release Rules § 125.355 Airplane...

  2. 78 FR 15279 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 Freighter, -200, and -300 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. This AD was prompted by a report that erroneous height indication by one radio...

  3. 78 FR 37498 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ...-0463; Directorate Identifier 2012-NM-165-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and -300 series airplanes. This proposed AD was prompted by a report that a certain wire harness... resulting in an uncontrolled fire and subsequent loss of the airplane. DATES: We must receive comments on...

  4. 77 FR 2928 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-01-20

    ...-0033; Directorate Identifier 2011-NM-086-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A310 series airplanes... require prohibiting in-flight use of the green EMPs; revising the airplane flight manual (AFM) limitations...

  5. 78 FR 65173 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by a determination that... Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this...

  6. 78 FR 54377 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-09-04

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports that certain... of control of the airplane. DATES: This AD becomes effective October 9, 2013. The Director of the...

  7. 78 FR 40069 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0539; Directorate Identifier 2012-NM-145-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600 and Model A300 B4-600R series airplanes. That AD currently requires repetitive inspections to... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  8. 78 FR 14029 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-04

    ...-0096; Directorate Identifier 2012-NM-143-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes..., A319-112, A319-115, A319-132, and A319-133 airplanes. This proposed AD was prompted by a report that a...-14 lower shell panel, was not installed on airplanes during production. This proposed AD would...

  9. 78 FR 19085 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-29

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports of oil residue... in reduced control of the airplane. DATES: This AD becomes effective May 3, 2013. The Director of the...

  10. 78 FR 37437 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... Airbus Model A318, A319, A320, and A321 series airplanes. That AD currently requires one-time and... production rework has been identified. This new AD adds airplanes with certain rudders to the AD...

  11. 78 FR 14162 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-05

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A310-203, -204, -222, -304, -322, and -324 airplanes. This AD was prompted by a design...: Dan Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA...

  12. 78 FR 39190 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-01

    ...-0543; Directorate Identifier 2012-NM-202-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by a determination that certain special washers... . You may review copies of the referenced service information at the FAA, Transport Airplane Directorate...

  13. 78 FR 68352 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-14

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-223F, -223, -321, -322, and -323 airplanes. This AD was prompted by fatigue load... damage to the airplane. DATES: This AD becomes effective December 19, 2013. The Director of the Federal...

  14. Development and Execution of the RUNSAFE Runway Safety Bayesian Belief Network Model

    Science.gov (United States)

    Green, Lawrence L.

    2015-01-01

    One focus area of the National Aeronautics and Space Administration (NASA) is to improve aviation safety. Runway safety is one such thrust of investigation and research. The two primary components of this runway safety research are in runway incursion (RI) and runway excursion (RE) events. These are adverse ground-based aviation incidents that endanger crew, passengers, aircraft and perhaps other nearby people or property. A runway incursion is the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take-off of aircraft; one class of RI events simultaneously involves two aircraft, such as one aircraft incorrectly landing on a runway while another aircraft is taking off from the same runway. A runway excursion is an incident involving only a single aircraft defined as a veer-off or overrun off the runway surface. Within the scope of this effort at NASA Langley Research Center (LaRC), generic RI, RE and combined (RI plus RE, or RUNSAFE) event models have each been developed and implemented as a Bayesian Belief Network (BBN). Descriptions of runway safety issues from the literature searches have been used to develop the BBN models. Numerous considerations surrounding the process of developing the event models have been documented in this report. The event models were then thoroughly reviewed by a Subject Matter Expert (SME) panel through multiple knowledge elicitation sessions. Numerous improvements to the model structure (definitions, node names, node states and the connecting link topology) were made by the SME panel. Sample executions of the final RUNSAFE model have been presented herein for baseline and worst-case scenarios. Finally, a parameter sensitivity analysis for a given scenario was performed to show the risk drivers. The NASA and LaRC research in runway safety event modeling through the use of BBN technology is important for several reasons. These include: 1) providing a means to clearly

  15. Vertical Temperature Simulation of Pegasus Runway, McMurdo Station, Antarctica

    Science.gov (United States)

    2015-01-01

    throughout the year below a depth of 15 m beneath the surface of the Peg- asus Runway. We set the lower boundary of our simulation domain at 15 m where we...Station and Peg- asus Runway; and 1/2 1 2 365 2 m i p i i i C z k z ρπ =      = ∑ k is a depth-averaged value of the thermal properties of

  16. Hydroelastic response of a floating runway to cnoidal waves

    International Nuclear Information System (INIS)

    Ertekin, R. C.; Xia, Dingwu

    2014-01-01

    The hydroelastic response of mat-type Very Large Floating Structures (VLFSs) to severe sea conditions, such as tsunamis and hurricanes, must be assessed for safety and survivability. An efficient and robust nonlinear hydroelastic model is required to predict accurately the motion of and the dynamic loads on a VLFS due to such large waves. We develop a nonlinear theory to predict the hydroelastic response of a VLFS in the presence of cnoidal waves and compare the predictions with the linear theory that is also developed here. This hydroelastic problem is formulated by directly coupling the structure with the fluid, by use of the Level I Green-Naghdi theory for the fluid motion and the Kirchhoff thin plate theory for the runway. The coupled fluid structure system, together with the appropriate jump conditions are solved in two-dimensions by the finite-difference method. The numerical model is used to study the nonlinear response of a VLFS to storm waves which are modeled by use of the cnoidal-wave theory. Parametric studies show that the nonlinearity of the waves is very important in accurately predicting the dynamic bending moment and wave run-up on a VLFS in high seas

  17. Fuel dispersal modeling for aircraft-runway impact scenarios

    Energy Technology Data Exchange (ETDEWEB)

    Tieszen, S.R.

    1995-11-01

    A fuel dispersal model for C-141 transport accidents was developed for the Defense Nuclear Agency`s Fuel Fire Technology Base Program to support Weapon System Safety Assessments. The spectrum of accidents resulting from aircraft impact on a runway was divided into three fuel dispersal regimes: low, intermediate, and high-velocity impact. Sufficient data existed in the accident, crash test, and fuel-filled bomb literature to support development of a qualitative framework for dispersal models, but not quantitative models for all regimes. Therefore, a test series at intermediate scale was conducted to generate data on which to base the model for the high-velocity regime. Tests were conducted over an impact velocity range from 12 m/s to 91 m/s and angles of impact from 22.5{degrees} to 67.5{degrees}. Dependent variables were area covered by dispersed fuel, amount of mass in that area, and location of the area relative to the impact line. Test results showed that no liquid pooling occurred for impact velocities greater than 61 m/s, independent of the angle of impact. Some pooling did occur at lower velocities, but in no test was the liquid-layer thickness greater than 5.25 mm.

  18. Experimental rig to estimate the coefficient of friction between tire and surface in airplane touchdown simulations.

    Science.gov (United States)

    Li, Chengwei; Zhan, Liwei

    2015-08-01

    To estimate the coefficient of friction between tire and runway surface during airplane touchdowns, we designed an experimental rig to simulate such events and to record the impact and friction forces being executed. Because of noise in the measured signals, we developed a filtering method that is based on the ensemble empirical mode decomposition and the bandwidth of probability density function of each intrinsic mode function to extract friction and impact force signals. We can quantify the coefficient of friction by calculating the maximum values of the filtered force signals. Signal measurements are recorded for different drop heights and tire rotational speeds, and the corresponding coefficient of friction is calculated. The result shows that the values of the coefficient of friction change only slightly. The random noise and experimental artifact are the major reason of the change.

  19. Can triptans safely be used for airplane headache?

    Science.gov (United States)

    Ipekdal, H Ilker; Karadaş, Ömer; Öz, Oğuzhan; Ulaş, Ümit H

    2011-12-01

    A few cases of airplane headache (AH) have been reported in the literature. Treatment strategies of AHs are also controversial. We followed-up five patients with AH. They were symptom-free during the daytime. Their physical, neurological, and ear-nose-throat examinations were all normal. Blood chemistries, cerebral magnetic resonance imaging, cerebral magnetic resonance imaging angiography, and paranasal sinus tomography studies of the patients were also normal. We preferred triptans because of the possible effect on the mechanism of AH. Patients were recommended to use single-dose of their drugs half an hour prior to flights. All of the patients had a good response to single dose triptan treatment and became headache-free during flights. This is the first study which puts forward the usefulness of the triptans as a safe treatment choice for airplane AH.

  20. Strengthening air traffic safety management by moving from outcome-based towards risk-based evaluation of runway incursions

    International Nuclear Information System (INIS)

    Stroeve, Sybert H.; Som, Pradip; Doorn, Bas A. van; Bakker, G.J.

    2016-01-01

    Current safety management of aerodrome operations uses judgements of severity categories to evaluate runway incursions. Incident data show a small minority of severe incursions and a large majority of less severe incursions. We show that these severity judgements are mainly based upon the outcomes of runway incursions, in particular on the closest distances attained. As such, the severity-based evaluation leads to coincidental safety management feedback, wherein causes and risk implications of runway incursions are not well considered. In this paper we present a new framework for the evaluation of runway incursions, which effectively uses all runway incursions, which judges same types of causes similarly, and which structures causes and risk implications. The framework is based on risks of scenarios associated with the initiation of runway incursions. As a basis an inventory of scenarios is provided, which can represent almost all runway incursions involving a conflict with an aircraft. A main step in the framework is the assessment of the conditional probability of a collision given a runway incursion scenario. This can be effectively achieved for large sets of scenarios by agent-based dynamic risk modelling. The results provide detailed feedback on risks of runway incursion scenarios, thus enabling effective safety management. - Highlights: • Current evaluation of runway incursions is primarily based on their outcomes. • A new framework assesses collision risk given initiation of runway incursions. • Agent-based dynamic risk modelling can evaluate the risks of many scenarios. • A developed scenario inventory can represent almost all runway incursions. • The framework provides detailed feedback to safety management.

  1. Benefits Assessment for Single-Airport Tactical Runway Configuration Management Tool (TRCM)

    Science.gov (United States)

    Oseguera-Lohr, Rosa; Phojanamonogkolkij, Nipa; Lohr, Gary W.

    2015-01-01

    The System-Oriented Runway Management (SORM) concept was developed as part of the Airspace Systems Program (ASP) Concepts and Technology Development (CTD) Project, and is composed of two basic capabilities: Runway Configuration Management (RCM), and Combined Arrival/Departure Runway Scheduling (CADRS). RCM is the process of designating active runways, monitoring the active runway configuration for suitability given existing factors, and predicting future configuration changes; CADRS is the process of distributing arrivals and departures across active runways based on local airport and National Airspace System (NAS) goals. The central component in the SORM concept is a tool for taking into account all the various factors and producing a recommendation for what would be the optimal runway configuration, runway use strategy, and aircraft sequence, considering as many of the relevant factors required in making this type of decision, and user preferences, if feasible. Three separate tools were initially envisioned for this research area, corresponding to the time scale in which they would operate: Strategic RCM (SRCM), with a planning horizon on the order of several hours, Tactical RCM (TRCM), with a planning horizon on the order of 90 minutes, and CADRS, with a planning horizon on the order of 15-30 minutes[1]. Algorithm development was initiated in all three of these areas, but the most fully developed to date is the TRCM algorithm. Earlier studies took a high-level approach to benefits, estimating aggregate benefits across most of the major airports in the National Airspace Systems (NAS), for both RCM and CADRS [2]. Other studies estimated the benefit of RCM and CADRS using various methods of re-sequencing arrivals to reduce delays3,4, or better balancing of arrival fixes5,6. Additional studies looked at different methods for performing the optimization involved in selecting the best Runway Configuration Plan (RCP) to use7-10. Most of these previous studies were high

  2. A Robust Vision-based Runway Detection and Tracking Algorithm for Automatic UAV Landing

    KAUST Repository

    Abu Jbara, Khaled F.

    2015-05-01

    This work presents a novel real-time algorithm for runway detection and tracking applied to the automatic takeoff and landing of Unmanned Aerial Vehicles (UAVs). The algorithm is based on a combination of segmentation based region competition and the minimization of a specific energy function to detect and identify the runway edges from streaming video data. The resulting video-based runway position estimates are updated using a Kalman Filter, which can integrate other sensory information such as position and attitude angle estimates to allow a more robust tracking of the runway under turbulence. We illustrate the performance of the proposed lane detection and tracking scheme on various experimental UAV flights conducted by the Saudi Aerospace Research Center. Results show an accurate tracking of the runway edges during the landing phase under various lighting conditions. Also, it suggests that such positional estimates would greatly improve the positional accuracy of the UAV during takeoff and landing phases. The robustness of the proposed algorithm is further validated using Hardware in the Loop simulations with diverse takeoff and landing videos generated using a commercial flight simulator.

  3. Application of Artificial Neural Network to Predict the use of Runway at Juanda International Airport

    Science.gov (United States)

    Putra, J. C. P.; Safrilah

    2017-06-01

    Artificial neural network approaches are useful to solve many complicated problems. It solves a number of problems in various areas such as engineering, medicine, business, manufacturing, etc. This paper presents an application of artificial neural network to predict a runway capacity at Juanda International Airport. An artificial neural network model of backpropagation and multi-layer perceptron is adopted to this research to learning process of runway capacity at Juanda International Airport. The results indicate that the training data is successfully recognizing the certain pattern of runway use at Juanda International Airport. Whereas, testing data indicate vice versa. Finally, it can be concluded that the approach of uniformity data and network architecture is the critical part to determine the accuracy of prediction results.

  4. Crash Tests of Protective Airplane Floors

    Science.gov (United States)

    Carden, H. D.

    1986-01-01

    Energy-absorbing floors reduce structural buckling and impact forces on occupants. 56-page report discusses crash tests of energy-absorbing aircraft floors. Describes test facility and procedures; airplanes, structural modifications, and seats; crash dynamics; floor and seat behavior; and responses of anthropometric dummies seated in airplanes. Also presents plots of accelerations, photographs and diagrams of test facility, and photographs and drawings of airplanes before, during, and after testing.

  5. Dryden B-52 Launch Aircraft on Edwards AFB Runway

    Science.gov (United States)

    1996-01-01

    NASA's venerable workhorse, the B-52 mothership, rolls out on the Edwards AFB runway after a test flight in 1996. Over the course of more than 40 years, the B-52 launched numerous experimental aircraft, ranging from the X-15 to the X-38, and was also used as a flying testbed for a variety of other research projects. NASA B-52, Tail Number 008, is an air launch carrier aircraft, 'mothership,' as well as a research aircraft platform that has been used on a variety of research projects. The aircraft, a 'B' model built in 1952 and first flown on June 11, 1955, is the oldest B-52 in flying status and has been used on some of the most significant research projects in aerospace history. Some of the significant projects supported by B-52 008 include the X-15, the lifting bodies, HiMAT (highly maneuverable aircraft technology), Pegasus, validation of parachute systems developed for the space shuttle program (solid-rocket-booster recovery system and the orbiter drag chute system), and the X-38. The B-52 served as the launch vehicle on 106 X-15 flights and flew a total of 159 captive-carry and launch missions in support of that program from June 1959 to October 1968. Information gained from the highly successful X-15 program contributed to the Mercury, Gemini, and Apollo human spaceflight programs as well as space shuttle development. Between 1966 and 1975, the B-52 served as the launch aircraft for 127 of the 144 wingless lifting body flights. In the 1970s and 1980s, the B-52 was the launch aircraft for several aircraft at what is now the Dryden Flight Research Center, Edwards, California, to study spin-stall, high-angle-of attack, and maneuvering characteristics. These included the 3/8-scale F-15/spin research vehicle (SRV), the HiMAT (Highly Maneuverable Aircraft Technology) research vehicle, and the DAST (drones for aerodynamic and structural testing). The aircraft supported the development of parachute recovery systems used to recover the space shuttle solid rocket

  6. A novel machine learning model to predict abnormal Runway Occupancy Times and observe related precursors

    NARCIS (Netherlands)

    Herrema, Herrema Floris; Treve, V; Desart, B; Curran, R.; Visser, H.G.

    2017-01-01

    Accidents on the runway triggered the development and implementation of mitigation strategies. Therefore, the airline industry is moving toward proactive risk management, which aims to identify and predict risk percursors and to mitigate risks before accidents occur. For certain predictions Machine

  7. Development of a Bayesian Belief Network Runway Incursion and Excursion Model

    Science.gov (United States)

    Green, Lawrence L.

    2014-01-01

    In a previous work, a statistical analysis of runway incursion (RI) event data was conducted to ascertain the relevance of this data to the top ten Technical Challenges (TC) of the National Aeronautics and Space Administration (NASA) Aviation Safety Program (AvSP). The study revealed connections to several of the AvSP top ten TC and identified numerous primary causes and contributing factors of RI events. The statistical analysis served as the basis for developing a system-level Bayesian Belief Network (BBN) model for RI events, also previously reported. Through literature searches and data analysis, this RI event network has now been extended to also model runway excursion (RE) events. These RI and RE event networks have been further modified and vetted by a Subject Matter Expert (SME) panel. The combined system-level BBN model will allow NASA to generically model the causes of RI and RE events and to assess the effectiveness of technology products being developed under NASA funding. These products are intended to reduce the frequency of runway safety incidents/accidents, and to improve runway safety in general. The development and structure of the BBN for both RI and RE events are documented in this paper.

  8. Comprehensive and Highly Accurate Measurements of Crane Runways, Profiles and Fastenings.

    Science.gov (United States)

    Dennig, Dirk; Bureick, Johannes; Link, Johannes; Diener, Dmitri; Hesse, Christian; Neumann, Ingo

    2017-05-13

    The process of surveying crane runways has been continually refined due to the competitive situation, modern surveying instruments, additional sensors, accessories and evaluation procedures. Guidelines, such as the International Organization for Standardization (ISO) 12488-1, define target values that must be determined by survey. For a crane runway these are for example the span, the position and height of the rails. The process has to be objective and reproducible. However, common processes of surveying crane runways do not meet these requirements sufficiently. The evaluation of the protocols, ideally by an expert, requires many years of experience. Additionally, the recording of crucial parameters, e.g., the wear of the rail, or the condition of the rail fastening and rail joints, is not regulated and for that reason are often not considered during the measurement. To solve this deficit the Advanced Rail Track Inspection System (ARTIS) was developed. ARTIS is used to measure the 3D position of crane rails, the cross-section of the crane rails, joints and, for the first time, the (crane-rail) fastenings. The system consists of a monitoring vehicle and an external tracking sensor. It makes kinematic observations with the tracking sensor from outside the rail run, e.g., the floor of an overhead crane runway, possible. In this paper we present stages of the development process of ARTIS, new target values, calibration of sensors and results of a test measurement.

  9. Effect of multiple path approach procedures on runway landing capacity. [under ILS and MLS conditions

    Science.gov (United States)

    Tosic, V.; Horonjeff, R.

    1976-01-01

    When using the Instrument Landing System (ILS) all aircraft must follow a straight line approach path before landing. The Microwave Landing System (MLS) will allow use of differing curved approach paths. The objective of this research is to find out whether the introduction of MLS and consequently multiple approach paths can bring an increase in runway landing capacity. A model is developed which is capable of computing the expected ultimate landing runway capacity, under ILS and MLS conditions, when aircraft population characteristics and Air Traffic Control separation rules are given. This model can be applied in situations when only a horizontal separation between aircraft approaching a runway is allowed, as well as when both vertical and horizontal separations are possible. Results suggest that an increase in runway landing capacity, caused by introducing the MLS-described multiple approach paths, is to be expected only when an aircraft population consists of aircraft with significantly differing approach velocities and particularly in situations when a vertical separation can be applied.

  10. 76 FR 50706 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-16

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; e-mail: albert.mercado@faa... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  11. 76 FR 50405 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-15

    ...) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...; e-mail: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a notice of... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  12. 78 FR 72834 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2013-12-04

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  13. 76 FR 67341 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-11-01

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  14. 78 FR 25664 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-02

    ...: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA... service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For... specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this...

  15. 77 FR 66762 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ... Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind... service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For... invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed...

  16. 77 FR 40485 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-10

    ...-121-AD; Amendment 39-17108; AD 2012-13-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... ] SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 series airplanes...: 2012-13-06 Airbus: Amendment 39-17108. Docket No. FAA-2012-0040; Directorate Identifier 2011-NM-121-AD...

  17. 77 FR 29207 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-17

    ...-17047; AD 2012-09-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... existing airworthiness directive (AD) for certain Airbus Model A319-111, -112, -113, -114, -115, -131, -132... operational Model A320-111 airplanes in the United States and Airbus intends to remove this model from the...

  18. 14 CFR 125.75 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 125.75 Section 125... OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6... Airplane flight manual. (a) Each certificate holder shall keep a current approved Airplane Flight Manual or...

  19. Error Analysis of Determining Airplane Location by Global Positioning System

    OpenAIRE

    Hajiyev, Chingiz; Burat, Alper

    1999-01-01

    This paper studies the error analysis of determining airplane location by global positioning system (GPS) using statistical testing method. The Newton Rhapson method positions the airplane at the intersection point of four spheres. Absolute errors, relative errors and standard deviation have been calculated The results show that the positioning error of the airplane varies with the coordinates of GPS satellite and the airplane.

  20. 14 CFR 21.5 - Airplane or Rotorcraft Flight Manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane or Rotorcraft Flight Manual. 21.5... CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS General § 21.5 Airplane or Rotorcraft Flight Manual. (a) With each airplane or rotorcraft that was not type certificated with an Airplane or Rotorcraft Flight Manual...

  1. 75 FR 69745 - Aging Airplane Program: Widespread Fatigue Damage

    Science.gov (United States)

    2010-11-15

    ... LOV into the maintenance program for that airplane. Operators may not fly an airplane beyond its LOV... al. Aging Airplane Program: Widespread Fatigue Damage; Final Rule #0;#0;Federal Register / Vol. 75...; Amendment Nos. 25-132, 26-5, 121-351, 129- 48] RIN 2120-AI05 Aging Airplane Program: Widespread Fatigue...

  2. Optimal back-to-front airplane boarding.

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  3. Optimal back-to-front airplane boarding

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  4. An example of applied colour vision research: the conspicuity of airplane colour

    NARCIS (Netherlands)

    Lucassen, M.P.

    2002-01-01

    This paper describes the application of the combined knowledge on colorimetry, colour imaging (visualization) and colour perception in an aviation related research project. It involves the optimisation of the conspicuity of the colour scheme of an airplane, with the purpose of minimizing the changes

  5. Recurring norovirus transmission on an airplane.

    Science.gov (United States)

    Thornley, Craig N; Emslie, Nicola A; Sprott, Tim W; Greening, Gail E; Rapana, Jackie P

    2011-09-01

    Previously reported outbreaks of norovirus gastroenteritis associated with aircraft have been limited to transmission during a single flight sector. During October 2009, an outbreak of diarrhea and vomiting occurred among different groups of flight attendants who had worked on separate flight sectors on the same airplane. We investigated the cause of the outbreak and whether the illnesses were attributable to work on the airplane. Information was obtained from flight attendants on demographic characteristics, symptoms, and possible transmission risk factors. Case patients were defined as flight attendants with diarrhea or vomiting airplane during 13-18 October 2009. Stool samples were tested for norovirus RNA. A passenger had vomited on the Boeing 777-200 airplane on the 13 October flight sector. Sixty-three (82%) of 77 flight attendants who worked on the airplane during 13-18 October provided information, and 27 (43%) met the case definition. The attack rate among flight attendants decreased significantly over successive flight sectors from 13 October onward (P airplane during successive flight sectors. Airlines should make provision for adequate disinfection of airplanes with use of products effective against norovirus and other common infectious agents after vomiting has occurred.

  6. A memetic algorithm to solve the dynamic multiple runway aircraft landing problem

    Directory of Open Access Journals (Sweden)

    Ghizlane Bencheikh

    2016-01-01

    Full Text Available The aircraft landing problem (ALP consists of scheduling the landing of aircrafts onto the available runways in an airport by assigning to each aircraft a landing time and a specific runway while respecting different operational constraints. This is a complex task for the air traffic controller, especially when the flow of aircrafts entering the radar range is continuous and the number of aircrafts is unknown a priori. In this paper, we study the dynamic version of the ALP when new aircrafts appear over time, which means that the landing of the previous aircrafts should be rescheduled. To solve this problem, we propose a memetic algorithm combining an ant colony algorithm and a local heuristic.

  7. An overview of the joint FAA/NASA aircraft/ground runway friction program

    Science.gov (United States)

    Yager, Thomas J.

    1989-01-01

    There is a need for information on runways which may become slippery due to various forms and types of contaminants. Experience has shown that since the beginning of all weather aircraft operations, there have been landing and aborted takeoff incidents and/or accidents each year where aircraft have either run off the end or veered off the shoulder of low friction runways. NASA Langley's Landing and Impact Dynamics Branch is involved in several research programs directed towards obtaining a better understanding of how different tire properties interact with varying pavement surface characteristics to produce acceptable performance for aircraft ground handling requirements. One such effort, which was jointly supported by not only NASA and the FAA but by several aviation industry groups including the Flight Safety Foundation, is described.

  8. Los Angeles International Airport Runway Incursion Studies: Phase III--Center-Taxiway Simulation

    Science.gov (United States)

    Madson, Michael D.

    2004-01-01

    Phase III of the Los Angeles International Airport Runway Incursion Studies was conducted, under an agreement with HNTB Corporation, at the NASA Ames FutureFlight Central (FFC) facility in June 2003. The objective of the study was the evaluation of a new center-taxiway concept at LAX. This study is an extension of the Phase I and Phase II studies previously conducted at FFC. This report presents results from Phase III of the study, in which a center-taxiway concept between runways 25L and 25R was simulated and evaluated. Phase III data were compared objectively against the Baseline data. Subjective evaluations by participating LAX controllers were obtained with regard to workload, efficiency, and safety criteria. To facilitate a valid comparison between Baseline and Phase III data, the same scenarios were used for Phase III that were tested during Phases I and II. This required briefing participating controllers on differences in airport and airline operations between 2001 and today.

  9. 14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.

    Science.gov (United States)

    2010-01-01

    ... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are...-inoperative, en route, net flight path data in the Airplane Flight Manual, allows the airplane to fly from the... Airplane Flight Manual, allows the airplane to fly from the point where the two engines are assumed to fail...

  10. Models for estimating runway landing capacity with Microwave Landing System (MLS)

    Science.gov (United States)

    Tosic, V.; Horonjeff, R.

    1975-01-01

    A model is developed which is capable of computing the ultimate landing runway capacity, under ILS and MLS conditions, when aircraft population characteristics and air traffic control separation rules are given. This model can be applied in situations when only a horizontal separation between aircraft approaching a runway is allowed, as well as when both vertical and horizontal separations are possible. It is assumed that the system is free of errors, that is that aircraft arrive at specified points along the prescribed flight path precisely when the controllers intend for them to arrive at these points. Although in the real world there is no such thing as an error-free system, the assumption is adequate for a qualitative comparison of MLS with ILS. Results suggest that an increase in runway landing capacity, caused by introducing the MLS multiple approach paths, is to be expected only when an aircraft population consists of aircraft with significantly differing approach speeds and particularly in situations when vertical separation can be applied. Vertical separation can only be applied if one of the types of aircraft in the mix has a very steep descent angle.

  11. New Albatross commercial airplane "L 58"

    Science.gov (United States)

    Meyer, G

    1923-01-01

    The "L 58" is a monoplane with cantilever wings joined directly to the fuselage. It accordingly belongs to the new school of airplane construction, as founded and developed in Germany. A list of performance characteristics is included.

  12. 77 FR 51717 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... certain Airbus Model A300 B4-2C, B4-103, and B4- 203 airplanes; and Model A300 B4-601, B4-603, B4-620, B4... this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707...

  13. 78 FR 32345 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ...-17460; AD 2013-10-07] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4-620, B4-605R, and B4-622R airplanes... comments received. Request for a Copy of the Service Information FedEx requested that copies of Airbus...

  14. Factors of airplane engine performance

    Science.gov (United States)

    Gage, Victor R

    1921-01-01

    This report is based upon an analysis of a large number of airplane-engine tests. It contains the results of a search for fundamental relations between many variables of engine operation. The data used came from over 100 groups of tests made upon several engines, primarily for military information. The types of engines were the Liberty 12 and three models of the Hispano-Suiza. The tests were made in the altitude chamber, where conditions simulated altitudes up to about 30,000 feet, with engine speeds ranging from 1,200 to 2,200 r.p.m. The compression ratios of the different engines ranged from under 5 to over 8 to 1. The data taken on the tests were exceptionally complete, including variations of pressure and temperature, besides the brake and friction torques, rates of fuel and air consumption, the jacket and exhaust heat losses.

  15. 77 FR 56991 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-09-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901....mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a supplemental notice of proposed.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  16. 75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-09-28

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  17. Modeling of terminal-area airplane fuel consumption

    Science.gov (United States)

    2009-08-01

    Accurate modeling of airplane fuel consumption is necessary for air transportation policy-makers to properly : adjudicate trades between competing environmental and economic demands. Existing public models used for : computing terminal-area airplane ...

  18. Simulated airplane headache: a proxy towards identification of underlying mechanisms.

    Science.gov (United States)

    Bui, Sebastian Bao Dinh; Petersen, Torben; Poulsen, Jeppe Nørgaard; Gazerani, Parisa

    2017-12-01

    Airplane Headache (AH) occurs during flights and often appears as an intense, short lasting headache during take-off or landing. Reports are limited on pathological mechanisms underlying the occurrence of this headache. Proper diagnosis and treatments would benefit from identification of potential pathways involved in AH pathogenesis. This study aimed at providing a simulated airplane headache condition as a proxy towards identification of its underlying mechanisms. Fourteen participants including 7 volunteers suffering from AH and 7 healthy matched controls were recruited after meeting the diagnostic and safety criteria based on an approved study protocol. Simulation of AH was achieved by entering a pressure chamber with similar characteristics of an airplane flight. Selected potential biomarkers including salivary prostaglandin E 2 (PGE 2 ), cortisol, facial thermo-images, blood pressure, pulse, and saturation pulse oxygen (SPO) were defined and values were collected before, during and after flight simulation in the pressure chamber. Salivary samples were analyzed with ELISA techniques, while data analysis and statistical tests were handled with SPSS version 22.0. All participants in the AH-group experienced a headache attack similar to AH experience during flight. The non-AH-group did not experience any headaches. Our data showed that the values for PGE 2 , cortisol and SPO were significantly different in the AH-group in comparison with the non-AH-group during the flight simulation in the pressure chamber. The pressure chamber proved useful not only to provoke AH-like attack but also to study potential biomarkers for AH in this study. PGE 2 , and cortisol levels together with SPO presented dysregulation during the simulated AH-attack in affected individuals compared with healthy controls. Based on these findings we propose to use pressure chamber as a model to induce AH, and thus assess new potential biomarkers for AH in future studies.

  19. 14 CFR 125.407 - Maintenance log: Airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance log: Airplanes. 125.407 Section... Maintenance log: Airplanes. (a) Each person who takes corrective action or defers action concerning a reported... record the action taken in the airplane maintenance log in accordance with part 43 of this chapter. (b...

  20. 77 FR 69747 - Airworthiness Directives; The Boeing Company Model Airplanes

    Science.gov (United States)

    2012-11-21

    ....'' SWA states that this would eliminate any confusion as to whether the subject inspection is to be done... 737-600 is a next generation (NG) airplane, not a 737 ``Classic'' airplane. Boeing also asked that the.... operators airplanes Various inspections (retained 4 work-hours x $85 per $0 $340 per inspection 296 $100,640...

  1. 14 CFR 121.161 - Airplane limitations: Type of route.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations: Type of route. 121... OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Aircraft Requirements § 121.161 Airplane... specifications, no certificate holder may operate a turbine-engine-powered airplane over a route that contains a...

  2. 14 CFR 121.570 - Airplane evacuation capability.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane evacuation capability. 121.570... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Flight Operations § 121.570 Airplane evacuation capability. (a) No person may cause an airplane carrying passengers to be moved on the surface, take off, or...

  3. 14 CFR 121.303 - Airplane instruments and equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane instruments and equipment. 121.303... Airplane instruments and equipment. (a) Unless otherwise specified, the instrument and equipment... airspeed limitation and item of related information in the Airplane Flight Manual and pertinent placards...

  4. 14 CFR 23.71 - Glide: Single-engine airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Glide: Single-engine airplanes. 23.71... AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Flight Performance § 23.71 Glide: Single-engine airplanes. The maximum horizontal distance traveled in still air, in nautical miles...

  5. 14 CFR 125.91 - Airplane requirements: General.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane requirements: General. 125.91... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements...

  6. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Science.gov (United States)

    2010-01-01

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

  7. 14 CFR 121.141 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 121.141 Section 121... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Manual Requirements § 121.141 Airplane flight manual. (a) Each certificate holder shall keep a current approved airplane flight manual for each type of...

  8. 14 CFR 121.503 - Flight time limitations: Pilots: airplanes.

    Science.gov (United States)

    2010-01-01

    ... Operations § 121.503 Flight time limitations: Pilots: airplanes. (a) A certificate holder conducting supplemental operations may schedule a pilot to fly in an airplane for eight hours or less during any 24... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Flight time limitations: Pilots: airplanes...

  9. 77 FR 36950 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2012-06-20

    ... air turbine, which will supply the airplane systems (including fly-by-wire) with sufficient electrical... Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION... a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X airplanes. The...

  10. Nonlinear analysis of a reactor building for airplane impact loadings

    International Nuclear Information System (INIS)

    Zimmermann, T.; Rodriguez, C.; Rebora, B.

    1981-01-01

    The purpose is to analyze the influence of material nonlinear behavior on the response of a reinforced concrete reactor building and on equipment response for airplane impact loadings. Two analyses are performed: first, the impact of a slow-flying commercial airplane (Boeing 707), then the impact of a fast flying military airplane (Phantom). (orig./HP)

  11. 78 FR 25905 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-03

    ... fly an airplane beyond its LOV, unless an extended LOV is approved. The WFD rule (75 FR 69746... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM... airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating...

  12. 78 FR 13463 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-28

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... published in the Federal Register. That AD applies to certain The Boeing Company Model 757 airplanes. That... repetitive inspections for that windshield. For certain The Boeing Company Model 757 airplanes, AD 2012-25-03...

  13. 77 FR 47267 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final...). ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...). The SNPRM applied to all Boeing Model 747-100B SUD, 747-300, 747-400, and 747-400D series airplanes...

  14. 78 FR 53078 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-28

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for certain The Boeing Company Model 747-200B, -200C, -200F, -300, and 747SR series airplanes... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  15. 78 FR 24673 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for The Boeing Company Model 787-8 airplanes. That AD currently requires modification of the... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  16. 78 FR 27001 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 737-200, -200C, -300, -400, and - 500 series airplanes. That AD currently requires a...: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data...

  17. 78 FR 9 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-02

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 737-300, -400, and -500 series airplanes. That AD currently requires repetitive... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  18. A study of the factors affecting the range of airplanes

    Science.gov (United States)

    Biermann, David

    1937-01-01

    A study was made of the most important factors affecting the range of airplanes. Numerical examples are given showing the effects of different variables on the range of a two-engine airplane. The takeoff problems of long-range airplanes are analyzed.

  19. 77 FR 71357 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2012-11-30

    ... Directives; Pacific Aerospace Limited Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes that... INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room...

  20. Evaluation of two transport aircraft and several ground test vehicle friction measurements obtained for various runway surface types and conditions. A summary of test results from joint FAA/NASA Runway Friction Program

    Science.gov (United States)

    Yager, Thomas J.; Vogler, William A.; Baldasare, Paul

    1990-01-01

    Tests with specially instrumented NASA Boeing 737 and 727 aircraft together with several different ground friction measuring devices were conducted for a variety of runway surface types and conditions. These tests are part of joint FAA/NASA Aircraft/Ground Vehicle Runway Friction Program aimed at obtaining a better understanding of aircraft ground handling performance under adverse weather conditions and defining relationships between aircraft and ground vehicle tire friction measurements. Aircraft braking performance on dry, wet, snow and ice-covered runway conditions is discussed as well as ground vehicle friction data obtained under similar runway conditions. For a given contaminated runway surface condition, the correlation between ground vehicles and aircraft friction data is identified. The influence of major test parameters on friction measurements such as speed, test tire characteristics, type and amount of surface contaminant, and ambient temperature are discussed. The effect of surface type on wet friction levels is also evaluated from comparative data collected on grooved and ungrooved concrete and asphalt surfaces.

  1. 14 CFR 135.422 - Aging airplane inspections and records reviews for multiengine airplanes certificated with nine...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records reviews for multiengine airplanes certificated with nine or fewer passenger seats. 135.422 Section 135.422... Maintenance, and Alterations § 135.422 Aging airplane inspections and records reviews for multiengine...

  2. Aircraft Operations on Repaired Runways (l’Exploitation des Aeronefs sur les Pistes Refaites)

    Science.gov (United States)

    1990-08-01

    MillenI those aspecs haeli c b en rsol~cdl g o n p e sm k tp o rsi etilh r o d c.Tl planning of all the usual features of aircraft trials can gritnd...LATLA NTIQUE NORD) AGARI) Rcport No.731 Report of Working Group 22 of the Structures and Materials Panel Aircraft Operations on Repaired Runways...Codes Avail an~d/orP Dist spe olal Document Reproduced From Best Available Copy This Report was sponsorcdl Iy the Structures ald NIateria s Pancl of

  3. Recycle Runway

    Science.gov (United States)

    Stephens, Pam

    2009-01-01

    Nancy Judd has been called a folk artist, an outsider artist, and a designer--all characterizations that she tends to shirk. Perhaps if labels are needed, environmental artist educator is more appropriate. Judd lives and works in Santa Fe, New Mexico. She dedicates much of her time to creating art that raises public awareness of environmental…

  4. Noise exposure levels from model airplane engines.

    Science.gov (United States)

    Pearlman, R C; Miller, M

    1985-01-01

    Previous research indicates that noise levels from unmuffled model airplane engines produce sufficient noise to cause TTS. The present study explored SPLs of smaller engines under 3.25 cc (.19 cu. in.) and the effectiveness of engine mufflers. Results showed that model airplanes can exceed a widely used damage risk criterion (DRC) but that engine mufflers can reduce levels below DRC. Handling model gasoline engines should be added to the list of recreational activities such as snow-mobile and motorcycle riding, shooting, etc. in which the participant's hearing may be in jeopardy. Suggestions are presented to the model engine enthusiast for avoiding damage to hearing.

  5. Atmospheric electron flux at airplane altitude

    International Nuclear Information System (INIS)

    Enomoto, R.; Chiba, J.; Ogawa, K.; Sumiyoshi, T.; Takasaki, F.; Kifune, T.; Matsubara, Y.; Nishimura, J.

    1991-01-01

    We have developed a new detector to systematically measure the cosmic-ray electron flux at airplane altitudes. We loaded a lead-glass-based electron telescope onto a commercial cargo airplane. The first experiment was carried out using the air route between Narita (Japan) and Sydney (Australia); during this flight we measured the electron flux at various altitudes and latitudes. The thresholds of the electron energies were 1, 2, and 4 GeV. The results agree with a simple estimation using one-dimensional shower theory. A comparison with a Monte Carlo calculation was made

  6. Prioritizing risks via several expert perspectives with application to runway safety

    International Nuclear Information System (INIS)

    Rogerson, Ellen C.; Lambert, James H.

    2012-01-01

    Factor hierarchies have been widely used in the literature to represent the view of an expert of what factors most contribute to reliability or safety. The methods for rating and aggregating the influences across a set of expert-elicited factors to risk or reliability are well known as multiple criteria decision analysis. This paper describes a method for distinguishing levels of risk across a set of locations via the use of multiple factor hierarchies. The method avoids averaging across experts and is thus useful for situations where experts disagree and where an absence of expert consensus on the causative or contributing factors is important information for risk management. A case study demonstrates using seven expert perspectives on the airport-specific factors that can contribute to runway incursions. The results are described for eighty towered airports in the US. The expert perspectives include differing relative emphases across the following set of factors: airport geometry, operations, weather, geography, and days since last safety review. Future work is suggested to include human factors issues as pilot-and-controller communications styles at airports. - Highlights: ► We examine influential factors in seven expert perspectives on the problem domain. ► We assess eighty US airports with qualitative measurement scales for each risk factor. ► Results show robustness and sensitivity of the risk index to expert perspective. ► We examine factors of several types including runway geometry, operations, weather, and geography.

  7. Experimental Investigation of Concrete Runway Snow Melting Utilizing Heat Pipe Technology

    Directory of Open Access Journals (Sweden)

    Fengchen Chen

    2018-01-01

    Full Text Available A full scale snow melting system with heat pipe technology is built in this work, which avoids the negative effects on concrete structure and environment caused by traditional deicing chemicals. The snow melting, ice-freezing performance and temperature distribution characteristics of heat pipe concrete runway were discussed by the outdoor experiments. The results show that the temperature of the concrete pavement is greatly improved with the heat pipe system. The environment temperature and embedded depth of heat pipe play a dominant role among the decision variables of the snow melting system. Heat pipe snow melting pavement melts the snow completely and avoids freezing at any time when the environment temperature is below freezing point, which is secure enough for planes take-off and landing. Besides, the exportation and recovery of geothermal energy indicate that this system can run for a long time. This paper will be useful for the design and application of the heat pipe used in the runway snow melting.

  8. Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

    Directory of Open Access Journals (Sweden)

    Sieradzki Adam

    2016-09-01

    Full Text Available The joined wing concept is an unconventional airplane configuration, known since the mid-twenties of the last century. It has several possible advantages, like reduction of the induced drag and weight due to the closed wing concept. The inverted joined wing variant is its rarely considered version, with the front wing being situated above the aft wing. The following paper presents a performance prediction of the recently optimized configuration of this airplane. Flight characteristics obtained numerically were compared with the performance of two classical configuration airplanes of similar category. Their computational fluid dynamics (CFD models were created basing on available documentation, photographs and some inverse engineering methods. The analysis included simulations performed for a scale of 3-meter wingspan inverted joined wing demonstrator and also for real-scale manned airplanes. Therefore, the results of CFD calculations allowed us to assess the competitiveness of the presented concept, as compared to the most technologically advanced airplanes designed and manufactured to date. At the end of the paper, the areas where the inverted joined wing is better than conventional airplane were predicted and new research possibilities were described.

  9. 77 FR 1622 - Airworthiness Directives; Socata Airplanes

    Science.gov (United States)

    2012-01-11

    ... the FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  10. 77 FR 36125 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2012-06-18

    ... FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  11. 77 FR 14314 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2012-03-09

    ... receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  12. 77 FR 66764 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ... Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton...://www.airbus.com . You may review copies of the referenced service information at the FAA, Transport... the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will...

  13. 14 CFR 129.25 - Airplane security.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane security. 129.25 Section 129.25... security. Foreign air carriers conducting operations under this part must comply with the applicable security requirements in 49 CFR chapter XII. [67 FR 8350, Feb. 22, 2002] ...

  14. 78 FR 25902 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-03

    ... the Alpha Prot of the normal law to activate. Under normal flight conditions (in normal law), if the Alpha Prot activates and Mach number increases, the flight control laws order a pitch down of the... Airplane Flight Manual (AFM) A330 Temporary Revision (TR) TR293 issue 1 and Airbus AFM A340 TR294 issue 1...

  15. 78 FR 1723 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-01-09

    ... Prot of the normal law to activate. Under normal flight conditions (in normal law), if the Alpha Prot activates and Mach number increases, the flight control laws order a pitch down of the airplane that the... Temporary Revision TR286, Issue 1.0, dated December 17, 2012, to advise the flight crew of emergency...

  16. 78 FR 76572 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-18

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...

  17. 76 FR 69168 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-2C, B4-103... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  18. 77 FR 51729 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, A330-300... identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte...

  19. 77 FR 75825 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ...-260-AD; Amendment 39-17293; AD 2012-25-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 and -300 series... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-25-12 Airbus: Amendment 39-17293...

  20. 77 FR 75833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ...-183-AD; Amendment 39-17287; AD 2012-25-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are superseding an existing airworthiness directive (AD) for certain Airbus Model A300 B4-2C... stringer 32 and stringer 33. The subject aeroplane had previously been modified in accordance with Airbus...

  1. 77 FR 70369 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-26

    ...-182-AD; Amendment 39-17266; AD 2012-23-10] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and... Continuing Airworthiness Information (MCAI) states: Two occurrences on Airbus A320 aeroplanes have been...

  2. 77 FR 17327 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2011-1087; Directorate Identifier 2011-NM-032-AD; Amendment 39-16967; AD 2012-04-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...

  3. 77 FR 15644 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-16

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200 and -200... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  4. 77 FR 56172 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-12

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 and -300 series...), 40113, 44701. Sec. 39.13 2. The FAA amends Sec. 39.13 by adding the following new AD: Airbus: Docket No...

  5. 78 FR 22175 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-15

    ...-122-AD; Amendment 39-17408; AD 2013-07-04] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are superseding an existing airworthiness directive (AD) for certain Airbus Model A319, A320... revealed that the installed Tie Down Points of YZ latches on the Cargo Loading System (CLS) of Airbus A319...

  6. 77 FR 19067 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-047-AD; Amendment 39-16992; AD 2012-06-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model... in the AD docket. Relevant Service Information Airbus has issued Mandatory Service Bulletin A320-57...

  7. 77 FR 58785 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4... this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707...

  8. 77 FR 49386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-16

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...

  9. 77 FR 65799 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-245-AD; Amendment 39-17236; AD 2012-21-20] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 freighter...: 2012-21-20 Airbus: Amendment 39-17236. Docket No. FAA-2012-0596; Directorate Identifier 2011-NM-245-AD...

  10. 77 FR 46937 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-001-AD; Amendment 39-17143; AD 2012-15-14] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A300 B4-103, B4-203... the RH and LH MLG rib 5 aft bearing attachment at an early stage, Airbus has developed a new...

  11. 77 FR 57003 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-17

    ...-058-AD; Amendment 39-17189; AD 2012-18-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A318, A319, and A320...: 2012-18-12 Airbus: Amendment 39-17189. Docket No. FAA-2011-1167; Directorate Identifier 2011-NM-058-AD...

  12. 77 FR 73343 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-10

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... holidays. For Airbus service information identified in this proposed AD, contact Airbus SAS-EAW...

  13. 77 FR 19071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-056-AD; Amendment 39-16991; AD 2012-06-10] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model... condition for the specified products. The MCAI states: During structural part assembly in Airbus production...

  14. 77 FR 19059 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-17003; AD 2012-06-22] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... are adopting a new airworthiness directive (AD) for all Airbus Model A340-500 and Model -600 series... the AD docket. Relevant Service Information Airbus has issued Mandatory Service Bulletin A340-57-5029...

  15. 77 FR 42952 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-23

    ...-139-AD; Amendment 39-17127; AD 2012-14-13] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A318-112 and -121... part assembly in Airbus production line, some nuts Part Number (P/N) ASNA2531-4 were found cracked...

  16. 78 FR 29261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-20

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... this proposed AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  17. 77 FR 58789 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter series... this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  18. 77 FR 26996 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A320-214 and-232... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  19. 77 FR 46935 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-210-AD; Amendment 39-17138; AD 2012-15-09] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) certain Airbus Model A310-203, -221, and -222... lives will be published in the Airbus A310 Airworthiness Limitations Section (ALS) Part 1 and bolts must...

  20. 77 FR 59149 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-26

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-600, B4-600R...), 40113, 44701. Sec. 39.13 2. The FAA amends Sec. 39.13 by adding the following new AD: Airbus: Docket No...

  1. 78 FR 32347 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ...-002-AD; Amendment 39-17459; AD 2013-10-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... information: Airbus Mandatory Service Bulletin A330-56-3009, Revision 02, including Appendix 01, dated...

  2. 77 FR 69391 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-19

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model..., contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  3. 77 FR 16492 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318-112, and -121... identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte...

  4. 77 FR 65808 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-202-AD; Amendment 39-17233; AD 2012-21-17] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A320-214 and -232... upper panels on Frame 35 in Airbus A320 final assembly line. Investigations revealed that medium head...

  5. 77 FR 60325 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-03

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) that would supersede an existing AD for certain Airbus Model A318, A319, A320, and A321... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  6. 77 FR 24137 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-23

    ...-16983; AD 2012-06-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... directive (AD) that published in the Federal Register. That AD applies to all Airbus Model A300 B4-600, B4... aluminum high pressure pipe with a new corrosion resistant stainless steel pipe, for all Airbus Model A300...

  7. 77 FR 15291 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-15

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-603, B4-605R, and..., except Federal holidays. For service information identified in this proposed AD, contact Airbus SAS--EAW...

  8. 76 FR 68671 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-07

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300...., Monday through Friday, except Federal holidays. For Airbus service information identified in this...

  9. 77 FR 65812 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-240-AD; Amendment 39-17235; AD 2012-21-19] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 freighter series... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-21-19 Airbus: Amendment 39-17235...

  10. 76 FR 72350 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-23

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model..., contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  11. 77 FR 29210 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-17

    ...-091-AD; Amendment 39-17048; AD 2012-09-13] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 freighter.... ] Changes to the AD Airbus has issued Mandatory Service Bulletins A330-32-3241 and A340-32-4282, both...

  12. 78 FR 52405 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-23

    ...-187-AD; Amendment 39-17549; AD 2013-16-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-300, A340-200...: 2013-16-11 Airbus: Amendment 39-17549. Docket No. FAA-2013-0335; Directorate Identifier 2012-NM-187-AD...

  13. 77 FR 11793 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-28

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-103, B4-203..., except Federal holidays. For service information identified in this proposed AD, contact Airbus SAS--EAW...

  14. 77 FR 26998 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-243, -243F, -342..., between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For Airbus service information...

  15. 77 FR 46929 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-17145; AD 2011-19-01 R1] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal... existing airworthiness directive (AD) that applies to all Airbus Model A318, A319, A320, and A321 series..., 2011), and adding the following new AD: 2011-19-01 R1 Airbus: Amendment 39-17145; Docket No. FAA-2012...

  16. 77 FR 60331 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-03

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318, A319, A320, and... information identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice...

  17. 77 FR 65146 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-25

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, -200..., contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  18. 77 FR 24833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-26

    ...: Hydraulic Power. (e) Reason This AD was prompted by a report of an electrical arc and hydraulic haze in the...)(1) and (g)(2) of this AD. (1) Install in the cockpit on the hydraulic power overhead panel 427VU, a... Airbus Model A310 series airplanes. This AD was prompted by a report of an electrical arc and hydraulic...

  19. Radiation exposure of airplane crews. Exposure levels

    International Nuclear Information System (INIS)

    Bergau, L.

    1995-01-01

    Even at normal height levels of modern jet airplanes, the flying crew is exposed to a radiation level which is higher by several factors than the terrestrial radiation. There are several ways in which this can be hazardous; the most important of these is the induction of malignant growths, i.e. tumours. (orig./MG) [de

  20. Oblique-Flying-Wing Supersonic Transport Airplane

    Science.gov (United States)

    Van Der Velden, Alexander J. M.

    1992-01-01

    Oblique-flying-wing supersonic airplane proposed as possible alternative to B747B (or equivalent). Tranports passengers and cargo as fast as twice speed of sound at same cost as current subsonic transports. Flies at same holding speeds as present supersonic transports but requires only half takeoff distance.

  1. Flying spin qualities testing of airplane

    Directory of Open Access Journals (Sweden)

    Kostić Čedomir J.

    2015-01-01

    Full Text Available In this paper is presented the theoretical analysis of origins and characteristics of spinning motion. There are precise explanation of every stage spin flight and basic meaning of notion. Personated equation of motion in spin and equitation of motion airplane in settled spin motion, analysis of them and general recommendation for pilots for recovering from spins. Introduced in valid military and civil specifications flight test demonstration requirements for departure resistance and flying stall and spin qualities testing of airplane. Special attention was given on predicting departure, stall and spin susceptibility and theoretical analysis in the name of magnify flight testing security. There are explanation of test equipment and methodology of flying qualities testing of airplanes. Like a support of this theme are described method and results of flight stall and spin qualities testing of airplane G-4(N-62 super see-gull with precise recommendation for pilots for recovering from spins, from TOC SLI VS (Technical testing center, department for fight testing Air Force of Serbia.

  2. Developing aircraft photonic networks for airplane systems

    DEFF Research Database (Denmark)

    White, Henry J.; Brownjohn, Nick; Baptista, João

    2013-01-01

    Achieving affordable high speed fiber optic communication networks for airplane systems has proved to be challenging. In this paper we describe a summary of the EU Framework 7 project DAPHNE (Developing Aircraft Photonic Networks). DAPHNE aimed to exploit photonic technology from terrestrial...

  3. 76 FR 73496 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-29

    ... tests, cracks appeared on the right (RH) and left (LH) sides between the crossing area of the keel beam... AD; except for airplanes on which a crack was detected at hole 5 before oversizing of the keel beam... aeroplanes fatigue tests, cracks appeared on the right (RH) and left (LH) sides between the crossing area of...

  4. 77 FR 26937 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... penetrating through the rear spar and into a fuel tank, consequent fuel loss, and reduced structural integrity... tank, consequent fuel loss, and reduced structural integrity of the airplane. (f) Compliance You are... fittings at the lower flange, and repair if necessary; and provides an optional spot-facing modification...

  5. Real-time terminal area trajectory planning for runway independent aircraft

    Science.gov (United States)

    Xue, Min

    The increasing demand for commercial air transportation results in delays due to traffic queues that form bottlenecks along final approach and departure corridors. In urban areas, it is often infeasible to build new runways, and regardless of automation upgrades traffic must remain separated to avoid the wakes of previous aircraft. Vertical or short takeoff and landing aircraft as Runway Independent Aircraft (RIA) can increase passenger throughput at major urban airports via the use of vertiports or stub runways. The concept of simultaneous non-interfering (SNI) operations has been proposed to reduce traffic delays by creating approach and departure corridors that do not intersect existing fixed-wing routes. However, SNI trajectories open new routes that may overfly noise-sensitive areas, and RIA may generate more noise than traditional jet aircraft, particularly on approach. In this dissertation, we develop efficient SNI noise abatement procedures applicable to RIA. First, we introduce a methodology based on modified approximated cell-decomposition and Dijkstra's search algorithm to optimize longitudinal plane (2-D) RIA trajectories over a cost function that minimizes noise, time, and fuel use. Then, we extend the trajectory optimization model to 3-D with a k-ary tree as the discrete search space. We incorporate geography information system (GIS) data, specifically population, into our objective function, and focus on a practical case study: the design of SNI RIA approach procedures to Baltimore-Washington International airport. Because solutions were represented as trim state sequences, we incorporated smooth transition between segments to enable more realistic cost estimates. Due to the significant computational complexity, we investigated alternative more efficient optimization techniques applicable to our nonlinear, non-convex, heavily constrained, and discontinuous objective function. Comparing genetic algorithm (GA) and adaptive simulated annealing (ASA

  6. Experiment Description and Results for Arrival Operations Using Interval Management with Spacing to Parallel Dependent Runways (IMSPiDR)

    Science.gov (United States)

    Baxley, Brian T.; Murdoch, Jennifer L.; Swieringa, Kurt A.; Barmore, Bryan E.; Capron, William R.; Hubbs, Clay E.; Shay, Richard F.; Abbott, Terence S.

    2013-01-01

    The predicted increase in the number of commercial aircraft operations creates a need for improved operational efficiency. Two areas believed to offer increases in aircraft efficiency are optimized profile descents and dependent parallel runway operations. Using Flight deck Interval Management (FIM) software and procedures during these operations, flight crews can achieve by the runway threshold an interval assigned by air traffic control (ATC) behind the preceding aircraft that maximizes runway throughput while minimizing additional fuel consumption and pilot workload. This document describes an experiment where 24 pilots flew arrivals into the Dallas Fort-Worth terminal environment using one of three simulators at NASA?s Langley Research Center. Results indicate that pilots delivered their aircraft to the runway threshold within +/- 3.5 seconds of their assigned time interval, and reported low workload levels. In general, pilots found the FIM concept, procedures, speeds, and interface acceptable. Analysis of the time error and FIM speed changes as a function of arrival stream position suggest the spacing algorithm generates stable behavior while in the presence of continuous (wind) or impulse (offset) error. Concerns reported included multiple speed changes within a short time period, and an airspeed increase followed shortly by an airspeed decrease.

  7. Use of Data Comm by Flight Crew to Conduct Interval Management Operations to Parallel Dependent Runways

    Science.gov (United States)

    Baxley, Brian T.; Hubbs, Clay; Shay, Rick; Karanian, James

    2011-01-01

    The Interval Management (IM) concept is being developed as a method to maintain or increase high traffic density airport arrival throughput while allowing aircraft to conduct near idle thrust descents. The Interval Management with Spacing to Parallel Dependent Runways (IMSPiDR1) experiment at NASA Langley Research Center used 24 commercial pilots to examine IM procedures to conduct parallel dependent runway arrival operations while maintaining safe but efficient intervals behind the preceding aircraft. The use of IM procedures during these operations requires a lengthy and complex clearance from Air Traffic Control (ATC) to the participating aircraft, thereby making the use of Controller Pilot Data Link Communications (CPDLC) highly desirable as the communication method. The use of CPDLC reduces the need for voice transmissions between controllers and flight crew, and enables automated transfer of IM clearance elements into flight management systems or other aircraft avionics. The result is reduced crew workload and an increase in the efficiency of crew procedures. This paper focuses on the subset of data collected related to the use of CPDLC for IM operations into a busy airport. Overall, the experiment and results were very successful, with the mean time under 43 seconds for the flight crew to load the clearance into the IM spacing tool, review the calculated speed, and respond to ATC. An overall mean rating of Moderately Agree was given when the crews were asked if the use of CPDLC was operationally acceptable as simulated in this experiment. Approximately half of the flight crew reported the use of CPDLC below 10,000 for IM operations was unacceptable, with 83% reporting below 5000 was unacceptable. Also described are proposed modifications to the IM operations that may reduce CPDLC Respond time to less than 30 seconds and should significantly reduce the complexity of crew procedures, as well as follow-on research issues for operational use of CPDLC during IM

  8. 76 FR 35344 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-06-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901.... Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  9. 76 FR 3854 - Airworthiness Directives; REIMS AVIATION S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-01-21

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  10. 78 FR 21700 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2013-04-11

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) Transportation Airplane and Engine (TAE) Subcommittee to discuss transport airplane and engine issues. DATES: The...

  11. 78 FR 27005 - Airworthiness Directives; Revo, Incorporated Airplanes

    Science.gov (United States)

    2013-05-09

    ..., Incorporated Models COLONIAL C-1, COLONIAL C-2, LAKE LA-4, LAKE LA-4A, LAKE LA-4P, and LAKE LA-4-200 airplanes... LA-4A, LAKE LA-4P, and LAKE LA-4-200 airplanes, all serial numbers, that are certificated in any...-4P, and LAKE LA-4-200 airplanes: Within the next 25 hours TIS after July 8, 2005 (the effective date...

  12. 78 FR 61161 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-03

    ... new airworthiness directive (AD) for certain The Boeing Company Model DC-10-10 and MD-10-10F airplanes... reinstallation of a reduced life bolt on other Model DC-10-10 and MD-10-10 airplanes. Subsequent paragraphs have...) Applicability This AD applies to The Boeing Company Model DC-10-10 and MD-10- 10F airplanes, certificated in any...

  13. 75 FR 16660 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-04-02

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  14. 77 FR 16430 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ...-104-AD; Amendment 39-16983; AD 2012-06-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... use of Airbus SB A310- ] 52-2067 and Airbus SB A300-52-6065 at original issue is acceptable to comply...

  15. 77 FR 26154 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-03

    ...-167-AD; Amendment 39-17037; AD 2012-09-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 B2-1C, B2K-3C, B2... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-09-02 Airbus: Amendment 39-17037...

  16. Airplane impact on nuclear power plants

    International Nuclear Information System (INIS)

    Eibl, J.

    2003-01-01

    A short report on investigations of nuclear power plants under airplane attack is given. It concerns the modeling of planes with regard to mass and stiffness, the relevant plane velocity and finally the determination of load-time functions. The necessary analysis of the concrete containment structure is shortly addressed. Finally a proposal for a structure to keep planes from such building structures is discussed. (author)

  17. Advanced Subsonic Airplane Design and Economic Studies

    Science.gov (United States)

    Liebeck, Robert H.; Andrastek, Donald A.; Chau, Johnny; Girvin, Raquel; Lyon, Roger; Rawdon, Blaine K.; Scott, Paul W.; Wright, Robert A.

    1995-01-01

    A study was made to examine the effect of advanced technology engines on the performance of subsonic airplanes and provide a vision of the potential which these advanced engines offered. The year 2005 was selected as the entry-into-service (EIS) date for engine/airframe combination. A set of four airplane classes (passenger and design range combinations) that were envisioned to span the needs for the 2005 EIS period were defined. The airframes for all classes were designed and sized using 2005 EIS advanced technology. Two airplanes were designed and sized for each class: one using current technology (1995) engines to provide a baseline, and one using advanced technology (2005) engines. The resulting engine/airframe combinations were compared and evaluated on the basis on sensitivity to basic engine performance parameters (e.g. SFC and engine weight) as well as DOC+I. The advanced technology engines provided significant reductions in fuel burn, weight, and wing area. Average values were as follows: reduction in fuel burn = 18%, reduction in wing area = 7%, and reduction in TOGW = 9%. Average DOC+I reduction was 3.5% using the pricing model based on payload-range index and 5% using the pricing model based on airframe weight. Noise and emissions were not considered.

  18. 77 FR 1 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-01-03

    ... airplane, this AD states not to install a separation bolt having P/N 7292520-678 on any airplane as of the... United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section... government and the States, or on the distribution of power and responsibilities among the various levels of...

  19. 77 FR 66417 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-11-05

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 [[Page 66418...: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  20. 77 FR 16488 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-03-21

    ...-100, DHC-8-200, and DHC-8-300 series airplanes. This proposed AD was prompted by reports of hydraulic... caps, which could result in loss of the number 2 hydraulic system and damage to airplane structures... the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will...

  1. Variable-Structure Control of a Model Glider Airplane

    Science.gov (United States)

    Waszak, Martin R.; Anderson, Mark R.

    2008-01-01

    A variable-structure control system designed to enable a fuselage-heavy airplane to recover from spin has been demonstrated in a hand-launched, instrumented model glider airplane. Variable-structure control is a high-speed switching feedback control technique that has been developed for control of nonlinear dynamic systems.

  2. 77 FR 21426 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  3. 78 FR 49217 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ...-1069; Directorate Identifier 2012-NM-044-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... directive (AD), for all The Boeing Company Model 727 airplanes, which proposed to supersede an existing AD... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  4. 77 FR 49708 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-17

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  5. 78 FR 27010 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... certain The Boeing Company Model 737-100, -200, -200C, - 300, -400, and -500 series airplanes. Those ADs..., December 18, 2000). ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  6. 78 FR 26286 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-06

    ...-0425; Directorate Identifier 2011-NM-273-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... directive (AD) for all The Boeing Company Model 717-200 airplanes. That NPRM proposed requiring repetitive... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  7. 78 FR 52836 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  8. 78 FR 27020 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are revising an existing airworthiness directive (AD) for all The Boeing... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...

  9. 78 FR 3365 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-16

    ...-1317; Directorate Identifier 2011-NM-194-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Airplanes... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  10. 78 FR 78701 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  11. 78 FR 57542 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-19

    ...-0789; Directorate Identifier 2013-NM-127-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 777-200 and -300 series airplanes. AD 2012-12-08 requires an inspection for the part... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  12. 78 FR 73739 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-09

    ...-0981; Directorate Identifier 2013-NM-032-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... all The Boeing Company Model MD-90- 30 airplanes. AD 97-11-07 and AD 99-18-23 currently require... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  13. 77 FR 24835 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  14. 77 FR 48423 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-14

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...

  15. 77 FR 63714 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-17

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  16. 78 FR 15332 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to all The Boeing Company Model 737-300, -400, and - 500 series airplanes. The... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  17. 78 FR 28128 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-05-14

    ... Airworthiness Directives; the Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  18. 77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-04

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to certain The Boeing Company Model 737-200, -200C, - 300, and -400 series... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  19. 77 FR 40307 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 747-400... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC...

  20. 78 FR 57049 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-09-17

    ... Airworthiness Directives; the Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes...

  1. 77 FR 59728 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-01

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model DC-10-10, DC-10-10F, DC-10-15, DC- 10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood...

  2. 78 FR 68693 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-11-15

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  3. 77 FR 12166 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-29

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...; email [email protected]boeing.com ; Internet https://www.myboeingfleet.com . You may review copies of the...

  4. 77 FR 33619 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 767-200, -300, and -400ER series airplanes. That AD currently requires replacing the... FR 8717, February 26, 2009). ADDRESSES: For service information identified in this AD, contact Boeing...

  5. 78 FR 11972 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-21

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  6. 77 FR 24355 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-24

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  7. 78 FR 49229 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ...-0690; Directorate Identifier 2013-NM-088-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 737-600, -700, - 700C, and -800 series airplanes. AD 2009-24-07 currently requires... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  8. 77 FR 61731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to all The Boeing Company Model 727 airplanes. The existing AD currently... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  9. 78 FR 78703 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  10. 77 FR 21429 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  11. 78 FR 40060 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0468; Directorate Identifier 2012-NM-147-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce engines. The existing AD... identified in this AD, Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  12. 78 FR 46532 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0616; Directorate Identifier 2007-NM-353-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... directive (AD) for all The Boeing Company Model 767 airplanes. That NPRM proposed to require repetitive... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA...

  13. 77 FR 5386 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-03

    ... airplanes. The airplane manufacturer name stated in the subject line, product identification section, and..., 2011), currently requires repetitive inspections for cracking on the lower cap of the rear spar of the..., product identification section, and paragraph (c) of AD 2011-24-04, Amendment 39-16868 (76 FR 73491...

  14. Topological estimation of aerodynamic controlled airplane system functionality of quality

    Directory of Open Access Journals (Sweden)

    С.В. Павлова

    2005-01-01

    Full Text Available  It is suggested to use topological methods for stage estimation of aerodynamic airplane control in widespread range of its conditions The estimation is based on normalized stage virtual non-isotropy of configurational airplane systems calculation.

  15. 77 FR 55773 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-11

    ... loss of control of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these... horizontal stabilizer to sustain the required limit loads and consequent loss of control of the airplane. (f...

  16. 77 FR 31758 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2012-05-30

    ... the loss of automatic speed control, and consequent loss of control of the airplane. Since the... are reopening the comment period to allow the public the chance to comment on this proposed change... and the loss of automatic speed control, and may lead to loss of control of the airplane.'' Boeing...

  17. DETERMINATION OF PARASITE DRAG FOR COMMERCIAL AIRPLANE AT TRANSONIC SPEEDS

    OpenAIRE

    V. I. Shevyakov

    2014-01-01

    It considers the task of determination of parasite drag for subsonic commercial airplane on the base of theoretical calculation procedures. It contains the procedure for clarification of empirical approach to calculation of parasite drag at high speeds. It provides examples of calculation of parasite drag at transonic speeds as a result of step behind the slat on the wing of commercial airplane.

  18. 78 FR 71989 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-02

    ... of the forward engine mount, and could result in separation of an engine under power from the... in separation of an engine under power from the airplane, and consequent loss of control of the... engine mount, and could result in separation of an engine under power from the airplane and consequent...

  19. Flight Research using Radio-controlled Small Airplanes 5 -6 ...

    Indian Academy of Sciences (India)

    To generate aerodynamic data on small airplane configurations, six-component strain gauge balances of appropriate ratings have been developed for use in the 2.75x4.25 m low speed wind. tunneJl at IISc (Figures 12-14). The balances are suitable for full scale tests of the above research airplanes with the power plant.

  20. 77 FR 42956 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-07-23

    ... (CRJ) aeroplanes, resulting in loss of the associated hydraulic system and high-energy impact damage to... DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. This AD was prompted by reports of hydraulic..., which could result in loss of the number 2 hydraulic system and damage to airplane structures, and could...

  1. 78 FR 17290 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-21

    ... the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW... Airworthiness Limitations section of the Instructions for Continued Airworthiness. Comments We gave the public... to exclude airplanes with Airline Information Management System (AIMS) V1 installed from the...

  2. 78 FR 30243 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes

    Science.gov (United States)

    2013-05-22

    ... Directives; Eclipse Aerospace, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... all Eclipse Aerospace, Inc. Model EA500 airplanes equipped with Avio, Avio with ETT, or Avio NG 1.0... identified in this proposed AD, contact Eclipse Aerospace, Inc. 26 East Palatine Road, Wheeling, Illinois...

  3. 76 FR 55614 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2011-09-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Pacific Aerospace... (AD) for Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes modified with an unapproved... INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room...

  4. 14 CFR 91.605 - Transport category civil airplane weight limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Transport category civil airplane weight... civil airplane weight limitations. (a) No person may take off any transport category airplane (other than a turbine-engine-powered airplane certificated after September 30, 1958) unless— (1) The takeoff...

  5. 14 CFR 121.1105 - Aging airplane inspections and records reviews.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records... Improvements § 121.1105 Aging airplane inspections and records reviews. (a) Applicability. This section applies to all airplanes operated by a certificate holder under this part, except for those airplanes...

  6. 14 CFR Appendix D to Part 135 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ... airplanes with non-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D.... D Appendix D to Part 135—Airplane Flight Recorder Specification Parameters Range Accuracy sensor...

  7. 14 CFR Appendix D to Part 125 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ... airplanes with non-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD...

  8. Class 2 design update for the family of commuter airplanes

    Science.gov (United States)

    Creighton, Thomas R.; Hendrich, Louis J.

    1987-01-01

    This is the final report of seven on the design of a family of commuter airplanes. This design effort was performed in fulfillment of NASA/USRA grant NGT-8001. Its contents are as follows: (1) the class 1 baseline designs for the commuter airplane family; (2) a study of takeoff weight penalties imposed on the commuter family due to implementing commonality objectives; (3) component structural designs common to the commuter family; (4) details of the acquisition and operating economics of the commuter family, i.e., savings due to production commonality and handling qualities commonality are determined; (5) discussion of the selection of an advanced turboprop propulsion system for the family of commuter airplanes, and (6) a proposed design for an SSSA controller design to achieve similar handling for all airplanes. Final class 2 commuter airplane designs are also presented.

  9. 75 FR 46868 - Airworthiness Directives; The Boeing Company Model 747 Airplanes and Model 767 Airplanes Equipped...

    Science.gov (United States)

    2010-08-04

    .... ADDRESSES: You may send comments by any of the following methods: Federal eRulemaking Portal: Go to http... Global Supply Systems (Global) requests that we revise AD 2007-12- 07, Amendment 39-15085 (72 FR 31174... airplanes. Global explains that GE has two engine software revisions to the EEC bleed scheduling, which...

  10. 14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...

    Science.gov (United States)

    2010-01-01

    ... in the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Large transport category airplanes: Turbine...

  11. Flying Airplanes: Realizing Circadian Effects (FARCE)

    OpenAIRE

    David L. Dickinson; Todd McElroy

    2009-01-01

    People differ in their diurnal (time-of-day) preferences—some are morning-types and others are evening-types. These differences are explored in a unique experiment design in which subjects are randomly assigned to produce paper airplanes at either 8:00 a.m. or 10:00 p.m. Our results show that evening-types at their more optimal time-of-day (10:00 p.m.) produce planes that fly statistically significantly farther than those produced by morning-types at their more optimal time-of-day (8:00 a.m.)...

  12. Practical method for balancing airplane moments

    Science.gov (United States)

    Hamburger, H

    1924-01-01

    The present contribution is the sequel to a paper written by Messrs. R. Fuchs, L. Hopf, and H. Hamburger, and proposes to show that the methods therein contained can be practically utilized in computations. Furthermore, the calculations leading up to the diagram of moments for three airplanes, whose performance in war service gave reason for complaint, are analyzed. Finally, it is shown what conclusions can be drawn from the diagram of moments with regard to the defects in these planes and what steps may be taken to remedy them.

  13. Simulation of Dynamics of a Flexible Miniature Airplane

    Science.gov (United States)

    Waszak, Martin R.

    2005-01-01

    A short report discusses selected aspects of the development of the University of Florida micro-aerial vehicle (UFMAV) basically, a miniature airplane that has a flexible wing and is representative of a new class of airplanes that would operate autonomously or under remote control and be used for surveillance and/or scientific observation. The flexibility of the wing is to be optimized such that passive deformation of the wing in the presence of aerodynamic disturbances would reduce the overall response of the airplane to disturbances, thereby rendering the airplane more stable as an observation platform. The aspect of the development emphasized in the report is that of computational simulation of dynamics of the UFMAV in flight, for the purpose of generating mathematical models for use in designing control systems for the airplane. The simulations are performed by use of data from a wind-tunnel test of the airplane in combination with commercial software, in which are codified a standard set of equations of motion of an airplane, and a set of mathematical routines to compute trim conditions and extract linear state space models.

  14. Fuzzy Logic Decoupled Longitudinal Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1996-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control difference airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control throttle position and another to control elevator position. These two controllers were used to control flight path angle and airspeed for both a piston powered single engine airplane simulation and a business jet simulation. Overspeed protection and stall protection were incorporated in the form of expert systems supervisors. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic longitudinal controller could be successfully used on two general aviation aircraft types that have very difference characteristics. These controllers worked for both airplanes over their entire flight envelopes including configuration changes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle lever travel, etc.). The controllers also handled configuration changes without mode switching or knowledge of the current configuration. This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  15. Fuzzy Logic Decoupled Lateral Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1997-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control different airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control aileron or roll spoiler position. This controller was used to control bank angle for both a piston powered single engine aileron equipped airplane simulation and a business jet simulation which used spoilers for primary roll control. Overspeed, stall and overbank protection were incorporated in the form of expert systems supervisors and weighted fuzzy rules. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic lateral controller could be successfully used on two general aviation aircraft types that have very different characteristics. These controllers worked for both airplanes over their entire flight envelopes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle ]ever travel, etc.). This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  16. In the Field Application of a New Sensor for Monitoring Road and Runway Surfaces

    Directory of Open Access Journals (Sweden)

    Amedeo TROIANO

    2011-02-01

    Full Text Available Water and ice detection over road and runway surfaces is important to improve traffic safety and to reduce maintenance costs. An innovative low cost capacitive sensor was developed to estimate the dry, wet, or icy state of surfaces. The reliability and repeatability of the indications of the sensor were investigated in a previous work based on simulations and experiments in laboratory, together with a preliminary short test in the field. This work is devoted to the study of the indications of 4 sensors (standard or bituminized during continuous data acquisition in the field (at the Turin Airport lasted 8 months. The indications of different sensors were highly correlated. As one important problem when measuring in the field is due to dirt and salt spread over the road, a preliminary study on the effect of different salt concentrations in the water covering the surface of the sensor was performed. Both simulations and laboratory tests showed that the sensor is not affected by the presence of salt in the water. Considering data measured in the field, the estimated condition of the road provided by the sensors was found to be consistent with the METAR (METeorological Aerodrome Report message of the Turin Airport, for the whole period of investigation. Correlation was found between data from the sensors and rain, fog, and snowfall. The beginning formation of ice identified by the sensor was found to be in some agreement with the indication of a mathematical model of ice prediction from meteorological data. The possibility of using the indications of the sensor together with weather data to train an algorithm providing a more precise prediction of ice formation is discussed.

  17. Images

    Data.gov (United States)

    National Aeronautics and Space Administration — Images for the website main pages and all configurations. The upload and access points for the other images are: Website Template RSW images BSCW Images HIRENASD...

  18. Rapid Airplane Parametric Input Design(RAPID)

    Science.gov (United States)

    Smith, Robert E.; Bloor, Malcolm I. G.; Wilson, Michael J.; Thomas, Almuttil M.

    2004-01-01

    An efficient methodology is presented for defining a class of airplane configurations. Inclusive in this definition are surface grids, volume grids, and grid sensitivity. A small set of design parameters and grid control parameters govern the process. The general airplane configuration has wing, fuselage, vertical tail, horizontal tail, and canard components. The wing, tail, and canard components are manifested by solving a fourth-order partial differential equation subject to Dirichlet and Neumann boundary conditions. The design variables are incorporated into the boundary conditions, and the solution is expressed as a Fourier series. The fuselage has circular cross section, and the radius is an algebraic function of four design parameters and an independent computational variable. Volume grids are obtained through an application of the Control Point Form method. Grid sensitivity is obtained by applying the automatic differentiation precompiler ADIFOR to software for the grid generation. The computed surface grids, volume grids, and sensitivity derivatives are suitable for a wide range of Computational Fluid Dynamics simulation and configuration optimizations.

  19. Outside scene obscuration by a millimeter-wave radar image presented on a HUD

    Science.gov (United States)

    Huntoon, Richard B.; Rand, Timothy W.; Lapis, Mary Beth

    1995-06-01

    We investigated whether a raster image on a Head-Up Display (HUD) might interfere with runway recognition during a low-visibility (CAT II and IIIa) approach. The primary reason for incorporating a HUD into the flight deck is to allow the pilot to observe instrument information while maintaining a view of the outside scene. The raster image could, however, obscure the outside scene, leaving the pilot unaware that the approach or runway lights are visible. In our HUD lab, twenty-one subjects were asked to observe a simulated outside scene through a HUD and indicate when they first saw runway approach lights. Each subject was presented 12 data runs with a simulated 35-GHz raster radar image and stroke symbology simultaneously presented on the HUD, and 12 data runs with only stroke symbology on the HUD. Each run was conducted under simulated fog conditions of either 700-ft Runway Visual Range (RVR) or 1200-ft RVR. We found that the presence of the radar image decreased the recognition range by 24 percent (z equals 5.71, p < 0.001). Subjective comments by the study participants show that the radar serves as a valuable aid in confirming flight path alignment with the runway under low-visibility conditions.

  20. Data Analysis Of A Coastal Zone Remote Sensing Campaign By The Nasa C130 Airplane

    Science.gov (United States)

    Pippi, I.; Radicati, B.

    1988-01-01

    The principal goal of most of our remote sensing campaigns has been the choice of the best airborne sensors and the selection of the most efficient visible and infrared wavelengths for the remote sensing of the Italian coastal zone. The "1986 C130 European Program" was performed by NASA C130 airplane last summer. In this contest on 30th July a flight over the Tuscan islands and coast was performed. The airplane was equipped with the following main sensors: a Thematic Mapper Simulator (TMS), a Thermal Infrared Multispectral Scanner (TIMS) and an Airborne Imaging Spectrometer (AIS). The images acquired, were firstly corrected for the several types of instrumental noise and errors and after that were correlated with the flight parameters and geometrically corrected. Finally the data were reduced to physical units taking into account the sensors calibration. Particular attention was also paid to the atmospheric effects taken into account by the use of the spectral results of the computer program LOWTRAN-6. First results on sea temperature detection, especially near river or channel estuaries, were reported. At the same time comparison between the thermal infrared channel of the TMS and those of THIS was performed. In addition studies are being made on the relationships among chlorophyll, plankton, yellow substance, oil at sea, total suspended matter, fluorescence and sea color. On that basis, combining the bands of the TMS, tentative image processing is being performed to determinate alga and dissolved organic materials covering.

  1. 77 FR 32889 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-04

    ... trunnion lower housing of the main landing gear (MLG), which could result in an incorrect MLG emergency... pins of the left and right MLG forward trunnion lower housing to verify that the cross bolts are... pins could also result in a possible landing gear collapse causing a runway excursion during take-off...

  2. 78 FR 44871 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-07-25

    ...;Prices of new books are listed in the first FEDERAL REGISTER issue of each #0;week. #0; #0; #0; #0;#0... in Renton, Washington, on July 11, 2013. Jeffrey E. Duven, Acting Manager, Transport Airplane...

  3. 76 FR 4216 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-01-25

    ..., call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  4. 75 FR 89 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-01-04

    ... after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  5. 75 FR 52480 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-08-26

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  6. 75 FR 30272 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-06-01

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  7. 76 FR 30295 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-05-25

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  8. 75 FR 13239 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-03-19

    ... receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  9. 75 FR 71536 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-11-24

    ... of this material at the FAA, call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  10. Reversible cerebral vasoconstriction syndrome precipitated by airplane descent: Case report.

    Science.gov (United States)

    Hiraga, Akiyuki; Aotsuka, Yuya; Koide, Kyosuke; Kuwabara, Satoshi

    2017-10-01

    Background Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by segmental vasospasm. Vasoactive agents and childbirth have been reported as precipitating factors for RCVS; however, RCVS induced by altitude change or air travel has rarely been reported. Case We present a case of a 74-year-old woman who presented with thunderclap headache during airplane descent. Magnetic resonance angiography demonstrated segmental vasoconstriction that improved 9 days after onset. Conclusion These findings indicate that airplane descent may be a trigger of RCVS. The time course of headache in the present case was similar to that of prolonged headache attributed to airplane travel, indicating that RCVS during air travel may have previously been overlooked and that some headache attributed to airplane travel cases may represent a milder form of RCVS.

  11. Airport Pavement Design For The Boeing 777 Airplane

    Science.gov (United States)

    1995-10-22

    The purpose of this advisory circular is to provide thickness design standards : for pavements intended to serve the Boeing 777 airplane. A new method of design : based on layered elastic analysis has been developed to calculate design : thickness fo...

  12. A Study of Transport Airplane Crash-Resistant Fuel Systems

    National Research Council Canada - National Science Library

    Robertson, S

    2002-01-01

    ...), of transport airplane crash-resistant fuel system (CRFS). The report covers the historical studies related to aircraft crash fires and fuel containment concepts undertaken by the FAA, NASA, and the U.S...

  13. 78 FR 72554 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2013-12-03

    ... Aerospace Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation Model... General Electric (GE) Aviation service information identified in this AD, contact Gulfstream Aerospace...

  14. Instrument Rating Practical Test Standards for Airplane, Helicopter, Airship

    Science.gov (United States)

    1994-10-01

    The Instrument Rating Practical Test Standards (PTS) book has : been published by the Federal Aviation Administration (FAA) to : establish the standards for the instrument rating practical test for : airplanes, helicopters, and airships. FAA inspecto...

  15. The Response of an Airplane to Random Atmospheric Disturbances

    National Research Council Canada - National Science Library

    Diederich, Franklin

    1957-01-01

    The local velocity fluctuations acting on an airplane flying through atmospheric turbulence are functions of time defined only in a statistical sense and, hence, constitute a stochastic or random process...

  16. Exposure to flame retardant chemicals on commercial airplanes.

    Science.gov (United States)

    Allen, Joseph G; Stapleton, Heather M; Vallarino, Jose; McNeely, Eileen; McClean, Michael D; Harrad, Stuart J; Rauert, Cassandra B; Spengler, John D

    2013-02-16

    Flame retardant chemicals are used in materials on airplanes to slow the propagation of fire. These chemicals migrate from their source products and can be found in the dust of airplanes, creating the potential for exposure. To characterize exposure to flame retardant chemicals in airplane dust, we collected dust samples from locations inside 19 commercial airplanes parked overnight at airport gates. In addition, hand-wipe samples were also collected from 9 flight attendants and 1 passenger who had just taken a cross-country (USA) flight. The samples were analyzed for a suite of flame retardant chemicals. To identify the possible sources for the brominated flame retardants, we used a portable XRF analyzer to quantify bromine concentrations in materials inside the airplanes. A wide range of flame retardant compounds were detected in 100% of the dust samples collected from airplanes, including BDEs 47, 99, 153, 183 and 209, tris(1,3-dichloro-isopropyl)phosphate (TDCPP), hexabromocyclododecane (HBCD) and bis-(2-ethylhexyl)-tetrabromo-phthalate (TBPH). Airplane dust contained elevated concentrations of BDE 209 (GM: 500 ug/g; range: 2,600 ug/g) relative to other indoor environments, such as residential and commercial buildings, and the hands of participants after a cross-country flight contained elevated BDE 209 concentrations relative to the general population. TDCPP, a known carcinogen that was removed from use in children's pajamas in the 1970's although still used today in other consumer products, was detected on 100% of airplanes in concentrations similar to those found in residential and commercial locations. This study adds to the limited body of knowledge regarding exposure to flame retardants on commercial aircraft, an environment long hypothesized to be at risk for maximum exposures due to strict flame retardant standards for aircraft materials. Our findings indicate that flame retardants are widely used in many airplane components and all airplane types, as

  17. The Airplane as an Open-Source Invention

    OpenAIRE

    Peter B. Meyer

    2013-01-01

    Airplanes were invented after decades of experimentation in many countries through a process we can call open-source innovation. Experimenters, inventors, and writers contributed to the airplane’s development by sharing information in publications, in clubs, by writing letters and by visiting. The hundreds of aeronautical patents before 1900 were treated like publications, not like claims to intellectual property. Inventors of modern airplanes copied earlier designs, analogously to advances i...

  18. STUDY OF THE AIR FLOWS AROUND AN AIRPLANE

    Directory of Open Access Journals (Sweden)

    Diaconescu Olivian

    2013-06-01

    Full Text Available This material presents a stage of the designing of an airplane capable to work with low capacity engines of 2.5 and 4 cmc namely the simulation of the air flow around the fuselage and the wings. The study proves the correctness of the choice made in the wing’s positioning and of the horizontal stabilizer of the airplane’s axis,for the chosen airplane type namely acrobat.

  19. DETERMINATION OF PARASITE DRAG FOR COMMERCIAL AIRPLANE AT TRANSONIC SPEEDS

    Directory of Open Access Journals (Sweden)

    V. I. Shevyakov

    2014-01-01

    Full Text Available It considers the task of determination of parasite drag for subsonic commercial airplane on the base of theoretical calculation procedures. It contains the procedure for clarification of empirical approach to calculation of parasite drag at high speeds. It provides examples of calculation of parasite drag at transonic speeds as a result of step behind the slat on the wing of commercial airplane.

  20. A family of supersonic airplanes: Technical and economic feasibility

    Science.gov (United States)

    Neumann, F. D.; Whitten, J. W.

    1980-01-01

    To improve the prospects for success in the market place, the family approach is essential to the design of future supersonic airplanes. The evolution from a basic supersonic airplane to a family could follow historic patterns, with one exception: substantial changes in passenger carrying capacity will be difficult by the conventional fuselage "doughnut" approach so successfully used on the cylindrical fuselage of subsonic airplanes. The primary reasons for this difference include the requirement for highly integrated "area ruled" configurations, to give the desired high supersonic aerodynamic efficiency, and other physical limitations such as takeoff and landing rotation. A concept for a supersonic airplane family that could effectively solve the variable range and passenger capacity problem provides for modification of the fuselage cross section that makes it possible to build a family of three airplanes with four, five, and six abreast passenger seating. This is done by replacing or modifying portions of the fuselage. All airplanes share the same wing, engines, and major subsystems. Only small sections of the fuselage would be different, and aerodynamic efficiency need not be compromised.

  1. Simple Electromagnetic Modeling of Small Airplanes: Neural Network Approach

    Directory of Open Access Journals (Sweden)

    P. Tobola

    2009-04-01

    Full Text Available The paper deals with the development of simple electromagnetic models of small airplanes, which can contain composite materials in their construction. Electromagnetic waves can penetrate through the surface of the aircraft due to the specific electromagnetic properties of the composite materials, which can increase the intensity of fields inside the airplane and can negatively influence the functionality of the sensitive avionics. The airplane is simulated by two parallel dielectric layers (the left-hand side wall and the right-hand side wall of the airplane. The layers are put into a rectangular metallic waveguide terminated by the absorber in order to simulate the illumination of the airplane by the external wave (both of the harmonic nature and pulse one. Thanks to the simplicity of the model, the parametric analysis can be performed, and the results can be used in order to train an artificial neural network. The trained networks excel in further reduction of CPU-time demands of an airplane modeling.

  2. Revolution in airplane construction? Grob G110: The first modern fiber glass composition airplane shortly before its maiden flight

    Science.gov (United States)

    Dorpinghaus, R.

    1982-01-01

    A single engine two passenger airplane, constructed completely from fiber reinforced plastic materials is introduced. The cockpit, controls, wing profile, and landing gear are discussed. Development of the airframe is also presented.

  3. Soil settlement analysis in soft soil by using preloading system and prefabricated vertical draining runway of Kualanamu Airport

    Science.gov (United States)

    Roesyanto; Iskandar, R.; Silalahi, S. A.; Fadliansyah

    2018-02-01

    The method of soil improvement, using the combination of prefabricated vertical drain (PVD) and preloading, was used to accelerate the process of consolidation and the consolidation settlement in the runway of Kualanamu International Airport, which was constructed on the soft soil sediment like silty clay. In this research, the investigated area was the runway of Kualanamu International Airport zone I which had 11 meter-thickness of soft soil. Geotechnic instruments surveyed was settlement plate. Monitoring was done toward the behavior of landfill such as basic soil settlement. The result were compared with the analysis of finite element method of full scale in Mohr-Coulomb model by verifying the vertical drain of asymmetric unit cell and equivalent plane strain unit cell condition. The results of the research showed that there were an interesting behavior between the data in field observation and finite element of Mohr-Coulomb model. It was also found that the result of soil settlement of finite element method of Mohr-Coulomb model was closed to the result of settlement plate monitoring.

  4. 77 FR 60005 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2012-10-01

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. It also withdraws the notice entitled, ``Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues'', published on...

  5. 76 FR 75735 - Certification of Part 23 Turbofan- and Turbojet-Powered Airplanes and Miscellaneous Amendments

    Science.gov (United States)

    2011-12-02

    ... conventional horizontal tails and those that use trimmable elevators. Airplanes that experienced upset.... Diamond asked why this rule did not apply to turboprops and piston-powered airplanes. Parking brakes and...

  6. Design definition study of a lift/cruise fan technology V/STOL airplane: Summary

    Science.gov (United States)

    Zabinsky, J. M.; Higgins, H. C.

    1975-01-01

    A two-engine three-fan V/STOL airplane was designed to fulfill naval operational requirements. A multimission airplane was developed from study of specific point designs. Based on the multimission concept, airplanes were designed to demonstrate and develop the technology and operational procedures for this class of aircraft. Use of interconnected variable pitch fans led to a good balance between high thrust with responsive control and efficient thrust at cruise speeds. The airplanes and their characteristics are presented.

  7. Headache attributed to airplane travel ('airplane headache'): clinical profile based on a large case series.

    Science.gov (United States)

    Mainardi, F; Lisotto, C; Maggioni, F; Zanchin, G

    2012-06-01

    The 'headache attributed to airplane travel', also named 'airplane headache' (AH), is a recently described headache disorder that appears exclusively in relation to airplane flights, in particular during the landing phase. Based on the stereotypical nature of the attacks in all reported cases, we proposed provisional diagnostic criteria for AH in a previously published paper. Up to now 37 cases have been described in the literature. After our paper was disseminated via the Internet, we received several email messages from subjects around the world who had experienced such a peculiar headache. Their cooperation, by completing a structured questionnaire and allowing the direct observation of three subjects, enabled us to carry out a study on a total of 75 patients suffering from AH. Our survey confirmed the stereotypical nature of the attacks, in particular with regard to the short duration of the pain (lasting less than 30 minutes in up to 95% of the cases), the clear relationship with the landing phase, the unilateral pain, the male preponderance, and the absence of accompanying signs and/or symptoms. It is conceivable to consider barotrauma as one of the main mechanisms involved in the pathophysiology of AH. The observation that the pain appears inconstantly in the majority of cases, without any evident disorder affecting the paranasal sinuses, could be consistent with a multimodal pathogenesis underlying this condition, possibly resulting in the interaction between anatomic, environmental and temporary concurrent factors. This is by far the largest AH case series ever reported in the literature. The diagnostic criteria that we previously proposed proved to be valid when applied to a large number of patients suffering from this condition. We support its recognition as a new form of headache, to be included in the forthcoming update of the International Headache Society Classification, within '10. Headache attributed to disorder of homoeostasis'. Its formal

  8. Telemetry Boards Interpret Rocket, Airplane Engine Data

    Science.gov (United States)

    2009-01-01

    For all the data gathered by the space shuttle while in orbit, NASA engineers are just as concerned about the information it generates on the ground. From the moment the shuttle s wheels touch the runway to the break of its electrical umbilical cord at 0.4 seconds before its next launch, sensors feed streams of data about the status of the vehicle and its various systems to Kennedy Space Center s shuttle crews. Even while the shuttle orbiter is refitted in Kennedy s orbiter processing facility, engineers constantly monitor everything from power levels to the testing of the mechanical arm in the orbiter s payload bay. On the launch pad and up until liftoff, the Launch Control Center, attached to the large Vehicle Assembly Building, screens all of the shuttle s vital data. (Once the shuttle clears its launch tower, this responsibility shifts to Mission Control at Johnson Space Center, with Kennedy in a backup role.) Ground systems for satellite launches also generate significant amounts of data. At Cape Canaveral Air Force Station, across the Banana River from Kennedy s location on Merritt Island, Florida, NASA rockets carrying precious satellite payloads into space flood the Launch Vehicle Data Center with sensor information on temperature, speed, trajectory, and vibration. The remote measurement and transmission of systems data called telemetry is essential to ensuring the safe and successful launch of the Agency s space missions. When a launch is unsuccessful, as it was for this year s Orbiting Carbon Observatory satellite, telemetry data also provides valuable clues as to what went wrong and how to remedy any problems for future attempts. All of this information is streamed from sensors in the form of binary code: strings of ones and zeros. One small company has partnered with NASA to provide technology that renders raw telemetry data intelligible not only for Agency engineers, but also for those in the private sector.

  9. 75 FR 61655 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-10-06

    ..., Inc. Model PA-28-161 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Piper Aircraft, Inc. (Piper) Model PA-28-161 airplanes equipped with.... Piper Model PA-28-161 airplanes modified by STC No. SA03303AT have a similar unsafe design feature that...

  10. 76 FR 29176 - Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Airplanes

    Science.gov (United States)

    2011-05-20

    ..., Inc. PA-23, PA-31, and PA-42 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... (AD) that applies to Piper Aircraft, Inc. PA-23, PA-31, and PA-42 airplanes. The existing AD currently... certain Piper Aircraft, Inc. PA-23, PA-31, and PA-42 airplanes. That AD established life limits for safety...

  11. 75 FR 43878 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-07-27

    ... Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G Airplanes.... Since that NPRM was issued, we have determined that Model FAN JET FALCON SERIES C, D, E, F, and G..., Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G airplanes, and Model MYSTERE-FALCON 20-C5...

  12. 75 FR 79952 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-12-21

    ... Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON.... (1) DASSAULT AVIATION Model Falcon 10 airplanes, Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E... airplanes Inspection threshold (whichever occurs later) Inspection interval Model FAN JET FALCON, FAN JET...

  13. 14 CFR 125.175 - Protection of other airplane components against fire.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components... CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD... Requirements § 125.175 Protection of other airplane components against fire. (a) Except as provided in...

  14. 14 CFR 121.277 - Protection of other airplane components against fire.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components....277 Protection of other airplane components against fire. (a) Except as provided in paragraph (b) of this section, all airplane surfaces aft of the nacelles in the area of one nacelle diameter on both...

  15. 14 CFR 135.397 - Small transport category airplane performance operating limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small transport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.397 Small transport category airplane performance operating limitations. (a) No person may operate a reciprocating engine...

  16. 14 CFR 135.399 - Small nontransport category airplane performance operating limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small nontransport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.399 Small nontransport category airplane performance operating limitations. (a) No person may operate a reciprocating engine or...

  17. 14 CFR 121.411 - Qualifications: Check airmen (airplane) and check airmen (simulator).

    Science.gov (United States)

    2010-01-01

    ... following— (1) Fly at least two flight segments as a required crewmember for the type airplane involved... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Qualifications: Check airmen (airplane) and... § 121.411 Qualifications: Check airmen (airplane) and check airmen (simulator). (a) For the purposes of...

  18. 14 CFR 121.643 - Fuel supply: Nonturbine and turbo-propeller-powered airplanes: Supplemental operations.

    Science.gov (United States)

    2010-01-01

    ... operating nontransport category airplanes type certificated after December 31, 1964, to fly for 30 minutes...-powered airplanes: Supplemental operations. 121.643 Section 121.643 Aeronautics and Space FEDERAL AVIATION... Flight Release Rules § 121.643 Fuel supply: Nonturbine and turbo-propeller-powered airplanes...

  19. 77 FR 59873 - Airworthiness Directives; Cessna Aircraft Company Airplanes; Initial Regulatory Flexibility Analysis

    Science.gov (United States)

    2012-10-01

    ... should be flown into known icing. However, the original certification basis for these airplanes did not... equipment these airplanes may be qualified to fly into known light or moderate icing condition under 14 CFR... significant alternative to prohibiting the affected airplanes from flying into known icing conditions. And...

  20. 14 CFR 125.375 - Fuel supply: Nonturbine and turbopropeller-powered airplanes.

    Science.gov (United States)

    2010-01-01

    ...) Thereafter, to fly for 45 minutes at normal crusing fuel consumption. (b) If the airplane is released for any...-powered airplanes. 125.375 Section 125.375 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... AND OPERATIONS CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE...

  1. 14 CFR Appendix B to Part 121 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ...-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split surfaces, suitable... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification B... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Pt. 121, App. B Appendix B to Part 121—Airplane...

  2. 76 FR 65103 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Aircraft Electronic...

    Science.gov (United States)

    2011-10-20

    .... This airplane will have novel or unusual design features associated with the architecture and... interior design configuration in the Gulfstream Model GIV-X passenger airplane. The Gulfstream Model GIV-X is a two-engine jet transport airplane with a maximum takeoff weight of 47,600 pounds and an interior...

  3. Patterns of measles transmission among airplane travelers.

    Science.gov (United States)

    Edelson, Paul J

    2012-09-01

    With advanced air handling systems on modern aircraft and the high level of measles immunity in many countries, measles infection in air travelers may be considered a low-risk event. However, introduction of measles into countries where transmission has been controlled or eliminated can have substantial consequences both for the use of public health resources and for those still susceptible. In an effort to balance the relatively low likelihood of disease transmission among largely immune travelers and the risk to the public health of the occurrence of secondary cases resulting from importations, criteria in the United States for contact investigations for measles exposures consider contacts to be those passengers who are seated within 2 rows of the index case. However, recent work has shown that cabin air flow may not be as reliable a barrier to the spread of measles virus as previously believed. Along with these new studies, several reports have described measles developing after travel in passengers seated some distance from the index case. To understand better the potential for measles virus to spread on an airplane, reports of apparent secondary cases occurring in co-travelers of passengers with infectious cases of measles were reviewed. Medline™ was searched for articles in all languages from 1946 to week 1 of March 2012, using the search terms "measles [human] or rubeola" and ("aircraft" or "airplane" or "aeroplane" or "aviation" or "travel" or "traveler" or "traveller"); 45 citations were returned. Embase™ was searched from 1988 to week 11 2012, using the same search strategy; 95 citations were returned. Papers were included in this review if they reported secondary cases of measles occurring in persons traveling on an airplane on which a person or persons with measles also flew, and which included the seating location of both the index case(s) and the secondary case(s) on the plane. Nine reports, including 13 index cases and 23 apparent secondary cases

  4. Solar Airplanes and Regenerative Fuel Cells

    Science.gov (United States)

    Bents, David J.

    2007-01-01

    A solar electric aircraft with the potential to "fly forever" has captured NASA's interest, and the concept for such an aircraft was pursued under Aeronautics Environmental Research Aircraft and Sensor Technology (ERAST) project. Feasibility of this aircraft happens to depend on the successful development of solar power technologies critical to NASA's Exploration Initiatives; hence, there was widespread interest throughout NASA to bring these technologies to a flight demonstration. The most critical is an energy storage system to sustain mission power during night periods. For the solar airplane, whose flight capability is already limited by the diffuse nature of solar flux and subject to latitude and time of year constraints, the feasibility of long endurance flight depends on a storage density figure of merit better than 400-600 watt-hr per kilogram. This figure of merit is beyond the capability of present day storage technologies (other than nuclear) but may be achievable in the hydrogen-oxygen regenerative fuel cell (RFC). This potential has led NASA to undertake the practical development of a hydrogen-oxygen regenerative fuel cell, initially as solar energy storage for a high altitude UAV science platform but eventually to serve as the primary power source for NASAs lunar base and other planet surface installations. Potentially the highest storage capacity and lowest weight of any non-nuclear device, a flight-weight RFC aboard a solar-electric aircraft that is flown continuously through several successive day-night cycles will provide the most convincing demonstration that this technology's widespread potential has been realized. In 1998 NASA began development of a closed cycle hydrogen oxygen PEM RFC under the Aeronautics Environmental Research Aircraft and Sensor Technology (ERAST) project and continued its development, originally for a solar electric airplane flight, through FY2005 under the Low Emissions Alternative Power (LEAP) project. Construction of

  5. Planetary Airplane Extraction System Development and Subscale Testing

    Science.gov (United States)

    Teter, John E., Jr.

    2006-01-01

    The Aerial Regional-scale Environmental Survey (ARES) project will employ an airplane as the science platform from which to collect science data in the previously inaccessible, thin atmosphere of Mars. In order for the airplane to arrive safely in the Martian atmosphere, a number of sequences must occur. A critical element in the entry sequence at Mars is an extraction maneuver to separate the airplane quickly (in less than a second) from its protective backshell to reduce the possibility of re-contact, potentially leading to mission failure. This paper describes the development, testing, and lessons learned from building a 1/3 scale model of this airplane extraction system. This design, based on the successful Mars Exploration Rover (MER) extraction mechanism, employs a series of trucks rolling along tracks located on the surface of the central parachute can. Numerous tests using high speed video were conducted at the Langley Research Center to validate this concept. One area of concern was that that although the airplane released cleanly, a pitching moment could be introduced. While targeted for a Mars mission, this concept will enable environmental surveys by aircraft in other planetary bodies with a sensible atmosphere such as Venus or Saturn's moon, Titan.

  6. Three Cases of Spine Fractures after an Airplane Crash

    Science.gov (United States)

    Lee, Han Joo; Moon, Bong Ju; Pennant, William A.; Shin, Dong Ah; Kim, Keung Nyun; Yoon, Do Heum

    2015-01-01

    While injuries to the spine after an airplane crash are not rare, most crashes result in fatal injuries. As such, few studies exist that reported on spine fractures sustained during airplane accidents. In this report, we demonstrate three cases of spine fractures due to crash landing of a commercial airplane. Three passengers perished from injuries after the crash landing, yet most of the passengers and crew on board survived, with injuries ranging from minor to severe. Through evaluating our three spine fracture patients, it was determined that compression fracture of the spine was the primary injury related to the airplane accident. The first patient was a 20-year-old female who sustained a T6-8 compression fracture without neurologic deterioration. The second patient was a 33-year-old female with an L2 compression fracture, and the last patient was a 49-year-old male patient with a T8 compression fracture. All three patients were managed conservatively and required spinal orthotics. During the crash, each of these patients were subjected to direct, downward high gravity z-axis (Gz) force, which gave rise to load on the spine vertically, thereby causing compression fracture. Therefore, new safety methods should be developed to prevent excessive Gz force during airplane crash landings. PMID:27169094

  7. 78 FR 76731 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Science.gov (United States)

    2013-12-19

    ... series airplanes have fly-by-wire controls, fully software-configurable avionics, and fiber-optic... Series Airplanes; Rechargeable Lithium Ion Batteries and Battery Systems AGENCY: Federal Aviation... Boeing Model 777- 200, -300, and -300ER series airplanes. These airplanes as modified by the ARINC...

  8. 78 FR 76249 - Special Conditions: Airbus, Model A350-900 Series Airplane; Flight Envelope Protection: Normal...

    Science.gov (United States)

    2013-12-17

    .... As with the previous fly-by-wire airplanes, the FAA has no regulatory or safety reason to inhibit the...-0905; Notice No. 25-13-28-SC] Special Conditions: Airbus, Model A350-900 Series Airplane; Flight... Airbus Model A350- 900 series airplanes. These airplanes will have a novel or unusual design feature(s...

  9. Solar Airplane Concept Developed for Venus Exploration

    Science.gov (United States)

    Landis, Geoffrey A.

    2004-01-01

    An airplane is the ideal vehicle for gathering atmospheric data over a wide range of locations and altitudes, while having the freedom to maneuver to regions of scientific interest. Solar energy is available in abundance on Venus. Venus has an exoatmospheric solar flux of 2600 W/m2, compared with Earth's 1370 W/m2. The solar intensity is 20 to 50 percent of the exoatmospheric intensity at the bottom of the cloud layer, and it increases to nearly 95 percent of the exoatmospheric intensity at 65 km. At these altitudes, the temperature of the atmosphere is moderate, in the range of 0 to 100 degrees Celsius, depending on the altitude. A Venus exploration aircraft, sized to fit in a small aeroshell for a "Discovery" class scientific mission, has been designed and analyzed at the NASA Glenn Research Center. For an exploratory aircraft to remain continually illuminated by sunlight, it would have to be capable of sustained flight at or above the wind speed, about 95 m/sec at the cloud-top level. The analysis concluded that, at typical flight altitudes above the cloud layer (65 to 75 km above the surface), a small aircraft powered by solar energy could fly continuously in the atmosphere of Venus. At this altitude, the atmospheric pressure is similar to pressure at terrestrial flight altitudes.

  10. Advances in Thrust-Based Emergency Control of an Airplane

    Science.gov (United States)

    Creech, Gray; Burken, John J.; Burcham, Bill

    2003-01-01

    Engineers at NASA's Dryden Flight Research Center have received a patent on an emergency flight-control method implemented by a propulsion-controlled aircraft (PCA) system. Utilizing the preexisting auto-throttle and engine-pressure-ratio trim controls of the airplane, the PCA system provides pitch and roll control for landing an airplane safely without using aerodynamic control surfaces that have ceased to function because of a primary-flight-control-system failure. The installation of the PCA does not entail any changes in pre-existing engine hardware or software. [Aspects of the method and system at previous stages of development were reported in Thrust-Control System for Emergency Control of an Airplane (DRC-96-07), NASA Tech Briefs, Vol. 25, No. 3 (March 2001), page 68 and Emergency Landing Using Thrust Control and Shift of Weight (DRC-96-55), NASA Tech Briefs, Vol. 26, No. 5 (May 2002), page 58.]. Aircraft flight-control systems are designed with extensive redundancy to ensure low probabilities of failure. During recent years, however, several airplanes have exhibited major flight-control-system failures, leaving engine thrust as the last mode of flight control. In some of these emergency situations, engine thrusts were successfully modulated by the pilots to maintain flight paths or pitch angles, but in other situations, lateral control was also needed. In the majority of such control-system failures, crashes resulted and over 1,200 people died. The challenge lay in creating a means of sufficient degree of thrust-modulation control to safely fly and land a stricken airplane. A thrust-modulation control system designed for this purpose was flight-tested in a PCA an MD-11 airplane. The results of the flight test showed that without any operational control surfaces, a pilot can land a crippled airplane (U.S. Patent 5,330,131). The installation of the original PCA system entailed modifications not only of the flight-control computer (FCC) of the airplane but

  11. 78 FR 59798 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-30

    .... American and Delta confirmed through a review of the applicable airplane illustrated parts catalogs that... type certificate (STC) ST00830SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0... that STC ST00830SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0...

  12. 77 FR 52212 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-29

    ... analysis of the predicted crack growth rate is used to establish the repetitive intervals of 1,400 flight cycles. These repetitive intervals must include the variability of crack growth rate between airplanes... 1 through 90 inclusive: Within 500 flight cycles after May 24, 2004 (the effective date of AD 2004...

  13. 77 FR 35304 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-06-13

    ... available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace...) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  14. 77 FR 36129 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-18

    ...) airplanes. This AD was prompted by reports of a bleed air leak from the high pressure ducts which was not... events reported where a bleed air leak from the high pressure ducts was not immediately detected by the... cracked or ruptured duct, the duct shroud may not channel sufficient bleed air to the sensing loop...

  15. 77 FR 45981 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-08-02

    ... failure of the screw cap or end cap of hydraulic accumulators on other airplane models, resulting in high-energy impact damage to adjacent systems and structure. This proposed AD would require inspecting for a part number and replacing the affected parking brake hydraulic accumulator, and relocating the parking...

  16. 78 FR 49240 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-08-13

    ...-400 series airplanes. This proposed AD was prompted by a report that a batch of main landing gear (MLG... personal information you provide. We will also post a report summarizing each substantive verbal contact we... installed backwards. This condition, if not corrected, could result in increased actuator friction, which...

  17. 78 FR 63855 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-10-25

    ... and 747-8 series airplanes. This AD requires a detailed inspection of the power control actuator (PCA... stabilizer rear spar and the elevator front spar and between certain stabilizer stations for defects and... from the left inboard elevator during a functional check of the ram air turbine system, and a...

  18. 77 FR 52201 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-29

    ...) software in the airplane information management system (AIMS) hardware. We are issuing this AD to prevent T... Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 78, Exhaust. (e... information management system hardware, in accordance with the Accomplishment Instructions of Boeing Special...

  19. 77 FR 10403 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-22

    ...-0145; Directorate Identifier 2011-NM-066-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 767 airplanes. The existing AD currently requires revising the Airworthiness... of certain doors and flaps was done based on their fatigue-critical nature. This proposed AD would...

  20. 77 FR 55681 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-11

    ... prompted by reports of stress corrosion cracking in the chord segments made from 7079 aluminum in the... repairing discrepancies if necessary. We are issuing this AD to detect and correct stress corrosion and/or... Work hours Average labor Parts Cost per product registered Fleet cost rate per hour airplanes...

  1. 77 FR 23166 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-18

    ... FURTHER INFORMATION CONTACT: Serj Harutunian, Aerospace Engineer, Propulsion Branch, ANM-140L, FAA, Los... regulations, the service history of airplanes subject to those regulations, and existing maintenance practices... indication to the flight crew that the tank is empty. The flight engineer must manually shut off each pump...

  2. 77 FR 37831 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-25

    ... Revise Repetitive Interval CAL, Qantas Airways Ltd (Qantas), and Boeing asked that we revise the... discrepancies. Qantas and Boeing asked that the repetitive interval be changed to 7,500 flight hours or 36 months, whichever occurs first. Qantas and Boeing stated that, for low-utilization airplanes, it would...

  3. 77 FR 47568 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-08-09

    ... for the three-light strobe system of certain Model G58 airplanes. The wire used is a smaller gauge... possible failure of the aircraft's strobe light system. The failure of the wiring for the aircraft's strobe...,410 $56,400 light strobe system. hour = $1,360. According to the manufacturer, some of the costs of...

  4. 76 FR 68666 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-11-07

    ... assemblies in the ECS with burned BMS 8-39 polyurethane foam insulation on two Model 767-200 series airplanes... in the ECS with burned BMS 8- 39 polyurethane foam insulation. These ADs also resulted from reports... effective date of the AD. In developing the compliance time for this action, we considered the degree of...

  5. 77 FR 12757 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-03-02

    ...: [email protected] ; or Internet: http://www.hawkerbeechcraft.com/customer_support/technical_and_field_support/ . You may review copies of the referenced service information at the FAA, Small Airplane...: http://www.hawkerbeechcraft.com/customer_support/technical_and_field_support/ . You may review copies...

  6. 77 FR 65642 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-30

    ... the fuel cross-feel valve is powered by the battery direct current (DC) bus. AAL added that the wing fuel pump relays and fuel cross-feed valve are both supplied by DC bus power on Model 737 airplanes... CMR would demonstrate proof of analysis, and provide a best-fit solution for that analysis; i.e., an...

  7. 77 FR 16191 - Airworthiness Directives; Bombardier Inc. Airplanes

    Science.gov (United States)

    2012-03-20

    ...-400 series airplanes. This proposed AD was prompted by reports that the automatic de-icing mode became..., contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5...). Investigation has revealed that the failures were attributed to overstressed capacitors installed in the circuit...

  8. 77 FR 56989 - Airworthiness Directives; Bombardier Inc. Airplanes

    Science.gov (United States)

    2012-09-17

    ...-8-400 series airplanes. This AD was prompted by reports that the automatic de-icing mode became... were attributed to overstressed capacitors installed in the circuit board of the TMU ``Module 300'' power supply. The failure of the capacitors leads to failure of the TMU ``Module 300'' power supply and...

  9. 77 FR 74579 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2012-12-17

    ... hydraulic valves in the flap hydraulic control module (FHCM) during the system power-on self test (SPOST... FSECU executing its SPOST before 115VAC and hydraulic power are available during the airplane power-on... whether hydraulic and electrical power have been supplied to the system articles under test; the test...

  10. 77 FR 29855 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-05-21

    ... data and determined that air safety and the public interest require adopting the AD as proposed. Costs... other factors, a fire and consequent damage to the airplane. DATES: This AD becomes effective June 25... INFORMATION CONTACT: Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport...

  11. 78 FR 4038 - Critical Parts for Airplane Propellers

    Science.gov (United States)

    2013-01-18

    ... because it updates the existing regulations for airplane propellers. I. Overview of Final Rule Part 35.... General Overview of Comments The FAA received three comments. One was from a repair station, Sensenich...,555.60 per respondent which will occur on the effective date of the rule. The total cost for the three...

  12. The Paper Airplane Challenge: A Market Economy Simulation. Lesson Plan.

    Science.gov (United States)

    Owens, Kimberly

    This lesson plan features a classroom simulation that helps students understand the characteristics of a market economic system. The lesson plan states a purpose; cites student objectives; suggests a time duration; lists materials needed; and details a step-by-step teaching procedure. The "Paper Airplane Challenge" handout is attached. (BT)

  13. Diagnosis and management of headache attributed to airplane travel.

    Science.gov (United States)

    Mainardi, Federico; Maggioni, Ferdinando; Lisotto, Carlo; Zanchin, Giorgio

    2013-03-01

    The headache attributed to airplane travel, also named "airplane headache", is characterized by the sudden onset of a severe head pain exclusively in relation to airplane flights, mainly during the landing phase. Secondary causes, such as upper respiratory tract infections or acute sinusitis, must be ruled out. Although its cause is not thoroughly understood, sinus barotrauma should be reasonably involved in the pathophysiological mechanisms. Furthermore, in the current International Classification of Headache Disorders, rapid descent from high altitude is not considered as a possible cause of headache, although the onset of such pain in airplane travellers or aviators has been well known since the beginning of the aviation era. On the basis of a survey we conducted with the courteous cooperation of people who had experienced this type of headache, we proposed diagnostic criteria to be added to the forthcoming revision of the International Classification of Headache Disorders. Their formal validation would favour further studies aimed at improving knowledge of the pathophysiological mechanisms involved and at implementing preventative measures.

  14. 78 FR 47233 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-05

    ... information identified in this proposed AD, contact Live TV, 8900 Hangar Boulevard, Orlando, FL 32827... inspections of the radome assembly of various Model 737 series airplanes that had in-flight entertainment systems installed using certain STC issued to Live TV. The STC numbers are STC ST00284BO, http://rgl.faa...

  15. 77 FR 45979 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-08-02

    ..., without change, to http://www.regulations.gov , including any personal information you provide. We will... between the national Government and the States, or on the distribution of power and responsibilities among..., unless already done. (g) Inspection (1) As of the effective date of this AD, if the age of the airplane...

  16. 77 FR 3 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2012-01-03

    ... wiring in the RAT generator, which could result in degraded direct current power to essential airplane... degraded direct current power which is distributed to essential aeroplane systems and therefore aeroplane... to prevent loose internal wiring in the RAT generator, which could result in degraded direct current...

  17. 78 FR 49982 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2013-08-16

    ...)(ii) of this AD, as applicable. (i) Single System: Pull the compressor control circuit breaker... airplane logbook referring to this AD as the reason for deactivation. (ii) Dual System: Pull the compressor... compressor motor is installed, an inspection to determine the age of a certain compressor hour meter since...

  18. 78 FR 37448 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-06-21

    ... engineering solution such as anti- lock brakes, which could prevent brake lock-up and avoid the adverse condition. It would address maximum braking, no matter what the cause. The anti-lock system would include... airplanes. This AD was prompted by reports that during maximum braking, if the brakes lock up and a skid...

  19. 77 FR 40828 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-11

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model DC-10-10 and MD-10-10F airplanes. This proposed AD was prompted by a report that the safe life limit on...-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: Deliver to Mail address above...

  20. 78 FR 21576 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0300; Directorate Identifier 2011-NM-163-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757.... For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention...

  1. 78 FR 46538 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0666; Directorate Identifier 2013-NM-060-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  2. 78 FR 21569 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0299; Directorate Identifier 2012-NM-072-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  3. 78 FR 3363 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-01-16

    ...-1318; Directorate Identifier 2012-NM-104-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  4. 78 FR 27315 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-10

    ...-0369; Directorate Identifier 2012-NM-128-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 757... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  5. 77 FR 5996 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... control system (ECS) wrapped with Boeing Material Specification (BMS) 8-39 or Aeronautical Materials...

  6. 76 FR 77937 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-15

    ...-1320; Directorate Identifier 2011-NM-208-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  7. 78 FR 27310 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-05-10

    ...-0368; Directorate Identifier 2012-NM-058-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  8. 78 FR 52838 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... October 1, 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  9. 78 FR 55662 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-09-11

    ...-0706; Directorate Identifier 2013-NM-067-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain the Boeing Company Model DC-9... Federal holidays. For service information identified in this AD, contact Boeing Commercial Airplanes...

  10. 78 FR 73457 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-12-06

    ...-1023; Directorate Identifier 2013-NM-042-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... Boeing Company Model 747-100, 747-200B, 747-200F series airplanes. AD 84-19-01 requires repetitive... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  11. 78 FR 52875 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ...-0701; Directorate Identifier 2013-NM-073-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all the Boeing Company Model 727.... For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention...

  12. 77 FR 21422 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747- 200B, 747-200C, 747-200F, 747-300, 747-400..., September 21, 2007). ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  13. 78 FR 26720 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-08

    ...-0366; Directorate Identifier 2011-NM-024-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-300, 747-400, 747-400D... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  14. 77 FR 12170 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-29

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... the AD as of April 4, 2012. ADDRESSES: For service information identified in this AD, contact Boeing... 98124-2207; telephone 206- 544-5000, extension 1; fax 206-766-5680; email [email protected]boeing.com...

  15. 78 FR 24037 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-24

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... AD until Boeing has released service information. (Specific modifications and solutions were not...

  16. 78 FR 21571 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0304; Directorate Identifier 2013-NM-005-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  17. 77 FR 57541 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0938; Directorate Identifier 2011-NM-271-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  18. 77 FR 57539 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0935; Directorate Identifier 2011-NM-256-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  19. 77 FR 731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-01-06

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT..., 2012. ADDRESSES: For Boeing service information identified in this AD, contact Boeing Commercial...; telephone (206) 544-5000, extension 1; fax (206) 766-5680; email [email protected]boeing.com ; Internet https://www...

  20. 77 FR 57529 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0937; Directorate Identifier 2011-NM-270-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  1. 77 FR 24831 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... directive (AD): 2012-08-17 The Boeing Company: Amendment 39-17034; Docket No. FAA- 2012-0110; Directorate...

  2. 78 FR 73744 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-09

    ...-0268; Directorate Identifier 2011-NM-129-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... proposed rulemaking (SNPRM) for all The Boeing Company Model 737-600, -700, - 700C, -800, -900 and -900ER... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  3. 78 FR 15281 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... April 15, 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  4. 77 FR 55159 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 737-700... p.m., Monday through Friday, except Federal holidays. For Boeing service information identified in...

  5. 78 FR 72836 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-04

    ...-0977; Directorate Identifier 2013-NM-190-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 717-200... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood...

  6. 77 FR 46340 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-03

    ...-0803; Directorate Identifier 2011-NM-214-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to supersede an existing airworthiness directive (AD) that applies to all The Boeing... holidays. For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  7. 78 FR 58982 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-25

    ...-0796; Directorate Identifier 2013-NM-111-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to supersede airworthiness directive (AD) 2013-07- 07, which applies to all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  8. 78 FR 40050 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0540; Directorate Identifier 2012-NM-185-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400... Federal holidays. For service information identified in this AD, contact Boeing Commercial Airplanes...

  9. 77 FR 63266 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-16

    ...-1073; Directorate Identifier 2012-NM-078-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  10. 77 FR 47329 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ...-0805; Directorate Identifier 2012-NM-117-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... propose to rescind an existing airworthiness directive (AD) that applies to certain The Boeing Company... service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data...

  11. Airplane radiation dose decrease during a strong Forbush decrease

    Czech Academy of Sciences Publication Activity Database

    Spurný, František; Kudela, K.; Dachev, T.

    2004-01-01

    Roč. 2, S05001 (2004), s. 1-4 ISSN 1542-7390 Grant - others:EC project(XE) FIGM-CT2000-00068 Institutional research plan: CEZ:AV0Z1048901 Keywords : airplane dose * Forbush decrease * cosmic rays Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders

  12. 76 FR 81879 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-29

    ... chord, which could result in loss of structural integrity of the airplane. Since these actions impose an... public the chance to comment on these proposed changes. DATES: We must receive comments on this... this AD to detect and correct such cracks, which could result in loss of structural integrity of the...

  13. 78 FR 45898 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-30

    ... airplanes of total loss of boost pump pressure of the fuel feed system, followed by loss of fuel system... correct failure of the engine fuel suction feed of the fuel system, which, in the event of total loss of... in the previous SNPRM, we are reopening the comment period to allow the public the chance to comment...

  14. 77 FR 10352 - Airworthiness Directives; Various Transport Category Airplanes

    Science.gov (United States)

    2012-02-22

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2010... Airworthiness Directives; Various Transport Category Airplanes AGENCY: Federal Aviation Administration (FAA... doors for proper operation, fit, sealing, and latching for the containment of possible trash fires. (2...

  15. 75 FR 61657 - Airworthiness Directives; Transport Category Airplanes

    Science.gov (United States)

    2010-10-06

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2010... Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice... operation, fit, sealing, and latching for the containment of possible trash fires. (2) Correct all defects...

  16. Small-scale fixed wing airplane software verification flight test

    Science.gov (United States)

    Miller, Natasha R.

    The increased demand for micro Unmanned Air Vehicles (UAV) driven by military requirements, commercial use, and academia is creating a need for the ability to quickly and accurately conduct low Reynolds Number aircraft design. There exist several open source software programs that are free or inexpensive that can be used for large scale aircraft design, but few software programs target the realm of low Reynolds Number flight. XFLR5 is an open source, free to download, software program that attempts to take into consideration viscous effects that occur at low Reynolds Number in airfoil design, 3D wing design, and 3D airplane design. An off the shelf, remote control airplane was used as a test bed to model in XFLR5 and then compared to flight test collected data. Flight test focused on the stability modes of the 3D plane, specifically the phugoid mode. Design and execution of the flight tests were accomplished for the RC airplane using methodology from full scale military airplane test procedures. Results from flight test were not conclusive in determining the accuracy of the XFLR5 software program. There were several sources of uncertainty that did not allow for a full analysis of the flight test results. An off the shelf drone autopilot was used as a data collection device for flight testing. The precision and accuracy of the autopilot is unknown. Potential future work should investigate flight test methods for small scale UAV flight.

  17. 78 FR 6200 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-30

    ... FR 11416, February 27, 2012) and replace the words ``other products of this same type design'' in the paragraph ``FAA's Determination,'' with the words ``the Boeing 737 Next Generation (737NG) airplane prior to... significant economic impact, positive or negative, on a substantial number of small entities under the...

  18. 77 FR 50407 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-21

    ... requires repetitive inspections to detect cracking of the lower corners of the door frame and cross beam of... cracks are found in the number 5 cross beam, and corrective actions if necessary. For certain airplanes... inspections to detect cracking of the lower corners of the door frame and cross beam of the forward cargo door...

  19. 78 FR 18257 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-03-26

    ... loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure... necessary to protect the hydraulic system and airplane structure from possible damage by any faulty screw... brake accumulator screw cap or end cap resulting in loss of the number 2 hydraulic system and damage to...

  20. 77 FR 16193 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-03-20

    ... loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure... that resulted in loss of use of that hydraulic system and in high-energy impact damage to adjacent... (Regional Jet Series 900) airplanes. This proposed AD was prompted by reports of failures of a hydraulic...

  1. 77 FR 65617 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-10-30

    ... cap of hydraulic accumulators on other airplane models, resulting in high-energy impact damage to... the associated hydraulic system and high-energy impact damage to adjacent systems and structure. To... by cases of on-ground hydraulic accumulator/screw cap/end cap failure, resulting in high-energy...

  2. 77 FR 20511 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-05

    ... any cold-bonding methods that would be applicable to the composite TR inner wall on the affected airplanes. Current SRM repair methods for composite structure involve either autoclave or vacuum bag/heat... Parker, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO...

  3. 78 FR 49221 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-08-13

    ... this AD, inspect the wing lift strut forks for cracks using magnetic particle procedures, such as those... Aircraft, Inc. Model J-2 airplanes equipped with wing lift struts. AD 99-26-19 currently requires repetitively inspecting the wing lift struts for dents and corrosion; repetitively inspecting the wing lift...

  4. 78 FR 9781 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2013-02-12

    ...-044-AD; Amendment 39-17335; AD 2013-03-01] RIN 2120-AA64 Airworthiness Directives; Pacific Aerospace... Aerospace Limited Models FU24-954 and FU24A-954 airplanes. This AD results from mandatory continuing.... For service information identified in this AD, contact Pacific Aerospace Limited, Hamilton Airport...

  5. 78 FR 49908 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes

    Science.gov (United States)

    2013-08-16

    ...-007-AD; Amendment 39-17542; AD 2013-16-04] RIN 2120-AA64 Airworthiness Directives; Eclipse Aerospace... adopting a new airworthiness directive (AD) for all Eclipse Aerospace, Inc. Model EA500 airplanes equipped... service information identified in this AD, contact Eclipse Aerospace, Inc., 26 East Palatine Road...

  6. 77 FR 54787 - Airworthiness Directives; M7 Aerospace LLC Airplanes

    Science.gov (United States)

    2012-09-06

    ...-17177; AD 2012-18-01] RIN 2120-AA64 Airworthiness Directives; M7 Aerospace LLC Airplanes AGENCY: Federal... new airworthiness directive (AD) for all M7 Aerospace LLC Models SA226-AT, SA226-T, SA226-T(B), SA226... information identified in this AD, contact M7 Aerospace LP, 10823 NE Entrance Road, San Antonio, Texas 78216...

  7. 77 FR 49394 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-08-16

    ... exist or develop on other products of the same type design. Costs of Compliance Based on the service...-400, -401, and -402 airplanes. This proposed AD was prompted by reports of an in-service incident where the propeller de-icing system became unavailable due to burnt/ chafed wires within the alternating...

  8. 78 FR 22172 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-15

    ... revealed defective, misapplied, or missing secondary fuel vapor barriers on the center fuel tank. This AD..., and/or structural cracking of the center fuel tank. Model 757 airplanes have not had a history of... repairs: On-Condition Costs Cost per Action Labor cost Parts cost product Apply secondary fuel barrier...

  9. 77 FR 42455 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-07-19

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012... those already placed on an airplane's wing root, is not at a high risk of an inadvertent in-flight... U.S. Action Labor cost Parts cost product operators Relocate the magneto switch from the 3.5 work...

  10. Aerobasics–An Introduction to Aeronautics-Airplane Propulsion

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 7. Aerobasics – An Introduction to Aeronautics - Airplane Propulsion. S P Govinda Raju. Series Article Volume 14 Issue 7 July 2009 pp 650-666. Fulltext. Click here to view fulltext PDF. Permanent link:

  11. Blended Buffet-Load-Alleviation System for Fighter Airplane

    Science.gov (United States)

    Moses, Robert W.

    2005-01-01

    The capability of modern fighter airplanes to sustain flight at high angles of attack and/or moderate angles of sideslip often results in immersion of part of such an airplane in unsteady, separated, vortical flow emanating from its forebody or wings. The flows from these surfaces become turbulent and separated during flight under these conditions. These flows contain significant levels of energy over a frequency band coincident with that of low-order structural vibration modes of wings, fins, and control surfaces. The unsteady pressures applied to these lifting surfaces as a result of the turbulent flows are commonly denoted buffet loads, and the resulting vibrations of the affected structures are known as buffeting. Prolonged exposure to buffet loads has resulted in fatigue of structures on several airplanes. Damage to airplanes caused by buffeting has led to redesigns of airplane structures and increased support costs for the United States Air Force and Navy as well as the armed forces of other countries. Time spent inspecting, repairing, and replacing structures adversely affects availability of aircraft for missions. A blend of rudder-control and piezoelectric- actuator engineering concepts was selected as a basis for the design of a vertical-tail buffet-load-alleviation system for the F/A-18 airplane. In this system, the rudder actuator is used to control the response of the first tail vibrational mode (bending at a frequency near 15 Hz), while directional patch piezoelectric actuators are used to control the second tail vibrational mode (tip torsion at a frequency near 45 Hz). This blend of two types of actuator utilizes the most effective features of each. An analytical model of the aeroservoelastic behavior of the airplane equipped with this system was validated by good agreement with measured results from a full-scale ground test, flight-test measurement of buffet response, and an in-flight commanded rudder frequency sweep. The overall performance of the

  12. State of the art of piloted electric airplanes, NASA's centennial challenge data and fundamental design implications

    Science.gov (United States)

    Costello, Lori Anne

    The purpose of this study was to determine the current state of the electric airplane as primarily defined by results from NASA's Green Flight Challenge Competition. New equations must be derived in order to determine the endurance and range for electric airplanes since the standard equations depend upon weight change over a flight and the weight of an electric airplane does not change. These new equations could then be solved for the optimal velocity and altitude which were the two driving factors that could change range and endurance for a given airplane configuration. The best velocity for range and endurance is not a function of energy storage or weight change thus the results turn out to be very similar to internal combustion engine airplanes, however, the optimal altitude for the best range and endurance equates to flying as high as reasonably possible. From examining the Green Flight Challenge data of the two fully electric airplanes, the analysis suggests that the electric propulsion system is not the only measure, given today's battery technology, that helps create a viable electric airplane solution. Aerodynamic efficiency becomes very important in order to reduce the required amount of energy. Airplanes that are aerodynamically inefficient make bad electric airplanes because the energy density of batteries is still low and the energy available to carry on board is limited. The more energy wasted on drag, the less the range and endurance of the airplane can be since the addition of more batteries may not be an option.

  13. 78 FR 63847 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Airplane Electronic System Security...

    Science.gov (United States)

    2013-10-25

    ... operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is designed for..., Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-1298...

  14. 78 FR 63845 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Isolation or Airplane Electronic...

    Science.gov (United States)

    2013-10-25

    ... corporate flight, fractional, charter, and private owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and... Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue...

  15. Comparison study on flexible pavement design using FAA (Federal Aviation Administration) and LCN (Load Classification Number) code in Ahmad Yani international airport’s runway

    Science.gov (United States)

    Santoso, S. E.; Sulistiono, D.; Mawardi, A. F.

    2017-11-01

    FAA code for airport design has been broadly used by Indonesian Ministry of Aviation since decades ago. However, there is not much comprehensive study about its relevance and efficiency towards current situation in Indonesia. Therefore, a further comparison study on flexible pavement design for airport runway using comparable method has become essential. The main focus of this study is to compare which method between FAA and LCN that offer the most efficient and effective way in runway pavement planning. The comparative methods in this study mainly use the variety of variable approach. FAA code for instance, will use the approach on the aircraft’s maximum take-off weight and annual departure. Whilst LCN code use the variable of equivalent single wheel load and tire pressure. Based on the variables mentioned above, a further classification and rated method will be used to determine which code is best implemented. According to the analysis, it is clear that FAA method is the most effective way to plan runway design in Indonesia with consecutively total pavement thickness of 127cm and LCN method total pavement thickness of 70cm. Although, FAA total pavement is thicker that LCN its relevance towards sustainable and pristine condition in the future has become an essential aspect to consider in design and planning.

  16. Images.

    Science.gov (United States)

    Barr, Catherine, Ed.

    1997-01-01

    The theme of this month's issue is "Images"--from early paintings and statuary to computer-generated design. Resources on the theme include Web sites, CD-ROMs and software, videos, books, and others. A page of reproducible activities is also provided. Features include photojournalism, inspirational Web sites, art history, pop art, and myths. (AEF)

  17. 77 FR 24759 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2012-04-25

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  18. 76 FR 60115 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2011-09-28

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  19. 76 FR 14115 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2011-03-15

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting... ] (ARAC) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for...

  20. 75 FR 10551 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2010-03-08

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  1. Imaging

    International Nuclear Information System (INIS)

    Kellum, C.D.; Fisher, L.M.; Tegtmeyer, C.J.

    1987-01-01

    This paper examines the advantages of the use of excretory urography for diagnosis. According to the authors, excretory urography remains the basic radiologic examination of the urinary tract and is the foundation for the evaluation of suspected urologic disease. Despite development of the newer diagnostic modalities such as isotope scanning, ultrasonography, CT, and magnetic resonsance imaging (MRI), excretory urography has maintained a prominent role in ruorradiology. Some indications have been altered and will continue to change with the newer imaging modalities, but the initial evaluation of suspected urinary tract structural abnormalities; hematuria, pyuria, and calculus disease is best performed with excretory urography. The examination is relatively inexpensive and simple to perform, with few contraindictions. Excretory urography, when properly performed, can provide valuable information about the renal parenchyma, pelvicalyceal system, ureters, and urinary bladder

  2. The Factors that Determine the Minimum Speed of an Airplane

    Science.gov (United States)

    Norton, F H

    1921-01-01

    The author argues that because of a general misunderstanding of the principles of flight at low speed, there are a large number of airplanes that could be made to fly several miles per hour slower than at present by making slight modifications. In order to show how greatly the wing section affects the minimum speed, curves are plotted against various loadings. The disposition of wings on the airplane slightly affects the lift coefficient, and a few such cases are discussed. Another factor that has an effect on minimum speed is the extra lift exerted by the slip stream on the wings. Also discussed are procedures to be followed by the pilot, especially with regard to stick movements during low speed flight. Also covered are stalling, yaw, rolling moments, lateral control, and the effectiveness of ailerons and rudders.

  3. 76 FR 50111 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-08-12

    ..., 2000, 3000, and 4000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of.... Applicability (c) This AD applies to Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes...

  4. 76 FR 50115 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-08-12

    .... Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes AGENCY: Federal Aviation Administration (FAA.... Applicability (c) This AD applies to Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes...

  5. Performance of two load-limiting subfloor concepts in full-scale general aviation airplane crash tests

    Science.gov (United States)

    Carden, H. D.

    1984-01-01

    Three six-place, low wing, twin-engine general aviation airplane test specimens were crash tested at the langley Impact Dynamics research Facility under controlled free-flight conditions. One structurally unmodified airplane was the baseline airplane specimen for the test series. The other airplanes were structurally modified to incorporate load-limiting (energy-absorbing) subfloor concepts into the structure for full scale crash test evaluation and comparison to the unmodified airplane test results. Typically, the lowest floor accelerations and anthropomorphic dummy occupant responses, and the least seat crushing of standard and load-limiting seats, occurred in the modified load-limiting subfloor airplanes wherein the greatest structural crushing of the subfloor took place. The better performing of the two load-limiting subfloor concepts reduced the peak airplane floor accelerations at the pilot and four seat/occupant locations to -25 to -30 g's as compared to approximately -50 to -55 g's acceleration magnitude for the unmodified airplane structure.

  6. Technical Preparation of the Airplane "Spirit of St. Louis."

    Science.gov (United States)

    Hall, Donald A

    1927-01-01

    Given here is a brief history of the design and construction of the "Spirit of St. Lewis", the airplane that Charles Lindbergh flew solo across the Atlantic. Although the plan was to modify a standard model Ryan M-2, it was quickly determined that modification was less practical than redesign. Colonel Lindbergh's active participation in the design of the aircraft is noted. Given here are the general dimensions, specifications, weight characteristics, and man hours required to build the aircraft.

  7. Light airplane crash tests at three flight-path angles

    Science.gov (United States)

    Castle, C. B.; Alfaro-Bou, E.

    1978-01-01

    Three similar twin engine general aviation airplane specimens were crash tested at Langley impact dynamics research facility at 27 m/sec and at flight-path angles of -15 deg, -30 deg, and -45 deg. Other flight parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  8. Light airplane crash tests at three roll angles

    Science.gov (United States)

    Castle, C. B.; Alfaro-Bou, E.

    1979-01-01

    Three similar twin engine general aviation airplanes were crash tested at the Langley impact dynamics research facility at 27 m/sec and at nominal roll angles of 0 deg, -15 deg, and -30 deg. Other flight parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  9. Light Airplane Crash Test at Three Pitch Angles

    Science.gov (United States)

    Vaughan, Victor L., Jr.; Alfaro-Bou, Emilio

    1979-01-01

    Three similar twin-engine general-aviation airplane specimens were crash tested at the Langley Impact Dynamics Research Facility at 27 m/sec, a flight-path angle of -15deg, and pithch angles of -15deg, 0deg, and 15deg. Other crash parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  10. Light airplane crash tests at three pitch angles

    Science.gov (United States)

    Vaughan, V. L., Jr.; Alfaro-Bou, E.

    1979-01-01

    Three similar twin-engine general aviation airplane specimens were crash tested at an impact dynamics research facility at 27 m/sec, a flight path angle of -15 deg, and pitch angles of -15 deg, 0 deg, and 15 deg. Other crash parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  11. Remarks on building of low-powered airplanes

    Science.gov (United States)

    Langsdorff, Werner V

    1924-01-01

    If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land.

  12. Headache associated with airplane travel: a rare entity.

    Science.gov (United States)

    Cherian, Ajith; Mathew, Mini; Iype, Thomas; Sandeep, P; Jabeen, Afshan; Ayyappan, K

    2013-01-01

    Airplane travel headache is rare and has recently been described as a new form of headache associated with a specific situation. Of the 1,208 patients with primary headaches attending a tertiary care neurology hospital, two (0.16%) patients satisfied the criteria for headache related to airplane travel. Both the patients fulfilled the proposed diagnostic criteria for airplane travel headache. This unique headache had a mean duration of 24 minutes, localized to the medial supraorbital region described as having an intense jabbing or stabbing character that occurred exclusively and maximally during aircraft landing or take-off, following which pain intensity subsided . This rare headache felt on aircraft descent is probably due to the squeeze effect on the frontal sinus wall, when air trapped inside it contracts producing a negative pressure leading to mucosal edema, transudation and intense pain. Use of nasal decongestants either alone or in combination with naproxen sodium prior to ascent and descent abated the headache episodes. Awareness about this unique entity is essential to provide proper treatment and avoid patient suffering.

  13. Numerical simulation of RCS for carrier electronic warfare airplanes

    Directory of Open Access Journals (Sweden)

    Yue Kuizhi

    2015-04-01

    Full Text Available This paper studies the radar cross section (RCS of carrier electronic warfare airplanes. Under the typical naval operations section, the mathematical model of the radar wave’s pitch angle incidence range analysis is established. Based on the CATIA software, considering dynamic deflections of duck wing leading edge flaps, flaperons, horizontal tail, and rudder, as well as aircraft with air-to-air missile, anti-radiation missile, electronic jamming pod, and other weapons, the 3D models of carrier electronic warfare airplanes Model A and Model B with weapons were established. Based on the physical optics method and the equivalent electromagnetic flow method, by the use of the RCSAnsys software, the characteristics of carrier electronic warfare airplanes’ RCS under steady and dynamic flights were simulated under the UHF, X, and S radar bands. This paper researches the detection probability of aircraft by radars under the condition of electronic warfare, and completes the mathematical statistical analysis of the simulation results. The results show that: The Model A of carrier electronic warfare airplane is better than Model B on stealth performance and on discover probability by radar detection effectively.

  14. A Software Defined Radio Based Airplane Communication Navigation Simulation System

    Science.gov (United States)

    He, L.; Zhong, H. T.; Song, D.

    2018-01-01

    Radio communication and navigation system plays important role in ensuring the safety of civil airplane in flight. Function and performance should be tested before these systems are installed on-board. Conventionally, a set of transmitter and receiver are needed for each system, thus all the equipment occupy a lot of space and are high cost. In this paper, software defined radio technology is applied to design a common hardware communication and navigation ground simulation system, which can host multiple airplane systems with different operating frequency, such as HF, VHF, VOR, ILS, ADF, etc. We use a broadband analog frontend hardware platform, universal software radio peripheral (USRP), to transmit/receive signal of different frequency band. Software is compiled by LabVIEW on computer, which interfaces with USRP through Ethernet, and is responsible for communication and navigation signal processing and system control. An integrated testing system is established to perform functional test and performance verification of the simulation signal, which demonstrate the feasibility of our design. The system is a low-cost and common hardware platform for multiple airplane systems, which provide helpful reference for integrated avionics design.

  15. 75 FR 76647 - Special Conditions: Boeing Model 747-8 Airplanes, Systems and Data Networks Security-Isolation or...

    Science.gov (United States)

    2010-12-09

    ... Model 747-8 Airplanes, Systems and Data Networks Security--Isolation or Protection From Unauthorized... information services, than previous 747-8 airplane models. This may allow the exploitation of network security... passenger domain computer systems to the airplane critical systems and data networks. The applicable...

  16. 78 FR 5146 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-01-24

    ... the airplane's flight control laws. The airplane's high-speed protection system limits nose-down pilot... regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues... attitudes; or that the airplane is protected by the flight control laws from getting into non-symmetric...

  17. 78 FR 31836 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-05-28

    ... the airplane's flight control laws. The airplane's high-speed protection system limits nose-down pilot... regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues... attitudes; or that the airplane is protected by the flight control laws from getting into non-symmetric...

  18. 78 FR 63902 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: Normal...

    Science.gov (United States)

    2013-10-25

    ... primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Joe Jacobsen, FAA, Airplane and Flight Crew Interface Branch, Transport Airplane Directorate, Aircraft... displacement maneuvers because of the following: Knowledge that the limit system will protect the structure...

  19. 76 FR 54923 - Special Conditions: Dassault Falcon Model 900 and 900EX Airplanes; Interaction of Systems and...

    Science.gov (United States)

    2011-09-06

    ... 900 and 900EX airplanes, as modified by API, will incorporate the following novel or unusual design... 900 and 900EX airplanes. These airplanes, as modified by Aviation Partners Incorporated (API), will have a novel or unusual design feature associated with the interaction of systems and structures...

  20. Moving Target Information Extraction Based on Single Satellite Image

    Directory of Open Access Journals (Sweden)

    ZHAO Shihu

    2015-03-01

    Full Text Available The spatial and time variant effects in high resolution satellite push broom imaging are analyzed. A spatial and time variant imaging model is established. A moving target information extraction method is proposed based on a single satellite remote sensing image. The experiment computes two airplanes' flying speed using ZY-3 multispectral image and proves the validity of spatial and time variant model and moving information extracting method.

  1. 78 FR 11978 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2013-02-21

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  2. 77 FR 72252 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2012-12-05

    .... FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate...; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  3. 75 FR 65052 - Consensus Standards, Standard Practice for Maintenance of Airplane Electrical Wiring Systems

    Science.gov (United States)

    2010-10-21

    ... Practice for Maintenance of Airplane Electrical Wiring Systems AGENCY: Federal Aviation Administration, DOT...'s F2799-09 Standard Practice for Maintenance of Airplane Electrical Wiring Systems (Standard Practice) as an acceptable means of compliance to 14 CFR part 23 sections concerning electrical wiring...

  4. 75 FR 65051 - Consensus Standards, Standard Practice for Inspection of Airplane Electrical Wiring Systems

    Science.gov (United States)

    2010-10-21

    ... Practice for Inspection of Airplane Electrical Wiring Systems AGENCY: Federal Aviation Administration, DOT...'s F2696-08 Standard Practice for Inspection of Airplane Electrical Wiring Systems (Standard Practice) as an acceptable means of compliance to 14 CFR part 23 sections concerning electrical wiring systems...

  5. 75 FR 68688 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-11-09

    ... airplanes. This AD requires changing the lower fixed leading edge panel assemblies immediately outboard of... have drain holes and unsealed panel assemblies in the fixed leading edge adjacent to the inboard end of... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle...

  6. 75 FR 31329 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-06-03

    ... airplanes. This proposed AD would require changing the lower fixed leading edge panel assemblies immediately... service that have drain holes and unsealed panel assemblies in the fixed leading edge adjacent to the... Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207...

  7. 78 FR 76248 - Special Conditions: Airbus, Model A350-900 Series Airplane; Side Stick Controller

    Science.gov (United States)

    2013-12-17

    ..., Model A350-900 Series Airplane; Side Stick Controller AGENCY: Federal Aviation Administration (FAA), DOT... associated with side stick controllers which require limited pilot force because they are operated by only... A350-900 series airplane is equipped with two side stick controllers instead of the conventional...

  8. RESULTS OF AIRPLANE TU-204-300 OPERATED BY "VLADIVOSTOK AVIA" COMPANY FUEL FLOW MONITIRING

    Directory of Open Access Journals (Sweden)

    G. E. Maslennikova

    2014-01-01

    Full Text Available This article describes the results obtained from continuous monitoring of fuel flow on the airplanes Tu-204-300, operated by the aircompany "Vladivostok Avia". The reasons for the change in the cost of each copy of airplane and changes in fuel characteristics due to pilots manner of flying.

  9. 14 CFR Appendix E to Part 91 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications E... Appendix E to Part 91—Airplane Flight Recorder Specifications Parameters Range Installed system 1 minimum... instruments (except altimeters) of acceptable quality to fly the aircraft the recording system excluding these...

  10. A pilot's opinion of the F-8 digital fly-by-wire airplane

    Science.gov (United States)

    Krier, G. E.

    1976-01-01

    The handling qualities of the F-8 digital fly by wire airplane are evaluated by using the Cooper-Harper rating scale. The reasons for the ratings are given, as well as a short description of the flying tasks. It was concluded that the handling qualities of the airplane were good in most situations, although occasional ratings of unsatisfactory were given.

  11. 14 CFR Appendix B to Part 135 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications B.... B Appendix B to Part 135—Airplane Flight Recorder Specifications Parameters Range Installed system 1... aircraft instruments (except altimeters) of acceptable quality to fly the aircraft the recording system...

  12. 14 CFR 121.505 - Flight time limitations: Two pilot crews: airplanes.

    Science.gov (United States)

    2010-01-01

    ...: airplanes. 121.505 Section 121.505 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Operations § 121.505 Flight time limitations: Two pilot crews: airplanes. (a) If a certificate holder conducting supplemental operations schedules a pilot to fly more than eight hours during any 24 consecutive...

  13. 77 FR 58761 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2012-09-24

    ... Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 airplanes, and... adding the following new AD: 2012-19-06 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39...

  14. 76 FR 64785 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2011-10-19

    ... Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes AGENCY: Federal Aviation... new AD: 2011-21-15 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39-16838. Docket No... Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135ER, -135KE, -135KL, and -135LR airplanes...

  15. 76 FR 28 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-01-03

    ... fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. Since these... allow the public the chance to comment on these proposed changes. DATES: We must receive comments on... and consequent loss of the airplane. Compliance (f) Comply with this AD within the compliance times...

  16. 76 FR 30043 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-05-24

    ... proposing this AD to reduce the chance of unintended lateral oscillations near touchdown, which could result in loss of lateral control of the airplane, and consequent airplane damage or injury to flight crew... landing. Unintended lateral oscillations near touchdown could result in loss of lateral control of the...

  17. 76 FR 18664 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2011-04-05

    ... explosion and consequent loss of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on... consequent loss of the airplane. Compliance (f) Comply with this AD within the compliance times specified...

  18. 77 FR 48473 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-08-14

    ... and consequent loss of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on... with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane...

  19. 76 FR 10529 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From...

    Science.gov (United States)

    2011-02-25

    ... architecture and connectivity capabilities of the airplane's computer systems and networks, which may allow... will be an all-new, two- engine jet transport airplane with an executive cabin interior. The maximum... will incorporate the following novel or unusual design features: Digital systems architecture composed...

  20. 78 FR 11609 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Landing Pitchover Condition

    Science.gov (United States)

    2013-02-19

    ... aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is designed for 8... Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind...