WorldWideScience

Sample records for model sd3 airplanes

  1. 75 FR 12154 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2010-03-15

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Short Brothers PLC... Brothers PLC, Airworthiness, P.O. Box 241, Airport Road, Belfast, BT3 9DZ Northern Ireland; telephone +44(0... 16, 2006) and adding the following new AD: Short Brothers PLC: Docket No. FAA-2010-0225;...

  2. 75 FR 46864 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2010-08-04

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Short Brothers PLC... this proposed AD, contact Short Brothers PLC, Airworthiness, P.O. Box 241, Airport Road, Belfast, BT3... new AD: Short Brothers PLC: Docket No. FAA-2010-0225; Directorate Identifier 2009-NM-203-AD....

  3. 76 FR 1985 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2011-01-12

    ... aviation product. The MCAI describes the unsafe condition as Subsequent to accidents involving Fuel Tank... revising the AWL section. The MCAI states: ] Subsequent to accidents involving Fuel Tank System explosions... (MCAI) states: Subsequent to accidents involving Fuel Tank System explosions in flight * * * and...

  4. 75 FR 60667 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2010-10-01

    ... burning of wires have been reported on four Model 45 airplanes. In all four incidents, the wire damage was... from within touching distance unless otherwise specified. A mirror may be necessary to ensure...

  5. 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.

  6. 76 FR 10528 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Isolation or...

    Science.gov (United States)

    2011-02-25

    ... airplane models. This may allow the exploitation of network security vulnerabilities and increase ] risks... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Isolation or Protection From Unauthorized Passenger Systems Access AGENCY...

  7. 76 FR 36861 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Isolation or...

    Science.gov (United States)

    2011-06-23

    ... airplane models. This may allow the exploitation of network security vulnerabilities and increase risks... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Isolation or Protection From Unauthorized Passenger Systems Access AGENCY...

  8. Design Oriented Structural Modeling for Airplane Conceptual Design Optimization

    Science.gov (United States)

    Livne, Eli

    1999-01-01

    The main goal for research conducted with the support of this grant was to develop design oriented structural optimization methods for the conceptual design of airplanes. Traditionally in conceptual design airframe weight is estimated based on statistical equations developed over years of fitting airplane weight data in data bases of similar existing air- planes. Utilization of such regression equations for the design of new airplanes can be justified only if the new air-planes use structural technology similar to the technology on the airplanes in those weight data bases. If any new structural technology is to be pursued or any new unconventional configurations designed the statistical weight equations cannot be used. In such cases any structural weight estimation must be based on rigorous "physics based" structural analysis and optimization of the airframes under consideration. Work under this grant progressed to explore airframe design-oriented structural optimization techniques along two lines of research: methods based on "fast" design oriented finite element technology and methods based on equivalent plate / equivalent shell models of airframes, in which the vehicle is modelled as an assembly of plate and shell components, each simulating a lifting surface or nacelle / fuselage pieces. Since response to changes in geometry are essential in conceptual design of airplanes, as well as the capability to optimize the shape itself, research supported by this grant sought to develop efficient techniques for parametrization of airplane shape and sensitivity analysis with respect to shape design variables. Towards the end of the grant period a prototype automated structural analysis code designed to work with the NASA Aircraft Synthesis conceptual design code ACS= was delivered to NASA Ames.

  9. 78 FR 65153 - Special Conditions: Learjet Model 45 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-10-31

    ... Learjet Model 45 series airplanes. The Model 45 series airplanes are swept-wing aircraft equipped with two... type certification basis for Learjet Model 45 series airplanes. System Security Protection for Aircraft... ensure that continued airworthiness of the aircraft is maintained, including all...

  10. 76 FR 10529 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From...

    Science.gov (United States)

    2011-02-25

    ... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From Unauthorized External Access AGENCY: Federal Aviation... systems and networks may result in security vulnerabilities to the airplane's systems. The applicable...

  11. 76 FR 36863 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From...

    Science.gov (United States)

    2011-06-23

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From Unauthorized External Access AGENCY: Federal Aviation... result in security vulnerabilities to the airplane's systems. The applicable airworthiness regulations do...

  12. 75 FR 47199 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30...

    Science.gov (United States)

    2010-08-05

    ... Douglas Corporation Model DC- 9-10 Series Airplanes, DC-9-30 Series Airplanes, DC-9-81 (MD-81) Airplanes, DC-9-82 (MD-82) Airplanes, DC-9-83 (MD-83) Airplanes, DC-9- 87 (MD-87) Airplanes, MD-88 Airplanes... directive (AD), which applies to all McDonnell Douglas Model DC-9-10 series airplanes, DC-9-30...

  13. 76 FR 10215 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2011-02-24

    ... pilot and copilot circuit breaker panels caused by a short circuit between chafed wires.'' We agree with.... Model 45 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We... breaker panels caused by a short circuit between chafed wiring and the circuit breaker panel...

  14. 76 FR 30294 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane Pilot Compartment View...

    Science.gov (United States)

    2011-05-25

    ... INFORMATION CONTACT: Loran Haworth, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind... type certificate for their new Model G250 airplane. The G250 is an 8-10 passenger (19 maximum), twin... nautical miles. Airplane dimensions are 61.69-foot wing span, 66.6-foot overall length, and 20.8-foot...

  15. 75 FR 45075 - Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes

    Science.gov (United States)

    2010-08-02

    ... information system and the airplane flight manuals. The FAA incorrectly referenced the applicability for Model EA500 airplanes with certain serial numbers (SNs) of this proposed AD as ``000039 through 000104, 000113... incorporating changes to the electronic flight information system and the airplane flight manuals. In the...

  16. 78 FR 70848 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-27

    .... The Boeing Model 777-200 airplanes are long-range, wide-body, twin-engine jet airplanes with a maximum... networks connected to systems that perform functions required for the safe operation of the airplane. This... allow increased connectivity to, or access by, external airplane sources, airline operations,...

  17. 78 FR 75451 - Special Conditions: Cessna Model 750 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-12-12

    ... Model 750 is a twin-engine pressurized executive jet airplane with standard seating provisions for 14... features: digital systems architecture composed of several connected networks. The proposed...

  18. 78 FR 63847 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Airplane Electronic System Security...

    Science.gov (United States)

    2013-10-25

    ... architecture for the Embraer Model EMB-550 series of airplanes is composed of several connected networks. This... (aircraft control functions); 2. Airline business and administrative support (airline information services... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Embraer S.A., Model EMB-550...

  19. 75 FR 38017 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30...

    Science.gov (United States)

    2010-07-01

    ... Corporation Model DC- 9-10 Series Airplanes, DC-9-30 Series Airplanes, DC-9-81 (MD-81) Airplanes, DC-9-82 (MD-82) Airplanes, DC-9-83 (MD-83) Airplanes, DC-9- 87 (MD-87) Airplanes, MD-88 Airplanes, and MD-90-30..., Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. Hand Delivery: U.S. Department...

  20. Ditching Investigation of a 1/15-Scale Model of the Convair-Liner Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1950-01-01

    A ditching investigation of a model of the Convair-Liner airplane was made to observe the behavior and determine the safest procedure for making an emergency water landing. The ditching model was designed and constructed by the National Advisory Committee for Aeronautics. Design information on the airplane was furnished by the Consolidated Vultee Aircraft Corporation. A three-view drawing of the airplane is shown. The investigation was made in calm water at the Langley tank no. 2 monorail.

  1. 76 FR 27872 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model P-180 Airplanes

    Science.gov (United States)

    2011-05-13

    ... INDUSTRIES S.p.A Model P- 180 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ] ACTION: Final... known U.S. owners and operators of PIAGGIO AERO INDUSTRIES S.p.A (Piaggio) Model PIAGGIO P-180 airplanes... fuselage on a number of Piaggio Model P.180 aeroplanes, which resulted in jamming of the flight...

  2. 78 FR 63848 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Sidestick Controllers

    Science.gov (United States)

    2013-10-25

    ...-wire elevators, ailerons and rudder, controlled by the pilot or copilot sidestick. The Model EMB-550 airplane will use passive sidestick controllers for pitch and roll control instead of a conventional... following novel or unusual design features: The Model EMB-550 airplane has a sidestick controller for pitch...

  3. 78 FR 73993 - Special Conditions: Cessna Model 680 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-12-10

    ... part of the type certification basis for Cessna Model 680 Series airplanes. System Security Protection... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Cessna Model 680 Series Airplanes; Aircraft Electronic System Security Protection From Unauthorized External Access AGENCY: Federal Aviation...

  4. 75 FR 61655 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-10-06

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... directive (AD) for all Piper Aircraft, Inc. (Piper) Model PA-28-161 airplanes equipped with Thielert.... Piper Model PA-28-161 airplanes modified by STC No. SA03303AT have a similar unsafe design feature that...

  5. 78 FR 76251 - Special Conditions: Airbus, Model A350-900 Series Airplane; Electronic System Security Protection...

    Science.gov (United States)

    2013-12-17

    ...; Electronic System Security Protection From Unauthorized External Access AGENCY: Federal Aviation... conditions for Airbus Model A350- 900 series airplanes. These airplanes will have a novel or unusual design feature associated with electronic system security protection from unauthorized external access....

  6. 78 FR 6195 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection...

    Science.gov (United States)

    2013-01-30

    ... jet airplanes designed for corporate flight, fractional, charter, and private owner operations. The... turbofan engines mounted on aft fuselage pylons. Each engine produces approximately 6,540 pounds of thrust... function into the engine of the Model EMB-550 airplane. It has a full authority digital electronic...

  7. 76 FR 8314 - Special Conditions: Gulfstream Model GVI Airplane; Operation Without Normal Electric Power

    Science.gov (United States)

    2011-02-14

    ..., 2006. The Gulfstream Model GVI airplane will be an all-new, two- engine jet transport airplane with an... traditional designs, the GVI must be designed for operation with the normal sources of engine and auxiliary...; Operation Without Normal Electric Power AGENCY: Federal Aviation Administration (FAA), DOT. ACTION:...

  8. 76 FR 65105 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Isolation or Aircraft...

    Science.gov (United States)

    2011-10-20

    ... passenger airplane. The Gulfstream Model GIV-X is a two-engine jet transport airplane with a maximum takeoff... Operations, M-30, U.S. Department of Transportation (DOT), 1200 New Jersey Avenue, SE., Room W12-140, West... Operations in Room W12-140 of the West Building Ground Floor at 1200 New Jersey Avenue, SE., Washington,...

  9. 76 FR 9265 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System: Control...

    Science.gov (United States)

    2011-02-17

    ... Model GVI Airplane; Electronic Flight Control System: Control Surface Position Awareness AGENCY: Federal... transport category airplanes. These design features include an electronic flight control system. The... The GVI has an electronic flight control system and no direct coupling from the cockpit controller to...

  10. 76 FR 38062 - Airworthiness Directives; Gulfstream Aerospace LP Model Galaxy and Gulfstream 200 Airplanes

    Science.gov (United States)

    2011-06-29

    ... LP Model Galaxy and Gulfstream 200 airplanes, certificated in any category, serial numbers 219 through 231 inclusive. Subject (d) Air Transport Association (ATA) of America Code 51: Standard Practices... A, dated January 25, 2010. (2) For airplanes having serial numbers 224 through 231 inclusive: Do the...

  11. 78 FR 26280 - Special Conditions: Embraer, S.A., Model EMB-550 Airplane; Side-Facing Seats; Installation of...

    Science.gov (United States)

    2013-05-06

    ... owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The...: Jayson Claar, FAA, Airframe and Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft.... applied for a type certificate for their new Model EMB-550 airplane. The Model EMB-550 airplane is...

  12. 78 FR 76254 - Special Conditions: Airbus, Model A350-900 Series Airplane; Control Surface Awareness and Mode...

    Science.gov (United States)

    2013-12-17

    ... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Airbus, Model A350-900 Series Airplane... Model A350-900 series airplanes. These airplanes will have a novel or unusual design feature(s... sending written comments, data, or views. The most helpful comments reference a specific portion of...

  13. 76 FR 63851 - Special Conditions: Learjet Inc., Model LJ-200-1A10 Airplane, Pilot-Compartment View Through...

    Science.gov (United States)

    2011-10-14

    ... INFORMATION CONTACT: Paul Bernado, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind... January 11, 2008, Learjet Inc. applied for a type certificate for a new Model LJ-200-1A10 airplane. This airplane is 68 feet long with a 65-foot wing span and accommodates up to 10 passengers. The LJ-...

  14. 77 FR 5990 - Special Conditions: Learjet Inc., Model LJ-200-1A10 Airplane, Pilot-Compartment View Through...

    Science.gov (United States)

    2012-02-07

    ..., Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington... January 11, 2008, Learjet Inc. applied for a type certificate for a new Model LJ-200-1A10 airplane. This airplane is 68 feet long with a 65-foot wing span and accommodates up to 10 passengers. The LJ-...

  15. 78 FR 70849 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-27

    .... The Boeing Model 777-200 airplanes are long-range, wide-body, twin-engine jet airplanes with a maximum... networks connected to systems that perform functions required for the safe operation of the airplane. This... required for safe flight and operations. 2. The applicant must establish appropriate procedures to...

  16. 76 FR 28376 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-05-17

    ... 4000 airplanes, certificated in any category, all serial numbers. Note 1: This AD requires revisions to... airplane. Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. Reason (e) The mandatory.... Inspection and Installation for Model F.28 Airplanes Serial Numbers 11003 Through 11041 and 11991 Through...

  17. 75 FR 76647 - Special Conditions: Boeing Model 747-8 Airplanes, Systems and Data Networks Security-Isolation or...

    Science.gov (United States)

    2010-12-09

    ... 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...

  18. Modeling and analyzing characteristics of self-infrared radiation on airplane-skin

    Science.gov (United States)

    Li, Zhaozhao; Wu, Wenyuan; Wu, Chengguo; Yang, Yuntao; Huang, Yanhua; Sunxiaobo, Zhuan

    2016-01-01

    The characteristic of the self-infrared radiation of airplane-skin is very important for the stealth performance of airplane. Based on the theory of the airplane-skin temperature field, the distribution of the atmospheric temperature field and the principle of the black-body radiation function the self-infrared radiation model was established. In specified flight conditions, the influence of the atmospheric temperature, the speed of flight, the emissivity and the sight angle detection on the self-infrared radiation of the airplane skin were analyzed. Through the simulation of infrared radiation, some results under different flight states are obtained. The simulation results show that skin infrared radiation energy mainly concentrate on the far infrared wavebands, and various factors have different effects on the infrared radiation of skin. This conclusion can help reduce the infrared radiation and improve the stealth performance of airplane in the engineering design and the selection of flight conditions.

  19. 78 FR 75453 - Special Conditions: Cessna Model 750 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-12-12

    ... September 10, 2010, Cessna applied for a change to Type Certificate No. T00007WI in the digital systems architecture in the Cessna Model 750 series airplanes. The Model 750 is a twin-engine pressurized executive...

  20. 75 FR 30282 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-06-01

    .... Applicability (c) This AD applies to Model 11E airplanes, all serial numbers, that are certificated in any category. Subject (d) Air Transport Association of America (ATA) Code 27: Flight Controls. Unsafe Condition...

  1. 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... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  2. 75 FR 71536 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-11-24

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

  3. 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,...

  4. 75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-09-28

    ... 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...

  5. 75 FR 30272 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-06-01

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

  6. 75 FR 16660 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-04-02

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

  7. 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... found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  8. 75 FR 52480 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-08-26

    ... after 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,...

  9. 76 FR 4216 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-01-25

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

  10. Ditching Investigation of a 1/14-Scale Model of the Northrop C-125 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Windham, John O.

    1950-01-01

    An investigation of a 1/14-scale dynamically similar model of the Northrop C-125 airplane was made to determine the ditching characteristics and proper ditching technique for the airplane. Various conditions of damage, landing attitude, flap setting, and speed were investigated. The behavior of the model was determined from visual observations, motion-picture records, and time-history deceleration records. The results of the investigation are presented in table form, photographs, and curves. It was concluded that the airplane should be ditched at a nose-high landing attitude (near 8 deg) with flaps full down. The fixed landing gear will cause the airplane to dive. The fuselage will be damaged and will probably flood rapidly. Longitudinal decelerations will be about 4g and the length of landing run will be about two fuselage lengths. If the main landing gear could be jettisonable or retractable the ditching characteristics would be greatly improved.

  11. Ditching Tests of a 1/18-Scale Model of the Lockheed Constellation Airplane with Speedpak Attached

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1949-01-01

    Results of previous model ditching tests of the Lockheed Constellation airplane are reported. Further model tests have been made to determine the probable ditching characteristics and the proper ditching technique for the airplane with the Speedpak attached. This paper presents the results of these tests. Design information was furnished by the Lockheed Aircraft Corporation. A three-vies drawing of the airplane with the Speedpak attached is shown. The tests were made in calm water at the Langley tank no.2 monorail.

  12. Self-Propelled Pedestrian Dynamics Model: Application to Passenger Movement and Infection Propagation in Airplanes

    CERN Document Server

    Namilae, S; Mubayi, A; Scotch, M; Pahle, R

    2016-01-01

    Reducing the number of contacts between passengers on an airplane can potentially curb the spread of infectious diseases. In this paper, a social force based pedestrian movement model is formulated and applied to evaluate the movement and contacts among passengers during boarding and deplaning of an airplane. Within the social force modeling framework, we introduce location dependence on the self-propelling momentum of pedestrian particles. The model parameters are varied over a large design space and the results are compared with experimental observations to validate the model. This model is then used to assess the different approaches to minimize passenger contacts during boarding and deplaning of airplanes. We find that smaller aircrafts are effective in reducing the contacts between passengers. Column wise deplaning and random boarding are found to be two strategies that reduced the number of contacts during passenger movement, and can potentially lower the likelihood of infection spread.

  13. Self-propelled pedestrian dynamics model: Application to passenger movement and infection propagation in airplanes

    Science.gov (United States)

    Namilae, S.; Srinivasan, A.; Mubayi, A.; Scotch, M.; Pahle, R.

    2017-01-01

    Reducing the number of contacts between passengers on an airplane can potentially curb the spread of infectious diseases. In this paper, a social force based pedestrian movement model is formulated and applied to evaluate the movement and contacts among passengers during boarding and deplaning of an airplane. Within the social force modeling framework, we introduce location dependence on the self-propelling momentum of pedestrian particles. The model parameters are varied over a large design space and the results are compared with experimental observations to validate the model. This model is then used to assess the different approaches to minimize passenger contacts during boarding and deplaning of airplanes. We find that smaller aircrafts are effective in reducing the contacts between passengers. Column wise deplaning and random boarding are found to be two strategies that reduced the number of contacts during passenger movement, and can potentially lower the likelihood of infection spread.

  14. 75 FR 12667 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2010-03-17

    ... on both actuators on one flap, resulting in flap asymmetry and loss of control of the airplane. DATES... information identified in this AD, contact Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942... received, and other information. The street address for the Docket Office (telephone 800-647-5527) is...

  15. Scaling behavior of an airplane-boarding model.

    Science.gov (United States)

    Brics, Martins; Kaupužs, Jevgenijs; Mahnke, Reinhard

    2013-04-01

    An airplane-boarding model, introduced earlier by Frette and Hemmer [Phys. Rev. E 85, 011130 (2012)], is studied with the aim of determining precisely its asymptotic power-law scaling behavior for a large number of passengers N. Based on Monte Carlo simulation data for very large system sizes up to N=2(16)=65536, we have analyzed numerically the scaling behavior of the mean boarding time and other related quantities. In analogy with critical phenomena, we have used appropriate scaling Ansätze, which include the leading term as some power of N (e.g., [proportionality]N(α) for ), as well as power-law corrections to scaling. Our results clearly show that α=1/2 holds with a very high numerical accuracy (α=0.5001±0.0001). This value deviates essentially from α=/~0.69, obtained earlier by Frette and Hemmer from data within the range 2≤N≤16. Our results confirm the convergence of the effective exponent α(eff)(N) to 1/2 at large N as observed by Bernstein. Our analysis explains this effect. Namely, the effective exponent α(eff)(N) varies from values about 0.7 for small system sizes to the true asymptotic value 1/2 at N→∞ almost linearly in N(-1/3) for large N. This means that the variation is caused by corrections to scaling, the leading correction-to-scaling exponent being θ≈1/3. We have estimated also other exponents: ν=1/2 for the mean number of passengers taking seats simultaneously in one time step, β=1 for the second moment of t(b), and γ≈1/3 for its variance.

  16. Ditching Tests of Two Models of the Army B-36 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Cederborg, Gibson, A.

    1948-01-01

    The ditching characteristics of the Army B-36 airplane were determined by testing 1/20- and 1/30-scale dynamic models in calm water in Langley tank no. 2 and at the outdoor catapult. The scope of the tests consisted of ditching the models at various conditions of simulated damage, landing attitudes, and speeds, with various flap settings using several degrees of restraint of the flap hinges. The ditching behavior was evaluated from recordings of deceleration, length of run, and motions of the models. The results showed that the airplane should be ditched at an attitude of about 9 deg with flaps full down. The probable ditching behavior will be a smooth run with a maximum longitudinal deceleration of 3g to 4g and a landing run of 4 to 5 fuselage lengths. Structural failure of the underside of the fuselage will not seriously affect the behavior of the airplane.

  17. 75 FR 3127 - Airworthiness Directives; Thrush Aircraft, Inc. Model 600 S2D and S2R Series Airplanes

    Science.gov (United States)

    2010-01-20

    ... wing front lower spar caps in Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type..., which applies to Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type certificate... Environmental Conditions Avenger Aircraft and Services (Avenger) states the life limits for the wing front...

  18. 76 FR 7694 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-02-11

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The..., etc. for PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 airplanes. As published, the...

  19. Modeling the Aerodynamics and Performances of a Historic Airplane: the Spanish

    Directory of Open Access Journals (Sweden)

    A. González-Betes

    2003-01-01

    Full Text Available The process of modeling the aerodynamics and performances of a historic airplane is very similar to the conceptual and preliminary design phases of a new plane, with the advantage of knowing the configuration and that the airplane was airworthy; thus it is unnecessary to outline and assess many different alternatives. However, the drag polar, the real performances, stability features, etc, are still unknown. For various reasons (in particular because of two World Wars, or the Civil War in the Spanish case most details of many historical airplanes have been lost.In the present research work, the situation is as follows. In June 1933 the "Cuatro Vientos", a Spanish-built Bréguet XIX Super TR, flew non-stop from Seville to Cuba; a distance of 7500 km (about 4100 nautical miles in around 40 hours. A few days later, in a far less complicated stage between Havana and Mexico, the airplane was lost with its occupants to a storm in the Yucatan peninsula.The modeling considered in this paper starts by addressing the aerodynamic modifications introduced in the airplane for the extremely long flight. Then, with the help of old and present day aerodynamic data and methods the drag polar is estimated. The available engine data is completed and extrapolated to obtain information on power and fuel consumption. Finally, all this data is integrated to provide a reliable and technically sound reproduction of the Seville-Cuba flight.

  20. Ditching Investigation of a 1/14-Scale Model of the XC-123 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1951-01-01

    An investigation of a 1/14 scale dynamically similar model of the XC-123 airplane was made in calm water to observe the ditching behavior and to determine the safest procedure for making an emergency water landing, The behavior of the model was determined from motion-picture records, time-history deceleration records, and visual observations, Various scale-strength simulations were made to determine if the fuselage would be damaged and, if so, to determine the extent and location, It was concluded that the airplane should be ditched at a nose-high attitude of about 140 with the landing flaps down 45 deg., The airplane will probably make a porpoising run of about 415 feet (full scale) and the maximum longitudinal decelerations will be about 1 g, The fuselage bottom probably will be damaged and the fuselage will fill with water and sink to the wing level.

  1. 76 FR 65103 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Aircraft Electronic...

    Science.gov (United States)

    2011-10-20

    ... configuration in the Gulfstream Model GIV-X passenger airplane. The Gulfstream Model GIV-X is a two-engine jet.... Mail: Send comments to Docket Operations, M-30, U.S. Department of Transportation (DOT), 1200 New... by Courier: Take comments to Docket Operations in Room W12-140 of the West Building Ground Floor...

  2. 75 FR 7945 - Airworthiness Directives; Augustair, Inc. Models 2150, 2150A, and 2180 Airplanes

    Science.gov (United States)

    2010-02-23

    ... attachment area or if the airplane was modified with a different engine model or propeller model than...) and 1 CFR part 51. (2) For service information identified in this AD, contact Augustair, Inc., 1809... incorporated by reference for this AD at the National Archives and Records Administration (NARA)....

  3. 77 FR 75071 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Electrical/Electronic Equipment Bay...

    Science.gov (United States)

    2012-12-19

    ...; Electrical/Electronic Equipment Bay Fire Detection and Smoke Penetration AGENCY: Federal Aviation... conditions for the Embraer S.A. Model EMB-550 airplane. This airplane will have novel or unusual design features, specifically distributed electrical and electronic equipment bays in pressurized areas of...

  4. 75 FR 67639 - Airworthiness Directives; Piaggio Aero Industries S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-11-03

    ... Industries S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airplane Flight Manual, stating that the towing bar P/N 01-1227-0000 or similar ferromagnetic masses are... maintenance requirements and/or airworthiness limitations developed by Piaggio Aero Industries S.p.A....

  5. 76 FR 81360 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Operation Without Normal...

    Science.gov (United States)

    2011-12-28

    ... G280 Airplane, Operation Without Normal Electrical Power AGENCY: Federal Aviation Administration (FAA... associated with operation without normal electrical power. The applicable airworthiness regulations do not... Model G280 will have a novel or unusual design feature associated with operation without...

  6. 75 FR 80735 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection

    Science.gov (United States)

    2010-12-23

    ... application date to September 28, 2006. The Gulfstream Model GVI airplane will be an all-new, two- engine jet... operation, and cannot be overridden by the flight crew. The system's application of this angle of attack... required for normal maneuvering including an all-engines operating takeoff plus a suitable margin to...

  7. 75 FR 8467 - Airworthiness Directives; BAE SYSTEMS (Operations) Limited Model ATP Airplanes

    Science.gov (United States)

    2010-02-25

    ... (Operations) Limited Model ATP Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... tasks were introduced by Service Bulletin (SB) ATP-51-002 * * *. As it was determined that these... environmental inspections for the fuselage. These additional tasks were introduced by Service Bulletin (SB)...

  8. 75 FR 75 - Special Conditions: Boeing Model 787-8 Airplane; Overhead Crew Rest Compartment

    Science.gov (United States)

    2010-01-04

    ... Model 787-8 Airplane; Overhead Crew Rest Compartment AGENCY: Federal Aviation Administration (FAA), DOT... installation of an overhead crew rest compartment. The applicable airworthiness regulations do not contain... Design Features Crew rest compartments have been installed and certificated on several Boeing...

  9. 75 FR 12468 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-03-16

    ... With the next 10 Follow Quartz aileron pushrod bearings. hours time-in- Mountain Aerospace service (TIS... aileron Within 50 hours TIS Follow Quartz pushrod bearings. after the cleaning Mountain Aerospace and... Aerospace, Inc. Model 11E Airplanes AGENCY: Federal Aviation Administration (FAA), Department...

  10. 75 FR 39472 - Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes

    Science.gov (United States)

    2010-07-09

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eclipse Aerospace... directive (AD) for certain Eclipse Aerospace, Inc. (Eclipse) Model EA500 airplanes. This proposed AD would... proposed AD, contact Eclipse Aerospace, Incorporated, 2503 Clark Carr Loop, SE., Albuquerque, New...

  11. 75 FR 5690 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A. Model P-180 Airplanes

    Science.gov (United States)

    2010-02-04

    ... INDUSTRIES S.p.A. Model P- 180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the NPRM...: 2010-03-04 PIAGGIO AERO INDUSTRIES S.p.A.: Amendment 39-16187; Docket No. FAA-2009-1081;...

  12. 76 FR 19719 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-04-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... Friday, except Federal holidays. For service information identified in this proposed AD, contact Saab AB...

  13. 75 FR 77796 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2010-12-14

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... the rear spar upper cap of the horizontal stabilizer of SAAB 2000 aeroplanes. The affected areas are...

  14. 76 FR 41665 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-07-15

    ...-111-AD; Amendment 39-16747; AD 2011-14-12] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... potentially unsafe condition, SAAB has published Service Bulletin (SB) 2000-32-073, describing a inspection of...

  15. 76 FR 31508 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-06-01

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... pressure bulkhead of SAAB 2000 aeroplanes, located on the rear side of the bulkhead at the bottom outboard...

  16. 76 FR 13072 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-03-10

    ...-145-AD; Amendment 39-16623; AD 2011-05-13] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... upper cap of the horizontal stabilizer of SAAB 2000 aeroplanes. The affected areas are adjacent to the...

  17. 76 FR 14346 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes

    Science.gov (United States)

    2011-03-16

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... been reportedly found on DA 42 Main Landing Gear (MLG) Damper-to-Trailing Arm joints during...

  18. 76 FR 31457 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes

    Science.gov (United States)

    2011-06-01

    ... (76 FR 14346). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant... Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation Administration (FAA), Department...

  19. Ditching Investigation of a 1/24-Scale Model of the Douglas C-124 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Windham, John O.

    1951-01-01

    An investigation of a 1/24- scale dynamically similar model of the Douglas C-124 airplane was made to determine the ditching characteristics and proper technique for ditching the airplane. Various conditions of damage, landing attitude, flap setting, and speed were investigated. The behavior of the model was determined from visual observations, motion- picture records, and time-history deceleration records. The results of the investigation are presented in table form, photographs, and curves. It was concluded on the basis of results from model tests with scale-strength bottoms (equivalent to 1150 pounds per square foot, full scale) that the airplane should be ditched at a medium nose-high landing attitude (near 7deg) with flaps full down. The airplane will probably make a smooth run with considerable damage resulting to the fuselage bottom just forward of the wing, but it is not likely that the water inflow will be overwhelming to personnel provided they are not in the belly compartment. Longitudinal decelerations in calm water will be about 2 1/2g and the landing run will be about four fuselage lengths.

  20. Ditching Investigation of a 1/24-Scale Model of the Boeing B-47 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Windham, John O.

    1950-01-01

    An investigation of a 1/24-scale dynamically similar model of the Boeing B-47 airplane was made to determine the ditching characteristics and proper ditching technique for the airplane. Various conditions of damage, landing attitude, flap setting, and speed were investigated. The behavior of the model was determined from visual observations, motion-picture records, and time-history deceleration records. The results of the investigation are presented in table form, photographs, and curves. The airplane should be ditched at the lowest speed and highest attitude consistent with adequate control; the flaps should be full down. The airplane will probably make a deep but fairly smooth run. The fuselage bottom will be damaged and partially filled with water; consequently, crew members should be assigned ditching stations near an exit in the upper or forward part of the fuselage. The nacelles may be expected to be torn away from the wing. In calm water the maximum decelerations will be about 3g and the landing run will be about 6 fuselage lengths.

  1. Ditching Investigation of a 1/20-Scale Model of the Boeing Stratocruiser Airplane (C-97)

    Science.gov (United States)

    Fisher, Lloyd J.; Windham, John O.

    1955-01-01

    An investigation of a 1/20-scale dynamically similar model of the Boeing Stratocruiser airplane (C-97) was made to determine the ditching characteristics and proper technique for ditching the airplane. Scale-strength bottoms were used to determine probable damage to the fuselage and the effect of damage on behavior. The behavior of the model was determined from visual observations, motion-picture records, and time-history deceleration records. Data are presented in a table, photographs, and curves. It was concluded that the airplane should be ditched at a medium nose-high landing attitude (near 6 deg) with landing flaps full down. The airplane will probably make a smooth run of medium depth with light spray and may even trim up slightly in the water. The fuselage will probably be damaged and the lower compartment filled with water. In calm water, the maximum longitudinal deceleration will be about 4g and the landing run will be about four fuselage lengths.

  2. Ditching Tests of a 1/20-Scale Model of the Northrop B-35 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.

    1948-01-01

    Tests of a 1/20-scale dynamically similar model of the Northrop B-35 airplane were made to study its ditching characteristics. The model was ditched in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds,and conditions of damage were simulated during the investigation. The ditching characteristics were determined by visual observation and from motion-picture records and time-history acceleration records. Both longitudinal and lateral accelerations were measured. Results are given in tabular form and time-history acceleration curves and sequence photographs are presented. Conclusions based on the model investigation are as follows: 1. The best ditching of the B-35 airplane probably can be made by contacting the water in a near normal landing attitude of about 9 deg with the landing flaps full down so as to have a low horizontal speed. 2. The airplane usually will turn or yaw but the motion will not be violent. The maximum lateral acceleration will be about 2g. 3. If the airplane does not turn or yaw immediately after landing, it probably will trim up and then make a smooth run or porpoise slightly. The maximum longitudinal decelerations that will be encountered are about 6g or 7g. 4. Although the decelerations are not indicated to be especially large, the construction of the airplane is such that extensive damage is to be expected, and it probably will be difficult to find ditching stations where crew members can adequately brace themselves and be reasonably sure of avoiding a large inrush of water.

  3. 75 FR 39798 - Airworthiness Directives; Bombardier, Inc. Model DHC-8-400, -401, and -402 Airplanes

    Science.gov (United States)

    2010-07-13

    ... 8 Q400 Airplane amendment-- Flight Manual-- DHC-8-400 airplanes 13 1 July 14, 2005 PSM 1-84-1A. DHC-8-401 airplanes 13 1 July 14, 2005 PSM 1-84-1A. DHC-8-402 airplanes 13 1 July 14, 2005 PSM 1-84-1A... amendment-- Flight Manual-- DHC-8-400 airplanes 13 3 June 9, 2008 PSM 1-84-1A. DHC-8-401 airplanes 13 3...

  4. 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,...

  5. 76 FR 36980 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-06-24

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the.... BILLING CODE 4910-13-P...

  6. Ditching Investigation of a 1/10-Scale Model of the North American F-86 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; McBride, Ellis E.

    1954-01-01

    An investigation was made of a 1/10-scale dynamically similar model of the North American F-86 airplane to study its behavior when ditched. The model was landed in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and conditions of damage were simulated. The behavior of the model was determined from visual observations, acceleration records, and motion-picture records of the ditchings. Data are presented in tabular form, sequence photographs, and time-history acceleration curves. From the results of the investigation it was concluded that the airplane should be ditched at the nose-high, 14 deg attitude to avoid the violent dive which occurs at the 4 deg attitude. The flaps and leading-edge slats should be fully extended to obtain the lowest possible landing speed. The wing tanks should be jettisoned to avoid the undesirable behavior which occurs with the tanks attached. In a calm-water ditching under these conditions the airplane will run smoothly for about 600 feet. Maximum longitudinal and vertical decelerations of about 3g will be encountered.

  7. 76 FR 63822 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Limit Engine Torque Loads...

    Science.gov (United States)

    2011-10-14

    ...These special conditions are issued for the Gulfstream Aerospace LP (GALP) model G280 airplane. This airplane will have a novel or unusual design feature associated with engine torque loads imposed by sudden engine stoppage. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

  8. 78 FR 41286 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-10

    ... a non compliance to the safety objective exists when combined with a dormant single failure of the..., A319, A320, and A321 series airplanes other than the Model A319CJ (corporate jet) airplanes); or Airbus... (corporate jet) airplanes). (1) For airplanes that have embodied Airbus modification 38947 specified in...

  9. A fuel-efficient cruise performance model for general aviation piston engine airplanes. Ph.D. Thesis. Final Report

    Science.gov (United States)

    Parkinson, R. C. H.

    1983-01-01

    A fuel-efficient cruise performance model which facilitates maximizing the specific range of General Aviation airplanes powered by spark-ignition piston engines and propellers is presented. Airplanes of fixed design only are considered. The uses and limitations of typical Pilot Operating Handbook cruise performance data, for constructing cruise performance models suitable for maximizing specific range, are first examined. These data are found to be inadequate for constructing such models. A new model of General Aviation piston-prop airplane cruise performance is then developed. This model consists of two subsystem models: the airframe-propeller-atmosphere subsystem model; and the engine-atmosphere subsystem model. The new model facilitates maximizing specific range; and by virtue of its implicity and low volume data storge requirements, appears suitable for airborne microprocessor implementation.

  10. 75 FR 28463 - Airworthiness Directives; BAE SYSTEMS (Operations) Limited Model BAe 146 Airplanes and Model Avro...

    Science.gov (United States)

    2010-05-21

    ....- Action Work hours labor rate Parts airplane registered Fleet cost per hour airplanes ALS Revision... requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in... revisions to certain operator maintenance documents to include new inspections. Compliance with these...

  11. 75 FR 20787 - Airworthiness Directives; Bombardier, Inc. Model DHC-8-400, -401, and -402 Airplanes

    Science.gov (United States)

    2010-04-21

    ...-- Dated-- Q400 Airplane Flight Amendment-- Manual-- DHC-8-400 airplanes 13 1 July 14, 2005...... PSM 1-84-1A. DHC-8-401 airplanes 13 1 July 14, 2005...... PSM 1-84-1A. DHC-8-402 airplanes 13 1 July 14, 2005...... PSM 1-84-1A. Note 1: This may be done by inserting a copy of the applicable temporary amendment...

  12. Microsporum fulvum IBRL SD3: as novel isolate for chicken feathers degradation.

    Science.gov (United States)

    Darah, I; Nur-Diyana, A; Nurul-Husna, S; Jain, K; Lim, Sheh-Hong

    2013-12-01

    Keratinous wastes have increasingly become a problem and accumulate in the environment mainly in the form of feathers, generated mainly from a large number of poultry industries. As keratins are very difficult to degrade by general proteases, they pose a major environmental problem. Therefore, microorganisms which would effectively degrade keratins are needed for recycling such wastes. A geophilic dermatophyte, Microsporum fulvum IBRL SD3 which was isolated from a soil sample collected from a chicken feather dumping site using a baiting technique, was capable to produce keratinase significantly. The crude keratinase was able to degrade whole chicken feathers effectively. The end product of the degradation was protein that contained essential amino acids and may have potential application in animal feed production. Thus, M. fulvum could be a novel organism to produce keratinase for chicken feathers degradation.

  13. 75 FR 7407 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Science.gov (United States)

    2010-02-19

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... airworthiness directive (AD) for certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P airplanes. This... installed on certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P airplanes are failing. The...

  14. 76 FR 56680 - Airworthiness Directives; Airbus Model A330-200 and -300 Series Airplanes; Model A340-200 and...

    Science.gov (United States)

    2011-09-14

    ... telexes (AOT) listed in the following table. Table--All Operators Telexes Model Airbus all operators telex... airplanes only), as applicable, in accordance with the instructions of Airbus All Operators Telex (AOT)...

  15. 75 FR 904 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-01-07

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Directive (AD) 2009-21-08, which applies to PIAGGIO AERO INDUSTRIES S.p.A. (Piaggio) Model PIAGGIO P-180...: Service information title Page(s) Revision Date PIAGGIO AERO INDUSTRIES S.p.A. 1 through 9........ Rev....

  16. 75 FR 52292 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Science.gov (United States)

    2010-08-25

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Industries GmbH Models DA 40 and DA 40F Airplanes AGENCY: Federal Aviation Administration (FAA), Department... new airworthiness directive (AD) for all Diamond Aircraft Industries GmbH Models DA 40 and DA...

  17. Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1949-01-01

    An investigation of a 1/18-scale dynamically similar model of the North American B-45 airplane was made to observe the ditching behavior and determine the proper landing technique to be used in an emergency water landing. Various conditions of damage were simulated to determine the behavior which probably would occur in a full-scale ditching. The behavior of the model was determined from high-speed motion-picture records, time-history acceleration records, and visual observations. It was concluded that the airplane should be ditched at the maximum nose-high attitude with the landing flaps full down for minimum landing speed. During the ditching, the nose-wheel and bomb-bay doors probably will be torn away and the rear of the fuselage flooded. A violent dive will very likely occur. Longitudinal decelerations of approximately 5g and vertical accelerations of approximately -6g (including gravity) will be experienced near the pilots' compartment. Ditching braces installed in the bomb bay will tend to improve the behavior slightly but will be torn away along with the bomb-bay doors. A hydroflap installed ahead of the nose-wheel doors will eliminate the dive and failure of the nose-wheel doors, and substantially reduce the motions and accelerations.

  18. 78 FR 75511 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes...

    Science.gov (United States)

    2013-12-12

    ... design feature associated with control surface awareness and mode annunciation of the electronic flight... airplanes will incorporate the following novel or unusual design features: A fly-by-wire electronic flight... Inc., Models BD-500-1A10 and BD- 500-1A11 Series Airplanes; Electronic Flight Control System:...

  19. 75 FR 31282 - Airworthiness Directives; Airbus Model A319-100, A320-200, A321-100, and A321-200 Series Airplanes

    Science.gov (United States)

    2010-06-03

    ...-100, A320-200, A321- 100, and A321-200 Series Airplanes AGENCY: Federal Aviation Administration (FAA... May 12, 2006. The error resulted in an incorrect component maintenance manual number. This AD applies to certain Airbus Model A319-100, A320-200, A321-100, and A321-200 series airplanes. This AD...

  20. 76 FR 63823 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane Pilot-Compartment View...

    Science.gov (United States)

    2011-10-14

    ...These special conditions are issued for the Gulfstream Aerospace LP (GALP) Model G280 airplane. This airplane will have a novel or unusual design feature associated with the pilot-compartment view through a hydrophobic windshield coating, in lieu of windshield wipers. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

  1. Petunia Germinating Pollen S/D3 Interacts with S-RNases in Petunia hybrida Vilm.

    Institute of Scientific and Technical Information of China (English)

    Yan-Xia Guo; Yan-Sheng Zhang; Yong-Biao Xue

    2006-01-01

    Self-incompatibility (SI) is a genetic mechanism of self/non-self pollen recognition to prevent self-fertilization in many flowering plants and, in most cases, this is controlled by a multi-allelic S-locus. S-RNase and S-locus F box (SLF) proteins have been shown to be the female and male determinants of gametophytic selfincompatibility (GSI), respectively, in the Solanaceae, Scrophulariaceae and Rosaceae. Nevertheless, it is thought that additional factors are required for the SI response. Herein, we constructed a mature anther cDNA library from a self-incompatible Petunia hybrida Vilm. line of the S3S3 haplotype. Using AhS2-RNase from Antirrhinun hispanicum as a bait for yeast two-hybrid screening, we found that petunia germinating pollen (PGP) S/D3 was capable of interacting physically with the bait. However, the interaction lacked haplotype specificity. The PGPS/D3 gene is a single copy gene that is expressed in tissues such as the style, ovary,pollen, and leaf. The PGPS/D3::GFP (green fluorescence protein) construct was detected in both the membrane and cytoplasm. The implications of these findings in the operation of S-RNase-based SI are discussed.

  2. 77 FR 69571 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Limit Pilot Forces for Sidestick Control

    Science.gov (United States)

    2012-11-20

    ... fly-by-wire elevators, ailerons, and rudder, controlled by the pilot or copilot sidestick. Current regulations reference pilot effort loads for the cockpit pitch and roll controls that are based on a two-handed effort. The cockpit roll and pitch controls for the Model EMB-550 airplane are designed for one...

  3. 76 FR 38550 - Special Conditions: Boeing, Model 747-8 Series Airplanes; Door 1 Extendable Length Escape Slide

    Science.gov (United States)

    2011-07-01

    ... a derivative of the 747-400. The Model 747-8 is a four-engine jet transport airplane that will have a maximum takeoff weight of 975,000 pounds, new General Electric GEnx -2B67 engines, and the... extension packed at the toe end of the escape slide. During normal operation, the extension portion...

  4. 78 FR 11562 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: High Speed...

    Science.gov (United States)

    2013-02-19

    ... Embraer S.A. Model EMB-550 airplanes was published in the Federal Register on November 20, 2012 (77 FR...; Flight Envelope Protection: High Speed Limiting AGENCY: Federal Aviation Administration (FAA), DOT... inadvertently or intentionally exceeding a speed approximately equivalent to V FC or attaining V DF ....

  5. 76 FR 13078 - Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes Equipped With a Pratt and...

    Science.gov (United States)

    2011-03-10

    ...-005-AD; Amendment 39-16631; AD 2011-06-06] RIN 2120-AA64 Airworthiness Directives; Eclipse Aerospace..., we issued AD 2008-24-07, amendment 39-15747 (73 FR 70866, November 24, 2008), for certain Eclipse Aviation Corporation (Eclipse) Model EA500 airplanes equipped with a Pratt and Whitney Canada, Corp....

  6. 75 FR 22512 - Airworthiness Directives; Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-04-29

    ... Industries S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of....regulations.gov ; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2010-09-09 Piaggio Aero Industries...

  7. 75 FR 43095 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-07-23

    ... INDUSTRIES S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... failure of engine oil dipsticks, installed on Pratt & Whitney Canada (P&WC) PT6A66 and PT6A66B engines, were detected on P.180 aeroplanes; such failures, due to moisture penetration into the dipstick...

  8. 75 FR 7409 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-02-19

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of..., Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday... 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD,...

  9. 76 FR 4056 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-01-24

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... 5 p.m., Monday through Friday, except Federal holidays. Examining the AD Docket You may examine the... Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket...

  10. 76 FR 10224 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-02-24

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... this AD, contact Piaggio Aero Industries S.p.A., Via Cibrario, 4-16154 Genoa, Italy; phone: +39 010... that the towing bar P/N 01-1227-0000 or similar ferromagnetic masses are prohibited to be carried...

  11. 75 FR 43101 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-07-23

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except....regulations.gov ; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday...

  12. 75 FR 63058 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-10-14

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of....regulations.gov ; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2010-21-14 PIAGGIO AERO INDUSTRIES...

  13. 75 FR 63062 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-10-14

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Assembly (P/N 80-337284- 001), which allows better clearances and removes the problem of potential interference. PAI issued SB 80-0175 Revision 1, limiting the applicability to aeroplanes with the old...

  14. 75 FR 68172 - Airworthiness Directives; Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-11-05

    ... Industries S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... identified in this AD, contact Piaggio Aero Industries S.p.a., Via Cibrario, 4-16154 Genoa, Italy; phone: +39... between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the...

  15. 75 FR 47734 - Airworthiness Directives; Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-08-09

    ... Industries S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through... http://www.regulations.gov ; or in person at the Docket Management Facility between 9 a.m. and 5...

  16. 76 FR 54403 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-09-01

    ... INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... sleeves (part number (P/N) 114146681), which were installed in some Main Landing Gear (MLG) actuators, had... Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday,...

  17. 77 FR 67308 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Hydrophobic Coatings in Lieu of...

    Science.gov (United States)

    2012-11-09

    ...., Model EMB-550 Airplane; Hydrophobic Coatings in Lieu of Windshield Wipers AGENCY: Federal Aviation... feature(s) associated with hydrophobic coatings. The applicable airworthiness regulations do not contain... hydrophobic coating on the windshield in lieu of windshield wipers. The existing regulation, Title 14, Code...

  18. 76 FR 40286 - Airworthiness Directives; Empresa Brasileira de Aeronáutica S.A. (EMBRAER) Model EMB-505 Airplanes

    Science.gov (United States)

    2011-07-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Empresa Brasileira...), 40113, 44701. Sec. 39.13 2. The FAA amends Sec. 39.13 by adding the following new AD: Empresa Brasileira...) This AD applies to Empresa Brasileira de Aeron utica S.A. (EMBRAER) Model EMB-505 airplanes, all...

  19. 76 FR 57627 - Special Conditions: Cessna Aircraft Company Model M680 Airplane; Rechargeable Lithium-Ion Battery...

    Science.gov (United States)

    2011-09-16

    ... Airplane; Rechargeable Lithium-Ion Battery Installations AGENCY: Federal Aviation Administration (FAA), DOT... lithium-ion batteries. The applicable airworthiness regulations do not contain adequate or appropriate... lithium-ion batteries in the Model 680. Type Certification Basis Under the provisions of Title 14, Code of...

  20. 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; Rechargeable Lithium Ion Batteries and Battery Systems AGENCY: Federal Aviation... lithium ion batteries and battery system that will be used on an International Communications Group (ICG... uses rechargeable lithium ion batteries and battery systems in the Boeing Model 777-200, -300,...

  1. 75 FR 75868 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Science.gov (United States)

    2010-12-07

    ... Register on August 25, 2010 (75 FR 52292). That NPRM proposed to require a retrofit of the rear passenger... 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034... Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes AGENCY: Federal Aviation Administration,...

  2. 76 FR 18964 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-04-06

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

  3. Dynamics Modeling and Simulation of Large Transport Airplanes in Upset Conditions

    Science.gov (United States)

    Foster, John V.; Cunningham, Kevin; Fremaux, Charles M.; Shah, Gautam H.; Stewart, Eric C.; Rivers, Robert A.; Wilborn, James E.; Gato, William

    2005-01-01

    As part of NASA's Aviation Safety and Security Program, research has been in progress to develop aerodynamic modeling methods for simulations that accurately predict the flight dynamics characteristics of large transport airplanes in upset conditions. The motivation for this research stems from the recognition that simulation is a vital tool for addressing loss-of-control accidents, including applications to pilot training, accident reconstruction, and advanced control system analysis. The ultimate goal of this effort is to contribute to the reduction of the fatal accident rate due to loss-of-control. Research activities have involved accident analyses, wind tunnel testing, and piloted simulation. Results have shown that significant improvements in simulation fidelity for upset conditions, compared to current training simulations, can be achieved using state-of-the-art wind tunnel testing and aerodynamic modeling methods. This paper provides a summary of research completed to date and includes discussion on key technical results, lessons learned, and future research needs.

  4. ANALYSIS FOR AERODYNAMICS OF THE SIMPLIFIED MODEL OF A COMMERCIAL AIRPLANE CRUISING AT TRANSONIC SPEED

    Directory of Open Access Journals (Sweden)

    KIM YANGKYUN

    2010-12-01

    Full Text Available This paper describes the computational analysis and visualization of flow around the model of a commercial airplane, Boeing 747-400. The geometry was realized through reverse engineering technique based on the photo scanning measurement. The steady three-dimensional viscous compressible governing equations were solved in the unstructured grid system. The basic conditions for computation were chosen as the same to those of Boeing 747-400’s cruising state. The high Reynolds turbulence models are tried. The angle of attack is varied to investigate the effect of the flight conditions to the aerodynamic performance. And flow and aerodynamic characteristics due to the existence of winglet were compared.

  5. Tank Investigation of the EDO Model 142 Hydro-Ski Research Airplane

    Science.gov (United States)

    Ramsen, John A.; Wadlin, Kenneth L.; Gray, George R.

    1951-01-01

    A tank investigation has been conducted of a 1/10-size powered-dynamic model of the Edo model 142 hydra-ski research airplane. The results of tests of two configurations are presented: One included a large ski and a ski well; the other, a small ski without a well. Water take-offs would be possible with the available thrust for either configuration: however, the configuration with the large ski emerged sooner and had less resistance from ski emergence until take-off. Longitudinal stability and landing behavior in smooth water were satisfactory for both configurations. Some alteration to the design of the tail would be desirable in order to reduce the spray loads.

  6. 76 FR 30043 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-05-24

    ... approach, just before landing. One event resulted in a nose gear collapse after a hard landing and another... oscillations are characterized by large ] wheel inputs at high rates that are out of phase with the airplane... per 4,701 7,676 15,352 (2 airplanes). hour = $2,975. Torque Bracket Assembly and Bond 12 work-hours...

  7. 77 FR 2439 - Airworthiness Directives; Hawker Beechcraft Corporation Models 1900, 1900C, and 1900D Airplanes

    Science.gov (United States)

    2012-01-18

    ... nose up. The airplane pitch was controlled with the elevator trim and the airplane returned to base... elevator bob-weight and attaching linkage for correct installation and for damage or deformation to the... elevator bob-weight (stabilizer weight) traveling past its stop bolt, which allowed the attaching linkage...

  8. 76 FR 8278 - Special Conditions: Gulfstream Model GVI Airplane; Enhanced Flight Vision System

    Science.gov (United States)

    2011-02-14

    ... Flight Vision System AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions..., Airplane and Flight Crew Interface Branch, ANM-111, Transport Standards Staff, Transport Airplane... Design Features The enhanced flight vision system (EFVS) is a novel or unusual design feature because...

  9. 75 FR 7557 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2010-02-22

    ..., which could be an ignition source in a hidden area of the airplane. DATES: We must receive comments on... deployment, and burned wires, which could be an ignition source in a hidden area of the airplane. Relevant... work-hour. Required parts would cost about $770 per product. Based on these figures, we estimate...

  10. 75 FR 38950 - Airworthiness Directives; The Boeing Company Model 727 Airplanes

    Science.gov (United States)

    2010-07-07

    ... Aircraft Certification Office (ACO), 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425... wing-to-body fairings. The airplane has never had any decals installed in inspection areas since delivery. The existing repairs on the airplane span at least 3 rows above/forward and 3 rows below/aft...

  11. 76 FR 25229 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane, Dynamic Test Requirements...

    Science.gov (United States)

    2011-05-04

    ..., and a range of approximately 3,400 nautical miles. Airplane dimensions are 61.69-foot wing span, 66.6..., Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue, SW., Renton, Washington... of the design approval and thus delivery of the affected aircraft. In addition, the substance...

  12. 76 FR 35736 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane Automatic Power Reserve...

    Science.gov (United States)

    2011-06-20

    ... approximately 3,400 nautical miles. Airplane dimensions are 61.69-foot wing span, 66.6-foot overall length, and... INFORMATION CONTACT: Joe Jacobsen, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind... takeoff and go- around (TOGA). The aircraft performance data is based on the availability of the...

  13. 78 FR 60667 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    .../A319/A320/A321 Airplane Flight Manual. (ii) Reserved. (5) For service information identified in this AD.... SUMMARY: We are superseding airworthiness directive (AD) 2012-26-51 for all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2012- 26-51 required revising the airplane flight manual (AFM) to...

  14. Airplane Ear

    Science.gov (United States)

    ... severe hearing loss Ringing in your ear (tinnitus) Spinning sensation (vertigo) Vomiting resulting from vertigo Bleeding from ... the back of the nasal cavity and the top of the throat meet (nasopharynx). When an airplane ...

  15. 76 FR 17582 - Special Conditions: Bombardier Model BD-700-1A10 and BD-700-1A11 Airplanes, Head-Up Display (HUD...

    Science.gov (United States)

    2011-03-30

    ...-1A11 Airplanes, Head-Up Display (HUD) With Video Synthetic Vision System (SVS) AGENCY: Federal Aviation... Certificate Data Sheet (TCDS) T00003NY, those aircraft models are known under the marketing designation of...

  16. 76 FR 17062 - Special Conditions: Bombardier Model BD-700-1A10 and BD-700-1A11 Airplanes, Head-Up Display (HUD...

    Science.gov (United States)

    2011-03-28

    ...-1A11 Airplanes, Head-Up Display (HUD) With Video Synthetic Vision System (SVS) AGENCY: Federal Aviation... Certificate Data Sheet (TCDS) T00003NY, those aircraft models are known under the marketing designation of...

  17. 76 FR 31223 - Special Conditions: Bombardier Model BD-700-1A10 and BD-700-1A11 Airplanes, Head-up Display (HUD...

    Science.gov (United States)

    2011-05-31

    ...-1A11 Airplanes, Head-up Display (HUD) With Video Synthetic Vision System (SVS) AGENCY: Federal Aviation.... Per Type Certificate Data Sheet (TCDS) T00003NY, those aircraft models are known under the marketing...

  18. 76 FR 66660 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Operation Without Normal...

    Science.gov (United States)

    2011-10-27

    ... G280 Airplane, Operation Without Normal Electrical Power AGENCY: Federal Aviation Administration (FAA... design feature associated with operation without normal electrical power. The applicable airworthiness... have a novel or unusual design feature associated with operation without normal electrical power....

  19. 76 FR 15818 - Airworthiness Directives; Reims Aviation S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-03-22

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

  20. 76 FR 35344 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-06-17

    ...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City... 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  1. 76 FR 65991 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-10-25

    ... horizontal stabilizer ballscrew assembly; repetitive lubrication of the horizontal stabilizer trim control..., damage, cracking, corrosion, or wear); repetitive lubrication of the horizontal stabilizer trim control...-time'' replacement program. The proposed AD includes credit for airplanes on which any HSTA...

  2. 77 FR 36123 - Special Conditions: Gulfstream Aerospace LP (GALP), Model Gulfstream G280 Airplane; Aircraft...

    Science.gov (United States)

    2012-06-18

    ... systems (aircraft control functions); 2. Airline business and administrative support (airline information services); 3. Passenger information and entertainment systems (passenger entertainment services); and, 4... Gulfstream G280 Airplane; Aircraft Electronic System Security Protection From Unauthorized External Access...

  3. 78 FR 65155 - Special Conditions: Learjet Model 45 Series Airplanes; Isolation or Security Protection of the...

    Science.gov (United States)

    2013-10-31

    ... information domain); and 3. Passenger information and entertainment systems (passenger entertainment domain... interconnected networks and systems, such as passenger entertainment and information services than previous... associated with connectivity of the passenger service computer systems to the airplane critical systems and...

  4. 75 FR 63060 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-10-14

    ... INDUSTRIES S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of..., installed on Pratt & Whitney Canada (P&WC) PT6A66 and PT6A66B engines, were detected on P.180 aeroplanes... & Whitney Canada (P&WC) PT6A66 and PT6A66B engines, were detected on P.180 aeroplanes; such failures, due...

  5. Ditching Tests of a 1/10-Scale Model of the North American XFJ-1 Airplane Ted No. NACA 314

    Science.gov (United States)

    Fisher, Lloyd J.; McBride, Ellis E.

    1948-01-01

    Tests were made of a 1/10-scale dynamically similar model of the North American XFJ-1 airplane to study its behavior when ditched. The model was landed in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and conditions of damage were simulated. The behavior of the model was determined from visual observations, by recording the accelerations, and by taking motion pictures of the ditchings. Data are presented in tabular form, sequence photographs, and time-history acceleration curves. From the results of the tests it was concluded that the airplane should be ditched at the near-stall, tail-down landing attitude of 12 deg. The flaps should be fully extended to obtain the lowest possible landing speed. The wing-tip tanks should be jettisoned if any appreciable load of fuel remains; if empty, they should be retained for additional buoyancy. In a calm-water ditching the airplane will probably run about 600 feet Maximum longitudinal decelerations of about 2.5g and maximum vertical acceleration of about 2g will be encountered. The nose-intake duct will be clear of the water until practically all forward motion has stopped.

  6. Unmanned Airplane Autopilot Tuning

    OpenAIRE

    Petar Getsov; Dimitar Yordanov

    2014-01-01

    This article considers different approaches for autopilot controller gain values adjustment. The correct autopilot performance is tested using modeling methods. A variant of land-based autopilot is considered. Examined are scenarios of UAV airplanes in level flight. The latter are applicable to tasks such as remote sensing, controlled area surveillance, etc.

  7. Unmanned Airplane Autopilot Tuning

    Directory of Open Access Journals (Sweden)

    Petar Getsov

    2014-07-01

    Full Text Available This article considers different approaches for autopilot controller gain values adjustment. The correct autopilot performance is tested using modeling methods. A variant of land-based autopilot is considered. Examined are scenarios of UAV airplanes in level flight. The latter are applicable to tasks such as remote sensing, controlled area surveillance, etc.

  8. Modelling and Simulation of Fuel Cell Dynamics for Electrical Energy Usage of Hercules Airplanes

    Directory of Open Access Journals (Sweden)

    Hamid Radmanesh

    2014-01-01

    Full Text Available Dynamics of proton exchange membrane fuel cells (PEMFC with hydrogen storage system for generating part of Hercules airplanes electrical energy is presented. Feasibility of using fuel cell (FC for this airplane is evaluated by means of simulations. Temperature change and dual layer capacity effect are considered in all simulations. Using a three-level 3-phase inverter, FC’s output voltage is connected to the essential bus of the airplane. Moreover, it is possible to connect FC’s output voltage to airplane DC bus alternatively. PID controller is presented to control flow of hydrogen and oxygen to FC and improve transient and steady state responses of the output voltage to load disturbances. FC’s output voltage is regulated via an ultracapacitor. Simulations are carried out via MATLAB/SIMULINK and results show that the load tracking and output voltage regulation are acceptable. The proposed system utilizes an electrolyser to generate hydrogen and a tank for storage. Therefore, there is no need for batteries. Moreover, the generated oxygen could be used in other applications in airplane.

  9. Modelling and simulation of fuel cell dynamics for electrical energy usage of Hercules airplanes.

    Science.gov (United States)

    Radmanesh, Hamid; Heidari Yazdi, Seyed Saeid; Gharehpetian, G B; Fathi, S H

    2014-01-01

    Dynamics of proton exchange membrane fuel cells (PEMFC) with hydrogen storage system for generating part of Hercules airplanes electrical energy is presented. Feasibility of using fuel cell (FC) for this airplane is evaluated by means of simulations. Temperature change and dual layer capacity effect are considered in all simulations. Using a three-level 3-phase inverter, FC's output voltage is connected to the essential bus of the airplane. Moreover, it is possible to connect FC's output voltage to airplane DC bus alternatively. PID controller is presented to control flow of hydrogen and oxygen to FC and improve transient and steady state responses of the output voltage to load disturbances. FC's output voltage is regulated via an ultracapacitor. Simulations are carried out via MATLAB/SIMULINK and results show that the load tracking and output voltage regulation are acceptable. The proposed system utilizes an electrolyser to generate hydrogen and a tank for storage. Therefore, there is no need for batteries. Moreover, the generated oxygen could be used in other applications in airplane.

  10. 77 FR 65642 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-30

    ... (FMEA) be done for the fuel system on Model 757 airplanes. AAL stated that the fuel system, while... and FMEA; specifically, all the wing fuel pump relays of the Model 757 airplane are powered by one...

  11. Correlation Tests of the Ditching Behavior of an Army B-24D Airplane and a 1/16-size Model

    Science.gov (United States)

    Jarvis, George A.; Fisher, Lloyd J.

    1946-01-01

    Behaviors of both model and full-scale airplanes were ascertained by making visual observations, by recording time histories of decelerations, and by taking motion picture records of ditchings. Results are presented in form of sequence photographs and time-history curves for attitudes, vertical and horizontal displacements, and longitudinal decelerations. Time-history curves for attitudes and horizontal and vertical displacements for model and full-scale tests were in agreement; maximum longitudinal decelerations for both ditchings did not occur at same part of run; full-scale maximum deceleration was 50 percent greater.

  12. Ditching Tests of a 1/9-Size Model of the Army P-38 Airplane in Langley Tank No. 2 and at the Outdoor Catapult

    Science.gov (United States)

    Jarvis, George A.; Cederborg, Gibson A.

    1946-01-01

    A dynamically similar model of the Army P-38 airplane was tested to determine the best way to land this airplane on the water and to determine its probable ditching performance. The tests consisted of ditching the model at various landing attitudes, flap settings, speeds, weights, and conditions of simulated damage. The model was ditched in calm water from the tank towing carriage and a few ditching were made in both calm and rough water at the outdoor catapult. The performance of the model was determined by making visual observations, by recording lengths of run and time histories of decelerations, and by taking motion pictures of the ditchings.

  13. 76 FR 48045 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-08-08

    ... material at the FAA, call (816) 329-4148; e-mail: albert.mercado@faa.gov . Examining the AD Docket You may... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  14. 75 FR 66700 - Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 402C Airplanes Modified by...

    Science.gov (United States)

    2010-10-29

    ... CONTACT: Werner Koch, Aerospace Engineer, Fort Worth Airplane Certification Office, FAA, 2601 Meacham Blvd... switches are located on the arm assembly and provide the electrical signal for the arm position. STC... switches stops and the switch to stop the drive motor is not activated. Because the switch is not...

  15. 76 FR 17022 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection

    Science.gov (United States)

    2011-03-28

    ... required performance standard. (4) The center of gravity position that results in the highest value of... attack that can be attained to a value below that at which an aerodynamic stall would occur. (c) Alpha... flight speed in calibrated airspeed obtained when the airplane is decelerated at an entry rate not...

  16. 76 FR 35324 - Special Conditions: Boeing Model 787 Series Airplanes; Seats With Inflatable Lapbelts

    Science.gov (United States)

    2011-06-17

    ... application date to October 1, 2006. The 787 will be an all-new, twin- engine jet transport airplane with a... accident. The inflatable lapbelt works similar to an automotive airbag, except that the airbag is... automobile installations, the airbag is a supplemental system and works in conjunction with an upper...

  17. 75 FR 81417 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-12-28

    ...-057-AD; Amendment 39-16543; AD 2010-26-04] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc...): 2010-26-04 Piper Aircraft, Inc: Amendment 39-16543; Docket No. FAA- 2010-1006; Directorate Identifier... alternative GmbH Supplement replacement times may be Airplane approved for this part. Maintenance Manual...

  18. 76 FR 67633 - Airworthiness Directives; Dassault Aviation Model Mystere-Falcon 50 Airplanes

    Science.gov (United States)

    2011-11-02

    ... products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI... the flap tracks could lead to flap asymmetry and loss of control of the airplane. The proposed AD... Friday, except Federal holidays. For service information identified in this proposed AD, contact...

  19. 77 FR 18099 - Special Conditions: Dassault Aviation, Model Falcon 7X Airplanes; Seats With Inflatable Shoulder...

    Science.gov (United States)

    2012-03-27

    ... abuse conditions (due to galley loading, passenger baggage, etc.). Airplanes also operate where exposure to high intensity electromagnetic fields could affect the activation system. The inflatable shoulder... Intensity Radiated Fields (HIRF) Protection. The U.S. type certification basis for the Falcon 7X...

  20. 76 FR 36864 - Special Conditions: Gulfstream Model GVI Airplane; Operation Without Normal Electric Power

    Science.gov (United States)

    2011-06-23

    ... published in the Federal Register on February 14, 2011 (76 FR 8314). Only one comment was received, which... normal sources of engine and auxiliary power unit (APU) generated electrical power inoperative. Service experience has shown that loss of all electrical power from the airplane's engine and APU driven...

  1. 76 FR 12845 - Airworthiness Directives; APEX Aircraft Model CAP 10 B Airplanes

    Science.gov (United States)

    2011-03-09

    ... CAP 10 B Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... describes the unsafe condition as: A fatal accident occurred to a CAP 10C, in which the pilot lost control... specified products. The MCAI states: ] A fatal accident occurred to a CAP 10C, in which the pilot lost...

  2. 75 FR 82335 - Airworthiness Directives; APEX Aircraft Model CAP 10 Airplanes

    Science.gov (United States)

    2010-12-30

    ... CAP 10 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... CAP 10C, in which the pilot lost control of the aeroplane. The following investigation has revealed... condition for the specified products. The MCAI states: A fatal accident occurred to a CAP 10C, in which the...

  3. 76 FR 31454 - Special Conditions: Gulfstream Model GVI Airplane; Automatic Speed Protection for Design Dive Speed

    Science.gov (United States)

    2011-06-01

    ... for Gulfstream GVI airplanes was published in the Federal Register on February 16, 2011 (76 FR 8917...; Automatic Speed Protection for Design Dive Speed AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... high speed protection system. These special conditions contain the additional safety standards that...

  4. 75 FR 19207 - Airworthiness Directives; Airbus Model 340-500 and -600 Series Airplanes

    Science.gov (United States)

    2010-04-14

    ... Information Airbus has issued All Operators Telex A340-29A5014, dated October 14, 2008. The actions described... Telex A340-29A5014, dated October 14, 2008. (i) If the airplane has accumulated 1,000 total flight... (including bulging and chafing) in accordance with the instructions of Airbus All Operators Telex...

  5. 75 FR 50853 - Special Conditions: Cirrus Design Corporation Model SF50 Airplane; Function and Reliability Testing

    Science.gov (United States)

    2010-08-18

    ..., Section 3.19 of Civil Air Regulation (CAR) part 3 required service testing of all airplanes type....'' Amendment 3-4 to CAR part 3 became effective January 15, 1951, and deleted the service test requirements in... include-- (1) For aircraft incorporating turbine engines of a type not previously used in a type...

  6. 76 FR 67625 - Airworthiness Directives; Airbus Model A319 and A320 Series Airplanes

    Science.gov (United States)

    2011-11-02

    ...; certificated in any category; all manufacturer serial numbers; except for airplanes delivered with Airbus...-112 are installed. Subject (d) Air Transport Association (ATA) of America Code 25: Equipment... limited to manufacturer serial numbers (MSN) equipped with Air Cruisers/Aerazur P/N D31865- 109; P/N...

  7. 75 FR 16696 - Airworthiness Directives; Airbus Model A330-223, -321, -322, and -323 Airplanes

    Science.gov (United States)

    2010-04-02

    ..., -321, -322, and - 323 airplanes; certificated in any category; all manufacturer serial numbers. Subject (d) Air Transport Association (ATA) of America Code 71: Powerplant. Reason (e) The mandatory... done. Actions (g) Do a detailed inspection to determine the part number, serial number, and lot number...

  8. 75 FR 48623 - Airworthiness Directives; The Boeing Company Model 767-300 Series Airplanes

    Science.gov (United States)

    2010-08-11

    ... fuselage skin and backup structure at the lower very high frequency (VHF) antenna cutout at station 1197... structure, which could result in rapid decompression of the airplane. DATES: We must receive comments on... substantive verbal contact we receive about this proposed AD. Discussion We have been advised that...

  9. 76 FR 8615 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2011-02-15

    ... leak and an increased risk of fire. DATES: This AD is effective March 22, 2011. The Director of the... parts. You must install all parts removed for access before the airplane is put back in service.'' As a... a fuel leak and an increased risk of fire. Compliance (f) You are responsible for having the...

  10. 76 FR 20501 - Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 050 Airplanes

    Science.gov (United States)

    2011-04-13

    ..., including the adequacy of existing regulations, the service history of airplanes subject to those... years after the effective date of this AD, do a general visual inspection for the presence of the rubber... by reference at the National Archives and Records Administration (NARA). For information on the...

  11. 75 FR 8279 - Airworthiness Directives; The Boeing Company Model 747 Airplanes

    Science.gov (United States)

    2010-02-24

    .... For airplanes with previously installed repairs, before further flight, do rework (i.e., replace any... contact Boeing for repair or rework data, the data must be approved in accordance with the procedures specified in paragraph (x) of this AD and the repair or rework must be done before further flight. (i)...

  12. 76 FR 37258 - Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes

    Science.gov (United States)

    2011-06-27

    ..., 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, at the applicable times... Requirements Manual, PSM 1-84-7, within 6,000 flight hours after the effective date of this AD. (i) Airplanes... Requirements Manual, PSM 1-84-7, was successfully completed after incorporation of Bombardier Modsum...

  13. 78 FR 76248 - Special Conditions: Airbus, Model A350-900 Series Airplane; Side Stick Controller

    Science.gov (United States)

    2013-12-17

    ..., 2000 (65 FR 19477-19478), as well as at http:// DocketsInfo.dot.gov/ . Docket: Background documents or... Branch, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW... by wrist and not by arms. Discussion Special conditions for Airbus side stick controllers have...

  14. 76 FR 1979 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-01-12

    ... -300 series airplanes. This AD requires an inspection of the two spring arms in the spin brake assemblies in the nose wheel well to determine if the spring arms are made of aluminum or composite material... assemblies in the nose wheel well to determine if the spring arms are made of aluminum or composite...

  15. 76 FR 54141 - Airworthiness Directives; Cessna Aircraft Company Model 680 Airplanes

    Science.gov (United States)

    2011-08-31

    ... the left main electrical bus and selected the left generator to OFF. The co-pilot (flying the airplane... pounds. Loss of power on the left main electrical bus results in a false cross-feed command to the right... after receipt. FOR FURTHER INFORMATION CONTACT: Nhien Hoang, Aerospace Engineer, Electrical Systems...

  16. 76 FR 68668 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0100 Airplanes

    Science.gov (United States)

    2011-11-07

    ... be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Tom Rodriguez... (BLA) 2002-115/2 dated October 8, 2004 [which partially corresponds to FAA AD 2008-20-03, Amendment 39... and Airplane Flight Manual Amendment (j) Before further flight after accomplishing the...

  17. The NPOESS Preparatory Project Science Data Segment (SDS) Data Depository and Distribution Element (SD3E) System Architecture

    Science.gov (United States)

    Ho, Evelyn L.; Schweiss, Robert J.

    2008-01-01

    The National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) Science Data Segment (SDS) will make daily data requests for approximately six terabytes of NPP science products for each of its six environmental assessment elements from the operational data providers. As a result, issues associated with duplicate data requests, data transfers of large volumes of diverse products, and data transfer failures raised concerns with respect to the network traffic and bandwidth consumption. The NPP SDS Data Depository and Distribution Element (SD3E) was developed to provide a mechanism for efficient data exchange, alleviate duplicate network traffic, and reduce operational costs.

  18. 77 FR 65501 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-29

    ... certain The Boeing Company Model 707 airplanes, and Model 720 and 720B series airplanes. The existing AD... Boeing Company Model 707-100 long body, - 200, -100B long body, and -100B short body series airplanes... TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The...

  19. Reduction of vertical-gust induced loads on elastic airplane model with slotted-interceptor-type surfaces

    Science.gov (United States)

    Mazutsky, A. Yu.

    2007-06-01

    Results of T-203 wind-tunnel tests of an elastic airplane model dynamically similar to Tu-204 aircraft equipped with a passive wing load reduction system are reported. The wing load reduction system comprised two auxiliary aerodynamic surfaces of the slotted-interceptor type installed symmetrically on the upper surface of the lifting wing at the boundary-layer height. It was found that, with the operating system, the additional bending moments induced by symmetric vertical discrete gusts in the wing root and at the fuselage mid-body decreased by 20%, with simultaneous increase observed in the flexure-pylon flutter speed.

  20. Ditching Investigation of a 1/12-Scale Model of the Douglas F3D-2 Airplane, TED No. NACA DE 381

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1955-01-01

    An investigation of a 1/12- scale dynamically similar model of the Douglas F3D-2 airplane was made in calm water to observe the ditching behavior and to determine the safest procedure for making an emergency water landing. Various conditions of damage were simulated to determine the behavior which probably would occur in a full-scale ditching. The behavior of the model was determined from motion-picture records, time- history acceleration records, and visual observations. It was concluded that the airplane should be ditched at a medium high attitude of about 8 degrees with the landing flaps down 40 degrees. In calm water the airplane will probably make a smooth run of about 550 feet and will have a maximum longitudinal deceleration of about 3g. The fuselage bottom will probably be damaged enough to allow the fuselage to fill with water very rapidly.

  1. Aerodynamic Modeling and Parameter Estimation from QAR Data of an Airplane Approaching a High-altitude Airport

    Institute of Scientific and Technical Information of China (English)

    WANG Qing; WU Kaiyuan; ZHANG Tianjiao; KONG Yi'nan; QIAN Weiqi

    2012-01-01

    Aerodynamic modeling and parameter estimation from quick accesses recorder (QAR) data is an important technical way to analyze the effects of highland weather conditions upon aerodynamic characteristics of airplane.It is also an essential content of flight accident analysis.The related techniques are developed in the present paper,including the geometric method for angle of attack and sideslip angle estimation,the extended Kalman filter associated with modified Bryson-Frazier smoother (EKF-MBF) method for aerodynamic coefficient identification,the radial basis function (RBF) neural network method for aerodynamic modeling,and the Delta method for stability/control derivative estimation.As an application example,the QAR data of a civil airplane approaching a high-altitude airport are processed and the aerodynamic coefficient and derivative estimates are obtained.The estimation results are reasonable,which shows that the developed techniques are feasible.The causes for the distribution of aerodynamic derivative estimates are analyzed.Accordingly,several measures to improve estimation accuracy are put forward.

  2. Supplementary Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

    Science.gov (United States)

    Fisher, Lloyd J.; Thompson, William C.

    1949-01-01

    A supplementary investigation of a 1/18-scale dynamically similar model of the North American B-45 airplane was made in calm water to observe the ditching behavior and to determine the effect of further conditions of simulated damage. The behavior of the model was determined from motion-picture records, time-history deceleration records, and visual observations. It was concluded that, during a ditching, the nose-wheel doors, bomb-bay doors, under surface of the aft fuselage and lower part of the bomb-bay aft bulkhead will be torn away. When such damage occurs, the diving found in the previous tests will not occur and the airplane will porpoise during the first third of the landing run and then run smoothly. Because of the extensive damage which occurs, the fuselage aft of the pilots' compartment will fill with water very rapidly and is, therefore, an undesirable ditching station. No change in the previously recommended ditching attitude and flap setting (6 deg attitude, flaps down) is indicated by these supplementary tests.

  3. 77 FR 28238 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-14

    ... -132 airplanes; Model A320-111, -211, -212, -214 and -232 airplanes; and Model A321-111, -211, -212.... ] Request That the FAA Accept Published Service Repair Manual (SRM) Repairs as an FAA-Approved Corrective... specified to comply with the NPRM. United Airlines stated that Airbus Service Bulletin A320-57-1152,...

  4. 78 FR 60798 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    ... directive (AD) for all Airbus Model A330-200, -300 and -200 Freighter series airplanes, and Model A340-200... prompted by a report that an airplane equipped with AOA sensors installed with conic plates recently... information on the availability of this material at the FAA, call 425-227-1221. Examining the AD Docket...

  5. Wind-tunnel free-flight investigation of a 0.15-scale model of the F-106B airplane with vortex flaps

    Science.gov (United States)

    Yip, Long P.

    1987-01-01

    An investigation to determine the effects of vortex flaps on the flight dynamic characteristics of the F-106B in the area of low-speed, high-angle-of-attack flight was undertaken on a 0.15-scale model of the airplane in the Langley 30- by 60-Foot Tunnel. Static force tests, dynamic forced-oscillation tests, as well as free-flight tests were conducted to obtain a data base on the flight characteristics of the F-106B airplane with vortex flaps. Vortex flap configurations tested included a full-span gothic flap, a full-span constant-chord flap, and a part-span gothic flap.

  6. 77 FR 50054 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2012-08-20

    ... Directives; Cessna Aircraft Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... certain Cessna Aircraft Company Models 172R and 172S airplanes. This proposed AD was prompted by reports... tube assembly and the airplane structure; and adjustment as necessary. We are proposing this AD...

  7. 75 FR 43397 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Science.gov (United States)

    2010-07-26

    ...-067-AD; Amendment 39-16338; AD 2010-13-07] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... in the Federal Register on June 23, 2010 (75 FR 35619), and applies to certain Piper Aircraft, Inc... certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P airplanes. AD 2010-13-07 requires you...

  8. 76 FR 62656 - Airworthiness Directives; Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B Airplanes

    Science.gov (United States)

    2011-10-11

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B Airplanes AGENCY: Federal Aviation Administration (FAA... connectors in the SAAB 340 main landing gear (MLG) emergency release system. The investigation results showed...

  9. 77 FR 49386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-16

    ...-111 and -112 airplanes, and Model A319, A320, and A321 series airplanes. This proposed AD was prompted... of the manual mask release and corrective actions if necessary. We are proposing this AD to detect... operational check of the manual mask release and corrective actions if necessary. You may obtain...

  10. 77 FR 60653 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-04

    ... A319, A320, and A321 airplanes. The existing AD currently requires installing spacer assemblies at the... conversion manual. This proposed AD would require modifying the attachment points of fixed YZ-latches of the... address an unsafe condition on certain Airbus Model A319, A320, and A321 series airplanes. Since we...

  11. Ditching Investigation of a 1/12-Scale Model of the Douglas F4D-1 Airplane, TED No. NACA DE 384

    Science.gov (United States)

    Windham, John O.

    1956-01-01

    A ditching investigation was made of a l/l2-scale dynamically similar model of the Douglas F4D-1 airplane to study its behavior when ditched. The model was landed in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and configurations were investigated. The behavior of the model was determined from visual observations, acceleration records, and motion-picture records of the ditchings. Data are presented in tables, sequence photographs, time-history acceleration curves, and attitude curves. From the results of the investigation, it was concluded that the airplane should be ditched at the lowest speed and highest attitude consistent with adequate control (near 22 deg) with landing gear retracted. In a calm-water ditching under these conditions the airplane will probably nose in slightly, then make a fairly smooth run. The fuselage bottom will sustain appreciable damage so that rapid flooding and short flotation time are likely. Maximum longitudinal deceleration will be about 4g and maximum normal acceleration will be about 6g in a landing run of about 420 feet, In a calm-water ditching under similar conditions with the landing gear extended, the airplane will probably dive. Maximum longitudinal decelerations will be about 5-1/2g and maximum normal accelerations will be about 3-1/2g in a landing run of about 170 feet.

  12. 78 FR 6198 - Special Conditions: Airbus, Model A318-112 Airplane (S/N 3238); Certification of Cooktops

    Science.gov (United States)

    2013-01-30

    ...-112 airplane is a large, transport-category airplane powered by two CFM56-5B9/P engines, with a basic...) to a corporate jet, operating for both common carriage and private use. As of this publication... temperature set on ``high,'' and the timer at maximum, the cooktop will maintain safe operation and will...

  13. 76 FR 64854 - Airworthiness Directives; Airbus Model A318, A319, A320, and A321 Series Airplanes

    Science.gov (United States)

    2011-10-19

    ..., A319, A320, and A321 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... section revision to the airplane flight manual and the installation of a new flight warning computer (FWC... thrust lever configuration and to correct this. For the A320 family of aeroplanes this being IDLE...

  14. 75 FR 2433 - Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security...

    Science.gov (United States)

    2010-01-15

    ... Security--Protection of Airplane Systems and Data Networks From Unauthorized External Access AGENCY... external systems and networks may result in security vulnerabilities to the airplane's systems. The... network sources. The architecture and network configuration may allow the exploitation of network...

  15. DESIGN ASPECTS IN AIRPLANE EVOLUTION

    Directory of Open Access Journals (Sweden)

    ENUŞ Marilena

    2013-11-01

    Full Text Available The paper proposes to present a few important aspects from aerodynamics and aerospace technology. It also, presents important points regarding the improvement of airplanes as a result of research in shape modelling, materials, aerodynamics and 3d design. Several examples based on constructive structures are offered. The embodiment design of a traditional airplane is presented in order to offer directions of conceptual development for improving its performance parameters and shapes. The virtual scale models are created by computer in Catia V5, in order to provide the validation of the features and the performance of aerodynamic configuration in the wind tunnel.

  16. Pitch Controllability Based on Airplane Model without Short-Period Approximation—Flight Simulator Experiment—

    Science.gov (United States)

    Sato, Osamu; Kobayashi, Osamu

    Pitch controllability of an airplane is very important for longitudinal flying qualities, therefore, much research has been conducted. However, it has not been clarified why pitch handling qualities degrades in the low speed, e.g. take-off and landing flight phases. On this topic, this paper investigates the effect of several parameters of the short-period mode and phugoid mode using a flight simulator. The results show the following conclusions: The difference between the initial phase angles in two modal components in the pitch attitude response to elevator step input plays the most important role in the pitch handling qualities among modal parameters; and the difference of the two modal natural frequencies has small effect on the pitch controllability even when flight speed decreases.

  17. 飞机红外辐射特性建模与仿真%Modeling and simulation of airplane infrared characteristic

    Institute of Scientific and Technical Information of China (English)

    刘娟; 龚光红; 韩亮; 高栋栋

    2011-01-01

    Airplane's infrared radiation simulation and modeling is an important branch for synthetic nature environment. It's needed to establish the infrared radiation model accurately according to airplane's status in present. In this paper, firstly, based on synthetic nature environment as well as aerodynamics, heat transfer theory, work principle of engine, airplane's infrared radiation characteristic models including airplane-skin and engine nozzle components, exhaust plume were established under current status. Then, moving airplane's infrared radiation characteristics with working status as the input was calculated and analyzed. Finally, airplane' s infrared radiation results were obtained through the simulating model mentioned above under condition of different status. This modeling method will have an important effect on infrared platform detecting and real time scene generating in defense and military simulation system.%飞机红外辐射建模与仿真研究是综合自然环境仿真的重要分支,根据目标飞行状态建立红外辐射模型是当前仿真的需求.文中基于综合自然环境、空气动力学、传热学和发动机工作原理,建立了飞机在当前飞行状态下蒙皮及发动机尾喷管、羽流的红外辐射强度特性模型.在当前飞行状态为输入情况下,分析并计算了运动飞机的红外辐射特性,并通过仿真获到了飞机在不同状态下的红外辐射结果.此建模方法对国防军事仿真系统中的平台红外探测与实时红外场景生成具有重要意义.

  18. Ditching Tests of a 1/18-Scale Model of the Navy XP4M-1 Airplane in Langley Tank No. 2 and on an Outdoor Catapult, TED No. NACA 2362

    Science.gov (United States)

    Fisher, Lloyd J.; Hoffman, Edward L.

    1947-01-01

    Tests with a dynamically similar model of the Navy XP4M-1 airplane were made to determine the best way to land the airplane in calm and rough water, to determine its probable ditching performance, and to determine practicable modifications which could be incorporated in the design of the airplane that would improve its ditching characteristics. The results were obtained by making visual observations, by recording longitudinal decelerations,a nd by taking motion pictures of the landings. A list of conclusions from the test results is included.

  19. 77 FR 10691 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-23

    ... Operators Telex A330-52A3084, dated December 20, 2010 (for Model A330-200 and A330-300 series airplanes); All Operators Telex A330-52A3085, dated December 20, 2010 (for Model A330-200 and A330-300 series airplanes); All Operators Telex A340-52A4091, dated December 20, 2010 (for Model A340-200 and...

  20. 75 FR 70090 - Special Conditions: Bombardier Inc. Model CL-600-2E25 Airplane, Operation Without Normal...

    Science.gov (United States)

    2010-11-17

    ... Airplane, Operation Without Normal Electrical Power AGENCY: Federal Aviation Administration (FAA), DOT... without normal electrical power,'' requires safe operation in VFR conditions for at least five minutes with inoperative normal electrical power. The applicable airworthiness regulations do not...

  1. 78 FR 68985 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-18

    ... support (operator information services), 3. Passenger information systems, and, 4. Access by systems... will have more interconnected networks and systems, such as passenger entertainment and information... and connectivity of the passenger service computer network systems to the airplane critical systems...

  2. Ditching Tests of a 1/24-Scale Model of the Lockheed XR60-1 Airplane, TED No. NACA 235

    Science.gov (United States)

    Fisher, Lloyd J.; Cederborg, Gibson A.

    1948-01-01

    The ditching characteristics of the Lockheed XR60-1 airplane were determined by tests of a 1/24-scale dynamic model in calm water at the Langley tank no. 2 monorail. Various landing attitudes, flap settings, speeds, and conditions of damager were investigated. The ditching behavior was evaluated from recordings of decelerations, length of runs, and motions of the model. Scale-strength bottoms and simulated crumpled bottoms were used to reproduce probable damage to the fuselage. It was concluded that the airplane should be ditched at a landing attitude of about 5 deg with flaps full down. At this attitude, the maximum longitudinal deceleration should not exceed 2g and the landing run will be bout three fuselage lengths. Damage to the fuselage will not be excessive and will be greatest near the point of initial contact with the water.

  3. Ditching Tests of a 1/8-Scale Model of the Chance Vought XF6U-1 Airplane, TED No. NACA DE319

    Science.gov (United States)

    Fisher, Lloyd J., Jr.; McBride, Ellis E.

    1953-01-01

    Tests were made with a 1/8-scale dynamically similar model of the Chance Vought XF6U-1 airplane to study its behavior when ditched. The model was ditched in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and conditions of damage were simulated. The behavior of the model was determined from visual observations, by recording time histories of the accelerations, and by taking motion pictures of the ditchings. From the results of the tests it was concluded that the airplane should be ditched at the near-stall, tail-down attitude (12 deg). The flaps should be fully extended to obtain the lowest possible landing speed. The wing-tip tanks should be jettisoned. The underside of the fuselage will be critically damaged in a ditching and the airplane will dive violently after a run of about three fuselage lengths. Maximum longitudinal decelerations up to about 7g and maximum vertical accelerations up to about 5g will be encountered.

  4. Ditching Investigation of a 1/11-Scale Model of the Chance Vought F7U-3 Airplane, TED NO. NACA DE 360

    Science.gov (United States)

    Fisher, Lloyd J.; Windham, John O.

    1955-01-01

    An investigation was made of a 1/11-scale dynamically similar model of the Chance Vought F7U-3 airplane to study its behavior when ditched. The model was landed in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and configurations were investigated. The behavior of the model was determined from visual observations, acceleration records, and motion-picture records of the ditchings. Data are presented in tabular form, sequence photographs, time-history acceleration curves, and plots of attitude change against time after contact. From the results of the investigation, it was concluded that the airplane should be ditched at the lowest speed and highest attitude consistent with adequate control. The aft part of the fuselage and the main landing-gear doors will probably be damaged. In a calm-water ditching under these conditions the airplane will probably skip slightly and then porpoise for the remainder of the run. Maximum longitudinal decelerations will be about 3 1/2g and maximum normal accelerations will be about 7g in a landing run of about 500 feet.

  5. 77 FR 75833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ... with Airbus All Operator Telex A300-53A0391, dated August 9, 2011 (for Model A300 B4-2C, B4-103, and B4-203 airplanes); or Airbus All Operator Telex A300-57A6111, dated August 9, 2011 (for Model A300 B4-601... the airplane, in accordance with Airbus All Operator Telex A300- 53A0391, dated August 9, 2011...

  6. Wind-tunnel tests of a 1/4 scale model of the Bell XS-1 transonic airplane. 1: Longitudinal stability and control characteristics

    Science.gov (United States)

    Donlan, C. J.; Kemp, W. B., Jr.; Polhamus, E. C.

    1976-01-01

    A 1/4 scale model of the Bell XS-1 transonic aircraft was tested in the Langley 300 mile-per-hour 7 by 10 foot tunnel to determine its low speed longitudinal stability and control characteristics. Pertinent longitudinal flying qualities expected of the XS-1 research airplane were estimated from the results of these tests including the effects of compressibility likely to be encountered at speeds below the force break. It appears that the static longitudinal stability and elevator control power will be adequate, but that the elevator control force gradient in steady flight will be undesirably low for all configurations. It is suggested that a centering spring be incorporated in the elevator control system of the airplane in order to increase the control force gradient in steady flight and in maneuvers.

  7. 客机交易议价模型研究%The Bargaining Model for Commercial Airplane Trade

    Institute of Scientific and Technical Information of China (English)

    赵星晨

    2016-01-01

    由于交易的特殊性,客机的成交价格和目录价格之间往往存在较大差异,而且具体差异程度由于商业保密的原因难以被外界获知。本文从不完全信息动态博弈的角度,利用Zeuthen模型,对客机交易的过程和结果进行了研究,分析了交易双方在不同报价策略情况下合同成交价格的变化,并讨论了交易双方的议价能力,得到的结果具有合理性和参考价值。%Due to the highly business sensitivity and confidentiality, the list price and contract price of airplane often have huge difference, the extent of which is unknown to the public. Based on Zeuthen model, took an example of the dynamic game of incomplete information, this paper analyzed the process of negotiation, studied the relationships between ending contract prices and initial bids, as well as discussed the implications of bidding strategy on bargaining powers. The results are reasonable and helpful for decision-making.

  8. 77 FR 32060 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-31

    .... Note 2 to paragraph (g)(4) of this AD: Airbus A318/A319/A320/ A321 Maintenance Manual Task 47-10-43-920... and -112 airplanes; and all Model A319, A320, and A321 series airplanes. The existing AD currently..., Amendment 39-16097 (74 FR 62219, November 27, 2009), Airbus has issued A318/A319/A320/A321...

  9. Wind Tunnel Testing of a 120th Scale Large Civil Tilt-Rotor Model in Airplane and Helicopter Modes

    Science.gov (United States)

    Theodore, Colin R.; Willink, Gina C.; Russell, Carl R.; Amy, Alexander R.; Pete, Ashley E.

    2014-01-01

    In April 2012 and October 2013, NASA and the U.S. Army jointly conducted a wind tunnel test program examining two notional large tilt rotor designs: NASA's Large Civil Tilt Rotor and the Army's High Efficiency Tilt Rotor. The approximately 6%-scale airframe models (unpowered) were tested without rotors in the U.S. Army 7- by 10-foot wind tunnel at NASA Ames Research Center. Measurements of all six forces and moments acting on the airframe were taken using the wind tunnel scale system. In addition to force and moment measurements, flow visualization using tufts, infrared thermography and oil flow were used to identify flow trajectories, boundary layer transition and areas of flow separation. The purpose of this test was to collect data for the validation of computational fluid dynamics tools, for the development of flight dynamics simulation models, and to validate performance predictions made during conceptual design. This paper focuses on the results for the Large Civil Tilt Rotor model in an airplane mode configuration up to 200 knots of wind tunnel speed. Results are presented with the full airframe model with various wing tip and nacelle configurations, and for a wing-only case also with various wing tip and nacelle configurations. Key results show that the addition of a wing extension outboard of the nacelles produces a significant increase in the lift-to-drag ratio, and interestingly decreases the drag compared to the case where the wing extension is not present. The drag decrease is likely due to complex aerodynamic interactions between the nacelle and wing extension that results in a significant drag benefit.

  10. 一种计算机支持的飞机协同设计中的感知模型%An Awareness Model for Airplane Cooperative Design

    Institute of Scientific and Technical Information of China (English)

    周安宁; 刘毅; 李文正

    2011-01-01

    为了实现飞机设计中的协同感知,针对其学科多、设计流程复杂的特点,通过研究飞机协同设计中涉及的感知信息及其关联、层次,以协同对象附加设计资源分配、产品结构、工作流、设计意图等工程背景信息的方式建立了一种感知模型.该模型使用设计资源空间呈现不同学科在同一物理量上的冲突;针对不同深度的感知需求设计呈现模式,并据此给出实现协同感知所需传输的数据和格式;基于CATIA实现感知模型原型,为设计人员提供自主、一致的工作视图,呈现不同深度的感知信息.最后通过实例显示,文中模型满足飞机协同设计的感知要求,有助于高效、流畅地完成设计任务.%Because of varied disciplines and complex processes in airplane design, this paper presents an awareness model to achieve cooperative awareness in airplane cooperative design. To conform to the awareness information involved in airplane cooperative design and its hierarchy, the model is attached with engineering contexts, such as design resource allocation, product structure, design mission in work flow and design intention. The concept of design resource space is introduced, in which the conflict of some physical quantity among varied disciplines is demonstrated. Then the representation modes and data format for transmitting are designed for various depth of awareness requirements. And then, a prototype based on the CATIA software is developed to provide intuitive displaying of design objects with consistency and locally controlled viewpoint. At last, an example is used to show that the model satisfies cooperative awareness in airplane design and can boost airplane design with more smoothness and efficiency.

  11. Ditching Investigation of a 1/10-Scale Model of the Grumman F9F-2 Airplane, TED No. NACA DE 335

    Science.gov (United States)

    Fisher, Lloyd J.; McBride, Ellis E.

    1955-01-01

    An investigation was made of a 1/10-scale dynamically similar model of the Grumman FgF-2 airplane to study its behavior when ditched. The model was landed in calm water at the Langley Tank No. 2 monorail. Various landing attitudes, speeds, and configurations were investigated. The behavior of the model was determined from visual observations, acceleration records, and motion-picture records of the ditchings. Data are presented in tabular form, sequence photographs, time-history acceleration curves, and plots of attitude and speed against distance after contact.

  12. 77 FR 55159 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-07

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 737-700, -700C, -800... certain The Boeing Company Model 737-700, -700C, -800, and -900ER series airplanes, Model 747-400F...

  13. 77 FR 69573 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2012-11-20

    ... takeoff. The primary flight controls consist of hydraulically powered fly-by-wire elevators, aileron and...) Longitudinal Static Stability: Static longitudinal stability on airplanes with mechanical links to the pitch... result in significant changes in attitude, airspeed or load factor. A predictable pitch response is...

  14. 78 FR 11560 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2013-02-19

    ... flight controls consist of hydraulically powered fly-by-wire elevators, aileron and rudder, controlled by...) Longitudinal Static Stability: Static longitudinal stability on airplanes with mechanical links to the pitch... result in significant changes in attitude, airspeed or load factor. A predictable pitch response is...

  15. 78 FR 8961 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Hydrophobic Coatings in Lieu of...

    Science.gov (United States)

    2013-02-07

    ... for normal takeoff. The primary flight controls consist of hydraulically powered fly-by-wire elevators... airplane is at higher-than-normal pitch angle. Type Certification Basis Under the provisions of 14 CFR 21... higher than normal pitch attitude. In these cases, areas of airflow disturbance or separation on the...

  16. 75 FR 55455 - Airworthiness Directives; The Boeing Company Model 737-700 (IGW) Series Airplanes Equipped With...

    Science.gov (United States)

    2010-09-13

    ..., Incorporation by reference, Safety. Adoption of the Amendment 0 Accordingly, under the authority delegated to me... electrical connections required for auxiliary tank operation, and stow them at the auxiliary tank interface... them. (4) Disconnect all fuel feed and fuel vent plumbing interfaces with airplane original...

  17. 76 FR 57625 - Special Conditions: Boeing Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes...

    Science.gov (United States)

    2011-09-16

    ... associated with the installation of a dual Class 3 electronic flight bag (EFB) system that contains... governing installation of batteries in large, transport-category airplanes were derived from Civil Air Regulations (CAR) part 4b.625(d) as part of the re-codification of CAR 4b that established 14 CFR part 25 in...

  18. 78 FR 11553 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2013-02-19

    ... Airplane; Electronic Flight Control System: Control Surface Awareness and Mode Annunciation AGENCY: Federal... control system. The applicable airworthiness regulations do not contain adequate or appropriate safety... a fly-by-wire electronic flight control system and no direct coupling from the flightdeck controller...

  19. 78 FR 68986 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-18

    ... following novel or unusual design features: An onboard computer network system, and a network extension... and connectivity capabilities of the airplane's onboard network computer systems, which may allow access to or by external computer systems and networks. This onboard network system will be composed of...

  20. 78 FR 67320 - Special Conditions: Airbus, Model A350-900 series Airplane; Pitch and Roll Limiting by Electronic...

    Science.gov (United States)

    2013-11-12

    ... feature(s) associated with the Electronic Flight Control System that limits pitch and roll attitude...; Pitch and Roll Limiting by Electronic Flight Control System AGENCY: Federal Aviation Administration (FAA... Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue...

  1. 76 FR 8610 - Airworthiness Directives; Airbus Model A340-200, -300, -500, and -600 Series Airplanes

    Science.gov (United States)

    2011-02-15

    ... structure, which could result in reduced structural integrity of the airplane. This AD requires actions that... fatigue cracking, damage, and corrosion in certain structure, which could result in reduced structural... personal information you provide. We will also post a report summarizing each substantive verbal contact...

  2. 75 FR 82337 - Airworthiness Directives; The Boeing Company Model 777-200, -300, and -300ER Series Airplanes

    Science.gov (United States)

    2010-12-30

    ... airplane, and changing the wiring; and performing certain bonding resistance measurements and reworking the... procedures for changing the wiring of the ELMS P110 left power management panel. GE Aviation Service Bulletin... left power management panel by incorporating wiring changes, in accordance with the Accomplishment...

  3. 76 FR 10213 - Special Conditions: Embraer Model EMB-135BJ (Legacy 650) Airplanes, Limit Engine Torque Loads for...

    Science.gov (United States)

    2011-02-24

    ... engine mounts, pylons and adjacent supporting airframe structure must be designed to withstand 1g level... developed from these conditions are to be multiplied by a factor of 1.0 when applied to engine mounts and... 650) Airplanes, Limit Engine Torque Loads for Sudden Engine Stoppage AGENCY: Federal...

  4. 77 FR 26663 - Airworthiness Directives; The Boeing Company Model 767-200, -300, -300F, and -400ER Series Airplanes

    Science.gov (United States)

    2012-05-07

    ... rework limits are valid when winglets are installed. APB added that including these airplanes will reduce... fail-safe straps when reviewing the SRM for the correct rework limits. CAL believes the corrosion...), which include inspection, repair, and rework limits but does not contain specific procedures...

  5. 75 FR 1536 - Airworthiness Directives; The Boeing Company Model 737-600, -700, and -800 Series Airplanes

    Science.gov (United States)

    2010-01-12

    ... valves, fueling manifold, fuel temperature sensor, and motor operated fuel shutoff valve adapter plate..., -700, and -800 series airplanes. This AD requires an inspection of the free flange, vertical web, and... assurance inspection at the final assembly plant. We are issuing this AD to prevent cracks from...

  6. 76 FR 41045 - Special Conditions; Gulfstream Aerospace LP (GALP) Model G250 Airplane, Design Roll-Maneuver...

    Science.gov (United States)

    2011-07-13

    ... approximately 3,400 nautical miles. Airplane dimensions are 61.69-foot wing span, 66.6-foot overall length, and..., the torsional flexibility of the wing must be considered in accordance with Sec. 25.301(b): In lieu...

  7. 78 FR 52107 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Science.gov (United States)

    2013-08-22

    ... installation of batteries in large transport category airplanes were derived from Civil Air Regulations (CAR... 1965. The new battery requirements, Sec. 25.1353(c)(1) through (c)(4), basically reworded the CAR... requirements, are established to ensure the availability of electrical power from the batteries when needed. In...

  8. 78 FR 13463 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-28

    ...-042-AD; Amendment 39-17284; AD 2012-25-03] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... applies to certain The Boeing Company Model 757 airplanes. That AD incorrectly identified certain actions... windshield. For certain The Boeing Company Model 757 airplanes, AD 2012-25-03 also specifies...

  9. 78 FR 25898 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-03

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747 series airplanes. The existing AD currently requires inspection of the fuselage... Boeing Company Model 747 series airplanes. AD 90-23-14 superseded AD 85-17-05, Amendment 39-5123...

  10. 77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-04

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... (AD) that applies to certain The Boeing Company Model 737-200, -200C, - 300, and -400 series airplanes...-13 R1, Amendment 39-12317 (66 FR 36146, July 11, 2001), for certain The Boeing Company Model...

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

    Science.gov (United States)

    2013-09-19

    ... Federal Aviation Administration 14 CFR Part 39 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..., 2012) (``AD 2012-12-08''), for certain The Boeing Company Model 777-200 and -300 series airplanes....

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

    Science.gov (United States)

    2013-12-09

    ... Federal Aviation Administration 14 CFR Part 39 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..., 1997), for all The Boeing Company Model MD-90-30 airplanes. AD 97-11-07 requires revising...

  13. 78 FR 15332 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-11

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... (AD) that applies to all The Boeing Company Model 737-300, -400, and - 500 series airplanes. The... (73 FR 15397, March 24, 2008), for all The Boeing Company Model 737-300, - 400, and -500...

  14. 78 FR 22806 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-04-17

    ..., Inc. Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes, serial numbers 5001 through 5194 inclusive. (2) Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes, serial numbers 5301 through 5665 inclusive, and 5701 through 5918 inclusive. (d) Subject Air Transport Association (ATA) of America...

  15. 78 FR 75284 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Flight...

    Science.gov (United States)

    2013-12-11

    ... airplanes will incorporate the following novel or unusual design features: An electronic flight control...-1A11 series airplanes. These airplanes will have a novel or unusual design feature associated with an electronic flight control system that contains fly-by-wire control laws, including envelope protections,...

  16. High Altitude Long Endurance UAV Analysis Model Development and Application Study Comparing Solar Powered Airplane and Airship Station-Keeping Capabilities

    Science.gov (United States)

    Ozoroski, Thomas A.; Nickol, Craig L.; Guynn, Mark D.

    2015-01-01

    There have been ongoing efforts in the Aeronautics Systems Analysis Branch at NASA Langley Research Center to develop a suite of integrated physics-based computational utilities suitable for modeling and analyzing extended-duration missions carried out using solar powered aircraft. From these efforts, SolFlyte has emerged as a state-of-the-art vehicle analysis and mission simulation tool capable of modeling both heavier-than-air (HTA) and lighter-than-air (LTA) vehicle concepts. This study compares solar powered airplane and airship station-keeping capability during a variety of high altitude missions, using SolFlyte as the primary analysis component. Three Unmanned Aerial Vehicle (UAV) concepts were designed for this study: an airplane (Operating Empty Weight (OEW) = 3285 kilograms, span = 127 meters, array area = 450 square meters), a small airship (OEW = 3790 kilograms, length = 115 meters, array area = 570 square meters), and a large airship (OEW = 6250 kilograms, length = 135 meters, array area = 1080 square meters). All the vehicles were sized for payload weight and power requirements of 454 kilograms and 5 kilowatts, respectively. Seven mission sites distributed throughout the United States were selected to provide a basis for assessing the vehicle energy budgets and site-persistent operational availability. Seasonal, 30-day duration missions were simulated at each of the sites during March, June, September, and December; one-year duration missions were simulated at three of the sites. Atmospheric conditions during the simulated missions were correlated to National Climatic Data Center (NCDC) historical data measurements at each mission site, at four flight levels. Unique features of the SolFlyte model are described, including methods for calculating recoverable and energy-optimal flight trajectories and the effects of shadows on solar energy collection. Results of this study indicate that: 1) the airplane concept attained longer periods of on

  17. 78 FR 53078 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-28

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... certain The Boeing Company Model 747-200B, -200C, -200F, -300, and 747SR series airplanes. This proposed... directive (AD): The Boeing Company: Docket No. FAA-2013-0704; Directorate Identifier 2013-NM-074-AD....

  18. 76 FR 78574 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-19

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... all The Boeing Company Model 767 airplanes. This proposed AD was prompted by reports of cracks of the... fitting, and contacting The Boeing Company for repair instructions and doing the repair. The...

  19. 78 FR 21854 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-12

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice... certain The Boeing Company Model 747-400 and -400F series airplanes. This proposed AD was prompted by a... FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): The Boeing...

  20. 77 FR 31167 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-05-25

    ...-17059; AD 2012-10-10] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY... airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was prompted by reports... airworthiness directive (AD): 2012-10-10 The Boeing Company: Amendment 39-17059; Docket No. FAA-...

  1. 77 FR 36129 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-18

    ... Series 700, 701, & 702) airplanes, serial numbers 10003 through 10331 inclusive. (2) Bombardier, Inc. Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 through 15279 inclusive. (d) Subject Air Transport Association (ATA) of America Code 36...

  2. 78 FR 65176 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-10-31

    ..., -106, -201, -202, -301, -311, and - 315 airplanes: Serial numbers 003 through 672 inclusive. (2) Model DHC-8-400, -401, and -402 airplanes: Serial numbers 4003 through 4372 inclusive. (d) Subject Air Transport Association (ATA) of America Code 27: Flight controls. (e) Reason This AD was prompted by reports...

  3. 78 FR 51055 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-08-20

    ... category. (1) Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial...-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 and subsequent. (d) Subject Air Transport Association (ATA) of America Code 32: Landing gear. (e) Reason This AD was prompted by a report of...

  4. 78 FR 22439 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-16

    ... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. The existing... around the galley service doorway hinge cutouts, add inspections of certain repaired structure at...

  5. 77 FR 45518 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-01

    ... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC- 9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes... the wing structure not supporting the limit load condition, which could lead to loss of...

  6. 78 FR 49906 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-16

    ...-026-AD; Amendment 39-17527; AD 2013-15-11] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This AD was prompted... structure and result in loss of airplane control due to lack of horizontal stabilizer support. DATES:...

  7. 77 FR 21426 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ...-020-AD; Amendment 39-17013; AD 2012-07-07] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 747 airplanes. This AD was prompted..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  8. 78 FR 49217 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ... Federal Aviation Administration 14 CFR Part 39 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...

  9. 78 FR 58962 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-25

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747 series airplanes. ] AD 89-12-10 currently requires replacement of certain... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data &...

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

    Science.gov (United States)

    2012-04-10

    ...-208-AD; Amendment 39-17012; AD 2012-07-06] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was...: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention:...

  11. 77 FR 24835 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-26

    ...-217-AD; Amendment 39-17031; AD 2012-08-14] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 767 airplanes. This AD was... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707,...

  12. 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,...

  13. 77 FR 1 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-01-03

    ...-16907; AD 2011-27-05] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes AGENCY... are superseding an existing airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. That AD currently requires an inspection of the main landing gear...

  14. Measurements and Analysis of the Motion of a Canard Airplane Model in Gusts

    Science.gov (United States)

    1940-04-01

    ation. An adverso pitching motion may arise to increaso further the acceleration increment. It is therefore felt that these factors should be taken...referred to o.,g. of model) Figure 6.- History of evento the 3.7-foot gust gradient. in Figure 7.- History of evente in :: the 8.2-f oot guBt gradient

  15. 76 FR 53301 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-08-26

    ...-16787; AD 2011-18-05] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000... describes the unsafe condition as: Corrosion damage has been found on the aft pressure bulkhead of SAAB 2000... been found on the aft pressure bulkhead of SAAB 2000 aeroplanes, located on the rear side of the...

  16. Mars Gashopper Airplane Project

    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...

  17. Hovering and Transition Flight Tests of a 1/5-Scale Model of a Jet-Powered Vertical-Attitude VTOL Research Airplane

    Science.gov (United States)

    Smith, Charles C., Jr.

    1961-01-01

    An experimental investigation has been made to determine the dynamic stability and control characteristics of a 1/5-scale flying model of a jet-powered vertical-attitude VTOL research airplane in hovering and transition flight. The model was powered with either a hydrogen peroxide rocket motor or a compressed-air jet exhausting through an ejector tube to simulate the turbojet engine of the airplane. The gyroscopic effects of the engine were simulated by a flywheel driven by compressed-air jets. In hovering flight the model was controlled by jet-reaction controls which consisted of a swiveling nozzle on the main jet and a movable nozzle on each wing tip; and in forward flight the model was controlled by elevons and a rudder. If the gyroscopic effects of the jet engine were not represented, the model could be flown satisfactorily in hovering flight without any automatic stabilization devices. When the gyroscopic effects of the jet engine were represented, however, the model could not be controlled without the aid of artificial stabilizing devices because of the gyroscopic coupling of the yawing and pitching motions. The use of pitch and yaw dampers made these motions completely stable and the model could then be controlled very easily. In the transition flight tests, which were performed only with the automatic pitch and yaw dampers operating, it was found that the transition was very easy to perform either with or without the engine gyroscopic effects simulated, although the model had a tendency to fly in a rolled and sideslipped attitude at angles of attack between approximately 25 deg and 45 deg because of static directional instability in this range.

  18. Wind-Tunnel Investigation of Effects of Unsymmetrical Horizontal-Tail Arrangements on Power-on Static Longitudinal Stability of a Single-Engine Airplane Model

    Science.gov (United States)

    Purser, Paul E.; Spear, Margaret F.

    1947-01-01

    A wind-tunnel investigation has been made to determine the effects of unsymmetrical horizontal-tail arrangements on the power-on static longitudinal stability of a single-engine single-rotation airplane model. Although the tests and analyses showed that extreme asymmetry in the horizontal tail indicated a reduction in power effects on longitudinal stability for single-engine single-rotation airplanes, the particular "practical" arrangement tested did not show marked improvement. Differences in average downwash between the normal tail arrangement and various other tail arrangements estimated from computed values of propeller-slipstream rotation agreed with values estimated from pitching-moment test data for the flaps-up condition (low thrust and torque) and disagreed for the flaps-down condition (high thrust and torque). This disagreement indicated the necessity for continued research to determine the characteristics of the slip-stream behind various propeller-fuselage-wing combinations. Out-of-trim lateral forces and moments of the unsymmetrical tail arrangements that were best from consideration of longitudinal stability were no greater than those of the normal tail arrangement.

  19. 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.

  20. 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.

  1. 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....

  2. 78 FR 67291 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Design...

    Science.gov (United States)

    2013-11-12

    ... design feature associated with an electronic flight control system that provides roll control of the... design features: The airplanes are equipped with an electronic flight control system that provides... Airplanes; Design Roll Maneuver Condition AGENCY: Federal Aviation Administration (FAA), DOT. ACTION:...

  3. 77 FR 64029 - Special Conditions: Airbus Model A318, A319, A320, and A321 Series Airplanes; Design Dive Speed

    Science.gov (United States)

    2012-10-18

    ... April 11, 2000 (65 FR 19477-19478), as well as at http: DocketsInfo.dot.gov/. Docket: Background... Series Airplanes; Design Dive Speed AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final... airplanes. These design features include a high-speed protection system. The applicable...

  4. Wind-tunnel investigation of the effect of power and flaps on the static lateral characteristics of a single-engine low-wing airplane model

    Science.gov (United States)

    Tamburello, Vito; Weil, Joseph

    1947-01-01

    Tests were made in the Langley 7- by 10-foot tunnel to determine the lateral-stability characteristics with and without power of a model of a typical low-wing single-engine airplane with flaps neutral, with a full-span single slotted flap, and with a full-span double slotted flap. Power decreased the dihedral effect regardless of flap condition, and the double-slotted flap configuration showed the most marked decrease. The usual effect of power in increasing the directional stability was also shown. Deflection of the single slotted flap produced negative dihedral effect, but increased the directional stability. The effects of deflecting the double slotted flap were erratic and marked changes in both effective dihedral and directional stability occurred. The addition of the tail surfaces always contributed directional stability and generally produced positive dihedral effect.

  5. 77 FR 16661 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-22

    ...)(1), (c)(2), and (c)(3) of this AD; certificated in any category; all manufacturer serial numbers; with pitot probes having Goodrich part number (P/N) 0851HL, serial numbers 267328 through 270714...) Model A340-541 and -642 airplanes. (d) Subject Air Transport Association (ATA) of America Code 34...

  6. Modeling and simulation of solar-powered airplane for the conceptual design%太阳能飞机方案设计阶段建模与仿真

    Institute of Scientific and Technical Information of China (English)

    赵凯; 祝小平; 周洲

    2011-01-01

    This paper presents a simulation model of solar-powered airplane for the conceptual design. Components of the model include energy flow, solar energy collection, secondary battery, and airplane motion and energy management. In the mean time, two concepts of solar-powered airplane were compared respectively with fixed solar planes and rotational solar planes on their efficiency of solar energy capture and airplane endurance. It was seen that the second concept showed obvious advantage on the efficiency of solar energy capture and its endurance was longer during the days with scarce solar radiation. Those discussed in the paper present that the model could be used for verifying and analyzing the concepts of solar-powered airplane.%建立了太阳能飞机方案设计阶段的仿真模型,包括能量流动、太阳能采集、蓄电池、飞机运动及能量管理等部分.通过仿真比较了太阳能电池固定安装和可转动安装两种飞机方案的太阳能采集效率和续航性能.仿真结果表明,方案2的设计采集效率优势明显,在光照匮乏时飞机飞行时间较长.该模型可用于太阳能飞机方案设计阶段的验证分析,为方案的选择和改进提供依据.

  7. 77 FR 71357 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2012-11-30

    ... applies to Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes, all serial numbers, that are... Transport Association of America (ATA) Code 8: Leveling and Weighing. (e) Reason This AD was prompted by...

  8. 78 FR 42724 - Airworthiness Directives; Beechcraft Corporation Airplanes

    Science.gov (United States)

    2013-07-17

    ... following Beechcraft Corporation airplanes, certificated in any category: Models Serial Nos. (1) 1900 UA-3... (ATA) of America Code 27, Flight Controls. (e) Unsafe Condition This AD was prompted by reports of the...

  9. 78 FR 42417 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Science.gov (United States)

    2013-07-16

    ... applies to Pilatus Aircraft Ltd. Model PC-6/B2-H4 airplanes, serial numbers 735, 863, 909, 923, 948, 956... Transport Association of America (ATA) Code 53: Fuselage. ] (e) Reason This AD was prompted by mandatory...

  10. 77 FR 51717 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Information Airbus has issued All Operator Telex A300-53A0391, dated August 9, 2011 (for Model A300 B4-2C, B4-103, and B4-203 airplanes); and All Operator Telex A300-57A6111, dated August 9, 2011 (for Model A300... accordance with Airbus All Operator Telex A300-53A0391, dated August 9, 2011 (for Model A300 B4-2C,...

  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......, 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...

  12. Flatulence on airplanes

    DEFF Research Database (Denmark)

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

    2013-01-01

    , 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...... 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....

  13. Effects of Boattail Area Contouring and Simulated Turbojet Exhaust on the Loading and Fuselage-tail Component Drag of a Twin-engine Fighter-type Airplane Model

    Science.gov (United States)

    Foss, Willard E , Jr; Runckel, Jack F; Lee, Edwin E , Jr

    1958-01-01

    An investigation of a twin-engine fighter-type airplane model has been conducted in the Langley 16-foot transonic tunnel to determine the effect on drag of a fuselage volume addition incorporating streamline contouring and more extensive boattailing of the engine shrouds. The effect of hot exhausts from the turbojet engines was simulated with hydrogen peroxide gas generators using scaled nonafterburning engine nozzles. Afterbody pressure distributions, base drag coefficients, and forces on the fuselage-tail configurations are presented at Mach numbers from 0.80 to 1.05 angles of attack of 0 degree and 4 degrees for jet pressure ratios from 1 to 7. The effect of jet operation on both the basic and modified models was generally to decrease base pressures but to increase most other afterbody pressures and, therefore, to result in an overall decrease in fuselage-tail component drag. The addition of volume to the basic model reduced the base drag coefficient by 0.0010 with the jets off and 0.0018 at a typical cruise operating condition of a jet pressure ratio of 3, a Mach number of 0.85, and an angle of attack of 4 degrees. The overall jet-off reduction in fuselage-tail component drag due to the volume addition was a maximum of 0.0040 at a Mach number of 0.90 for an angle of attack of 4 degrees.

  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. 75 FR 61989 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-8-31, DC-8-32, DC-8-33, DC-8-41...

    Science.gov (United States)

    2010-10-07

    ... Corporation Model DC- 8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-60F Series Airplanes; Model DC-8- 70 Series Airplanes; and Model DC-8-70F Series Airplanes AGENCY:......

  16. 75 FR 36298 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-8-31, DC-8-32, DC-8-33, DC-8-41...

    Science.gov (United States)

    2010-06-25

    ... Corporation Model DC- 8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-61 Series Airplanes; Model DC-8-70 Series Airplanes; and Model DC-8-70F Series Airplanes AGENCY:......

  17. 77 FR 66764 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ... airplanes, all manufacturer serial numbers. (d) Subject Air Transport Association (ATA) of America Code 21..., -302, -303, - 321, -322, -323, -341, -342, and -343 airplanes, all manufacturer serial numbers, except... and -243F airplanes, all manufacturer serial numbers, except for airplanes on which Airbus...

  18. Occupational asthma caused by samba (Triplochiton scleroxylon wood dust in a professional maker of wooden models of airplanes: A case study

    Directory of Open Access Journals (Sweden)

    Patrycja Krawczyk-Szulc

    2014-08-01

    Full Text Available Objectives: Wood dust is a known occupational allergen that may induce, in exposed workers, respiratory diseases including asthma and allergic rhinitis. Samba (obeche, Triplochiton scleroxylon is a tropical tree, which grows in West Africa, therefore, Polish workers are rarely exposed to it. This paper describes a case of occupational asthma caused by samba wood dust. Material and Methods: The patient with suspicion of occupational asthma due to wood dust was examined at the Department of Occupational Diseases and Clinical Toxicology in the Nofer Institute of Occupational Medicine. Clinical evaluation included: analysis of occupational history, skin prick tests (SPT to common and occupational allergens, determination of serum specific IgE to occupational allergens, serial spirometry measurements, metacholine challenge test and specific inhalation challenge test with samba dust. Results: SPT and specific serum IgE assessment revealed sensitization to common and occupational allergens including samba. Spirometry measurements showed mild obstruction. Metacholine challenge test revealed a high level of bronchial hyperactivity. Specific inhalation challenge test was positive and cellular changes in nasal lavage and induced sputum confirmed allergic reaction to samba. Conclusions: IgE mediated allergy to samba wood dust was confirmed. This case report presents the first documented occupational asthma and rhinitis due to samba wood dust in wooden airplanes model maker in Poland.

  19. Headache attributed to airplane travel ("airplane headache"): first Italian case.

    Science.gov (United States)

    Mainardi, Federico; Lisotto, Carlo; Palestini, Claudia; Sarchielli, Paola; Maggioni, Ferdinando; Zanchin, Giorgio

    2007-06-01

    A new form of headache, whose attacks seem to be stereotyped, has been recently reported; because of the peculiarity of its onset, strictly related to airplane travel, the name of "Airplane headache" was proposed. A total of 7 cases have been published. Here we present the first Italian one. Furthermore the revision of the clinical characteristics of each patient leads us to propose provisional diagnostic criteria.

  20. 76 FR 63571 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada...

    Science.gov (United States)

    2011-10-13

    ... Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada, Corp. PW610F-A Engines...: We propose to revise an existing airworthiness directive (AD) that applies to all Eclipse Aerospace... 10, 2011), for all Eclipse Aerospace, Inc. Model EA500 airplanes equipped with Pratt & Whitney...

  1. 78 FR 76736 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Side...

    Science.gov (United States)

    2013-12-19

    ... associated with side stick controllers for pitch and roll control instead of conventional wheels and columns... the comment for an association, business, labor union, etc.). DOT's complete Privacy Act Statement can.... The Bombardier C-series airplanes will use side stick controllers for pitch and roll...

  2. 75 FR 35356 - Airworthiness Directives; The Boeing Company Model 747-100, 747-200B, and 747-200F Series Airplanes

    Science.gov (United States)

    2010-06-22

    ... rapid decompression of the airplane and inability of the structure to carry fail-safe loads. DATES: We... report summarizing each substantive verbal contact we receive about this proposed AD. Discussion On July... inability of the structure to carry fail-safe loads. On June 2, 1994, we issued AD 94-12-09, Amendment...

  3. 78 FR 76734 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Seats...

    Science.gov (United States)

    2013-12-19

    ... be found in the Federal Register published on April 11, 2000 (65 FR 19477-19478), as well as at http...- bubble fuselage, sized for nominal 5-abreast seating. Each airplane's powerplant consists of two under...\\ installed per seat place. The panel may consist of either a single component or multiple components in...

  4. 78 FR 75287 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Flight...

    Science.gov (United States)

    2013-12-11

    ... Privacy Act Statement can be found in the Federal Register published on April 11, 2000 (65 FR 19477-19478..., blended double- bubble fuselage, sized for nominal 5-abreast seating. Each airplane's powerplant consists... significant change (or multiple changes) occurs in the EFCS control laws as the limit is approached...

  5. Simulated airplane headache

    DEFF Research Database (Denmark)

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

    2017-01-01

    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 E2 (PGE2), cortisol, facial thermo-images, blood...... 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 PGE2, 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. CONCLUSION: The pressure chamber proved useful not only to provoke AH-like attack but also to study potential biomarkers for AH in this study. PGE2, and cortisol levels together with SPO presented dysregulation during the simulated AH-attack in affected individuals...

  6. Tabulated pressure measurements of a NASA supercritical-wing research airplane model with and without fuselage area-rule additions at Mach 0.25 to 1.00

    Science.gov (United States)

    Harris, C. D.; Bartlett, D. W.

    1972-01-01

    Basic pressure measurements were made on a 0.087-scale model of a supercritical wing research airplane in the Langley 8 foot transonic pressure tunnel at Mach numbers from 0.25 to 1.00 to determine the effects on the local aerodynamic loads over the wing and rear fuselage of area-rule additions to the sides of the fuselage. In addition, pressure measurements over the surface of the area-rule additions themselves were obtained at angles of sideslip of approximately - 5 deg, 0 deg, and 5 deg to aid in the structural design of the additions. Except for representative figures, results are presented in tabular form without analysis.

  7. 78 FR 29669 - Airworthiness Directives; DASSAULT AVIATION Airplanes

    Science.gov (United States)

    2013-05-21

    ... Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G airplanes; Model MYSTERE-FALCON 200... inability to put out a fire in an engine, auxiliary power unit, or rear compartment. DATES: We must receive... submitting comments. Fax: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations,...

  8. 78 FR 68355 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2013-11-14

    ... Jet Falcon; Model Mystere-Falcon 200 airplanes; and Model Mystere-Falcon 20-C5, 20-D5, 20-E5, and 20... could impact the capability to extinguish a fire in an engine, auxiliary power unit, or rear compartment... of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New...

  9. 77 FR 49708 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-17

    ...-066-AD; Amendment 39-17159; AD 2012-16-12] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 707 airplanes, and Model 720 and... airworthiness directive (AD): 2012-16-12 The Boeing Company: Amendment 39-17159; Docket No. FAA-...

  10. 77 FR 24355 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-24

    ...-265-AD; Amendment 39-17026; AD 2012-08-09] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER... to The Boeing Company Model 777-200, -200LR, - 300, -300ER, and 777F series airplanes,...

  11. 77 FR 75827 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-26

    ...-190-AD; Amendment 39-17292; AD 2012-25-11] RIN 2120-AA64 Airworthiness Directives; The Boeing Company.... SUMMARY: We are superseding an existing airworthiness directive (AD) for certain The Boeing Company Model... certain The Boeing Company Model 757-200, -200CB, and -300 series airplanes. AD 2012-15-15...

  12. 78 FR 26286 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-06

    ... airworthiness directive (AD) for all The Boeing Company Model 717-200 airplanes. That NPRM proposed requiring... rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to all The Boeing Company Model... directive (AD): The Boeing Company: Docket No. FAA-2012-0425; Directorate Identifier 2011-NM-273-AD....

  13. Quantifying Aerial Concentrations of Maize Pollen in the Atmospheric Surface Layer Using Remote-Piloted Airplanes and Lagrangian Stochastic Modeling

    Science.gov (United States)

    Aylor, Donald E.; Boehm, Matthew T.; Shields, Elson J.

    2006-07-01

    The extensive adoption of genetically modified crops has led to a need to understand better the dispersal of pollen in the atmosphere because of the potential for unwanted movement of genetic traits via pollen flow in the environment. The aerial dispersal of maize pollen was studied by comparing the results of a Lagrangian stochastic (LS) model with pollen concentration measurements made over cornfields using a combination of tower-based rotorod samplers and airborne radio-controlled remote-piloted vehicles (RPVs) outfitted with remotely operated pollen samplers. The comparison between model and measurements was conducted in two steps. In the first step, the LS model was used in combination with the rotorod samplers to estimate the pollen release rate Q for each sampling period. In the second step, a modeled value for the concentration Cmodel, corresponding to each RPV measured value Cmeasure, was calculated by simulating the RPV flight path through the LS model pollen plume corresponding to the atmospheric conditions, field geometry, wind direction, and source strength. The geometric mean and geometric standard deviation of the ratio Cmodel/Cmeasure over all of the sampling periods, except those determined to be upwind of the field, were 1.42 and 4.53, respectively, and the lognormal distribution corresponding to these values was found to fit closely the PDF of Cmodel/Cmeasure. Model output was sensitive to the turbulence parameters, with a factor-of-100 difference in the average value of Cmodel over the range of values encountered during the experiment. In comparison with this large potential variability, it is concluded that the average factor of 1.4 between Cmodel and Cmeasure found here indicates that the LS model is capable of accurately predicting, on average, concentrations over a range of atmospheric conditions.

  14. 78 FR 48286 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-08

    ... A318, A319, A320, and ] A321 series airplanes. This AD requires an inspection to determine airplane... 37241, June 27, 2011)] to require an amendment of the applicable Airplane Flight Manual (AFM... Airbus Service Bulletin (SB) A320-32-1409), in combination with certain LGCIUs and MLG door...

  15. 78 FR 11554 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Limit Pilot Forces for Sidestick Control

    Science.gov (United States)

    2013-02-19

    ... controls consist of hydraulically powered fly-by-wire elevators, ailerons, and rudder, controlled by the pilot or copilot sidestick. Current regulations reference pilot effort loads for the cockpit pitch and roll controls that are based on a two-handed effort. The cockpit roll and pitch controls for the Model...

  16. 78 FR 25846 - Special Conditions: Airbus, Model A340-600 Series Airplanes; Lower Deck Crew Rest Compartments

    Science.gov (United States)

    2013-05-03

    ...; Lower Deck Crew Rest Compartments AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final... unusual design feature associated with the installation of lower deck crew rest (LDCR) compartments. The... certificate to install a lower deck crew rest (LDCR) compartment in Airbus Model A340-600 series...

  17. 78 FR 21037 - Special Conditions: Airbus Model A330-200 Airplanes; Bulk Cargo Lower Deck Crew Rest Compartments

    Science.gov (United States)

    2013-04-09

    ... Cargo Lower Deck Crew Rest Compartments AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... unusual design feature associated with the installation of bulk cargo lower deck crew rest compartments... supplemental type certificate to install a bulk cargo lower deck crew rest compartment in the Airbus Model...

  18. 75 FR 47180 - Airworthiness Directives; The Boeing Company Model 767-200, -300, and -300F Series Airplanes

    Science.gov (United States)

    2010-08-05

    ... from a short circuit in an adjacent audio select panel. We are issuing this AD to prevent inadvertent... to inadvertent electrical current from a short circuit in an adjacent audio select panel. We are.... ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model...

  19. 78 FR 65235 - Special Conditions: Learjet Inc., Model LJ-200-1A10 Airplane; Crashworthiness, Emergency Landing...

    Science.gov (United States)

    2013-10-31

    ... configuration. The pressure fuselage will consist of monolithic carbon fiber reinforced plastic (CFRP) skin... The Model LJ-200 fuselage is fabricated using carbon fiber reinforced plastic (CFRP) skins with.... These features are associated with a hybrid construction that uses both composite and metallic...

  20. Ditching Tests with a 1/12-Scale Model of the Army A-26 Airplane in Langley Tank No. 2 and on an Outdoor Catapult

    Science.gov (United States)

    Jarvis, George A.; Hoffman, Edward L.

    1947-01-01

    Tests were conducted in calm water in Langley tank no. 2 and in calm and rough water at an outdoor catapult in order to determine the best way to make a forced landing of an Army A-26 airplane and to determine its probable ditching behavior. These tests were requested by the Air Materiel Command, Army Air Forces, in their letter of March 26, 1943, WEL:AW:50.

  1. Air resistance measurements on actual airplane parts

    Science.gov (United States)

    Weiselsberger, C

    1923-01-01

    For the calculation of the parasite resistance of an airplane, a knowledge of the resistance of the individual structural and accessory parts is necessary. The most reliable basis for this is given by tests with actual airplane parts at airspeeds which occur in practice. The data given here relate to the landing gear of a Siemanms-Schuckert DI airplane; the landing gear of a 'Luftfahrzeug-Gesellschaft' airplane (type Roland Dlla); landing gear of a 'Flugzeugbau Friedrichshafen' G airplane; a machine gun, and the exhaust manifold of a 269 HP engine.

  2. 78 FR 77615 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-12-24

    ... Bombardier, Inc. Model DHC-8-400 series airplanes. AD 2010-13-04 requires modifying the nose landing gear... landing gear (NLG) trailing arm pivot pin retention bolt (part number NAS6204-13D) was damaged. One... excessive frictional torque on the pivot pin and an adverse tolerance condition at the retention...

  3. 78 FR 47543 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-08-06

    .... Model DHC-8-100, -200, and -300 series airplanes. AD 2012-14-04 required replacing certain parking brake... around the parking brake accumulator end caps. We are issuing this AD to prevent failure of a parking...-002 (Parking Brake Accumulator), are installed on the aeroplanes listed in the Applicability...

  4. 77 FR 31169 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-05-25

    ...-002-AD; Amendment 39-17058; AD 2012-10-09] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... superseding an existing airworthiness directive (AD) for certain Piper Aircraft, Inc. (type certificate previously held by The New Piper Aircraft Inc.) Models PA-31T and PA-31T1 airplanes. That AD...

  5. 77 FR 57534 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-09-18

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Piper... all Piper Aircraft, Inc. Models PA-31, PA-31-325, and PA-31-350 airplanes. The existing AD currently... identified in this proposed AD, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, Florida...

  6. 78 FR 26233 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-06

    ...-17418; AD 2013-08-01] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY... airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER...): 2013-08-01 The Boeing Company: Amendment 39-17418; Docket No. FAA- 2011-1231; Directorate...

  7. 78 FR 40060 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-03

    ... Federal Aviation Administration 14 CFR Part 39 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... 2006-26-06, Amendment 39-14864 (71 FR 77586, December 27, 2006), for certain The Boeing Company...

  8. 77 FR 47329 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company... propose to rescind an existing airworthiness directive (AD) that applies to certain The Boeing Company...), for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. That...

  9. 77 FR 41041 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-12

    ...-17111; AD 2012-13-09] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY... airworthiness directive (AD) for certain The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747...): 2012-13-09 The Boeing Company: Amendment 39-17111; Docket No. FAA- 2010-1115; Directorate...

  10. 78 FR 46532 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-01

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; the Boeing Company... directive (AD) for all The Boeing Company Model 767 airplanes. That NPRM proposed to require repetitive... directive (AD): The Boeing Company: Docket No. FAA-2008-0616; Directorate Identifier 2007-NM-353-AD....

  11. 77 FR 40307 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-09

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 747-400, -400D, and... directive (AD): The Boeing Company: Docket No. FAA-2008-0620; Directorate Identifier 2007-NM-357-AD....

  12. 78 FR 63135 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company... a new airworthiness directive (AD) for certain The Boeing Company Model 767 airplanes equipped...

  13. 77 FR 42964 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-23

    ...-103-AD; Amendment 39-17095; AD 2012-12-15] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... superseding an existing airworthiness directive (AD) for The Boeing Company Model 757 Airplanes. That AD... (73 FR 25974, May 8, 2008), and adding the following new AD: 2012-12-15 The Boeing Company:...

  14. 77 FR 65506 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-29

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 757-200 and - 200PF series airplanes. The existing AD currently requires... 11, 2003), and adding the following new AD: The Boeing Company: Docket No. FAA-2012-1109;...

  15. 77 FR 29857 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-05-21

    ...-009-AD; Amendment 39-17052; AD 2012-10-03] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... superseding an existing airworthiness directive (AD) for certain The Boeing Company Model 747 series airplanes... following new AD: 2012-10-03 The Boeing Company: Amendment 39-17052; Docket No. FAA- 2011-0645;...

  16. 77 FR 48423 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-14

    ...-213-AD; Amendment 39-17154; AD 2012-16-07] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 737-500 series airplanes. This... The Boeing Company: Amendment 39-17154; Docket No. FAA- 2012-0336; Directorate Identifier...

  17. 77 FR 60296 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-03

    ...-074-AD; Amendment 39-17206; AD 2012-19-11] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 737 airplanes. This AD was... the Latest Service Information Delta (DAL), AAL, and The Boeing Company requested that the proposed...

  18. 77 FR 47267 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ...-17142; AD 2012-15-13] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY... following new AD: 2012-15-13 The Boeing Company: Amendment 39-17142; Docket No. FAA- 2009-0607; Directorate..., 2007). (c) Applicability This AD applies to all The Boeing Company Model 747-100B SUD, 747-300,...

  19. 78 FR 53633 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-08-30

    ... Bombardier, Inc. Model DHC-8-400, -401, and - 402 airplanes, certificated in any category, serial numbers (S/Ns) 4001 through 4399 inclusive. ] (d) Subject Air Transport Association (ATA) of America Code 26...-1096, 10-1096-01, or 10-1096-02 (serial number is all numeric characters), and install a new APD having...

  20. 77 FR 34874 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-12

    ... issued [inspect to determine serial number, an operational check for seizure, repetitive lubrication and... Bombardier, Inc. Model DHC-8-400, -401, and - 402 airplanes; certificated in any category; serial numbers... Transport Association (ATA) of America Code 27: Flight Controls. (e) Reason This AD was prompted by reports...

  1. 78 FR 61220 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2013-10-03

    ... installation of winglets; including serial number 602. However, the applicability in this proposed AD would... winglets; including serial number 602. (2) Model FALCON 2000 and FALCON 2000EX airplanes modified by...) Subject Air Transport Association (ATA) of America Code 27, Flight Controls. (e) Reason This AD was...

  2. 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...

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

    Science.gov (United States)

    2011-09-08

    ... Order 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR... 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...

  4. 78 FR 76040 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-12-16

    ...-AD; Amendment 39-17691; AD 99-26-19 R1] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... Airworthiness Directive (AD) 99-26-19 that applies to certain The New Piper Aircraft, Inc. Model J-2 airplanes... identified in this AD, contact Piper Aircraft, Inc., Customer Services, 2926 Piper Drive, Vero Beach, Florida...

  5. 77 FR 21420 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 680 airplanes. This..., 1601 Lind Avenue SW., Renton, Washington. For information on the availability of this material at the... refer to certain applicable AFM TCs, and incorrectly addresses the procedure change in the recently...

  6. 77 FR 12166 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-29

    ... superseding an existing airworthiness directive (AD) for certain Model 757-200, -200PF, -200CB, and -300... number six auxiliary slat track, causing electrical wires in the bundle to arc, which damaged both the..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  7. 77 FR 5730 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-02-06

    ... necessary; and, for certain MLG shock strut assemblies, replacement or rework of the apex nut. Since we...) Replacement or Rework of the Apex Nut for Model CL-600-2C10 Airplanes For any MLG shock strut assembly... hours after May 18, 2011, replace or rework the apex nut, in accordance with Part B of...

  8. 78 FR 60679 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-02

    ...-273-AD; Amendment 39-17604; AD 2013-19-22] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 717-200 airplanes. This AD was... result in damage to the adjacent structure and consequent loss of structural integrity of the...

  9. 77 FR 54848 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-06

    ... Federal Aviation Administration 14 CFR Part 39 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... not electrically bonded to primary structure of the airplane. This proposed AD would...

  10. 78 FR 17290 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-21

    ...-056-AD; Amendment 39-17375; AD 2013-05-03] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, and... measuring the electrical resistance of the bond from the adapter plate to the airplane structure, and...

  11. 77 FR 50414 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-21

    ... Federal Aviation Administration 14 CFR Part 39 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... structure, which could result in uncontrolled decompression of the airplane. DATES: We must receive...

  12. 77 FR 37793 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2012-06-25

    ...-124-AD; Amendment 39-17099; AD 2012-12-19] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... new airworthiness directive (AD) for certain the Boeing Company Model 777-200, -200LR, and -300ER... ceiling support structure of Section 41, in airplanes incorporating the overhead space utilization...

  13. 78 FR 9796 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-02-12

    ... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Models 172R and 172S... structure; and, if any damage is found, replace the fuel return line assembly. We are issuing this AD...

  14. 77 FR 65803 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-31

    ...-050-AD; Amendment 39-17234; AD 2012-21-18] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model MD-90-30 airplanes. This AD was... AD to detect and correct such cracking, which could result in the wing structure not supporting...

  15. 77 FR 65611 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-30

    ...-17229; AD 2012-21-13] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY... airworthiness directive (AD) for certain The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD... result in the wing structure not supporting the limit load condition, which could lead to loss...

  16. 78 FR 17294 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-21

    ...-054-AD; Amendment 39-17377; AD 2013-05-05] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, and... smoke and heat damage to airplane structure and equipment during ground operations, and...

  17. 78 FR 52875 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Federal Aviation Administration 14 CFR Part 39 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,...

  18. 78 FR 73457 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-12-06

    ... Federal Aviation Administration 14 CFR Part 39 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...

  19. 78 FR 49229 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ... Federal Aviation Administration 14 CFR Part 39 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...

  20. 78 FR 52838 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ...-354-AD; Amendment 39-17533; AD 2013-15-17] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  1. 78 FR 52836 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ...-352-AD; Amendment 39-17529; AD 2013-15-13] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 757 airplanes. This AD was prompted... October 1, 2013. ADDRESSES: For service information identified in this AD, contact Boeing...

  2. 77 FR 26158 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-05-03

    ...-033-AD; Amendment 39-17038; AD 2012-09-03] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab...). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model SAAB 2000 airplanes. This AD was prompted by reports of hydraulic accumulator failure. This...

  3. 78 FR 1731 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2013-01-09

    ...-079-AD; Amendment 39-17296; AD 2012-26-01] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab...). ACTION: Final rule. ] SUMMARY: We are adopting a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model SAAB 2000 airplanes. This AD was prompted by reports of chafing on the bottom panel of the...

  4. 76 FR 81889 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2011-12-29

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab... rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model SAAB 2000 airplanes. This proposed AD was prompted by reports of hydraulic accumulator...

  5. 77 FR 38224 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-06-27

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab... rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This proposed AD was prompted by reports of...

  6. 77 FR 73279 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-12-10

    ...-261-AD; Amendment 39-17276; AD 2012-24-06] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab...). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This AD was prompted by reports of stall events...

  7. 77 FR 19565 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-04-02

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab... rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B Airplanes. This proposed AD was prompted by reports...

  8. 77 FR 38470 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-06-28

    ...-116-AD; Amendment 39-17103; AD 2012-13-01] RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab...). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This AD was prompted by reports indicating that...

  9. 78 FR 49662 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Airplanes

    Science.gov (United States)

    2013-08-15

    ... INDUSTRIES S.p.A Model P-180 airplanes, all serial numbers, certificated in any category. (d) Subject Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 54; Nacelles/Pylons...

  10. Controllability and Maneuverability of Airplanes

    Science.gov (United States)

    Norton, F H; Brown, W G

    1923-01-01

    This investigation was conducted for the purpose of studying the behavior of the JN4H airplane in free flight under the action of its controls and from this to arrive at satisfactory definitions and coefficients for controllability and maneuverability. The method consisted in recording the angular velocity about the three axes, together with the air speed, control positions, and acceleration. (author)

  11. Rapid Airplane Parametric Input Design (RAPID)

    Science.gov (United States)

    Smith, Robert E.

    1995-01-01

    RAPID is a methodology and software system to define a class of airplane configurations and directly evaluate surface grids, volume grids, and grid sensitivity on and about the configurations. A distinguishing characteristic which separates RAPID from other airplane surface modellers is that the output grids and grid sensitivity are directly applicable in CFD analysis. A small set of design parameters and grid control parameters govern the process which is incorporated into interactive software for 'real time' visual analysis and into batch software for the application of optimization technology. The computed surface grids and volume grids are suitable for a wide range of Computational Fluid Dynamics (CFD) simulation. The general airplane configuration has wing, fuselage, horizontal tail, and vertical tail components. The double-delta wing and tail components are manifested by solving a fourth order partial differential equation (PDE) subject to Dirichlet and Neumann boundary conditions. The design parameters are incorporated into the boundary conditions and therefore govern the shapes of the surfaces. The PDE solution yields a smooth transition between boundaries. Surface grids suitable for CFD calculation are created by establishing an H-type topology about the configuration and incorporating grid spacing functions in the PDE equation for the lifting components and the fuselage definition equations. User specified grid parameters govern the location and degree of grid concentration. A two-block volume grid about a configuration is calculated using the Control Point Form (CPF) technique. The interactive software, which runs on Silicon Graphics IRIS workstations, allows design parameters to be continuously varied and the resulting surface grid to be observed in real time. The batch software computes both the surface and volume grids and also computes the sensitivity of the output grid with respect to the input design parameters by applying the precompiler tool

  12. Fault deducing model research of switched reluctance power system of airplane based on PHM%飞机开关磁阻发电系统故障推理模型研究

    Institute of Scientific and Technical Information of China (English)

    李宁; 雷洪利; 韩建定; 朱喜华

    2011-01-01

    开关磁阻发电系统是飞机供电系统的核心部分,为了研究飞机供电系统健康管理技术,减少故障推理模型的检测参数,满足飞机可靠性方面的要求,利用MATLAB软件对开关磁阻发电机典型电气故障进行了仿真分析,并引入记忆模块解决以往仿真过程中产生的代数环问题.然后将发电机输出电压信号利用EMD算法进行分解,将其分解后的各层频率信号的标准差作为特征量训练神经网络,得出开关磁阻发电系统的故障推理模型,本模型只需测量输出电压一个参数,减少了检测参数的数量,为开关磁阻发电系统故障预测模型及飞机整个供电系统键康管理系统的开发奠定了基础.%The switched reluctance power system is the com of airplane power system. In order to research the application of PHM in the power system of airplane, reduce the measure parameters of the fault deducing model,and satisfy the requirements of airplane dependability, the typical electric faults of SRG was carefully analyzed in this paper with MATLAB, and the memory module was used to solve the algebraic loop problem. The SRG voltage signal with EMD was analyzed, and the decomposed signal as character data was used to train the neural network and gain the fault concluding model of SRG main electrical power system. Only one parameter of the output voltage was needed to be measured with this model, which reduced the number of the measured parameters and was meaningful to the research of the prognostic model and PHM system of power system.

  13. AN AIRPLANE WITH UNCONVENTIONALLY PLACED PROPELLER POWER UNIT

    OpenAIRE

    Jan Červinka; Robert Kulhánek; Zdeněk Pátek

    2017-01-01

    The significance of the influence of operating propellers on the aircraft aerodynamic characteristics is well-known. Wind tunnel testing of an airplane model with operating propellers is a complex task regarding the required similarity of the full-scale and the model case. Matching sufficient similarity in axial and rotational velocities in the propeller slipstream is the primordial condition for the global aerodynamic similarity of the windtunnel testing. An example of the model power units ...

  14. 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.

  15. 77 FR 1622 - Airworthiness Directives; Socata Airplanes

    Science.gov (United States)

    2012-01-11

    ... 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...

  16. 78 FR 25666 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-02

    ... Flight Manual (AFM) by inserting Airbus A318/A319/A320/A321 Temporary Revision (TR) TR286, Issue 1.0... A318, A319, A320, and A321 series airplanes. The existing AD currently requires revising the airplane flight manual (AFM) to advise the flightcrew of emergency procedures for addressing angle of attack...

  17. 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...

  18. 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... 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  19. 76 FR 73496 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-29

    ..., -312, and -313 airplanes on which the repair specified in Airbus Repair Drawing R57115053, R57115051..., -311, -312, and -313 airplanes on which the repair specified in Airbus Repair Drawing R57115053... Technical Disposition F57D03012810, Issue B, dated August 18, 2003; or Airbus A330/A340...

  20. Supplementary Investigation to Determine the Effects of Center-of-Gravity Position on the Spin, Longitudinal-Trim, and Tumbling Characteristics of a 1/20-Scale Model of the Consolidated Vultee 7002 Airplane (Flying Mock-up of XF-92)

    Science.gov (United States)

    Klinar, Walter J.; Jones, Ira P., Jr.

    1948-01-01

    A supplementary wind-tunnel investigation has been conducted to determine the effect of rearward positions of the center of gravity on the spin, longitudinal-trim, and tumbling characteristics of the 1/20-scale model of the Consolidated Vultee 7002 airplane equipped with the single vertical tail. A few tests were also made with dual vertical tails added to the model. The model was ballasted to represent, the airplane in its approximate design gross weight for two center-of-gravity positions, 3O and 35 percent of the mean aerodynamic chord. The original tests previously reported were for a center-of-gravity position of 24 percent of the mean aerodynamic chord.

  1. 飞机平台诱发环境温度的建模与仿真%A Research on Modeling and Simulation of Internal Environment Temperature Induced by Airplane Platform

    Institute of Scientific and Technical Information of China (English)

    李永林; 梁少峰; 曹克强

    2016-01-01

    The internal environment induced by airplane platform is an actual work environment of the air-borne equipment,and the induced environment temperature is a main influence factor on airborne equip-ment work.Aimed at the problems of modeling and simulation of internal environment temperature in-duced by airplane platform,the main influence factors are analyzed,and the modeling method of induced temperature is proposed based on similar heat transfer structures classification.The aircraft's similar heat transfer structures are classified as a wing cabin structure,a ring cabin structure,a big cabin structure,an open cabin structure,and a thermal protection structure.The general lumped parameter models of the 5 heat transfer structures are established.Taking Modelica language as a tool,the simulation models of the 5 heat transfer structures are also established.The similar temperature regional division is made taking a cer-tain type aircraft as example,and the 5 heat transfer structure simulation models are used.The internal environmental temperature simulation model of whole airplane platform is established.The simulation re-sult verifies the feasibility of the modeling and simulation method.The simulation results show that the air temperature in the fuselage cabin can be up to 70℃,the temperature in the engine nacelle can be up to 140℃ in short time,and between 90℃~110℃ in long time,the temperature in the engine thermal protec-tion structure can be up to 160℃.%飞机平台的诱发环境是机载设备的实际工作环境,诱发环境温度是影响机载设备工作的主要环境因素。针对飞机平台诱发环境温度的建模与仿真问题,分析了影响飞机平台诱发环境温度的主要因素,提出了以相似传热结构分类为基础的一种飞机平台诱发环境温度建模与仿真方法。将飞机平台相似传热结构分为翼形舱结构、环形舱结构、大舱室结构、开启舱结构和热防护结构,采用集中

  2. 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...

  3. 78 FR 23458 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2013-04-19

    ... Dassault Aviation Model Falcon 7X airplanes, certificated in any category, all serial numbers (S/Ns). (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Reason This AD was prompted by...) MSE30-005-3-8 and a stowage box P/N CSD 30-005-3-8 with S/N 1013 or higher, or serial number below 1013...

  4. High-Speed Wind-Tunnel Tests of a Model of the Lockheed YP-80A Airplane Including Correlation with Flight Tests and Tests of Dive-Recovery Flaps

    Science.gov (United States)

    Cleary, Joseph W.; Gray, Lyle J.

    1947-01-01

    This report contains the results of tests of a 1/3-scale model of the Lockheed YP-90A "Shooting Star" airplane and a comparison of drag, maximum lift coefficient, and elevator angle required for level flight as measured in the wind tunnel and in flight. Included in the report are the general aerodynamic characteristics of the model and of two types of dive-recovery flaps, one at several positions along the chord on the lower surface of the wing and the other on the lower surface of the fuselage. The results show good agreement between the flight and wind-tunnel measurements at all Mach numbers. The results indicate that the YP-80A is controllable in pitch by the elevators to a Mach number of at least 0.85. The fuselage dive-recovery flaps are effective for producing a climbing moment and increasing the drag at Mach numbers up to at least 0.8. The wing dive-recovery flaps are most effective for producing a climbing moment at 0.75 Mach number. At 0.85 Mach number, their effectiveness is approximately 50 percent of the maximum. The optimum position for the wing dive-recovery flaps to produce a climbing moment is at approximately 35 percent of the chord.

  5. 76 FR 78524 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-12-19

    ... airplanes only), as applicable, in accordance with the instructions of Airbus All Operators Telex (AOT) A330.... 552(a) and 1 CFR part 51: (1) Airbus All Operators Telex (AOT) A330-26A3052, dated April 19,...

  6. 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.

  7. 78 FR 22432 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-16

    ... provide appropriate operational procedures to prevent the airplane flight directors (FDs), autopilot (AP... computers (FCPCs) are necessary to inhibit autopilot re-engagement under unreliable airspeed conditions... this AD to prevent autopilot engagement under unreliable airspeed conditions, which could result...

  8. 14 CFR Appendix A to Part 60 - Qualification Performance Standards for Airplane Full Flight Simulators

    Science.gov (United States)

    2010-01-01

    ... name of the aircraft system software, aerodynamic model, or engine model change, the date of the change... (§ 60.20). 16. Interim Qualification of FFSs for New Airplane Types or Models (§ 60.21). 17... description of the qualification process, NSP policy, and an NSP “In-Works” section. Also linked from...

  9. 14 CFR Appendix B to Part 60 - Qualification Performance Standards for Airplane Flight Training Devices

    Science.gov (United States)

    2010-01-01

    ...) must consist of the name of the aircraft system software, aerodynamic model, or engine model change... Qualification of FTDs for New Airplane Types or Models (§ 60.21). 17. Modifications to FTDs (§ 60.23). 18..., a list of qualified flight simulation devices, ACs, a description of the qualification process,...

  10. Status of a digital integrated propulsion/flight control system for the YF-12 airplane

    Science.gov (United States)

    Reukauf, P. J.; Burcham, F. W., Jr.; Holzman, J. K.

    1975-01-01

    The NASA Flight Research Center is engaged in a program with the YF-12 airplane to study the control of interactions between the airplane and the propulsion system. The existing analog air data computer, autothrottle, autopilot, and inlet control system are to be converted to digital systems by using a general purpose airborne computer and interface unit. First, the existing control laws will be programmed in the digital computer and flight tested. Then new control laws are to be derived from a dynamic propulsion model and a total force and moment aerodynamic model to integrate the systems. These control laws are to be verified in a real time simulation and flight tested.

  11. 78 FR 41882 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2013-07-12

    ...). SUMMARY: We propose to supersede airworthiness directive (AD) 2002-23- 19, which applies to all Dassault... manufacturer revised the airplane maintenance manual (AMM) maintenance requirements and airworthiness... Rodriguez, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601...

  12. 77 FR 36224 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2012-06-18

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Empresa Brasileira... all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 airplanes, and Model EMB-145... information identified in this proposed AD, contact Empresa Brasileira de Aeronautica S.A....

  13. Research on the Model Test for the Ditching Floatation Characteristics of the Civil Airplanes%民用飞机水上迫降漂浮特性模型试验研究

    Institute of Scientific and Technical Information of China (English)

    王敏; 张越

    2012-01-01

    根据中国民用航空总局颁布的《中国民用航空规章第25部:运输类飞机适航标准》中的要求,需要对飞机水上迫降漂浮特性进行分析,以确保乘员能安全撤离飞机并乘上救生船。就水上迫降适航取证涉及到的条款要求,对民用飞机水上迫降漂浮特性模型试验的思路、试验程序进行了研究,然后对某型民用飞机进行了水上迫降漂浮特性模型试验,并对试验结果进行了分析,结果表明:本文所研究的思路和试验程序对于民用飞机水上迫降漂浮特性的适航取证研究具有重要的意义。%Abstract: According to the requirements of “Airworthiness Standards: Transport Category Airplanes” by CAAC, the assessment on ditching floatation characteristics have to be provided to ensure the occupants can leave the airplane and enter the life-rafts. The regulation requirements, the method and procedure of model test for ditching floatation characteristics is introduced in this paper, then ditching floatation characteristics model test for certain type of civil aircraft is performed. The analysis results show that it is of important significance in the research on the airworthiness certification of ditching floatation characteristics for transport category air- planes.

  14. 76 FR 81890 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-29

    ... the bear strap and inner chord strap on airplanes having a repair doubler, tripler, and quadrupler..., tripler, and quadrupler on airplanes having a repair doubler, tripler, and quadrupler installed..., doubler, and tripler on airplanes having a repair doubler and tripler installed. Supplemental HFEC, LFEC...

  15. 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....

  16. 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...

  17. 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...,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Manual Requirements § 125.75 Airplane flight manual. (a) Each certificate holder shall keep a current approved Airplane Flight Manual...

  18. Rotation-and-scale-invariant airplane detection in high-resolution satellite images based on deep-Hough-forests

    Science.gov (United States)

    Yu, Yongtao; Guan, Haiyan; Zai, Dawei; Ji, Zheng

    2016-02-01

    This paper proposes a rotation-and-scale-invariant method for detecting airplanes from high-resolution satellite images. To improve feature representation capability, a multi-layer feature generation model is created to produce high-order feature representations for local image patches through deep learning techniques. To effectively estimate airplane centroids, a Hough forest model is trained to learn mappings from high-order patch features to the probabilities of an airplane being present at specific locations. To handle airplanes with varying orientations, patch orientation is defined and integrated into the Hough forest to augment Hough voting. The scale invariance is achieved by using a set of scale factors embedded in the Hough forest. Quantitative evaluations on the images collected from Google Earth service show that the proposed method achieves a completeness, correctness, quality, and F1-measure of 0.968, 0.972, 0.942, and 0.970, respectively, in detecting airplanes with arbitrary orientations and sizes. Comparative studies also demonstrate that the proposed method outperforms the other three existing methods in accurately and completely detecting airplanes in high-resolution remotely sensed images.

  19. Estimation of bias errors in measured airplane responses using maximum likelihood method

    Science.gov (United States)

    Klein, Vladiaslav; Morgan, Dan R.

    1987-01-01

    A maximum likelihood method is used for estimation of unknown bias errors in measured airplane responses. The mathematical model of an airplane is represented by six-degrees-of-freedom kinematic equations. In these equations the input variables are replaced by their measured values which are assumed to be without random errors. The resulting algorithm is verified with a simulation and flight test data. The maximum likelihood estimates from in-flight measured data are compared with those obtained by using a nonlinear-fixed-interval-smoother and an extended Kalmar filter.

  20. 78 FR 70209 - Airworthiness Directives; XtremeAir GmbH Airplanes

    Science.gov (United States)

    2013-11-25

    ... This AD applies to XtremeAir GmbH Model XA42 airplanes, all serial numbers, that: (1) Are certificated...), all serial numbers up to and including 036, installed. (d) Subject Air Transport Association of America (ATA) Code 71: Power Plant. (e) Reason This AD was prompted by mandatory continuing airworthiness...

  1. SIMULATION OF FLUID-SOLID INTERACTION ON WATER DITCHING OF AN AIRPLANE BY ALE METHOD

    Institute of Scientific and Technical Information of China (English)

    HUA Cheng; FANG Chao; CHENG Jin

    2011-01-01

    Ditching is considered as one of the important aspects of safety performances of airplanes.It is related primarily with the fluid-solid interaction,whose studies mainly depend on experiments at the present time.Numerical and analytical methods for fluid-solid interaction by using 3-D full scale airplane's model will reduce the dependence on the expensive model tests.Numerical studies can be used to estimate the safety of ditching and provide a reference for the crashworthiness design.This article proposes a 3-D dynamical structural model after the real shape of an airplane and an Arbitrary Lagrange-Euler (ALE) fluid-field model,to simulate the fluid-solid interactions caused by low speed ditching.The simulation is based on interaction computational methods,within LS-DYNA nonlinear finite-element code.The results of pressure distributions and accelerating time histories of the airplane's subfloor are discussed in the context of the safety of ditching,and the simulation results and the analytical methods are verified.

  2. 76 FR 78526 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada...

    Science.gov (United States)

    2011-12-19

    ...-005-AD; Amendment 39-16890; AD 2011-06-06 R1] RIN 2120-AA64 Airworthiness Directives; Eclipse... directive (AD) that applies to all Eclipse Aerospace, Inc. Model EA500 airplanes equipped with Pratt...: 2011-06-06 R1 Eclipse Aerospace, Inc.: Amendment 39-16890; Docket No. FAA-2011-0199;...

  3. 77 FR 25644 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. Airplanes

    Science.gov (United States)

    2012-05-01

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Empresa Brasileira...) that apply to all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ 190 airplanes... information identified in this proposed AD, contact Empresa Brasileira de Aeronautica S.A....

  4. 77 FR 16155 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2012-03-20

    ...-035-AD; Amendment 39-16980; AD 2012-05-08] RIN 2120-AA64 Airworthiness Directives; Empresa Brasileira... directive (AD) for all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 airplanes. This AD... amends Sec. 39.13 by adding the following new AD: 2012-05-08 Empresa Brasileira de Aeronautica...

  5. 76 FR 72855 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2011-11-28

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Empresa Brasileira... all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190 airplanes. This proposed AD results... Friday, except Federal holidays. For service information identified in this proposed AD, contact...

  6. A new 2D climate model with chemistry and self consistent eddy-parameterization. The impact of airplane NO{sub x} on the chemistry of the atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Gepraegs, R.; Schmitz, G.; Peters, D. [Institut fuer Atmosphaerenphysik, Kuehlungsborn (Germany)

    1997-12-31

    A 2D version of the ECHAM T21 climate model has been developed. The new model includes an efficient spectral transport scheme with implicit diffusion. Furthermore, photodissociation and chemistry of the NCAR 2D model have been incorporated. A self consistent parametrization scheme is used for eddy heat- and momentum flux in the troposphere. It is based on the heat flux parametrization of Branscome and mixing-length formulation for quasi-geostrophic vorticity. Above 150 hPa the mixing-coefficient K{sub yy} is prescribed. Some of the model results are discussed, concerning especially the impact of aircraft NO{sub x} emission on the model chemistry. (author) 6 refs.

  7. Requirements for satisfactory flying qualities of airplanes

    Science.gov (United States)

    Gilruth, R R

    1943-01-01

    Report discusses the results of an analysis of available data to determine what measured characteristics are significant in defining satisfactory flying qualities, what characteristics are reasonable to require of an airplane, and what influence the various design features have on the observed flying qualities.

  8. 76 FR 79560 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-12-22

    ... off, a transient loss of elevator control associated with a temporary incorrect flight control law... airplane flight manual. We are proposing this AD to prevent movement of the elevators to zero position, which could result in inducing a pitch down movement instead of a pitch up movement needed for lift off...

  9. 76 FR 67341 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-11-01

    ... availability of this material at the FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado...; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas...

  10. 76 FR 65419 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-10-21

    .... ] FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate...-mail: albert.mercado@faa.go v. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace...

  11. 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... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace...

  12. 77 FR 36125 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2012-06-18

    ... 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.gov... 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  13. 76 FR 50405 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-15

    ...: 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.gov... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace...

  14. Safety and design in airplane construction

    Science.gov (United States)

    Teichmann, Alfred

    1934-01-01

    The author gives a survey of the principles of stress analysis and design of airplane structures, and discusses the fundamental strength specifications and their effect on the stress analysis as compared with the safety factors used in other branches of engineering.

  15. 78 FR 78294 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-26

    ... airplanes. This proposed AD was prompted by the failure of the generator control unit-constant speed motor... with an emergency electrical configuration loss of the main electrical system or total engine flame out... INFORMATION CONTACT: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport...

  16. 77 FR 14679 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-13

    ... service information was approved for IBR on IBR June 24, 2002 (67 FR 35425, May 20, 2002). (i) Airbus... asymmetry during landing, with controllability and deceleration consequences. We are issuing this AD to prevent thrust asymmetry conditions which could result in loss of control of the airplane during...

  17. 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 comm...

  18. 77 FR 24833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-26

    ... accordance with the ] instructions in Airbus All Operators Telex A310-29A2101, Revision 01, dated April 12... Telex A310-29A2102, dated April 12, 2011 (for airplanes equipped with PARKER (formerly ABEX) hydraulic... with the instructions in Airbus All Operators Telex A310- 29A2101, Revision 01, dated April 12,...

  19. 78 FR 39190 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-01

    ..., of Chapter 57, Wings, of the Airbus A318/A319/A320/A321 Aircraft Maintenance Manual (AMM), Revision.../A320/A321 Aircraft Maintenance Manual (AMM), Revision 50, dated November 1, 2012. (2) Task 57-26-13-400..., A319, A320, and A321 series airplanes. This proposed AD was prompted by a determination that...

  20. 78 FR 21230 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-10

    .../A320 Aircraft Maintenance Manual. Request To Correct Typographical Error Virgin America noted an error.../A320 Aircraft Maintenance Manual. Note 2 to paragraph (i) of this AD: Guidance on the fuel pump... A320 series airplanes. This AD was prompted by fuel system reviews conducted by the manufacturer,...

  1. 78 FR 9341 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-08

    ...). Chapter 32 of the Airbus A318/ A319/A320/A321 Aircraft Maintenance Manual (AMM) is one approved method for... A318, A319, A320, and A321 series airplanes. The existing AD currently requires repetitive inspections...''), to correct an unsafe condition for the specified products. The MCAI states: In 2005, an...

  2. 77 FR 15636 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-16

    ..., A319, and A320 series airplanes. This proposed AD was prompted by reports of unsuccessful slide... manual mode. As a result, the aspirator will not ingest sufficient ambient air for slide inflation. This... correct the unsafe condition identified in the MCAI. Airbus Service Bulletin A320-28-1118, Revision...

  3. 77 FR 58785 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ...-601, B4-603, B4-620, B4- 605R, and B4-622R airplanes; certificated in any category; all serial numbers. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Reason This AD was...

  4. 78 FR 64162 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-28

    ... -232 airplanes; certificated in any category; all manufacturer serial numbers. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Reason This AD was prompted by a determination... paragraph (g)(1)(i) of this AD and a serial number (S/N) listed in paragraph (g)(1)(ii) of this AD, in...

  5. 77 FR 67256 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-09

    ... Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind..., activating the SRIW device, upgrading the flight control computer to introduce the SRIW logic, and upgrading the flight warning computer. We have revised paragraph (g) in this final rule to allow accomplishment...

  6. 77 FR 48427 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-14

    ... procurement will allow the work to be performed during a heavy maintenance check for all FedEx airplanes. We... product. Where the service information lists required parts costs that are covered under warranty, we have... between the national government and the States, or on the distribution of power and responsibilities...

  7. 78 FR 78705 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-27

    ... compliance time for the corrective actions specified in paragraphs (m), (o), and (p) of the NPRM (78 FR 28152.... The commenter has not provided sufficient substantiation for revising the corrective action compliance... result in reduced control of the airplane. (f) Compliance You are responsible for having the...

  8. 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.

  9. 77 FR 26154 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-03

    ... time. This AD requires installing three secondary retention plates for the gimbal bearings on the THSA... CONTACT: Dan Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate... been identified by analysis. Primary load path failure can be caused by bearing migration from...

  10. 78 FR 65173 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-31

    ... bearing installation of the retraction jack anchorage fitting in the main landing gear (MLG) were incorrectly manufactured. This AD requires an inspection of the left-hand (LH) and right-hand (RH) bearing... CONTACT: Sanjay Ralhan, Aerospace Engineer, International Branch, ANM-116, Transport Airplane...

  11. A study of airplane engine tests

    Science.gov (United States)

    Gage, Victor R

    1920-01-01

    This report is a study of the results obtained from a large number of test of an Hispano-Suiza airplane engine in the altitude laboratory of the Bureau of Standards. It was originally undertaken to determine the heat distribution in such an engine, but many other factors are also considered as bearing on this matter.

  12. 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....

  13. Aerodynamic Loads at Mach Numbers from 0.70 to 2.22 on an Airplane Model Having a Wing and Canard of Triangular Plan Form and Either Single or Twin Vertical Tails Supplement I-Tabulated Data for the Model with Single Vertical Tails. Supplement 1; Tabulated Data for the Model with Single Vertical Tail

    Science.gov (United States)

    Peterson, Victor L.; Menees, Gene P.

    1961-01-01

    Tabulated results of a wind-tunnel investigation of the aerodynamic loads on a canard airplane model with a single vertical tail are presented for Mach numbers from 0.70 to 2.22. The Reynolds number for the measurements was 2.9 x 10(exp 6) based on the wing mean aerodynamic chord. The results include local static pressure coefficients measured on the wing, body, and vertical tail for angles of attack from -4 deg to + 16 deg, angles of sideslip of 0 deg and 5.3 deg, vertical-tail settings of 0 deg and 5 deg, and nominal canard deflections of 0 deg and 10 deg. Also included are section force and moment coefficients obtained from integrations of the local pressures and model-component force and moment coefficients obtained from integrations of the section coefficients. Geometric details of the model and the locations of the pressure orifices are shown. An index to the data contained herein is presented and definitions of nomenclature are given.

  14. Velocity estimation of an airplane through a single satellite image

    Institute of Scientific and Technical Information of China (English)

    Zhuxin Zhao; Gongjian Wen; Bingwei Hui; Deren Li

    2012-01-01

    The motion information of a moving target can be recorded in a single image by a push-broom satellite. A push-broom satellite image is composed of many image lines sensed at different time instants. A method to estimate the velocity of a flying airplane from a single image based on the imagery model of the linear push-broom sensor is proposed. Some key points on the high-resolution image of the plane are chosen to determine the velocity (speed and direction). The performance of the method is tested and verified by experiments using a WorldView-1 image.%The motion information of a moving target can be recorded in a single image by a push-broom satellite.A push-broom satellite image is composed of many image lines sensed at different time instants.A method to estimate the velocity of a flying airplane from a single image based on the imagery model of the linear push-broom sensor is proposed.Some key points on the high-resolution image of the plane are chosen to determine the velocity (speed and direction).The performance of the method is tested and verified by experiments using a WorldView-1 image.

  15. Analysis of airplane boarding via space-time geometry and random matrix theory

    CERN Document Server

    Bachmat, E; Skiena, S S; Stolyarov, N; Berend, D; Bachmat, Eitan; Sapir, Luba; Skiena, Steven; Stolyarov, Natan; berend, Daniel

    2005-01-01

    We show that airplane boarding can be asymptotically modeled by 2-dimensional Lorentzian geometry. Boarding time is given by the maximal proper time among curves in the model. Discrepancies between the model and simulation results are closely related to random matrix theory. We then show how such models can be used to explain why some commonly practiced airline boarding policies are ineffective and even detrimental.

  16. 76 FR 36395 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-24, PA-24-250, and PA-24-260 Airplanes

    Science.gov (United States)

    2011-06-22

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc... proposed AD, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, Florida 32960; telephone: (772... September 15, 2004. This SAIB alerted owners and operators of Piper Aircraft, Inc. (Piper) Models PA-23,...

  17. Slot Tests on a High Lift Configuration Model of an Airplane%民用飞机增升装置缝道参数气动影响的试验研究

    Institute of Scientific and Technical Information of China (English)

    叶军科; 陈迎春; 李亚林; 宋笔锋

    2012-01-01

    Slot tests on a high lift configuration model of an airplane are completed in the 4m×3m low speed wind tunnel.Different overlap/gap settings of slat and trailing edge flap are evaluated on a semi-span wing/body configuration.The tests show the effects of slot and deflector angle of slat and trailing edge flap on aerodynamic performance and the optimum take-off and landing configurations are acquired.With decreasing the deflector angle of trailing edge flap,three results occur for the take-off configuration,lift-to-drag ratio increases when lift coefficient is fixed or attack angle is large,and it decreases at a small attack angle.For the landing configuration,with the position of slat being varied,the effect of deflector angle of slat on the trends of the maximum lift coefficient and stall angle convert.When the deflector angle increases continually,lift coefficient and the maximum CL declines,while the stall angle rise.%针对民用飞机增升装置初步设计阶段的起飞和着陆构型进行了缝道试验研究,比较分析了前缘缝翼、后缘襟翼偏度和位置参数对增升装置气动性能的影响,得到了前后缘缝道和偏度最佳组合参数.试验研究发现,该模型在起飞状态下,后缘偏度越小,极曲线特性越佳,且在小迎角范围内,升阻比随后缘偏度减小而降低,在迎角较大时则相反变化.对于着陆构型,前缘偏度对CLmax和失速迎角影响的趋势会随着前缘位置变化而发生改变;当后缘偏度增大时,着陆构型的升力系数和CLmax会减小,失速迎角增大.

  18. Determination of the Stability and Control Characteristics of a Straight-Wing, Tailless Fighter-Airplane Model in the Langley Free-Flight Tunenl

    Science.gov (United States)

    1946-02-01

    FLIGHT TUNNEL Jr. end HermanO . Ankenbruck hngley MemorialAeronauticalLaboratory -G. ,.–. .— .. . . . . LangleyField, Va...complete model, a— .—— .- K ~“ “N&CA ACR No. L5K05 The force-test data of figures ~ and 15 show a noticeable increase in directional stabtlity with appli...Effcc+ of pwer on /ong/fud/m/ chamc+erlsfjc.sof s+u~gh{- wng, +a/1/essfighfer nzxtd k -kd m LQ@ey kee-#/9A/ “+umk+. Cen7%r-0+ gravi! 1 loc&/on, 0.048

  19. Perturbed Motion of Airplane and Safe Store Separation

    Directory of Open Access Journals (Sweden)

    S. C. Raisinghani

    1984-07-01

    Full Text Available A method is presented to predict the perturbed motion of an airplane following stores jettisoning. The mass, moment of inertia, forces, and moments acting on the airplane are suitable split into contributions from the stores and the rest of the airplane parts. The seperation of stores is assumed to result in a step change of mass, moment of intertai, forces, and moments contributed by stores. The resulting set of perturbed state equations of motion are solved for two illustrative airplane stroes combination. A criterion is evolved to qualitatively indicate locations for safe store separation. It is suggested that the present method be used to predict airplane perturbed motion following stores separation for a given airplane store combination and results be used in conjunction with store trajectory analysis for finally declaring a store location as safe unsafe.

  20. AN AIRPLANE WITH UNCONVENTIONALLY PLACED PROPELLER POWER UNIT

    Directory of Open Access Journals (Sweden)

    Jan Červinka

    2017-02-01

    Full Text Available The significance of the influence of operating propellers on the aircraft aerodynamic characteristics is well-known. Wind tunnel testing of an airplane model with operating propellers is a complex task regarding the required similarity of the full-scale and the model case. Matching sufficient similarity in axial and rotational velocities in the propeller slipstream is the primordial condition for the global aerodynamic similarity of the windtunnel testing. An example of the model power units with related devices is presented. Examples of the wind tunnel testing results illustrate the extent of the propeller influence on aerodynamic characteristics of an aircraft of unconventional configuration with power units positioned at the fuselage afterbody.

  1. Definition of 1992 Technology Aircraft Noise Levels and the Methodology for Assessing Airplane Noise Impact of Component Noise Reduction Concepts

    Science.gov (United States)

    Kumasaka, Henry A.; Martinez, Michael M.; Weir, Donald S.

    1996-01-01

    This report describes the methodology for assessing the impact of component noise reduction on total airplane system noise. The methodology is intended to be applied to the results of individual study elements of the NASA-Advanced Subsonic Technology (AST) Noise Reduction Program, which will address the development of noise reduction concepts for specific components. Program progress will be assessed in terms of noise reduction achieved, relative to baseline levels representative of 1992 technology airplane/engine design and performance. In this report, the 1992 technology reference levels are defined for assessment models based on four airplane sizes - an average business jet and three commercial transports: a small twin, a medium sized twin, and a large quad. Study results indicate that component changes defined as program final goals for nacelle treatment and engine/airframe source noise reduction would achieve from 6-7 EPNdB reduction of total airplane noise at FAR 36 Stage 3 noise certification conditions for all of the airplane noise assessment models.

  2. Aerodynamic Loads at Mach Numbers from 0.70 to 2.22 on an Airplane Model Having a Wing and Canard of Triangular Plan Form and Either Single or Twin Vertical Tails. Supplement 2; Tabulated Data for the Model with Twin Vertical Tails

    Science.gov (United States)

    Peterson, Victor L.; Menees, Gene P.

    1961-01-01

    Tabulated results of a wind-tunnel investigation of the aerodynamic loads on a canard airplane model with twin vertical tails are presented for Mach numbers from 0.70 to 2.22. The Reynolds number for the measurements was 2.9 x 10(exp 6) based on the wing mean aerodynamic chord. The results include local static-pressure coefficients measured on the wing, body, and one of the vertical tails for angles of attack from -4 degrees to 16 degree angles of sideslip of 0 degrees and 5.3 degrees, and nominal canard deflections of O degrees and 10 degrees. Also included are section force and moment coefficients obtained from integrations of the local pressures and model-component force and moment coefficients obtained from integrations of the section coefficients. Geometric details of the model are shown and the locations of the pressure orifices are shown. An index to the data contained herein is presented and definitions of nomenclature are given. Detailed descriptions of the model and experiments and a brief discussion of some of the results are given. Tabulated results of measurements of the aerodynamic loads on the same canard model but having a single vertical tail instead of twin vertical tails are presented.

  3. Experimental test of airplane boarding methods

    CERN Document Server

    Steffen, Jason H

    2011-01-01

    We report the results of an experimental comparison of different airplane boarding methods. This test was conducted in a mock 757 fuselage, located on a Southern California soundstage, with 12 rows of six seats and a single aisle. Five methods were tested using 72 passengers of various ages. We found a significant reduction in the boarding times of optimized methods over traditional methods. These improved methods, if properly implemented, could result in a significant savings to airline companies.

  4. Autonomous Deicing System For Airplane Wing

    Science.gov (United States)

    Hickman, G. A.; Gerardi, J. J.

    1993-01-01

    Prototype autonomous deicing system for airplane includes network of electronic and electromechanical modules at various locations in wings and connected to central data-processing unit. Small, integrated solid-state device, using long coils installed under leading edge, exciting small vibrations to detect ice and larger vibrations to knock ice off. In extension of concept, outputs of vibration sensors and other sensors used to detect rivet-line fractures, fatigue cracks, and other potentially dangerous defects.

  5. Flatulence on airplanes: just let it go.

    Science.gov (United States)

    Pommergaard, Hans C; Burcharth, Jakob; Fischer, Anders; Thomas, William E G; Rosenberg, Jacob

    2013-02-15

    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 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.

  6. Exploratory piloted simulator study of the effects of winglets on handling qualities of a representative agricultural airplane

    Science.gov (United States)

    Ogburn, M. E.; Brown, P. W.

    1980-01-01

    The effects on handling qualities of adding winglets to a representative agricultural aircraft configuration during swath-run maneuvering were evaluated. Aerodynamic data used in the simulation were based on low-speed wind tunnel tests of a full scale airplane and a subscale model. The Cooper-Harper handling qualities rating scale, supplementary pilot comments, and pilot vehicle performance data were used to describe the handling qualities of the airplane with the different wing-tip configurations. Results showed that the lateral-directional handling qualities of the airplane were greatly affected by the application of winglets and winglet cant angle. The airplane with winglets canted out 20 deg exhibited severely degraded lateral directional handling qualities in comparison to the basic airplane. When the winglets were canted inward 10 deg, the flying qualities of the configuration were markedly improved over those of the winglet-canted-out configuration or the basic configuration without winglets, indicating that proper tailoring of the winglet design may afford a potential benefit in the area of handling qualities.

  7. 77 FR 56991 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-09-17

    ...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; phone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room...

  8. 78 FR 54561 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-09-05

    ...-17457; AD 2013-10-04] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc. Airplanes AGENCY... an airworthiness directive (AD) that published in the Federal Register. That AD applies to all Piper... airplane exhaust system, and repair or replacement of parts as necessary for all Piper Aircraft,...

  9. 77 FR 32439 - Airworthiness Directives; Bombardier Inc. Airplanes

    Science.gov (United States)

    2012-06-01

    ... CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers...%2025.1529-1A/$FILE/AC%2025.1529- 1A.pdf). (d) Subject Air Transport Association (ATA) of America Code..., Amendment 39-14359 (70 FR 69073, November 14, 2005). For airplanes having serial numbers 7003 through 8025...

  10. 78 FR 58970 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-25

    ..., Aerospace Engineer, Cabin Safety and Environmental Controls Branch, ANM-150S, FAA, Seattle Aircraft... airplane attitude, altitude, or airspeed, and consequently reduce the ability of the flightcrew to maintain control of the airplane. DATES: We must receive comments on this proposed AD by November 12, 2013...

  11. 77 FR 72250 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2012-12-05

    ... between the fuel return line assembly and the airplane structure; and, if any damage is found, replace the... personal information you provide. We will also post a report summarizing each substantive verbal contact we... and the airplane structure; and adjustment as necessary. The ADs resulted from reports of chafed...

  12. 78 FR 46301 - Airworthiness Directives; BAE Systems (Operations) Limited Airplanes

    Science.gov (United States)

    2013-07-31

    ..., which could result in the engine pylon separating from the wing, with consequent damage to the airplane... in the engine pylon separating from the wing, with consequent damage to the airplane and reduced... of a cracked pick- up bracket of the forward outboard pylon of the number 1 engine due to...

  13. 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.

  14. 77 FR 37795 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2012-06-25

    ... combination with other system failures, could lead to loss of controllability of the airplane. DATES: This AD... failure mode of TVS diodes used on PDCU or GCU cards in the PPDB, which, in combination with other system... combination with other system failures, could lead to loss of controllability of the airplane. (f)...

  15. Effect of pitch angle on initial stage of a transport airplane ditching

    Institute of Scientific and Technical Information of China (English)

    Guo Baodong; Liu Peiqing; Qu Qiulin; Wang Jiawen

    2013-01-01

    Airworthiness regulations require that the transport airplane should be proved to ensure the survivability of the ditching for the passengers.The planned ditching of a transport airplane on the calm water is numerically simulated.The effect of pitch angle on the impact characteristics is especially investigated by a subscaled model.The Reynolds-averaged Navier-Stokes (RANS) equations of unsteady compressible flow are solved and the realizable κ-ε equations are employed to model the turbulence.The transformation of the air-water interface is tracked by volume of fluid (VOF) model.The motion of the rigid body is modeled by dynamic mesh method.The initial ditching stage of the transport airplane is analyzed in detail.The numerical results show that as the pitching angle increases,the maximal normal force decreases and the pitching motion becomes much gentler.The aft fuselage would be sucked down by the water and lead to pitching up,whereas the low horizontal tail prevents this trend.Consequently,the transport aircraft with low horizontal tail should ditch on the water at an angle between 10° and 12° as a recommendation.

  16. Networking Effect Analysis of Ship-Airplane Cooperating Air Defense System%舰机协同防空体系网络化效应分析

    Institute of Scientific and Technical Information of China (English)

    陈国生; 刘钢; 贾子英

    2011-01-01

    针对舰机海上协同防空作战体系网络化效应难以度量的问题,提出舰机协同组网概念,建立舰机协同组网网络环模型.将舰机协同防空区域进行划分,通过核心子网络在不同防空区域的转移以及邻接矩阵Perron-Frobenius特征值(PFE)的计算,分析了舰机协同防空体系的网络化效应.该分析方法简单,将其应用在舰机协同防空体系网络化效应分析是有效的.%To solve the question of measuring networking effect for ship-airplane cooperating air defense system, the definition of ship-airplane cooperating networking is proposed, and the networking loop model of ship-airplane cooperating networking is established. The ship-airplane cooperating air defense area is divided, through the core sub-networking shifting in different air defense area and the computation of adjoin matrix Perron-Frobeniu eigenvalue(PFE), the networking effect of ship-airplane cooperating air defense system is analyzed. This analysis method is simple and effective on analyzing networking effect of ship-airplane cooperating air defense system.

  17. Future Propulsion Opportunities for Commuter Airplanes

    Science.gov (United States)

    Strack, W. C.

    1982-01-01

    Commuter airplane propulsion opportunities are summarized. Consideration is given to advanced technology conventional turboprop engines, advanced propellers, and several unconventional alternatives: regenerative turboprops, rotaries, and diesels. Advanced versions of conventional turboprops (including propellers) offer 15-20 percent savings in fuel and 10-15 percent in DOC compared to the new crop of 1500-2000 SHP engines currently in development. Unconventional engines could boost the fuel savings to 30-40 percent. The conclusion is that several important opportunities exist and, therefore, powerplant technology need not plateau.

  18. 76 FR 59240 - Airworthiness Directives; Empresa Brasileira de Aeronáutica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2011-09-26

    ... 2011-CE-023-AD; Amendment 39-16810; AD 2011-20-01] RIN 2120-AA64 Airworthiness Directives; Empresa... (AD) for Empresa Brasileira de Aeron utica S.A. (EMBRAER) Model EMB-505 airplanes. This AD results... the following new AD: 2011-20-01 Empresa Brasileira de Aeron utica S.A. (EMBRAER): Amendment...

  19. 77 FR 39159 - Airworthiness Directives; Empresa Brasileria de Aeronáutica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2012-07-02

    ...-011-AD; Amendment 39-17106; AD 2012-13-04] RIN 2120-AA64 Airworthiness Directives; Empresa Brasileria... Empresa Brasileria de Aeron utica S.A. (EMBRAER) Model EMB-505 airplanes. This AD results from mandatory..., contact Empresa Brasileira de Aeronautica S.A. (EMBRAER), Phenom Maintenance Support, Av. Brigadeiro...

  20. 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.

  1. 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.

  2. StorageTek RedWood SD-3 tape drive

    CERN Multimedia

    1995-01-01

    A helical scan recording drive, with a high-speed rotating head sweeping across the tape every few micrometers. Based on a professional video recording system, modified to be suitable for digital data recording. These are commonly used with large computer systems, typically in conjunction with a robotic tape library.

  3. Decision Making in the Airplane

    Science.gov (United States)

    Orasanu, Judith; Shafto, Michael G. (Technical Monitor)

    1995-01-01

    The Importance of decision-making to safety in complex, dynamic environments like mission control centers, aviation, and offshore installations has been well established. NASA-ARC has a program of research dedicated to fostering safe and effective decision-making in the manned spaceflight environment. Because access to spaceflight is limited, environments with similar characteristics, including aviation and nuclear power plants, serve as analogs from which space-relevant data can be gathered and theories developed. Analyses of aviation accidents cite crew judgement and decision making as causes or contributing factors in over half of all accidents. Yet laboratory research on decision making has not proven especially helpful In improving the quality of decisions in these kinds of environments. One reason is that the traditional, analytic decision models are inappropriate to multi-dimensional, high-risk environments, and do not accurately describe what expert human decision makers do when they make decisions that have consequences. A new model of dynamic, naturalistic decision making is offered that may prove useful for improving decision making in complex, isolated, confined and high-risk environments. Based on analyses of crew performance in full-mission simulators and accident reports, features that define effective decision strategies in abnormal or emergency situations have been identified. These include accurate situation assessment (including time and risk assessment), appreciation of the complexity of the problem, sensitivity to constraints on the decision, timeliness of the response, and use of adequate information. More effective crews also manage their workload to provide themselves with time and resources to make good decisions. In brief, good decisions are appropriate to the demands of the situation. Effective crew decision making and overall performance are mediated by crew communication. Communication contributes to performance because it assures that

  4. 77 FR 12506 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-03-01

    ... Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The... Airbus airplanes with similar FQIS vulnerabilities that are not affected by the FTFR rule. FAA's...

  5. 78 FR 63907 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2013-10-25

    ... airplanes, serial numbers (S/N) 001/US through S/N 9999/US, certificated in any category. (d) Subject Air Transport Association of America (ATA) Code 32: Landing Gear. (e) Reason This AD was prompted by mandatory...

  6. 78 FR 75291 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-12-11

    ... -315 airplanes; certificated in any category; serial numbers 003 through 672 inclusive with a beta... (ATA) of America Code 31, Instruments; Code 76, Engine Controls. (e) Reason This AD was prompted by a...

  7. 77 FR 67254 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-11-09

    ... category, serial numbers 4001 and subsequent. (d) Subject Air Transport Association (ATA) of America Code... airplanes having serial numbers 4001 through 4354 inclusive, and 4356 through 4366 inclusive: Within 6,000...

  8. 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.

  9. Classification and Prediction of RF Coupling inside A-320 and A-319 Airplanes using Feed Forward Neural Networks

    Science.gov (United States)

    Jafri, Madiha; Ely, Jay; Vahala, Linda

    2006-01-01

    Neural Network Modeling is introduced in this paper to classify and predict Interference Path Loss measurements on Airbus 319 and 320 airplanes. Interference patterns inside the aircraft are classified and predicted based on the locations of the doors, windows, aircraft structures and the communication/navigation system-of-concern. Modeled results are compared with measured data and a plan is proposed to enhance the modeling for better prediction of electromagnetic coupling problems inside aircraft.

  10. Effects of airplane emissions on the composition of the atmosphere: Investigations using a mesoscale chemical transport model; Der Einfluss von Flugzeugabgasen auf die Zusammensetzung der Atmosphaere: Untersuchungen mit einem mesoskaligen Chemie-Transport-Modell

    Energy Technology Data Exchange (ETDEWEB)

    Lippert, E.

    1996-12-31

    In the present work the impact of aircraft emissions on the atmospheric composition is studied using a mesoscale chemistry transport model. To simulate the impact of aircraft exhausts several modifications on the EURAD model system have been performed. The upper boundary of the model has been extended from 100 hPa up to 10 hPa. The vertical resolution of the model has been refined especially in tropopause altitudes extending the number of model layers from 15 to 29. Additionally the initialization and the treatment of the boundary conditions has been improved by coupling the trace gas concentration fields with the individual meteorological situation. To guarantee an adequate representation of the atmospheric chemistry the chemical mechanism CHEST has been developed and implemented into the chemistry transport model. CHEST treats the most important chemical processes of the troposphere and lower stratosphere. In the frame of the present work sensitivity studies with a box model and with the threedimensional chemistry transport model have been performed to investigate the impact of aircraft emissions upon the atmosphere. (KW) [Deutsch] In der vorliegenden Arbeit werden die Auswirkungen der Flugzeugemissionen auf die Zusammensetzung der Atmosphaere mit Hilfe eines mesoskaligen Chemie-Transport-Modells untersucht. Zur Simulation der Ausbreitung der Flugzeugabgase wurden am EURAD-Modell-System umfangreiche Veraenderungen vorgenommen. Der obere Modellrand des Chemie-Transport-Modells ist von 100 hPa auf 10 hPa erhoeht worden. Die vertikale Aufloesung des Modells wurde insbesondere im Tropopausenbereich durch eine Erhoehung der Gesamtzahl der Modellschichten von 15 auf 29 wesentlich verfeinert. Ausserdem ist die Initialisierung der Spurenstoffverteilung im Modell an die Dynamik gekoppelt worden. Dem Chemie-Transport-Modell stehen damit an die jeweilige meteorologische Situation angepasste Konzentrationsfelder zur Initialisierung und zur Behandlung der Fluesse durch den

  11. 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.

  12. 76 FR 44458 - Airworthiness Directives; The Boeing Company Model 747 Airplanes and Model 767 Airplanes Equipped...

    Science.gov (United States)

    2011-07-26

    ... that, in Asia, where most of the engine flameout events occurred, the total air temperature (TAT) at 22... in southern Asia is estimated to be 32 C. JAL further explained that static air temperature (SAT... determined that air safety and the public interest require adopting the AD with the changes described...

  13. Surface pressure data for a supersonic-cruise airplane configuration at Mach numbers of 2.30, 2.96, 3.30

    Science.gov (United States)

    Shrout, B. L.; Corlett, W. A.; Collins, I. K.

    1979-01-01

    The tabulated results of surface pressure tests conducted on the wing and fuselage of an airplane model in the Langley Unitary Plan wind tunnel are presented without analysis. The model tested was that of a supersonic-cruise airplane with a highly swept arrow-wing planform, two engine nacelles mounted beneath the wing, and outboard vertical tails. Data were obtained at Mach numbers of 2.30, 2.96, and 3.30 for angles of attack from -4 deg to 12 deg. The Reynolds number for these tests was 6,560,000 per meter.

  14. A knowledge-based design framework for airplane conceptual and preliminary design

    Science.gov (United States)

    Anemaat, Wilhelmus A. J.

    The goal of work described herein is to develop the second generation of Advanced Aircraft Analysis (AAA) into an object-oriented structure which can be used in different environments. One such environment is the third generation of AAA with its own user interface, the other environment with the same AAA methods (i.e. the knowledge) is the AAA-AML program. AAA-AML automates the initial airplane design process using current AAA methods in combination with AMRaven methodologies for dependency tracking and knowledge management, using the TechnoSoft Adaptive Modeling Language (AML). This will lead to the following benefits: (1) Reduced design time: computer aided design methods can reduce design and development time and replace tedious hand calculations. (2) Better product through improved design: more alternative designs can be evaluated in the same time span, which can lead to improved quality. (3) Reduced design cost: due to less training and less calculation errors substantial savings in design time and related cost can be obtained. (4) Improved Efficiency: the design engineer can avoid technically correct but irrelevant calculations on incomplete or out of sync information, particularly if the process enables robust geometry earlier. Although numerous advancements in knowledge based design have been developed for detailed design, currently no such integrated knowledge based conceptual and preliminary airplane design system exists. The third generation AAA methods are tested over a ten year period on many different airplane designs. Using AAA methods will demonstrate significant time savings. The AAA-AML system will be exercised and tested using 27 existing airplanes ranging from single engine propeller, business jets, airliners, UAV's to fighters. Data for the varied sizing methods will be compared with AAA results, to validate these methods. One new design, a Light Sport Aircraft (LSA), will be developed as an exercise to use the tool for designing a new airplane

  15. Application of Feedback Linearization Method in Airplane Automatic Landing Control System

    Institute of Scientific and Technical Information of China (English)

    Wang Xiaoyan; Feng Jiang; Feng Xiujuan; Wu Junqin

    2004-01-01

    Summarizes the I/O feedback linearization about MIMO system, and applies it to nonlinear control equation of airplane. And also designs the tracing control laws for airplane longitudinal automatic landing control system.

  16. 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

  17. Electrical emissions of airplanes flying in electrified clouds and their effect on airplane measurements of cloud electric fields

    Science.gov (United States)

    Jones, James J.

    1991-01-01

    The signature of the cloud electric field components deduced from measurements made with electric field meters carried on airplane penetrating electrified clouds is often complex, especially when the airplane experiences strong electrical charging. However, simple electric field variations were obtained for penetrations involving severe charging of the airplane on flights over KSC on 19 Aug. 1989. During these episodes of severe electrical charging, the airplane typically became negatively charged as it approached a region of negative cloud charge and then became positively charged as it receded from the cloud charge. The charge acquired by the airplane within the cloud was so large that the electric fields at the faces of the mills mounted on the fuselage were as large as for an ambient electric field of 60 to 80 kV/m. However, the deduced electric field components perpendicular to the direction of flight, to which these mills respond, were only about 5 to 10 kV/m. The variation of the deduced ambient field component in the direction of flight was antisymmetric about the charge region for these penetrations. Analysis of these results suggest that intense plumes of electric charge were emitted from the airplane and that the electric field associated with these plumes overcame the electric field due to the cloud charge at the tail-mounted field mill. As a consequence, the deduced component of the ambient electric field in the direction of flight was severely distorted. These findings emphasize the need for careful evaluation of airplane electric field measurements and of the need for further work on techniques for improving the measurements.

  18. 14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.

    Science.gov (United States)

    2010-01-01

    ... limitations: Destination airports. 121.195 Section 121.195 Aeronautics and Space FEDERAL AVIATION...: Destination airports. (a) No person operating a turbine engine powered airplane may take off that airplane at... alternate airport) the weight of the airplane on arrival would exceed the landing weight set forth in...

  19. 14 CFR 135.395 - Large nontransport category airplanes: Landing limitations: Alternate airports.

    Science.gov (United States)

    2010-01-01

    ...: Landing limitations: Alternate airports. 135.395 Section 135.395 Aeronautics and Space FEDERAL AVIATION... category airplanes: Landing limitations: Alternate airports. No person may select an airport as an alternate airport for a large nontransport category airplane unless that airplane (at the weight...

  20. LAUNCH : an innovation concept for loading and unloading narrow-body airplanes

    NARCIS (Netherlands)

    Grinten, M.P. van der; Bronkhorst, R.E.; Delleman, N.J.

    2000-01-01

    In wide-body airplanes containers are used for handling luggage in and out the airplane. In narrow-body airplanes loading and unloading still is done manually causing heavy loads in awkward postures due to the limited height in the belly. Incidence rates of musculoskeletal health problems are high i

  1. 14 CFR 121.412 - Qualifications: Flight instructors (airplane) and flight instructors (simulator).

    Science.gov (United States)

    2010-01-01

    ... (airplane) and flight instructors (simulator). 121.412 Section 121.412 Aeronautics and Space FEDERAL... (simulator). (a) For the purposes of this section and § 121.414: (1) A flight instructor (airplane) is a person who is qualified to instruct in an airplane, in a flight simulator, or in a flight training device...

  2. LAUNCH : an innovation concept for loading and unloading narrow-body airplanes

    NARCIS (Netherlands)

    Grinten, M.P. van der; Bronkhorst, R.E.; Delleman, N.J.

    2000-01-01

    In wide-body airplanes containers are used for handling luggage in and out the airplane. In narrow-body airplanes loading and unloading still is done manually causing heavy loads in awkward postures due to the limited height in the belly. Incidence rates of musculoskeletal health problems are high i

  3. 14 CFR Appendix F to Part 135 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification F.... F Appendix F to Part 135—Airplane Flight Recorder Specification The recorded values must meet the... voice recorder. 31. Air/ground sensor (primary airplane system reference nose or main gear)...

  4. A preliminary study of a wake vortex encounter hazard boundary for a B737-100 airplane

    Science.gov (United States)

    Reimer, Heidi M.; Vicroy, Dan D.

    1996-01-01

    A preliminary batch simulation study was conducted to define the wake decay required for a Boeing 737-100 airplane to safely encounter a Boeing 727 wake and land. The baseline six-degree-of-freedom B737 simulation was modified to include a wake model and the strip-theory calculation of the vortex-induced forces and moments. The guidance and control inputs for the airplane were provided by an autoland system. The wake strength and encounter altitude were varied to establish a safe encounter boundary. The wake was positioned such that the desired flight path traversed the core of the port Vortex. Various safe landing criteria were evaluated for defining a safe encounter boundary. A sensitivity study was also conducted to assess the effects of encounter model inaccuracies.

  5. Flight test results for several light, canard-configured airplanes

    Science.gov (United States)

    Brown, Philip W.

    1987-01-01

    Brief flight evaluations of two different, light, composite constructed, canard and winglet configured airplanes were performed to assess their handling qualities; one airplane was a single engine, pusher design and the other a twin engine, push-pull configuration. An emphasis was placed on the slow speed/high angle of attack region for both airplanes and on the engine-out regime for the twin. Mission suitability assessment included cockpit and control layout, ground and airborne handling qualities, and turbulence response. Very limited performance data was taken. Stall/spin tests and the effects of laminar flow loss on performance and handling qualities were assessed on an extended range, single engine pusher design.

  6. Design of the ARES Mars Airplane and Mission Architecture

    Science.gov (United States)

    Braun, Robert D.; Wright, Henry S.; Croom, Mark A.; Levine, Joel S.; Spencer, David A.

    2006-01-01

    Significant technology advances have enabled planetary aircraft to be considered as viable science platforms. Such systems fill a unique planetary science measurement gap, that of regional-scale, near-surface observation, while providing a fresh perspective for potential discovery. Recent efforts have produced mature mission and flight system concepts, ready for flight project implementation. This paper summarizes the development of a Mars airplane mission architecture that balances science, implementation risk and cost. Airplane mission performance, flight system design and technology maturation are described. The design, analysis and testing completed demonstrates the readiness of this science platform for use in a Mars flight project.

  7. FEATURES AND PROSPECTS FOR USE OF WIND-POWERED DRIVE ON AGRICULTURAL AIRPLANE

    Directory of Open Access Journals (Sweden)

    2016-01-01

    Full Text Available The article deals with the wind-powered drive location and functioning pecularities of agricultural airplane special equipment. The data on the advantages and prospects of the use of the wind-powered drive on agricultural aircraft as well as the experimental and analytical data on discontinuity of the wind stream in the zone of the wind-powered drive installa- and parameters of its operation at aerial spraying on the example of specially equipped An-2 are presented. A mathe- matical model of a wind propeller in discontinuous wind stream is developed. Software package to comprehensively assess wind-powered drive conditions and performance indicators is generated and tested taking into account experimental data, as well as airplane performance and flight modes. The typical data on the wind propeller and the wind-powered drive in the spraying process are received; specific features of the dynamics at the wind-powered drive turning-on and the wind propel- ler rotation at zero load are determined and the data on the wind-propeller blades load imbalance at spraying and transient processes are defined. The author made a quantitative estimation of how the standard change of flight parameters and the operation of the aircraft power plant at spraying influence on the factors of wind-powered drive operation and working liq- uids suppey. The main tendencies, qualitative and quantitative aspects of a wind-powered drive use are defined when per- forming aerial works and the proposals and recommendations for improving and using it in the future are made. The find- ings of the work can be used in the wind-powered drive of agricultural airplane special equipment designing and moderni- zation and drilling of the operational and technological procedures of aerial works performance in agriculture and forestry.

  8. 78 FR 12991 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-26

    ... elevator surface, resulting in a significant pitch upset and possible loss of control of the airplane... elevator power control actuator (PCA) bellcrank assemblies to determine the condition of the shear rivets... repetitive testing of the elevator control system to determine if an elevator PCA is rigged incorrectly, and...

  9. 78 FR 32579 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-05-31

    ... 1000) airplanes. This proposed AD was prompted by reports of erratic pitch movement and oscillatory behaviors of the elevator control system. This proposed AD would require repetitive replacement of the.... We are proposing this AD to prevent erratic pitch movement and transient accelerations, which could...

  10. 78 FR 43761 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-07-22

    ... the shaft swaged bearing installed in the tailstock end of each elevator power control unit (PCU), and... difficulties in pitch control, and consequent loss of controllability of the airplane. DATES: This AD becomes... Information (MCAI) states: Several reports have been received on the elevator power control units (PCUs) where...

  11. 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 ] Locust, Room....mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA,...

  12. 77 FR 75402 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-20

    ... discharge of the main battery, which could result in multiple system degradation, reduced airplane... corrected, could result in discharge of the main battery, which could result in multiple system degradation... ``BAT'' position, isolating the battery and standby buses, disabling the battery charger, and...

  13. 78 FR 22802 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-04-17

    ... in-flight resulting in decreased airplane control and performance, possible runway excursions, and... Tran, Aerospace Engineer, Propulsion Branch, ANM-140S, Seattle Aircraft Certification Office (ACO), FAA... motor switcher or shutoff solenoid valves because of overheating. This let the air motor shutoff...

  14. 77 FR 65617 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-10-30

    ... parking brake hydraulic accumulator, and relocating the parking brake accumulator, on the subject airplanes. We are issuing this AD to prevent failure of the screw caps and/or end caps of the parking brake... the CL-600- 2B19, Part Number (P/N) 08-60197-001 (Parking Brake Accumulator), are installed on...

  15. 78 FR 61164 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-03

    ... bushings, and inner cylinder bushings. For all airplanes, this AD requires a maintenance program revision... proposed to require a maintenance program revision, one-time inspections of the MLG truck beam, and related..., 2013) to specify the repetitive interval for the lubrication schedule (as referenced in Boeing...

  16. 77 FR 60285 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-03

    ... including the repetitive lubrication in the airplane maintenance program. We agree that accomplishment of.... This AD requires repetitive lubrication of the MLG pivot joints; repetitive detailed inspections of the... Register on May 1, 2012 (77 FR 25647). That NPRM proposed to require repetitive lubrication of the...

  17. 77 FR 61539 - Airworthiness Directives; DASSAULT AVIATION Airplanes

    Science.gov (United States)

    2012-10-10

    ... constitute a fire hazard. To address this unsafe condition, Dassault Aviation have developed a structural...; ] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; DASSAULT AVIATION Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice...

  18. 78 FR 42895 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-18

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM... to detect WFD before it becomes a hazard to flight. We will not grant any extensions of...

  19. 78 FR 8999 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-07

    ... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034...-400 series airplanes. This proposed AD was prompted by reports of auxiliary power unit (APU) faults... the APU power feeder cables; replacing the clamps and installing grommets; and related...

  20. 78 FR 33010 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2013-06-03

    ... in an aircraft maintenance manual is incorrect for Saab 340B airplane. This proposed AD would require... information identified in this proposed AD, contact Saab AB, Saab Aeronautics, SE-581 88, Link ping, Sweden... Aircraft Maintenance Manual (AMM), which quotes an elevator position of 4 degrees trailing edge down...

  1. Experiments on the resistance of airplane wheels and radiators

    Science.gov (United States)

    1924-01-01

    Experiments were made on the resistance of four airplane wheels of different sizes and coverings and two Lamblin radiators. The results show the important influence of the wheel coverings. The closing of a shutter, which was fitted to one of the radiators, considerably lessened the resistance.

  2. 78 FR 14164 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2013-03-05

    ... the FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...- 4119; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  3. 78 FR 36407 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-06-18

    ... ``T'' after the serial number (S/N) on the identification plate for cracks until they are replaced by... & 440) airplanes, certificated in any category, serial numbers 7003 and subsequent. (d) Subject Air Transport Association (ATA) of America Code 29, Hydraulic Power; 32, Landing Gear. (e) Reason This AD was...

  4. 77 FR 10413 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-02-22

    ... includes serial numbers (S/N) 5824 and subsequent in the applicability. Those airplanes are included in... category; serial numbers 5701 through 5802 inclusive, 5804 through 5808 inclusive, 5810 through 5816 inclusive, 5819, 5822, 5823 and subsequent. ] (d) Subject Air Transport Association (ATA) of America Codes...

  5. 76 FR 66200 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-10-26

    ... Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207... http://www.regulations.gov ; or in person at the Docket Management Facility between 9 a.m. and 5 p.m...; small air bubbles, air pockets, blister-like areas, or solid particles in the secondary fuel...

  6. 78 FR 21079 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-04-09

    .... Discussion Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued..., New York Aircraft Certification Office (ACO), ANE-170, Transport Airplane Directorate, FAA; or TCCA... either the Manager, New York ACO, ANE- 170, FAA; or Transport Canada Civil Aviation (TCCA) (or...

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

    Science.gov (United States)

    Jones, Lisa (Technical Monitor); Robertson, S. H.; Johnson, N. B.; Hall, D. S.; Rimson, I. J.

    2002-01-01

    This report presents the results of a study, funded by the Federal Aviation Administration (FAA), 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. Army, which ultimately led to the current state of the art in CRFS technology. It describes the basic research, testing, field investigations and production efforts which have led to the highly successful military CRFS, which has saved many lives and reduced costs of accidents. Current CRFS technology used in transport category airplanes is defined and compared to the available state-of-the-art technology. The report provides information to the FAA and other government organizations which can help them plan their efforts to improve the state of crash fire protection in the transport airplane fleet. The report provides guidance to designers looking for information about CRFS design problems, analysis tools to use for product improvement, and a summary of current and proposed regulations for transport category airplane fuel systems.

  8. 77 FR 36206 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-18

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... proposing this AD to prevent contactor failures, which could result in uncontained hot debris flow due to ELMS contactor breakdown, consequent smoke and heat damage to airplane structure and equipment...

  9. 76 FR 70379 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2011-11-14

    ... fuel return line assembly and both the right steering tube assembly and the airplane structure... also post a report summarizing each substantive verbal contact we receive about this proposed AD... structure, adjusting as necessary. That AD resulted from reports of chafed fuel return line...

  10. 78 FR 65204 - Airworthiness Directives; BAE Systems (Operations) Limited Airplanes

    Science.gov (United States)

    2013-10-31

    ... in the engine pylon separating from the wing, with consequent damage to the airplane and reduced... report of a cracked pick-up bracket of the forward outboard pylon of the number 1 engine due to stress corrosion. This AD requires repetitive inspections and, depending on findings, repair of the pylon...

  11. 78 FR 22215 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-15

    ... currently requires modification of the nacelle strut and wing structure; for certain airplanes, repetitive..., November 26, 1999)). AD 2004-12-07 requires modification of the nacelle strut and wing structure; and for... America Code 54, Nacelles/Pylons. (e) Unsafe Condition This AD was prompted by reports indicating that...

  12. 78 FR 9781 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2013-02-12

    ... November 30, 2012 (77 FR 71357), and proposed to supersede AD 2010-20-18, Amendment 39- 16453 (75 FR 59606, September 28, 2010). Since we issued AD 2010-20-18, Amendment 39-16453 (75 FR 59606, September 28, 2010... airplanes. This AD also retains all actions in AD 2010-20-18, Amendment 39-16453 (75 FR 59606, September...

  13. 78 FR 28130 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-05-14

    ... have a Required Inspection Item for any maintenance work involving the upper MLG assembly. The ALPA.... Transport Canada Civil Aviation (TCCA), the State of Design Authority, ] concurred with Bombardier, Inc.'s... the airplane maintenance manual, the upper MLG uplock assembly will be correctly installed. In...

  14. 76 FR 53308 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2011-08-26

    ...) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Actions To... done: ] Table 2--Actions, Compliance and Procedures Actions Compliance Procedures (1) Option 1: For all... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request...

  15. 76 FR 67346 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2011-11-01

    ... operators of these airplanes. This AD requires replacing certain lithium-ion batteries installed as the main... equipped with a lithium-ion battery as the main aircraft battery. We are issuing this AD to correct the... issued Emergency AD 2011-21-51, which requires replacing the lithium-ion main aircraft battery, Cessna...

  16. 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.

  17. 77 FR 45979 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-08-02

    ...] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft, Inc. Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for certain Piper Aircraft, Inc. (type certificate previously held by The New Piper... Federal holidays. For service information identified in this proposed AD, contact Piper Aircraft, Inc...

  18. Equations of Airplane Motion for Large Disturbances from Steady Flight

    Science.gov (United States)

    1955-05-01

    For any set if body axes, however, the followlv.i definitions are used. The- nxes are ortho~ oral , having their origiiis at the airplune’s center of...2 9 ) In order to obtain nwirical solutions of the equations of airplane motion the aerodymmle forces und moments must be expresed in terms of the

  19. 77 FR 37770 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-25

    .... Request To Clarify the Applicability Regarding the Installation of Winglets American Airlines (American... for airplanes covered by the applicability of the NPRM are affected by the installation of winglets... winglets. Aviation Partners Boeing (APB) stated it has reviewed Boeing Alert Service Bulletin...

  20. 77 FR 63714 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-17

    ... airplanes. This AD was prompted by a report of elevator vibration and bearing swage failures. This AD... Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Kelly McGuckin, Aerospace... Controls. (e) Unsafe Condition This AD was prompted by a report of elevator vibration and bearing...