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Sample records for control jstar airplane

  1. 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)

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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...

  7. 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...

  8. Does the Joint Surveillance Target Attack Radar System (JSTARS) Support Military Peace Operations? A Case Study of JSTARS Support to Operation JOINT ENDEAVOR.

    Science.gov (United States)

    2007-11-02

    Socialist Republics (Bosnia-Herzegovina, Croatia, Macedonia, Montenegro , Serbia, and Slovenia) and two Socialist Autonomous Provinces (Kosovo and...Europe (USAREUR) as well. 21 Roberto Corsini, Colonel, Italian Air Force, "The Balkan War, What Role for Airpower?" Air Power Journal, (Winter 95...Cappacio, Tony. "An Army Bosnia Review Rates JSTARS a White Elephant." Defense Week. (25 October 1996). Corsini, Roberto , COL, Italian Air Force

  9. An Evaluation of Automatic Control System Concepts for General Aviation Airplanes

    Science.gov (United States)

    Stewart, E. C.

    1990-01-01

    A piloted simulation study of automatic longitudinal control systems for general aviation airplanes has been conducted. These automatic control systems were designed to make the simulated airplane easy to fly for a beginning or infrequent pilot. Different control systems are presented and their characteristics are documented. In a conventional airplane control system each cockpit controller commands combinations of both the airspeed and the vertical speed. The best system in the present study decoupled the airspeed and vertical speed responses to cockpit controller inputs. An important feature of the automatic system was that neither changing flap position nor maneuvering in steeply banked turns affected either the airspeed or the vertical speed. All the pilots who flew the control system simulation were favorably impressed with the very low workload and the excellent handling qualities of the simulated airplane.

  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. Highly integrated digital engine control system on an F-15 airplane

    Science.gov (United States)

    Burcham, F. W., Jr.; Haering, E. A., Jr.

    1984-01-01

    The Highly Integrated Digital Electronic Control (HIDEC) program will demonstrate and evaluate the improvements in performance and mission effectiveness that result from integrated engine/airframe control systems. This system is being used on the F-15 airplane. An integrated flightpath management mode and an integrated adaptive engine stall margin mode are implemented into the system. The adaptive stall margin mode is a highly integrated mode in which the airplane flight conditions, the resulting inlet distortion, and the engine stall margin are continuously computed; the excess stall margin is used to uptrim the engine for more thrust. The integrated flightpath management mode optimizes the flightpath and throttle setting to reach a desired flight condition. The increase in thrust and the improvement in airplane performance is discussed.

  12. 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...

  13. Flight investigation of the effect of control centering springs on the apparent spiral stability of a personal-owner airplane

    Science.gov (United States)

    Campbell, John P; Hunter, Paul A; Hewes, Donald E; Whitten, James B

    1952-01-01

    Report presents the results of a flight investigation conducted on a typical high-wing personal-owner airplane to determine the effect of control centering springs on apparent spiral stability. Apparent spiral stability is the term used to describe the spiraling tendencies of an airplane in uncontrolled flight as affected both by the true spiral stability of the perfectly trimmed airplane and by out-of-trim control settings. Centering springs were used in both the aileron and rudder control systems to provide both a positive centering action and a means of trimming the airplane. The springs were preloaded so that when they were moved through neutral they produced a nonlinear force gradient sufficient to overcome the friction in the control surface at the proper setting for trim. The ailerons and rudder control surfaces did not have trim tabs that could be adjusted in flight.

  14. Flight Investigation of a Normal-Acceleration Automatic Longitudinal Control System in a Fighter Airplane

    Science.gov (United States)

    Sjoberg, S. A.; Russell, Walter R.; Alford, William L.

    1958-01-01

    A flight investigation was made to obtain experimental information on the handling qualities of a normal-acceleration type of automatic longitudinal control system. The control system was installed in a subsonic fighter-type airplane. In hands-off (stick-free) flight the normal-acceleration control system attempted to regulate the normal acceleration to a constant value which is dependent on the automatic-control-system trim setting. In maneuvering flight a given pilot's stick deflection produced a proportional change in normal acceleration, the change in acceleration being independent of flight condition. A small side-located controller stick was used by the pilot to introduce signals into the automatic control system. In the flight program emphasis was placed on the acceleration-limiting capabilities of the control system. The handling qualities were investigated in maneuvers such as slow and rapid pull-ups and turns and also in flight operations such as cruising, stalls, landings, aerobatics, and air-to-air tracking. Good acceleration limiting was obtained with the normal-acceleration control system by limiting the magnitude of the input signal that the pilot could introduce into the control system. The same values of control-system gain settings could be used from an acceleration-limiting stand-point at both 10,000 and 30,000 feet for the complete speed range of the airplane. The response characteristics of the airplane-control system combination were also satisfactory at both high and low altitude with these same values of control-system gain setting. In the pilot's opinion, the normal-acceleration control system provided good stability and control characteristics in flight operations such as cruising, stalls, landings, aerobatics, and air-to-air tracking.

  15. Flight Investigation of the Effectiveness of an Automatic Aileron Trim Control Device for Personal Airplanes

    Science.gov (United States)

    Phillips, William H; Kuehnel, Helmut A; Whitten, James B

    1957-01-01

    A flight investigation to determine the effectiveness of an automatic aileron trim control device installed in a personal airplane to augment the apparent spiral stability has been conducted. The device utilizes a rate-gyro sensing element in order to switch an on-off type of control that operates the ailerons at a fixed rate through control centering springs. An analytical study using phase-plane and analog-computer methods has been carried out to determine a desirable method of operation for the automatic trim control.

  16. 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...

  17. Motion of the two-control airplane in rectilinear flight after initial disturbances with introduction of controls following an exponential law

    Science.gov (United States)

    Klemin, Alexander

    1937-01-01

    An airplane in steady rectilinear flight was assumed to experience an initial disturbance in rolling or yawing velocity. The equations of motion were solved to see if it was possible to hasten recovery of a stable airplane or to secure recovery of an unstable airplane by the application of a single lateral control following an exponential law. The sample computations indicate that, for initial disturbances complex in character, it would be difficult to secure correlation with any type of exponential control. The possibility is visualized that the two-control operation may seriously impair the ability to hasten recovery or counteract instability.

  18. Development of an Active Flow Control Technique for an Airplane High-Lift Configuration

    Science.gov (United States)

    Shmilovich, Arvin; Yadlin, Yoram; Dickey, Eric D.; Hartwich, Peter M.; Khodadoust, Abdi

    2017-01-01

    This study focuses on Active Flow Control methods used in conjunction with airplane high-lift systems. The project is motivated by the simplified high-lift system, which offers enhanced airplane performance compared to conventional high-lift systems. Computational simulations are used to guide the implementation of preferred flow control methods, which require a fluidic supply. It is first demonstrated that flow control applied to a high-lift configuration that consists of simple hinge flaps is capable of attaining the performance of the conventional high-lift counterpart. A set of flow control techniques has been subsequently considered to identify promising candidates, where the central requirement is that the mass flow for actuation has to be within available resources onboard. The flow control methods are based on constant blowing, fluidic oscillators, and traverse actuation. The simulations indicate that the traverse actuation offers a substantial reduction in required mass flow, and it is especially effective when the frequency of actuation is consistent with the characteristic time scale of the flow.

  19. 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...

  20. Multiobjective insensitive design of airplane control systems with uncertain parameters

    Science.gov (United States)

    Schy, A. A.; Giesy, D. P.

    1981-01-01

    A multiobjective computer-aided design algorithm has been developed which minimizes the sensitivity of the design objectives to uncertainties in system parameters. The more important uncertain parameters are described by a gaussian random vector with known covariance matrix, and a vector sensitivity objective function is defined as the probabilities that the design objectives will violate specified requirements constraints. Control system parameters are found which minimize the sensitivity vector in a Pareto-optimal sense, using constrained minimization algorithms. Example results are shown for lateral stability augmentation system (SAS) design for three Shuttle flight conditions.

  1. 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...

  2. PALS-Based Analysis of an Airplane Multirate Control System in Real-Time Maude

    Directory of Open Access Journals (Sweden)

    Kyungmin Bae

    2012-12-01

    Full Text Available Distributed cyber-physical systems (DCPS are pervasive in areas such as aeronautics and ground transportation systems, including the case of distributed hybrid systems. DCPS design and verification is quite challenging because of asynchronous communication, network delays, and clock skews. Furthermore, their model checking verification typically becomes unfeasible due to the huge state space explosion caused by the system's concurrency. The PALS ("physically asynchronous, logically synchronous" methodology has been proposed to reduce the design and verification of a DCPS to the much simpler task of designing and verifying its underlying synchronous version. The original PALS methodology assumes a single logical period, but Multirate PALS extends it to deal with multirate DCPS in which components may operate with different logical periods. This paper shows how Multirate PALS can be applied to formally verify a nontrivial multirate DCPS. We use Real-Time Maude to formally specify a multirate distributed hybrid system consisting of an airplane maneuvered by a pilot who turns the airplane according to a specified angle through a distributed control system. Our formal analysis revealed that the original design was ineffective in achieving a smooth turning maneuver, and led to a redesign of the system that satisfies the desired correctness properties. This shows that the Multirate PALS methodology is not only effective for formal DCPS verification, but can also be used effectively in the DCPS design process, even before properties are verified.

  3. 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.

  4. 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...

  5. Pareto-optimal multi-objective design of airplane control systems

    Science.gov (United States)

    Schy, A. A.; Johnson, K. G.; Giesy, D. P.

    1980-01-01

    A constrained minimization algorithm for the computer aided design of airplane control systems to meet many requirements over a set of flight conditions is generalized using the concept of Pareto-optimization. The new algorithm yields solutions on the boundary of the achievable domain in objective space in a single run, whereas the older method required a sequence of runs to approximate such a limiting solution. However, Pareto-optimality does not guarantee a satisfactory design, since such solutions may emphasize some objectives at the expense of others. The designer must still interact with the program to obtain a well-balanced set of objectives. Using the example of a fighter lateral stability augmentation system (SAS) design over five flight conditions, several effective techniques are developed for obtaining well-balanced Pareto-optimal solutions. For comparison, one of these techniques is also used in a recently developed algorithm of Kreisselmeier and Steinhauser, which replaces the hard constraints with soft constraints, using a special penalty function. It is shown that comparable results can be obtained.

  6. 76 FR 31456 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System: Control...

    Science.gov (United States)

    2011-06-01

    ...; Electronic Flight Control System: Control Surface Position Awareness AGENCY: Federal Aviation Administration... design features include an electronic flight control system. The applicable airworthiness regulations do... an electronic flight control system and no direct coupling from the cockpit controller to the...

  7. 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 ...

  8. An overview of integrated flight-propulsion controls flight research on the NASA F-15 research airplane

    Science.gov (United States)

    Burcham, Frank W., Jr.; Gatlin, Donald H.; Stewart, James F.

    1995-01-01

    The NASA Dryden Flight Research Center has been conducting integrated flight-propulsion control flight research using the NASA F-15 airplane for the past 12 years. The research began with the digital electronic engine control (DEEC) project, followed by the F100 Engine Model Derivative (EMD). HIDEC (Highly Integrated Digital Electronic Control) became the umbrella name for a series of experiments including: the Advanced Digital Engine Controls System (ADECS), a twin jet acoustics flight experiment, self-repairing flight control system (SRFCS), performance-seeking control (PSC), and propulsion controlled aircraft (PCA). The upcoming F-15 project is ACTIVE (Advanced Control Technology for Integrated Vehicles). This paper provides a brief summary of these activities and provides background for the PCA and PSC papers, and includes a bibliography of all papers and reports from the NASA F-15 project.

  9. 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.

  10. 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.

  11. 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...

  12. Local flow management/profile descent algorithm. Fuel-efficient, time-controlled profiles for the NASA TSRV airplane

    Science.gov (United States)

    Groce, J. L.; Izumi, K. H.; Markham, C. H.; Schwab, R. W.; Thompson, J. L.

    1986-01-01

    The Local Flow Management/Profile Descent (LFM/PD) algorithm designed for the NASA Transport System Research Vehicle program is described. The algorithm provides fuel-efficient altitude and airspeed profiles consistent with ATC restrictions in a time-based metering environment over a fixed ground track. The model design constraints include accommodation of both published profile descent procedures and unpublished profile descents, incorporation of fuel efficiency as a flight profile criterion, operation within the performance capabilities of the Boeing 737-100 airplane with JT8D-7 engines, and conformity to standard air traffic navigation and control procedures. Holding and path stretching capabilities are included for long delay situations.

  13. Minimum time and fuel flight profiles for an F-15 airplane with a Highly Integrated Digital Electronic Control (HIDEC) system

    Science.gov (United States)

    Haering, E. A., Jr.; Burcham, F. W., Jr.

    1984-01-01

    A simulation study was conducted to optimize minimum time and fuel consumption paths for an F-15 airplane powered by two F100 Engine Model Derivative (EMD) engines. The benefits of using variable stall margin (uptrim) to increase performance were also determined. This study supports the NASA Highly Integrated Digital Electronic Control (HIDEC) program. The basis for this comparison was minimum time and fuel used to reach Mach 2 at 13,716 m (45,000 ft) from the initial conditions of Mach 0.15 at 1524 m (5000 ft). Results were also compared to a pilot's estimated minimum time and fuel trajectory determined from the F-15 flight manual and previous experience. The minimum time trajectory took 15 percent less time than the pilot's estimate for the standard EMD engines, while the minimum fuel trajectory used 1 percent less fuel than the pilot's estimate for the minimum fuel trajectory. The F-15 airplane with EMD engines and uptrim, was 23 percent faster than the pilot's estimate. The minimum fuel used was 5 percent less than the estimate.

  14. 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.

  15. Simulator study of the effectiveness of an automatic control system designed to improve the high-angle-of-attack characteristics of a fighter airplane

    Science.gov (United States)

    Gilbert, W. P.; Nguyen, L. T.; Vangunst, R. W.

    1976-01-01

    A piloted, fixed-base simulation was conducted to study the effectiveness of some automatic control system features designed to improve the stability and control characteristics of fighter airplanes at high angles of attack. These features include an angle-of-attack limiter, a normal-acceleration limiter, an aileron-rudder interconnect, and a stability-axis yaw damper. The study was based on a current lightweight fighter prototype. The aerodynamic data used in the simulation were measured on a 0.15-scale model at low Reynolds number and low subsonic Mach number. The simulation was conducted on the Langley differential maneuvering simulator, and the evaluation involved representative combat maneuvering. Results of the investigation show the fully augmented airplane to be quite stable and maneuverable throughout the operational angle-of-attack range. The angle-of-attack/normal-acceleration limiting feature of the pitch control system is found to be a necessity to avoid angle-of-attack excursions at high angles of attack. The aileron-rudder interconnect system is shown to be very effective in making the airplane departure resistant while the stability-axis yaw damper provided improved high-angle-of-attack roll performance with a minimum of sideslip excursions.

  16. 76 FR 14795 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System Mode...

    Science.gov (United States)

    2011-03-18

    ...; Electronic Flight Control System Mode Annunciation. AGENCY: Federal Aviation Administration (FAA), DOT... electronic flight control system. The applicable airworthiness regulations do not contain adequate or...). Novel or Unusual Design Features The GVI will have a fly-by-wire electronic flight control system. This...

  17. 75 FR 77569 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System Mode...

    Science.gov (United States)

    2010-12-13

    ...; Electronic Flight Control System Mode Annunciation AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... design features include an electronic flight control system. The applicable airworthiness regulations do... system. This system provides an electronic interface between the pilot's flight controls and ] the flight...

  18. 78 FR 67077 - Special Conditions: Airbus, Model A350-900 Series Airplane; Side Stick Controllers

    Science.gov (United States)

    2013-11-08

    ... controllers for pitch and roll control instead of conventional wheels and columns. The applicable... (or signing the comment for an association, business, labor union, etc.). DOT's complete Privacy Act... predecessors the A320, A330, A340 and A380, will use side stick controllers for pitch and roll...

  19. Digital Electronic Engine Control (DEEC) Flight Evaluation in an F-15 Airplane

    Science.gov (United States)

    1984-01-01

    Flight evaluation in an F-15 aircraft by digital electronic engine control (DEEC) was investigated. Topics discussed include: system description, F100 engine tests, effects of inlet distortion on static pressure probe, flight tests, digital electronic engine control fault detection and accommodation flight evaluation, flight evaluation of a hydromechanical backup control, augmentor transient capability of an F100 engine, investigation of nozzle instability, real time in flight thrust calculation, and control technology for future aircraft propulsion systems. It is shown that the DEEC system is a powerful and flexible controller for the F100 engine.

  20. Performance improvements of a highly integrated digital electronic control system for an F-15 airplane

    Science.gov (United States)

    Putnam, T. W.; Burcham, F. W., Jr.; Andries, M. G.; Kelly, J. B.

    1985-01-01

    The NASA highly integrated digital electronic control (HIDEC) program is structured to conduct flight research into the benefits of integrating an aircraft flight control system with the engine control system. A brief description of the HIDEC system installed on an F-15 aircraft is provided. The adaptive engine control system (ADECS) mode is described in detail, together with simulation results and analyses that show the significant excess thrust improvements achievable with the ADECS mode. It was found that this increased thrust capability is accompanied by reduced fan stall margin and can be realized during flight conditions where engine face distortion is low. The results of analyses and simulations also show that engine thrust response is improved and that fuel consumption can be reduced. Although the performance benefits that accrue because of airframe and engine control integration are being demonstrated on an F-15 aircraft, the principles are applicable to advanced aircraft such as the advanced tactical fighter and advanced tactical aircraft.

  1. Flight testing the digital electronic engine control in the F-15 airplane

    Science.gov (United States)

    Myers, L. P.

    1984-01-01

    The digital electronic engine control (DEEC) is a full-authority digital engine control developed for the F100-PW-100 turbofan engine which was flight tested on an F-15 aircraft. The DEEC hardware and software throughout the F-15 flight envelope was evaluated. Real-time data reduction and data display systems were implemented. New test techniques and stronger coordination between the propulsion test engineer and pilot were developed which produced efficient use of test time, reduced pilot work load, and greatly improved quality data. The engine pressure ratio (EPR) control mode is demonstrated. It is found that the nonaugmented throttle transients and engine performance are satisfactory.

  2. Flight evaluation of a digital electronic engine control system in an F-15 airplane

    Science.gov (United States)

    Myers, L. P.; Mackall, K. G.; Burcham, F. W., Jr.; Walter, W. A.

    1982-01-01

    Benefits provided by a full-authority digital engine control are related to improvements in engine efficiency, performance, and operations. An additional benefit is the capability of detecting and accommodating failures in real time and providing engine-health diagnostics. The digital electronic engine control (DEEC), is a full-authority digital engine control developed for the F100-PW-100 turbofan engine. The DEEC has been flight tested on an F-15 aircraft. The flight tests had the objective to evaluate the DEEC hardware and software over the F-15 flight envelope. A description is presented of the results of the flight tests, which consisted of nonaugmented and augmented throttle transients, airstarts, and backup control operations. The aircraft, engine, DEEC system, and data acquisition and reduction system are discussed.

  3. Feeling safe in the plane: neural mechanisms underlying superior action control in airplane pilot trainees – a combined EEG/MRS study

    Science.gov (United States)

    Dharmadhikari, Shalmali; Chmielewski, Witold; Glaubitz, Benjamin; Schmidt-Wilcke, Tobias; Edden, Richard; Dydak, Ulrike; Beste, Christian

    2015-01-01

    In day-to-day life, we need to apply strategies to cascade different actions for efficient unfolding of behaviour. While deficits in action cascading are examined extensively, almost nothing is known about the neuronal mechanisms mediating superior performance above the normal level. To examine this question, we investigate action control in airplane pilot trainees. We use a stop-change paradigm that is able to estimate the efficiency of action cascading on the basis of mathematical constraints. Behavioural and EEG data is analyzed along these constraints and integrated with neurochemical data obtained using Magnetic Resonance Spectroscopy (MRS) from the striatal gamma-aminobutyric acid (GABA) -ergic system. We show that high performance in action cascading, as exemplified in airplane pilot trainees, can be driven by intensified attentional processes, circumventing response selection processes. The results indicate that the efficiency of action cascading and hence the speed of responding as well as attentional gating functions are modulated by striatal GABA and Glutamate + Glutamine concentrations. In superior performance in action cascading similar increases in the concentrations of GABA and Glutamate + Glutamine lead to stronger neurophysiological and behavioural effects as compared to subjects with normal performance in action cascading. PMID:24753040

  4. 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...

  5. 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)...

  6. Flight Measurements of the Lateral Control Characteristics of an Airplane Equipped with a Combination Aileron-Spoiler Control System

    Science.gov (United States)

    1942-09-01

    pitot -static hold, which was free to rotate in pitch, located on a boom extending about a chord length ahead of the loft wing tip. All according...29 through 56 a3 the 3tick-position recorder was mountod at the roar stick noar which th: lateral control tubos into tho wings arc attached. Thus

  7. 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...

  8. 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:...

  9. 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...

  10. 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...

  11. 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...

  12. 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.

  13. Effects of laminar flow control on the performance of a large span-distributed-load flying-wing cargo airplane concept

    Science.gov (United States)

    Jernell, L. S.

    1978-01-01

    The effects of laminar flow control (LFC) on the performance of a large span-distributed-load flying-wing cargo airplane concept having a design payload of 2.669 MN and range of 5.93 Mm were determined. Two configurations were considered. One employed laminarized flow over the entire surfaces of the wing and vertical tails, with the exception of the estimated areas of interference due to the fuselage and engines. The other case differed only in that laminar flow was not applied to the flaps, elevons, spoilers, or rudders. The two cases are referred to as the 100 percent and 80 percent laminar configurations, respectively. The utilization of laminar flow control results in reductions in the standard day, sea level installed maximum static thrust per engine from 240 kN for the non-LFC configuration to 205 kN for the 100 percent laminar configuration and 209 kN for the 80 percent case. Weight increases due to the LFC systems cause increases in the operating empty weights of approximately 3 to 4 percent. The design takeoff gross weights decrease approximately 3 to 5 percent. The FAR-25 takeoff field distances for the LFC configurations are greater by about 6 to 7 percent. Fuel efficiencies for the respective configurations are increased 33 percent and 23 percent.

  14. 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...

  15. 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...

  16. 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...

  17. 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....

  18. 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...

  19. 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...

  20. 77 FR 57039 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2012-09-17

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

  1. 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.

  2. 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...

  3. 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,...

  4. Comparison of flight results with digital simulation for a digital electronic engine control in an F-15 airplane

    Science.gov (United States)

    Myers, L. P.; Burcham, F. W., Jr.

    1983-01-01

    Substantial benefits of a full authority digital electronic engine control on an air breathing engine were demonstrated repeatedly in simulation studies, ground engine tests, and engine altitude test facilities. A digital engine electronic control system showed improvements in efficiency, performance, and operation. An additional benefit of full authority digital controls is the capability of detecting and correcting failures and providing engine health diagnostics.

  5. 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...

  6. 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....

  7. Pollution Type and Control Ways of Hydraulic System of Civil Airplane%民机液压系统污染种类以及控制方法

    Institute of Scientific and Technical Information of China (English)

    翁康静

    2015-01-01

    介绍了液压系统的集中污染源,分析了污染源造成的原因并采取了相应的控制措施。%This paper mainly analyzed the pollution sources in the hydraulic system of civil airplane ,found out the reasons ,and put forword the relevant measures .

  8. Active control of broadband sound transmission through an airplane trim panel using hybrid feedforward and feedback techniques

    Science.gov (United States)

    Ho, Yun-Ren

    This thesis presents a method of actively controlling the sound transmission through two designs of aircraft trim panels using a hybrid feedforward and feedback control technique. The active trim panels are designed for a high stiffness to mass ratio to allow only rigid body modal vibration in the frequency range of interest, thus simplifying the control technique, which is developed to minimize the vibration of a panel and therefore minimize the sound transmission. The hybrid controller consists of an adaptive feedforward (filtered-X LMS algorithm) controller in conjunction with a linear quadratic Gaussian (LQG) feedback controller. The LQG feedback controller is designed to alter the dynamics of the estimated plant model of the filtered-x LMS algorithm, improving control performance for both steady state and transient disturbances. Numerical simulations indicate that the hybrid controller is a more effective method of reducing the vibrations of the panels (and therefore the sound transmission) when compared to using only a feedforward or feedback controller. Experiments were carried out by using two trim panel designs, the first exhibiting only an out-of-plane piston mode, and the second exhibiting three rigid body modes and the first bending mode in control frequency range. For the first trim panel, the implementation of the active control experiment showed that a 5 to 20 dB reduction in both the vibration level and sound pressure level could be achieved over 50 to 500 Hz under a plane acoustic wave excitation. For the second trim panel, the hybrid controller achieved a 5 to 20 dB vibration reduction over the 50 to 400 Hz frequency band under structure-borne excitation. For air-borne excitation, the control scheme produced a 5 to 15 dB vibration reduction over the 70 to 400 Hz bandwidth with a reference microphone attached on the center of the fuselage skin and facing the sound source. In the near field (50 cm from the panel), the sound pressure levels measured

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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.

  15. 某型飞机燃油系统容错控制策略研究%Fault-tolerant Control Strategy Research of the Fuel System of a Type Airplane

    Institute of Scientific and Technical Information of China (English)

    张晶; 魏东; 赵智姝

    2011-01-01

    本文介绍了容错控制的基本概念,在此基础上对容错控制方法进行了分析,并给出了某型飞机燃油系统的容错控制策略,提高了燃油系统的可靠性,改善了飞机的飞行品质.%This paper introduces the basic concept of fault-tolerant control, on the basis, analyzes fault-tolerant control methods, and gives the fault-tolerant control strategy of the fuel system of a type airplane, which improved the reliability of fuel system and improved the aircraft's quality.

  16. 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...

  17. 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...

  18. 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.

  19. 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...

  20. 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...

  1. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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.

  8. 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.

  9. 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...

  10. 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...

  11. 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...

  12. 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

  13. Natural laminar flow airfoil design considerations for winglets on low-speed airplanes

    Science.gov (United States)

    Vandam, C. P.

    1984-01-01

    Winglet airfoil section characteristics which significantly influence cruise performance and handling qualities of an airplane are discussed. A good winglet design requires an airfoil section with a low cruise drag coefficient, a high maximum lift coefficient, and a gradual and steady movement of the boundary layer transition location with angle of attack. The first design requirement provides a low crossover lift coefficient of airplane drag polars with winglets off and on. The other requirements prevent nonlinear changes in airplane lateral/directional stability and control characteristics. These requirements are considered in the design of a natural laminar flow airfoil section for winglet applications and chord Reynolds number of 1 to 4 million.

  14. 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:...

  15. 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:...

  16. 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...

  17. 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,...

  18. 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...

  19. 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...

  20. 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...

  1. 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...

  2. 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...

  3. 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...

  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. 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...

  6. Airplane Actuation Trade Study

    Science.gov (United States)

    1983-01-01

    the electrical subsystem it is anticipated that 270 HVDC will not always be the most efficient power source. Lighting, instrumentation, avionics...sizing considerations all motor loads such as surface control actuators, fuel pumps, ECS fans and pumps, etc., are regarded as powered by 270 HVDC . All

  7. 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,...

  8. 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.

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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.

  14. 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.

  15. 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.

  16. Flight test results of an automatic support system on board a YF-12A airplane. [for jet engine inlet air control

    Science.gov (United States)

    Love, J. E.

    1974-01-01

    An automatic support system concept that isolated faults in an existing nonavionics subsystem was flight tested up to a Mach number of 3. The adaptation of the automated support concept to an existing system (the jet engine automatic inlet control system) caused most of the problems one would expect to encounter in other applications. These problems and their solutions are discussed. Criteria for integrating automatic support into the initial design of new subsystems are included in the paper. Cost effectiveness resulted from both the low maintenance of the automated system and the man-hour saving resulting from the real time diagnosis of the monitored subsystem.

  17. Emergency Flight Control Using Computer-Controlled Thrust

    Science.gov (United States)

    Burcham, Frank W., Jr.; Fullerton, C. Gordon; Stewart, James F.; Gilyard, Glenn B.; Conley, Joseph A.

    1995-01-01

    Propulsion Controlled Aircraft (PCA) systems are digital electronic control systems undergoing development to provide limited maneuvering ability through variations of individual engine thrusts in multiple-engine airplanes. Provide landing capability when control surfaces inoperable. Incorporated on existing and future airplanes that include digital engine controls, digital flight controls, and digital data buses, adding no weight for additional hardware to airplane. Possible to handle total failure of hydraulic system, depending on how surfaces respond to loss of hydraulic pressure, and broken control cables or linkages. Future airplanes incorporate data from Global Positioning System for guidance to any suitable emergency runway in world.

  18. 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

  19. A theoretical analysis of the effect of time lag in an automatic stabilization system on the lateral oscillatory stability of an airplane

    Science.gov (United States)

    Sternfield, Leonard; Gates, Ordway B , Jr

    1951-01-01

    A method is presented for determining the effect of time lag in an automatic stabilization system on the lateral oscillatory stability of an airplane. The method is based on an analytical-graphical procedure. The critical time lag of the airplane-autopilot system is readily determined from the frequency-response analysis. The method is applied to a typical present-day airplane equipped with an automatic pilot sensitive to yawing acceleration and geared to the rudder so that rudder control is applied in proportion to the yawing acceleration. The results calculated for this airplane-autopilot system by this method are compared with the airplane motions calculated by a step-by-step procedure.

  20. 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...

  1. 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...

  2. 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...

  3. 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....

  4. 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...

  5. 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...

  6. 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...

  7. 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...

  8. Economic impact of applying advanced technologies to transport airplanes.

    Science.gov (United States)

    Carline, A. J. K.

    1972-01-01

    Various technologies have been studied which could have application to the design of future transport airplanes. These technologies include the use of supercritical aerodynamics, composite materials, and active control systems, together with advanced engine designs that provide lower noise and pollutant levels. The economic impact of each technology is shown for a typical fleet of 195-passenger, transcontinental commercial transports cruising at both 0.9M and 0.98M. Comparisons are made with conventional transports cruising at 0.82M. Effects of combining the technologies are discussed. An R & D program aimed at bringing the technologies to fruition is outlined.

  9. Fear of Flying in Airplanes: Effects of Minimal Therapist Guided Stress Inoculation Training.

    Science.gov (United States)

    Beckham, Jean C.; And Others

    Flight phobia is an area which has received little controlled investigation, even though between 10 and 20 percent of flight passengers report a fear of flying in airplanes. A study was conducted to examine the efectiveness of a minimal therapist guided form of stress inoculation training (SIT) for flight phobia. Flight phobic volunteers (N=28)…

  10. 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...

  11. 77 FR 29861 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-05-21

    ... low quantity''. The procedures prescribed the shut-off of the engine driven hydraulic pumps, resulting....28 Mark 0070 and 0100 airplanes. This AD was prompted by an in-flight failure of the hydraulic control panel, which resulted in the absence of pressure and quantity indication of the hydraulic...

  12. 77 FR 8181 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-02-14

    ... low quantity''. The procedures prescribed the shut-off of the engine driven hydraulic pumps, resulting... Mark 0070 and 0100 airplanes. This proposed AD was prompted by an in-flight failure of the hydraulic control panel, which resulted in the absence of pressure and quantity indication of the hydraulic...

  13. 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...

  14. 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...

  15. Applying face identification to detecting hijacking of airplane

    Science.gov (United States)

    Luo, Xuanwen; Cheng, Qiang

    2004-09-01

    That terrorists hijacked the airplanes and crashed the World Trade Center is disaster to civilization. To avoid the happening of hijack is critical to homeland security. To report the hijacking in time, limit the terrorist to operate the plane if happened and land the plane to the nearest airport could be an efficient way to avoid the misery. Image processing technique in human face recognition or identification could be used for this task. Before the plane take off, the face images of pilots are input into a face identification system installed in the airplane. The camera in front of pilot seat keeps taking the pilot face image during the flight and comparing it with pre-input pilot face images. If a different face is detected, a warning signal is sent to ground automatically. At the same time, the automatic cruise system is started or the plane is controlled by the ground. The terrorists will have no control over the plane. The plane will be landed to a nearest or appropriate airport under the control of the ground or cruise system. This technique could also be used in automobile industry as an image key to avoid car stealth.

  16. 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.

  17. 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.

  18. 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...

  19. 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...

  20. 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...

  1. 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...

  2. 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...

  3. 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.

  4. 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...

  5. 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,...

  6. 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...

  7. 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,...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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.

  15. 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...

  16. 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...

  17. 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.

  18. 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....

  19. Investigation of a fatal airplane crash: autopsy, computed tomography, and injury pattern analysis used to determine who was steering the plane at time of accident. A case report

    DEFF Research Database (Denmark)

    Høyer, Christian Bjerre; Nielsen, Trine Skov; Nagel, Lise Loft

    2012-01-01

    A fatal accident is reported in which a small single-engine light airplane crashed. The airplane carried two persons in the front seats, both of whom possessed valid pilot certificates. Both victims were subject to autopsy, including post-mortem computed tomography scanning (PMCT) prior to the au......A fatal accident is reported in which a small single-engine light airplane crashed. The airplane carried two persons in the front seats, both of whom possessed valid pilot certificates. Both victims were subject to autopsy, including post-mortem computed tomography scanning (PMCT) prior...... to the autopsy. The autopsies showed massive destruction to the bodies of the two victims but did not identify any signs of acute or chronic medical conditions that could explain loss of control of the airplane. PMCT, histological examination, and forensic chemical analysis also failed to identify an explanation...... for the crash. A detailed review of an airplane identical to the crashed airplane was performed in collaboration with the Danish Accident Investigation Board and the Danish National Police, National Centre of Forensic Services. The injuries were described using the abbreviated injury scale, the injury severity...

  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. 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...

  2. 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.

  3. 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,...

  4. 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...

  5. 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.

  6. 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,...

  7. 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.

  8. 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.

  9. 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...

  10. 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,...

  11. 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....

  12. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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....

  17. 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...

  18. 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...

  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. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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 &...

  13. 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:...

  14. 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,...

  15. 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,...

  16. 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...

  17. 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...

  18. Investigation of a fatal airplane crash: autopsy, computed tomography, and injury pattern analysis used to determine who was steering the plane at time of accident. A case report

    DEFF Research Database (Denmark)

    Høyer, Christian Bjerre; Nielsen, Trine Skov; Nagel, Lise Loft

    2012-01-01

    A fatal accident is reported in which a small single-engine light airplane crashed. The airplane carried two persons in the front seats, both of whom possessed valid pilot certificates. Both victims were subject to autopsy, including post-mortem computed tomography scanning (PMCT) prior to the au......A fatal accident is reported in which a small single-engine light airplane crashed. The airplane carried two persons in the front seats, both of whom possessed valid pilot certificates. Both victims were subject to autopsy, including post-mortem computed tomography scanning (PMCT) prior...... to the autopsy. The autopsies showed massive destruction to the bodies of the two victims but did not identify any signs of acute or chronic medical conditions that could explain loss of control of the airplane. PMCT, histological examination, and forensic chemical analysis also failed to identify an explanation...... of fatal airplane crashes should be subject to forensic autopsy, including PMCT and forensic chemical analysis. The continuous accumulation of knowledge about injury patterns from “simple” accidents is the foundation for the correct analysis of “difficult” accidents....

  19. 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.

  20. Studies on aerodynamic interferences between the components of transport airplane using unstructured Navier-Stokes simulations

    Energy Technology Data Exchange (ETDEWEB)

    Wang, G.; Ye, Z. [Northwestern Polytechnical Univ., National Key Lab. of Aerodynamic Design and Research, Xi' an (China)]. E-mail: wanggang@nwpu.edu.cn; yezy@nwpu.edu.cn

    2005-07-01

    It is well known that the aerodynamic interference flows widely exist between the components of conventional transport airplane, for example, the wing-fuselage juncture flow, wing-pylon-nacelle flow and tail-fuselage juncture flow. The main characteristic of these aerodynamic interferences is flow separation, which will increase the drag, reduce the lift and cause adverse influence on the stability and controllability of the airplane. Therefore, the modern civil transport designers should do their best to eliminate negative effects of aerodynamic interferences, which demands that the aerodynamic interferences between the aircraft components should be predicted and analyzed accurately. Today's CFD techniques provide us powerful and efficient analysis tools to achieve this objective. In this paper, computational investigations of the interferences between transport aircraft components have been carried out by using a viscous flow solver based on mixed element type unstructured meshes. (author)

  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. 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

  3. 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...

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

    Science.gov (United States)

    2010-01-04

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

  5. 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,...

  6. 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,...

  7. 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...

  8. 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...

  9. 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,...

  10. 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...

  11. 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,...

  12. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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...

  19. 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.

  20. 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.

  1. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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.

  6. A New Intelligent Airplane Landing Planning Method in Congested Airports

    Directory of Open Access Journals (Sweden)

    Kazem Dastgerdi

    2015-06-01

    Full Text Available Nowadays considering many advantages of air traveling, we notice that traffic congestion has significantly increased in airspace of countries, and it is expected that this growth rate, increases even more in the forthcoming years.This growth rate and different limitations posed on developing some airports led to the problem of landing airplanes to become one of the most important issues formed in the field of aviation. In this paper, in the form of a new approach based on CPSO algorithm for intelligent landing planning, determining optimal landing times, optimal allocation of runways, and at last the order of successive landings of planes has been done in a way that appropriately fulfills the main goal of the problem (minimizing the total flights delays; thus helping significantly to controlling air traffic congestion in airports approaches. The simulation results show that compared to the last presented methods, including methods based on genetic algorithms, GLS and Bionomic, has decreased the total amounts of flight delays considerably. Getting zero for total amount of flight delays for the two problems with real data of DFW airport in Texas, United States, confirms the more capability of CPSO algorithm compared to the other intelligent methods for obtaining optimal solutions to the problem.

  7. 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...

  8. 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.

  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 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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

  15. 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...

  16. 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

  17. 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)...

  18. 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...

  19. 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,...

  20. 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...

  1. 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.

  2. 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.

  3. Command and Control in Africa: Three Case Studies before and after Tactical C2

    Science.gov (United States)

    2014-08-01

    sensitive reconnais- sance operations ( SRO ) authorities. SRO missions by nature have to do with operation preparation of the environment (OPE...doctrinally held in intelli- gence channels, the JSTARS had the mission capacity for tactical and real-time C2 of ISR and SRO operations. This...JSTARS and off- board sources to create a cohesive operational picture. The aircraft’s SRO missions validated the requirement for the conduct of what is

  4. Manual Throttles-Only Control Effectivity for Emergency Flight Control of Transport Aircraft

    Science.gov (United States)

    Stevens, Richard; Burcham, Frank W., Jr.

    2009-01-01

    If normal aircraft flight controls are lost, emergency flight control may be attempted using only the thrust of engines. Collective thrust is used to control flightpath, and differential thrust is used to control bank angle. One issue is whether a total loss of hydraulics (TLOH) leaves an airplane in a recoverable condition. Recoverability is a function of airspeed, altitude, flight phase, and configuration. If the airplane can be recovered, flight test and simulation results on several transport-class airplanes have shown that throttles-only control (TOC) is usually adequate to maintain up-and-away flight, but executing a safe landing is very difficult. There are favorable aircraft configurations, and also techniques that will improve recoverability and control and increase the chances of a survivable landing. The DHS and NASA have recently conducted a flight and simulator study to determine the effectivity of manual throttles-only control as a way to recover and safely land a range of transport airplanes. This paper discusses TLOH recoverability as a function of conditions, and TOC landability results for a range of transport airplanes, and some key techniques for flying with throttles and making a survivable landing. Airplanes evaluated include the B-747, B-767, B-777, B-757, A320, and B-737 airplanes.

  5. Manual Throttles-Only Control Effectivity for Emergency Flight Control of Transport Aircraft

    Science.gov (United States)

    Stevens, Richard; Burcham, Frank W., Jr.

    2009-01-01

    If normal aircraft flight controls are lost, emergency flight control may be attempted using only the thrust of engines. Collective thrust is used to control flightpath, and differential thrust is used to control bank angle. One issue is whether a total loss of hydraulics (TLOH) leaves an airplane in a recoverable condition. Recoverability is a function of airspeed, altitude, flight phase, and configuration. If the airplane can be recovered, flight test and simulation results on several transport-class airplanes have shown that throttles-only control (TOC) is usually adequate to maintain up-and-away flight, but executing a safe landing is very difficult. There are favorable aircraft configurations, and also techniques that will improve recoverability and control and increase the chances of a survivable landing. The DHS and NASA have recently conducted a flight and simulator study to determine the effectivity of manual throttles-only control as a way to recover and safely land a range of transport airplanes. This paper discusses TLOH recoverability as a function of conditions, and TOC landability results for a range of transport airplanes, and some key techniques for flying with throttles and making a survivable landing. Airplanes evaluated include the B-747, B-767, B-777, B-757, A320, and B-737 airplanes.

  6. 螺桨飞机舱内噪声地面模拟及其主动控制%Ground-simulation of Propeller Induced Airplane Cabin Noise and Its Active Control

    Institute of Scientific and Technical Information of China (English)

    吴亚锋; 李江红; 戴杏珍

    2001-01-01

    This paper presents the analogized methods and the active controlexperiments of the cabin noise for a propeller airplane.In a Y7 test airplane,the cabin noise is analogized by an exciter to structure-borne noise and by a loudspeaker to air-borne noise.A multi-channel adaptive control system is developed and used to attenuate the analogized noise field and satisfied results are obtained in the controlled area.%本文介绍螺桨飞机舱内噪声的地面模拟方法和主动控制实验。在一架运七试验机上,激振器和扬声器分别被用来模拟由螺桨旋转在舱内引起的结构和气动噪声。一个多通道自适应控制系统被应用于该模拟声场的主动控制实验,并在控制区域取得了满意的降噪效果。

  7. 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...

  8. 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,...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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,...

  15. 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...

  16. 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...

  17. 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...

  18. 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...

  19. 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...

  20. 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...

  1. 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...

  2. 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...

  3. 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-...

  4. 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...

  5. 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,...

  6. 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...

  7. 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....

  8. 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....

  9. 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...

  10. 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:...

  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. 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;...

  13. 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....

  14. 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;...

  15. 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...

  16. 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...

  17. 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,...

  18. 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...

  19. 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.

  20. 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...

  1. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  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. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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.

  19. 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...

  20. 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...

  1. 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...

  2. 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

  3. 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...

  4. 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...

  5. 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...

  6. 78 FR 27010 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... necessary; and eventual rework of the flap track assembly and rear spar attachments. For certain airplanes... rework of the flap track assembly and rear spar attachments. The NPRM published in the Federal Register... data to support the rework requirements of paragraphs (s) and (t) of the NPRM (77 FR 61542, October...

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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,...

  17. 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...

  18. 78 FR 58982 - 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...). SUMMARY: We propose to supersede airworthiness directive (AD) 2013-07- 07, which applies to all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  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 3365 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-16

    ... 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 Airplanes... holidays. For service information identified in this proposed AD, contact Boeing Commercial...

  1. 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...

  2. 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...

  3. 77 FR 731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-01-06

    ...-256-AD; Amendment 39-16904; AD 2011-27-03] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... publications listed in the AD as of February 10, 2012. ADDRESSES: For Boeing service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707,...

  4. Nieuport-Delage Pursuit Airplane 48 C. 1. : "jockey" type

    Science.gov (United States)

    1927-01-01

    This is a light single-seat pursuit airplane with a tractor propeller actuated by a 12 cylinder V-type Hispano-Suiza engine giving 400 HP at 2000 R.P.M. This is a single winged aircraft capable of 273 km/h.

  5. 78 FR 60676 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-02

    ... reports of worn or incorrectly assembled latches on main deck escape slides installed on airplane doors... (78 FR 9346). The NPRM proposed to require determining if the latches on main deck escape slides... after the effective date of this AD: Determine if the latches in the main deck escape slide/rafts...

  6. 77 FR 61731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-11

    ..., evidence of electrical arcing, or arc-through of the conduit wall, and applicable corrective action; and... electrical arcing between the wiring and the surrounding conduit, which could result in arc-through of the... Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA...

  7. 78 FR 25374 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-01

    ... economic impact, positive or negative, on a substantial number of small entities under the criteria of the... AD was prompted by a report that certain airplanes might not have reinforcement straps installed on the center overhead stowage bins in the passenger compartment, and some installed reinforcement...

  8. 77 FR 63266 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-16

    ... not have a significant economic impact, positive or negative, on a substantial number of small..., reinforcement straps were not bonded to the center overhead stowage bins in the passenger compartment. For certain airplanes, this proposed AD would require performing an inspection of reinforcement straps...

  9. 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...

  10. 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...

  11. 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...

  12. 77 FR 60073 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-10-02

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Saab AB...

  13. 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...

  14. 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...

  15. 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...

  16. 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...

  17. 76 FR 69166 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2011-11-08

    ...-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD results... unsafe condition as: t was found that the * * * ADG GCU transformer primary winding can break due...

  18. 77 FR 24353 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-04-24

    ... requires replacing or relocating of certain circuit breaker panel (CBP) bus bars on certain airplanes, inspecting for any loose or improperly crimped lugs in certain electrical panel locations and replacement if... to the specified products. That NPRM was published in the Federal Register on October 26, 2011 (76...

  19. Airplane numerical simulation for the rapid prototyping process

    Science.gov (United States)

    Roysdon, Paul F.

    Airplane Numerical Simulation for the Rapid Prototyping Process is a comprehensive research investigation into the most up-to-date methods for airplane development and design. Uses of modern engineering software tools, like MatLab and Excel, are presented with examples of batch and optimization algorithms which combine the computing power of MatLab with robust aerodynamic tools like XFOIL and AVL. The resulting data is demonstrated in the development and use of a full non-linear six-degrees-of-freedom simulator. The applications for this numerical tool-box vary from un-manned aerial vehicles to first-order analysis of manned aircraft. A Blended-Wing-Body airplane is used for the analysis to demonstrate the flexibility of the code from classic wing-and-tail configurations to less common configurations like the blended-wing-body. This configuration has been shown to have superior aerodynamic performance -- in contrast to their classic wing-and-tube fuselage counterparts -- and have reduced sensitivity to aerodynamic flutter as well as potential for increased engine noise abatement. Of course without a classic tail elevator to damp the nose up pitching moment, and the vertical tail rudder to damp the yaw and possible rolling aerodynamics, the challenges in lateral roll and yaw stability, as well as pitching moment are not insignificant. This thesis work applies the tools necessary to perform the airplane development and optimization on a rapid basis, demonstrating the strength of this tool through examples and comparison of the results to similar airplane performance characteristics published in literature.

  20. 14 CFR 135.422 - Aging airplane inspections and records reviews for multiengine airplanes certificated with nine...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records... Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR CARRIERS... AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Maintenance,...

  1. 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.

  2. 基于模型的民机自动飞行功能分析与设计%The Model-Based Functional Analysis and Design for Auto Flight Control System on Commercial Airplane

    Institute of Scientific and Technical Information of China (English)

    方俊伟; 汤超; 张翔; 张磊; 谢陵

    2016-01-01

    This paper reports the model-based functional analysis and architecture design for the auto flight con-trol system on commercial aircraft. The system engineering process develops functional models that can define and validate the system functions. The functional flow is logically dynamic upon changes in operational states, human-machine interaction and external environment. Its static and dynamic characteristics are systematically studied in-cluding external actors, application cases, functional logics, interactive sequence and state shifting. The logical ar-chitecture and interfaces are also generated, and relevant requirements are allocated accordingly as development references of physical architecture and implementation design. The study examines availability and integrity of flight guidance, auto thrust, auto landing, crew warning and alerts functions and improves the design requirements.%描述了民用飞机自动飞行系统基于模型的功能分析与架构设计过程。该研究采用符合现代系统工程理念的模型化设计形式,表明和确认系统功能在各种运行决策、人机交互和外部环境中的变化。它针对系统级功能静态、动态特性进行结构化分析和设计,系统性地研究外部对象、应用用例、功能逻辑、交联时序和状态跳转,在确认模型的合理性后生成逻辑架构与接口,将设计需求进行分配,用于设计实现和软硬件架构。该研究通过对飞行导引、自动推力、自动着陆、机组通告等功能的可用性和完整性进行分析检验,改进了功能需求设计。

  3. An integer programming for airplane rounting in the U.S. Center-TRACON

    Directory of Open Access Journals (Sweden)

    Srisawat Supsomboon

    2015-06-01

    Full Text Available Air travel has been a major transportation for commerce and tour in many countries. As the demand of air traffic has been increasing, air traffic management has confronted with poverty of handling the increase of the demand of runway facilities where congestion often takes place. In order to cope with such problems, runway efficiency enhancement or capacity increasing are taken into account. In air traffic management, the effective air space utilization and air control workload management can be improved by the use of many up-to-date technologies in forms of decision support tools. This study developed a computer-aided decision support model in the form of integer programming. The purpose of the model was to allocate airplanes arrival at U.S. Center-TRACON airspace to enter feeder gates and to design optimal routes along the track to runway. Results of optimal path of the airplanes throughout the TRACON air space system which yield a minimum delay were presented.

  4. 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.

  5. 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.

  6. 78 FR 66861 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-07

    ...); repetitively testing the elevator servo control loops, modifying the elevator servo controls, and repetitively... hydraulic leakage and failure of the servo-controls due to cracks in the end caps and along the barrel... an accelerated schedule of repetitive testing of the elevator servo control loops, and...

  7. 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...

  8. Correlation and assessment of structural airplane crash data with flight parameters at impact

    Science.gov (United States)

    Carden, H. D.

    1982-01-01

    Crash deceleration pulse data from a crash dynamics program on general aviation airplanes and from transport crash data were analyzed. Structural airplane crash data and flight parameters at impact were correlated. Uncoupled equations for the normal and longitudinal floor impulses in the cabin area of the airplane were derived, and analytical expressions for structural crushing during impact and horizontal slide out were also determined. Agreement was found between experimental and analytical data for general aviation and transport airplanes over a relatively wide range of impact parameter. Two possible applications of the impulse data are presented: a postcrash evaluation of crash test parameters and an assumed crash scenario.

  9. 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...

  10. 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...

  11. 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 ...

  12. 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.

  13. Headache associated with airplane travel: A rare entity

    Directory of Open Access Journals (Sweden)

    Ajith Cherian

    2013-01-01

    Full Text Available Airplane travel headache is rare and has recently been described as a new form of headache associated with a specific situation. Of the 1,208 patients with primary headaches attending a tertiary care neurology hospital, two (0.16% patients satisfied the criteria for headache related to airplane travel. Both the patients fulfilled the proposed diagnostic criteria for airplane travel headache. This unique headache had a mean duration of 24 minutes, localized to the medial supraorbital region described as having an intense jabbing or stabbing character that occurred exclusively and maximally during aircraft landing or take-off, following which pain intensity subsided . This rare headache felt on aircraft descent is probably due to the squeeze effect on the frontal sinus wall, when air trapped inside it contracts producing a negative pressure leading to mucosal edema, transudation and intense pain. Use of nasal decongestants either alone or in combination with naproxen sodium prior to ascent and descent abated the headache episodes. Awareness about this unique entity is essential to provide proper treatment and avoid patient suffering.

  14. A preliminary investigation of the use of throttles for emergency flight control

    Science.gov (United States)

    Burcham, F. W., Jr.; Fullerton, C. Gordon; Gilyard, Glenn B.; Wolf, Thomas D.; Stewart, James F.

    1991-01-01

    A preliminary investigation was conducted regarding the use of throttles for emergency flight control of a multiengine aircraft. Several airplanes including a light twin-engine piston-powered airplane, jet transports, and a high performance fighter were studied during flight and piloted simulations. Simulation studies used the B-720, B-727, MD-11, and F-15 aircraft. Flight studies used the Lear 24, Piper PA-30, and F-15 airplanes. Based on simulator and flight results, all the airplanes exhibited some control capability with throttles. With piloted simulators, landings using manual throttles-only control were extremely difficult. An augmented control system was developed that converts conventional pilot stick inputs into appropriate throttle commands. With the augmented system, the B-720 and F-15 simulations were evaluated and could be landed successfully. Flight and simulation data were compared for the F-15 airplane.

  15. 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....

  16. UWB EMI To Aircraft Radios: Field Evaluation on Operational Commercial Transport Airplanes. Volume 1

    Science.gov (United States)

    Oria, A. J. (Editor); Ely, Jay J.; Martin, Warren L.; Shaver, Timothy W.; Fuller, Gerald L.; Zimmerman, John; Fuschino, Robert L.; Larsen, William E.

    2005-01-01

    Ultrawideband (UWB) transmitters may soon be integrated into a wide variety of portable electronic devices (PEDs) that passengers routinely carry on board commercial airplanes. Airlines and the FAA will have difficulty controlling passenger use of UWB transmitters during flights with current airline policies and existing wireless product standards. The aeronautical community is concerned as to whether evolving FCC UWB rules are adequate to protect legacy and emerging aeronautical radio systems from electromagnetic interference (EMI) from emerging UWB products. To address these concerns, the NASA Office of Space Communications and Chief Spectrum Managers assembled a multidisciplinary team from NASA LaRC, NASA JPL, NASA ARC, FAA, United Airlines, Sky West Airlines, and Eagles Wings Inc. to carry out a comprehensive series of tests aimed at determining the nature and extent of any EMI to aeronautical communication and navigation systems from UWB devices meeting FCCapproved and proposed levels for unlicensed handheld transmitters.

  17. 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...

  18. 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-...

  19. 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-...

  20. 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...

  1. 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...

  2. 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...

  3. 76 FR 55293 - Special Conditions: Diamond Aircraft Industries, Model DA-40NG; Electronic Engine Control (EEC...

    Science.gov (United States)

    2011-09-07

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 23 Special Conditions: Diamond Aircraft Industries, Model DA-40NG; Electronic Engine Control (EEC) System AGENCY: Federal Aviation Administration (FAA), DOT... Diamond Aircraft Industries (DAI), model DA-40NG airplane. This airplane will have a novel or...

  4. 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...

  5. 78 FR 11978 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2013-02-21

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

  6. 77 FR 72252 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2012-12-05

    ... 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... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City,...

  7. 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...

  8. 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:...

  9. 14 CFR Appendix E to Part 125 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... propeller airplane) Stowed, In Transit, and Reverse (Discrete) 1 (per engine). Turbo-jet—2 discretes enable... (CONTINUED) AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM...

  10. 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,...

  11. 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...

  12. 77 FR 21404 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-04-10

    ..., would have provided valuable input on the civil operation and maintenance of the affected airplanes... revising the maintenance program would take 600 work hours per airplane. We have revised the Costs of... maintenance inspection program to include inspections that will give no less than the required damage...

  13. 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...

  14. 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...

  15. RESULTS OF AIRPLANE TU-204-300 OPERATED BY "VLADIVOSTOK AVIA" COMPANY FUEL FLOW MONITIRING

    Directory of Open Access Journals (Sweden)

    G. E. Maslennikova

    2014-01-01

    Full Text Available This article describes the results obtained from continuous monitoring of fuel flow on the airplanes Tu-204-300, operated by the aircompany "Vladivostok Avia". The reasons for the change in the cost of each copy of airplane and changes in fuel characteristics due to pilots manner of flying.

  16. 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...

  17. 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...

  18. 76 FR 17183 - Aviation Rulemaking Advisory Committee; Transport Airplane and Engine Issues-New Task

    Science.gov (United States)

    2011-03-28

    ... airplane hull loss. The National Transportation Safety Board (NTSB) found ``that the probable cause of this.... John's to Deer Lake, Newfoundland, with 36 passengers and 3 crew on board. During the climb-out from St. John's, the indicated airspeed gradually decreased to the point that the airplane entered...

  19. 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...

  20. 14 CFR Appendix D to Part 125 - 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 D Appendix D to Part 125 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Appendix D to Part 125—Airplane Flight Recorder Specification Parameters Range Accuracy sensor input...

  1. 14 CFR Appendix D 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 D Appendix D to Part 135 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION.... D Appendix D to Part 135—Airplane Flight Recorder Specification Parameters Range Accuracy...

  2. 75 FR 65052 - Consensus Standards, Standard Practice for Maintenance of Airplane Electrical Wiring Systems

    Science.gov (United States)

    2010-10-21

    ... Practice for Maintenance of Airplane Electrical Wiring Systems (Standard Practice) as an acceptable means... FAA finds the standards to be acceptable methods and procedures for maintenance of electrical wiring... Practice for Maintenance of Airplane Electrical Wiring Systems. FOR FURTHER INFORMATION CONTACT:...

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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...

  8. Proton exchange membrane fuel cells for electrical power generation on-board commercial airplanes.

    Energy Technology Data Exchange (ETDEWEB)

    Curgus, Dita Brigitte; Munoz-Ramos, Karina (Sandia National Laboratories, Albuquerque, NM); Pratt, Joseph William; Akhil, Abbas Ali (Sandia National Laboratories, Albuquerque, NM); Klebanoff, Leonard E.; Schenkman, Benjamin L. (Sandia National Laboratories, Albuquerque, NM)

    2011-05-01

    Deployed on a commercial airplane, proton exchange membrane fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today's technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.

  9. Proton Exchange Membrane Fuel Cells for Electrical Power Generation On-Board Commercial Airplanes

    Energy Technology Data Exchange (ETDEWEB)

    Pratt, Joesph W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Klebanoff, Leonard E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Munoz-Ramos, Karina [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Akhil, Abbas A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Curgus, Dita B. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Schenkman, Benjamin L. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2011-05-01

    Deployed on a commercial airplane, proton exchange membrane fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today’s technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.

  10. 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.

  11. 77 FR 24829 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-26

    ... the elevators to zero position, which could result in inducing a pitch down movement instead of a... condition leads to a movement of the elevators to the zero position, which induces a pitch down movement... resets occur during rotation at take off, a transient loss of elevator control associated with a...

  12. STATIC TESTS OF UNCONVENTIONAL PROPULSION UNITS FOR ULTRALIGHT AIRPLANES

    Directory of Open Access Journals (Sweden)

    Martin Helmich

    2014-06-01

    Full Text Available This paper presents static tests of a new unconventional propulsion unit for small aviation airplanes. Our laboratory stand – a fan drive demonstrator – enables us to compare various design options. We performed experiments to verify the propulsion functionality and a measurement procedure to determine the available thrust of the propulsion unit and its dependence on engine speed. The results used for subsequent optimization include the operating parameters of the propulsion unit, and the temperature and velocity fields in parts of the air duct.

  13. Ground-based and in-flight simulator studies of flight characteristics of a twin-fuselage passenger transport airplane during approach and landing

    Science.gov (United States)

    Grantham, W. D.; Smith, P. M.; Neely, W. R., Jr.; Deal, P. L.; Yenni, K. R.

    1985-01-01

    Six-degree-of-freedom ground-based and in-flight simulator studies were conducted to evaluate the low-speed flight characteristics of a twin-fuselage passenger transport airplane and to compare these characteristics with those of a large, single-fuselage (reference) transport configuration similar to the Lockheed C-5A airplane. The primary piloting task was the approach and landing task. The results of this study indicated that the twin-fuselage transport concept had acceptable but unsatisfactory longitudinal and lateral-directional low-speed flight characteristics, and that stability and control augmentation would be required in order to improve the handling qualities. Through the use of rate-command/attitude-hold augmentation in the pitch and roll axes, and the use of several turn coordination features, the handling qualities of the simulated transport were improved appreciably. The in-flight test results showed excellent agreement with those of the six-degree-of-freedom ground-based simulator handling qualities tests. As a result of the in-flight simulation study, a roll-control-induced normal-acceleration criterion was developed. The handling qualities of the augmented twin-fuselage passenger transport airplane exhibited an improvement over the handling characteristics of the reference (single-fuselage) transport.

  14. Engines-only flight control system

    Science.gov (United States)

    Burcham, Frank W. (Inventor); Gilyard, Glenn B (Inventor); Conley, Joseph L. (Inventor); Stewart, James F. (Inventor); Fullerton, Charles G. (Inventor)

    1994-01-01

    A backup flight control system for controlling the flightpath of a multi-engine airplane using the main drive engines is introduced. The backup flight control system comprises an input device for generating a control command indicative of a desired flightpath, a feedback sensor for generating a feedback signal indicative of at least one of pitch rate, pitch attitude, roll rate and roll attitude, and a control device for changing the output power of at least one of the main drive engines on each side of the airplane in response to the control command and the feedback signal.

  15. Study of belly-flaps to enhance lift and pitching moment coefficient of a Blended-Wing-Body airplane in landing and takeoff configuration

    Science.gov (United States)

    Staelens, Yann Daniel

    During the first century of flight few major changes have been made to the configuration of subsonic airplanes. A distinct fuselage with wings, a tail, engines and a landing gear persists as the dominant arrangement. During WWII some companies developed tailless all-wing airplanes. However the concept failed to advance till the late 80's when the B-2, the only flying wing to enter production to date, illustrated its benefits at least for a stealth platform. The advent of the Blended-Wing-Body (BWB) addresses the historical shortcomings of all-wing designs, specifically poor volume utility and excess wetted area as a result. The BWB is now poised to become the new standard for large subsonic airplanes. Major aerospace companies are studying the concept for next generation of passenger airplanes. But there are still challenges. One is the BWB's short control lever-arm pitch. This affects rotation and go-around performances. This study presents a possible solution by using a novel type of control surface, a belly-flap, on the under side of the wing to enhance its lift and pitching moment coefficient during landing, go-around and takeoff. Increases of up to 30% in lift-off CL and 8% in positive pitching moment have been achieved during wind tunnel tests on a generic BWB-model with a belly-flap. These aerodynamic improvements when used in a mathematical simulation of landing, go-around and takeoff procedure were showing reduction in landing-field-length by up to 22%, in takeoff-field-length by up to 8% and in loss in altitude between initiation of rotation and actual rotation during go-around by up to 21.5%.

  16. An Accurate Method for Measuring Airplane-Borne Conformal Antenna's Radar Cross Section

    Science.gov (United States)

    Guo, Shuxia; Zhang, Lei; Wang, Yafeng; Hu, Chufeng

    2016-09-01

    The airplane-borne conformal antenna attaches itself tightly with the airplane skin, so the conventional measurement method cannot determine the contribution of the airplane-borne conformal antenna to its radar cross section (RCS). This paper uses the 2D microwave imaging to isolate and extract the distribution of the reflectivity of the airplane-borne conformal antenna. It obtains the 2D spatial spectra of the conformal antenna through the wave spectral transform between the 2D spatial image and the 2D spatial spectrum. After the interpolation from the rectangular coordinate domain to the polar coordinate domain, the spectral domain data for the variation of the scatter of the conformal antenna with frequency and angle is obtained. The experimental results show that the measurement method proposed in this paper greatly enhances the airplane-borne conformal antenna's RCS measurement accuracy, essentially eliminates the influences caused by the airplane skin and more accurately reveals the airplane-borne conformal antenna's RCS scatter properties.

  17. 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.

  18. Wind-tunnel/flight correlation study of aerodynamic characteristics of a large flexible supersonic cruise airplane (XB-70-1). 3: A comparison between characteristics predicted from wind-tunnel measurements and those measured in flight

    Science.gov (United States)

    Arnaiz, H. H.; Peterson, J. B., Jr.; Daugherty, J. C.

    1980-01-01

    A program was undertaken by NASA to evaluate the accuracy of a method for predicting the aerodynamic characteristics of large supersonic cruise airplanes. This program compared predicted and flight-measured lift, drag, angle of attack, and control surface deflection for the XB-70-1 airplane for 14 flight conditions with a Mach number range from 0.76 to 2.56. The predictions were derived from the wind-tunnel test data of a 0.03-scale model of the XB-70-1 airplane fabricated to represent the aeroelastically deformed shape at a 2.5 Mach number cruise condition. Corrections for shape variations at the other Mach numbers were included in the prediction. For most cases, differences between predicted and measured values were within the accuracy of the comparison. However, there were significant differences at transonic Mach numbers. At a Mach number of 1.06 differences were as large as 27 percent in the drag coefficients and 20 deg in the elevator deflections. A brief analysis indicated that a significant part of the difference between drag coefficients was due to the incorrect prediction of the control surface deflection required to trim the airplane.

  19. An approach to the synthesis of separate surface automatic flight control systems.

    Science.gov (United States)

    Roskam, J.; Henry, S.

    1973-01-01

    A method is presented for the analysis of separate surface automatic flight control systems. The feasibility of such systems is demonstrated by the analysis of an example system, a separate surface wing-leveler for a Cessna 172. This example system employs a separate surface aileron with 15% of the basic airplane roll control power. A 90% reduction in bank-angle gust response can be obtained when compared with the basic airplane. The system does not feed back to the pilot's wheel. When failed (even hardover) the pilot retains more than adequate control of the airplane.

  20. 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.

  1. 14 CFR 25.395 - Control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Control system. 25.395 Section 25.395... STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Control Surface and System Loads § 25.395 Control system. (a) Longitudinal, lateral, directional, and drag control system and their supporting structures...

  2. 14 CFR 25.1143 - Engine controls.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Engine controls. 25.1143 Section 25.1143... STANDARDS: TRANSPORT CATEGORY AIRPLANES Powerplant Powerplant Controls and Accessories § 25.1143 Engine controls. (a) There must be a separate power or thrust control for each engine. (b) Power and...

  3. 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.

  4. Assessing V and V Processes for Automation with Respect to Vulnerabilities to Loss of Airplane State Awareness

    Science.gov (United States)

    Whitlow, Stephen; Wilkinson, Chris; Hamblin, Chris

    2014-01-01

    Automation has contributed substantially to the sustained improvement of aviation safety by minimizing the physical workload of the pilot and increasing operational efficiency. Nevertheless, in complex and highly automated aircraft, automation also has unintended consequences. As systems become more complex and the authority and autonomy (A&A) of the automation increases, human operators become relegated to the role of a system supervisor or administrator, a passive role not conducive to maintaining engagement and airplane state awareness (ASA). The consequence is that flight crews can often come to over rely on the automation, become less engaged in the human-machine interaction, and lose awareness of the automation mode under which the aircraft is operating. Likewise, the complexity of the system and automation modes may lead to poor understanding of the interaction between a mode of automation and a particular system configuration or phase of flight. These and other examples of mode confusion often lead to mismanaging the aircraftâ€"TM"s energy state or the aircraft deviating from the intended flight path. This report examines methods for assessing whether, and how, operational constructs properly assign authority and autonomy in a safe and coordinated manner, with particular emphasis on assuring adequate airplane state awareness by the flight crew and air traffic controllers in off-nominal and/or complex situations.

  5. 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....

  6. 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...

  7. 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...

  8. The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

    Institute of Scientific and Technical Information of China (English)

    WANG Ding-jiang; TANG Zheng-jie; CHEN Ming-hua; GUO Bi-xin; Chen Yi-can; TANG Ying

    2004-01-01

    In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.

  9. 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...

  10. 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...

  11. 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...

  12. 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.

  13. “COANDA-1910” - the first jet propulsor for airplane

    Directory of Open Access Journals (Sweden)

    Romulus PETCU

    2010-12-01

    Full Text Available This paper contains the authors’ research regarding the first airplane equippedwith a jet propulsion system made by Henri Coanda in 1910, also being homage pays toHenri Coanda, his inventor.

  14. Flutter clearance of the horizontal tail of the Bellanca Skyrocket II airplane

    Science.gov (United States)

    Ricketts, R. H.; Cazier, F. W., Jr.; Farmer, M. G.

    1982-01-01

    The Skyrocket II is an all composite constructed experimental prototype airplane. A flutter clearance program was conducted on the horizontal tail so that the airplane could be safely flown to acquire natural laminar flow aerodynamic data. Ground vibration test data were used in a lifting surface flutter analysis to predict symmetric and antisymmetric flutter boundaries. Subcritical response data which were acquired during flight tests are compared with the analytical results. The final flutter clearance placard speed was based on flight test data.

  15. Measurement of visibility from the pilot's cockpit on different airplane types

    Science.gov (United States)

    Kurz, Gerhard

    1931-01-01

    A process for the measurement of the visibility of airplanes from the pilot's cockpit is developed. The apparatus necessary for the measurements was suitably constructed and measurements of the fields of vision were made with it. The visibilities of six airplanes of different types of construction and use were measured, as well as the visibility of an automobile for comparison. An attempt was made to establish minimum visibility requirements and to express the excellence of visibility by means of a numerical coefficient.

  16. Traian Vuia – the Romanian inventor who first flew a powered airplane in 1906

    Directory of Open Access Journals (Sweden)

    Liviu FILIMON

    2011-09-01

    Full Text Available As observed the beginning of heavier than air devices started with Wright Brothers who flew in 1903 the first catapulted airplane equipped with an engine, similar to present motor gliders. In March 1906 took place the first flight of Vuia’s monoplane using on board installations. Since then a real competition between manufacturers has started to improve their airplanes as they become more efficient. Traian Vuia’s first flights and his beginnings are explained below.

  17. 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.

  18. Analog-Computer Investigation of Effects of Friction and Preload on the Dynamic Longitudinal Characteristics of a Pilot-Airplane Combination

    Science.gov (United States)

    Crane, Harold L.

    1961-01-01

    With an electric analog computer, an investigation has been made of the effects of control frictions and preloads on the transient longitudinal response of a fighter airplane during abrupt small attitude corrections. The simulation included the airplane dynamics, powered control system, feel system, and a simple linearized pseudopilot. Control frictions at the stick pivot and at the servo valve as well as preloads of the stick and valve were considered individually and in combinations. It is believed that the results which are presented in the form of time histories and vector diagrams present a more detailed illustration of the effects of stray forces and compensating forces in the longitudinal control system than has previously been available. Consistent with the results of previous studies, the present results show that any of these four friction and preload forces caused some deterioration of the response. However, even a small amount of valve friction caused an oscillatory pitching response during which the phasing of the valve friction was such that it caused energy to be fed into the pitching oscillation of the air-plane. Of the other friction and preload forces which were considered, it was found that stick preload was close to 180 deg. out of phase with valve friction and thus could compensate in large measure for valve friction as long as the cycling of the stick encompassed the trim point. Either stick friction or valve preload provided a smaller stabilizing effect primarily through a reduction in the amplitude of the resultant force vector acting on the control system. Some data were obtained on the effects of friction when the damping or inertia of the control system or the pilot lag was varied.

  19. 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.

  20. Simulation Study of Flap Effects on a Commercial Transport Airplane in Upset Conditions

    Science.gov (United States)

    Cunningham, Kevin; Foster, John V.; Shah, Gautam H.; Stewart, Eric C.; Ventura, Robin N.; Rivers, Robert A.; Wilborn, James E.; Gato, William

    2005-01-01

    As part of NASA's Aviation Safety and Security Program, a simulation study of a twinjet transport airplane crew training simulation was conducted to address fidelity for upset or loss of control conditions and to study the effect of flap configuration in those regimes. Piloted and desktop simulations were used to compare the baseline crew training simulation model with an enhanced aerodynamic model that was developed for high-angle-of-attack conditions. These studies were conducted with various flap configurations and addressed the approach-to-stall, stall, and post-stall flight regimes. The enhanced simulation model showed that flap configuration had a significant effect on the character of departures that occurred during post-stall flight. Preliminary comparisons with flight test data indicate that the enhanced model is a significant improvement over the baseline. Some of the unrepresentative characteristics that are predicted by the baseline crew training simulation for flight in the post-stall regime have been identified. This paper presents preliminary results of this simulation study and discusses key issues regarding predicted flight dynamics characteristics during extreme upset and loss-of-control flight conditions with different flap configurations.

  1. 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.

  2. Strategies for Industrial Multivariable Control

    DEFF Research Database (Denmark)

    Hangstrup, M.

    Multivariable control strategies well-suited for industrial applications are suggested. The strategies combine the practical advantages of conventional SISO control schemes and -technology with the potential of multivariable controllers. Special emphasis is put on parameter-varying systems whose...... dynamics and gains strongly depend upon one or more physical parameters characterizing the operating point. This class covers many industrial systems such as airplanes, ships, robots and process control systems. Power plant boilers are representatives for process control systems in general. The dynamics...

  3. 14 CFR 25.405 - Secondary control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Secondary control system. 25.405 Section 25... AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Control Surface and System Loads § 25.405 Secondary control system. Secondary controls, such as wheel brake, spoiler, and tab controls, must...

  4. 14 CFR 25.397 - Control system loads.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Control system loads. 25.397 Section 25.397... STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Control Surface and System Loads § 25.397 Control system...) and to be reacted at the attachment of the control system to the control surface horn. (b)...

  5. Analysis of in-flight acoustic data for a twin-engined turboprop airplane

    Science.gov (United States)

    Wilby, J. F.; Wilby, E. G.

    1988-01-01

    Acoustic measurements were made on the exterior and interior of a general aviation turboprop airplane during four flight tests. The test conditions were carefully controlled and repeated for each flight in order to determine data variability. For the first three flights the cabin was untreated and for the fourth flight the fuselage was treated with glass fiber batts. On the exterior, measured propeller harmonic sound pressure levels showed typical standard deviations of +1.4 dB, -2.3 dB, and turbulent boundary layer pressure levels, +1.2 dB, -1.6. Propeller harmonic levels in the cabin showed greater variability, with typical standard deviations of +2.0 dB, -4.2 dB. When interior sound pressure levels from different flights with different cabin treatments were used to evaluate insertion loss, the standard deviations were typically plus or minus 6.5 dB. This is due in part to the variability of the sound pressure level measurements, but probably is also influenced by changes in the model characteristics of the cabin. Recommendations are made for the planning and performance of future flight tests to measure interior noise of propeller-driven aircraft, either high-speed advanced turboprop or general aviation propellers.

  6. Preliminary study of a large span-distributed-load flying-wing cargo airplane concept

    Science.gov (United States)

    Jernell, L. S.

    1978-01-01

    An aircraft capable of transporting containerized cargo over intercontinental distances is analyzed. The specifications for payload weight, density, and dimensions in essence configure the wing and establish unusually low values of wing loading and aspect ratio. The structural weight comprises only about 18 percent of the design maximum gross weight. Although the geometric aspect ratio is 4.53, the winglet effect of the wing-tip-mounted vertical tails, increase the effective aspect ratio to approximately 7.9. Sufficient control power to handle the large rolling moment of inertia dictates a relatively high minimum approach velocity of 315 km/hr (170 knots). The airplane has acceptable spiral, Dutch roll, and roll-damping modes. A hardened stability augmentation system is required. The most significant noise source is that of the airframe. However, for both take-off and approach, the levels are below the FAR-36 limit of 108 db. The design mission fuel efficiency is approximately 50 percent greater than that of the most advanced, currently operational, large freighter aircraft. The direct operating cost is significantly lower than that of current freighters, the advantage increasing as fuel price increases.

  7. 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.

  8. Application of Monte Carlo Technique for Determining Maneuvering Loads from Statistical Information on Airplane Motions

    Science.gov (United States)

    Hamer, Harold A.; Mayer, John P.; Huston, Wilber B.

    1961-01-01

    Results of a statistical analysis of horizontal-tail loads on a fighter airplane are presented. The data were obtained from a number of operational training missions with flight at altitudes up to about 50,000 feet and at Mach numbers up to 1.22. The analysis was performed to determine the feasibility of calculating horizontal-tail load from data on the flight conditions and airplane motions. In the analysis the calculated loads are compared with the measured loads for the different types of missions performed. The loads were calculated by two methods: a direct approach and a Monte Carlo technique. The procedures used and some of the problems associated with the data analysis are discussed. frequencies of occurrence of tail loads of given magnitudes are derived from statistical information on the flight quantities. In the direct method, a time history of tail load is calculated from time-history measurements of the flight quantities. The Monte Carlo method could be useful for extending loads information for design of prospective airplanes . For the Monte Carlo method, the The results indicate that the accuracy of loads, regardless of the method used for calculation, is largely dependent on the knowledge of the pertinent airplane aerodynamic characteristics and center-of-gravity location. In addition, reliable Monte Carlo results require an adequate sample of statistical data and a knowledge of the more important statistical dependencies between the various flight conditions and airplane motions.

  9. Flight-measured lift and drag characteristics of a large, flexible, high supersonic cruise airplane

    Science.gov (United States)

    Arnaiz, H. H.

    1977-01-01

    Flight measurements of lift, drag, and angle of attack were obtained for the XB-70 airplane, a large, flexible, high supersonic cruise airplane. This airplane had a length of over 57 meters, a takeoff gross mass of over 226,800 kilograms, and a design cruise speed of Mach 3 at an altitude of 21,340 meters. The performance measurements were made at Mach numbers from 0.72 to 3.07 and altitudes from approximately 7620 meters to 21,340 meters. The measurements were made to provide data for evaluating the techniques presently being used to design and predict the performance of aircraft in this category. Such performance characteristics as drag polars, lift-curve slopes, and maximum lift-to-drag ratios were derived from the flight data. The base drag of the airplane, changes in airplane drag with changes in engine power setting at transonic speeds, and the magnitude of the drag components of the propulsion system are also discussed.

  10. Exploratory study of the effects of wing-leading-edge modifications on the stall/spin behavior of a light general aviation airplane

    Science.gov (United States)

    1979-01-01

    Configurations with full-span and segmented leading-edge flaps and full-span and segmented leading-edge droop were tested. Studies were conducted with wind-tunnel models, with an outdoor radio-controlled model, and with a full-scale airplane. Results show that wing-leading-edge modifications can produce large effects on stall/spin characteristics, particularly on spin resistance. One outboard wing-leading-edge modification tested significantly improved lateral stability at stall, spin resistance, and developed spin characteristics.

  11. 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...

  12. 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...

  13. 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...

  14. 14 CFR 125.333 - Stowage of food, beverage, and passenger service equipment during airplane movement on the...

    Science.gov (United States)

    2010-01-01

    ... food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Stowage of food, beverage, and passenger... certificate holder may move an airplane on the surface, take off, or land unless each food and beverage tray...

  15. 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...

  16. 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...

  17. 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....

  18. 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...

  19. Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator

    Directory of Open Access Journals (Sweden)

    Cezary Galinski

    2017-05-01

    Full Text Available One of the airplane design concepts that potentially allows for significantly increased efficiency, but has not yet been investigated thoroughly, is the inverted joined wing configuration, where the upper wing is positioned in front of the lower one. We performed wind tunnel and flight testing of a demonstrator of this concept, first by applying electrical propulsion to simplify wind tunnel testing, and then the same electrical-propulsion demonstrator performed several flights. As the chosen propulsion method proved to be too cumbersome for an intensive flight campaign and significant loss of battery performance was also observed, the electrical propulsion was then replaced by internal combustion propulsion in the second phase, involving longer-duration flight testing. Next we identified and analyzed two potentially beneficial modifications to the design tested: one involved shifting the center of gravity towards the aft, the other involved modifying the thrust vector position, both with the assumption that electric motors can be applied for propulsion. On this basis, the paper finishes with some conclusions concerning a new concept of electrical propulsion for an inverted joined wing design, combining two ideas: hybridization and distribution along the aft wing leading edge.

  20. [The airplane accident in Torghatten on May 6, 1988].

    Science.gov (United States)

    Solheim, T; Stene-Johansen, W; Lorentsen, M; Sakshaug, O

    1989-01-01

    On May 6th, 1988, a Dash 7 airplane crashed into the mountain of Torghatten, near Brønnøy-sund in northern Norway. All 33 passengers and the three crew members were killed. The National Identification Commission, including a forensic dentist, was at the disaster site twelve hours later. A dentist and a forensic pathologist worked with the police at the site until all the victims had been found. Three other dentists were responsible for collecting antemortem material and for the postmortem examination of all victims. 32 of the victims, or 89%, could be identified by dental means alone; a higher percentage than ever before reported. The final meeting of the Identification Commission took place five days after the disaster. All the victims were identified on the basis of technical, medical, and dental evidence, and the report signed by each of the three specialist groups. The quality of the dental records was evaluated with respect to requirements set up by the Ministry of Social Affairs in 1983. Dental records had improved since the "Alexander Kielland" disaster in 1980. However, only five of the missing persons had full mouth intraoral radiography, only nine records met the requirements for general information about the patient (birth date and identification number, home and business address, etc), only three had information about earlier diseases, and none had recorded previous dental restorations. Diagnoses were given only for nine persons. The records showed that 21 of the victims had not received any prophylactic treatment.

  1. 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.

  2. Research on the mechanical behaviour of an airplane component made by selective laser melting technology

    Directory of Open Access Journals (Sweden)

    Păcurar Răzvan

    2017-01-01

    Full Text Available The main objective of the presented research consists in the redesign of an airplane component to decrease its weight, without affecting the mechanical behaviour of the component, at the end. Femap NX Nastran and ANSYS FEA programs were used for the shape optimization and for the estimation of the mechanical behaviour of a fixing clamp that was used to sustain the hydraulic pipes that are passing through an airplane fuselage, taking into consideration two types of raw materials – Ti6Al4V and AlSi12 powder from which this component could be manufactured by using the selective laser melting (SLM technology. Based on the obtained results, the airplane component was finally manufactured from titanium alloy using the SLM 250 HL equipment that is available at SLM Solutions GmbH company from Luebeck, in Germany.

  3. 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.

  4. 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.

  5. 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.

  6. 14 CFR 23.399 - Dual control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Dual control system. 23.399 Section 23.399... STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Structure Control Surface and System Loads § 23.399 Dual control system. (a) Each dual control system must be designed to withstand the...

  7. 14 CFR 23.405 - Secondary control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Secondary control system. 23.405 Section 23... AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Structure Control Surface and System Loads § 23.405 Secondary control system. Secondary controls, such as wheel brakes,...

  8. 14 CFR 25.399 - Dual control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Dual control system. 25.399 Section 25.399... STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Control Surface and System Loads § 25.399 Dual control system. (a) Each dual control system must be designed for the pilots operating in opposition,...

  9. 14 CFR 23.679 - Control system locks.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Control system locks. 23.679 Section 23.679... STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Design and Construction Control Systems § 23.679 Control system locks. If there is a device to lock the control system on the ground...

  10. 14 CFR 25.679 - Control system gust locks.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Control system gust locks. 25.679 Section... AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Design and Construction Control Systems § 25.679 Control system gust locks. (a) There must be a device to prevent damage to the control surfaces (including tabs...

  11. 14 CFR 25.685 - Control system details.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Control system details. 25.685 Section 25... AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Design and Construction Control Systems § 25.685 Control system details. (a) Each detail of each control system must be designed and installed to prevent jamming...

  12. 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.

  13. Design study of technology requirements for high performance single-propeller-driven business airplanes

    Science.gov (United States)

    Kohlman, D. L.; Hammer, J.

    1985-01-01

    Developments in aerodyamic, structural and propulsion technologies which influence the potential for significant improvements in performance and fuel efficiency of general aviation business airplanes are discussed. The advancements include such technolgies as natural laminar flow, composite materials, and advanced intermittent combustion engines. The design goal for this parameter design study is a range of 1300 nm at 300 knots true airspeed with a payload of 1200lbs at 35,000 ft cruise altitude. The individual and synergistic effects of various advanced technologies on the optimization of this class of high performance, single engine, propeller driven business airplanes are identified.

  14. A Hardware-in-the-Loop Simulator for Software Development for a Mars Airplane

    Science.gov (United States)

    Slagowski, Stefan E.; Vican, Justin E.; Kenney, P. Sean

    2007-01-01

    Draper Laboratory recently developed a Hardware-In-The-Loop Simulator (HILSIM) to provide a simulation of the Aerial Regional-scale Environmental Survey (ARES) airplane executing a mission in the Martian environment. The HILSIM was used to support risk mitigation activities under the Planetary Airplane Risk Reduction (PARR) program. PARR supported NASA Langley Research Center's (LaRC) ARES proposal efforts for the Mars Scout 2011 opportunity. The HILSIM software was a successful integration of two simulation frameworks, Draper's CSIM and NASA LaRC's Langley Standard Real-Time Simulation in C++ (LaSRS++).

  15. Organization for breakthrough. How skunkworks developed airplanes; Breakthrough no tameno kaihatsu soshiki. Rokkidosha skunkworks ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Masuda, K. [Civil Aircraft Engineering Service Co., Bellevue (United States)

    1998-07-05

    `Skunkworks` is stated to be a secret research institute or equipments for developing reformative products in the fields of aviation and aerospace. Skunkworks was established in 1943 by Lockheed Company to develop the first jet engine fighter. This team continued after that and successfully developed advanced airplanes. Skunkworks is now used as a pronoun of the development form of this kind. This paper introduces its organization, development form and results. Fourteen rules of Skunkworks are dealt with first. Then the developments of SR-71 supersonic reconnaissance planes and F-117 stealth fighters are described. Skunkworks has successfully developed advanced airplanes in a short time in secret. 3 refs., 2 figs.

  16. General aviation fuel quality control

    Science.gov (United States)

    Poitz, H.

    1983-01-01

    Quality control measures for aviation gasoline, and some of the differences between quality control on avgas and mogas are discussed. One thing to keep in mind is that with motor gasoline you can always pull off to the side of the road. It's not so easy to do in an airplane. Consequently, there are reasons for having the tight specifications and the tight quality control measures on avgas as compared to motor gasoline.

  17. 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.

  18. A Digital Program for Calculating the Interaction Between Flexible Structures, Unsteady Aerodynamics and Active Controls

    Science.gov (United States)

    Peele, E. L.; Adams, W. M., Jr.

    1979-01-01

    A computer program, ISAC, is described which calculates the stability and response of a flexible airplane equipped with active controls. The equations of motion relative to a fixed inertial coordinate system are formulated in terms of the airplane's rigid body motion and its unrestrained normal vibration modes. Unsteady aerodynamic forces are derived from a doublet lattice lifting surface theory. The theoretical basis for the program is briefly explained together with a description of input data and output results.

  19. Aerodynamic analysis on fly-at-zero of big airplane in field environment%野战环境下大型飞机超低空气动特性分析

    Institute of Scientific and Technical Information of China (English)

    陈杰; 马存宝; 许和勇

    2013-01-01

    According to the fly-at-zero of big airplane on unconventional condition such as field environment,the influences of ground effect on airplane' s aerodynamic parameters with forward or asymmetrical lateral obstacles on the ground were presented by CFD approach,including the longitudinal stability and lateral wing rock.The research results show that the uncertain obstacles on the ground will deteriorate the stability of big plane,and then cause the nodding or wing rock,this flight process will induce the airplane to touch the ground.In the end,the article presents the research idea for closed loop control approach for large airplane with conventional configuration in terms of modem flight control theory.%针对野战环境下的大型飞机超低空飞行,采用CFD方法对地面存在前向或横向不对称障碍物时地面效应对气动参数的影响进行了数值分析,包括纵向稳定性和侧向摇晃等问题.研究结果表明,野战等非常规飞行条件下,地面不确定障碍物会造成大型飞机稳定性变差,严重时可能出现纵向点头和横侧向摇晃现象,容易导致触地危险.最后,从现代飞行控制理论角度提出了对常规布局大型飞机进行闭环控制的研究思路.

  20. Applications of Lagrangian blending functions for grid generation around airplane geometries

    Science.gov (United States)

    Abolhassani, Jamshid S.; Sadrehaghighi, Ideen; Tiwari, Surendra N.; Smith, Robert E.

    1990-01-01

    A simple procedure has been developed and applied for the grid generation around an airplane geometry. This approach is based on a transfinite interpolation with Lagrangian interpolation for the blending functions. A monotonic rational quadratic spline interpolation has been employed for the grid distributions.

  1. Application of Lagrangian blending functions for grid generation around airplane geometries

    Science.gov (United States)

    Abolhassani, Jamshid S.; Sadrehaghighi, Ideen; Tiwari, Surendra N.

    1990-01-01

    A simple procedure was developed and applied for the grid generation around an airplane geometry. This approach is based on a transfinite interpolation with Lagrangian interpolation for the blending functions. A monotonic rational quadratic spline interpolation was employed for the grid distributions.

  2. 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...

  3. Analysis of VGH data from two types of four-engine airplanes in commercial cargo service

    Science.gov (United States)

    Healy, F. M.

    1972-01-01

    Data are presented for derived gust velocities and for incremental normal accelerations due to gusts, maneuvers, and landing impacts. The data were obtained from NASA VGH recorders installed on three four-engine cargo airplanes operated by three airlines. Continental United States and trans-Pacific routes were covered.

  4. 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...

  5. 78 FR 275 - Airworthiness Directives; REIMS Aviation S.A. Airplanes

    Science.gov (United States)

    2013-01-03

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

  6. 78 FR 19088 - Airworthiness Directives; REIMS AVIATION S.A. Airplanes

    Science.gov (United States)

    2013-03-29

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

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 77 FR 19148 - Special Conditions: Airbus, A350-900 Series Airplane; Crew Rest Compartments

    Science.gov (United States)

    2012-03-30

    ...-900 Series Airplane; Crew Rest Compartments AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... separate Crew Rest Compartments: a Flight Crew Rest Compartment (FCRC) intended to be occupied by flight crew members only, and a Cabin Crew Rest Compartment (CCRC) intended to be occupied by cabin crew...

  13. Brace for impact! A thesis on medical care following an airplane crash

    NARCIS (Netherlands)

    Postma, I.L.E.

    2014-01-01

    In this thesis the events and management of a mass casualty incident (MCI) of an airplane crash are studied from a medical point of view. The incident is broken down into areas that are applicable to other MCIs. it is believed that the detailed study of an exceptional event can provide vital informa

  14. 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...

  15. 14 CFR 135.393 - Large nontransport category airplanes: Landing limitations: Destination airports.

    Science.gov (United States)

    2010-01-01

    ...: Landing limitations: Destination airports. 135.393 Section 135.393 Aeronautics and Space FEDERAL AVIATION... category airplanes: Landing limitations: Destination airports. (a) No person operating a large nontransport... effective length of the most suitable runway at the destination airport; and (2) Is greater than the...

  16. 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...

  17. 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...

  18. 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...

  19. 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,...

  20. 14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.

    Science.gov (United States)

    2010-01-01

    ... limitations: Two engines inoperative. 121.193 Section 121.193 Aeronautics and Space FEDERAL AVIATION... Performance Operating Limitations § 121.193 Airplanes: Turbine engine powered: En route limitations: Two... § 121.197. (2) Its weight, according to the two-engine-inoperative, en route, net flight path data in...

  1. 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)....

  2. 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...

  3. 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...

  4. Teaching Lean Six Sigma within a Supply Chain Context: The Airplane Supply Chain Simulation

    Science.gov (United States)

    Ellis, Scott C.; Goldsby, Thomas J.; Bailey, Ana M.; Oh, Jae-Young

    2014-01-01

    Lean six sigma is a management methodology that firms can employ to achieve substantial improvement in supply chain performance. However, few pedagogical exercises facilitate students' use of a comprehensive set of lean six sigma principles within a supply chain context. We describe the Airplane Supply Chain Simulation that helps students…

  5. 75 FR 37311 - Airplane and Engine Certification Requirements in Supercooled Large Drop, Mixed Phase, and Ice...

    Science.gov (United States)

    2010-06-29

    ... certain transport category airplanes certified for flight in icing conditions and the icing airworthiness... charged with promoting safe flight of civil aircraft in air commerce by prescribing minimum standards... million annually) Costs Nominal cost PV cost Engine Cert Cost 7,936,000 6,931,610 Engine Capital Cost 6...

  6. 78 FR 77611 - Special Conditions: Airbus, A350-900 Series Airplane; High Speed Protection System

    Science.gov (United States)

    2013-12-24

    ... maximum diversion time. The A350-900, like Airbus A320, A330, A340 and A380 series aircraft, has a high... , are provided in the airplane flight manual, and the cockpit display of those reduced speeds, as well..., as well as its failure modes, failure indications and accompanying flight manual...

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

    NARCIS (Netherlands)

    Lucassen, M.P.

    2002-01-01

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

  10. A Conceptual Design and Analysis Method for Conventional and Unconventional Airplanes

    NARCIS (Netherlands)

    Elmendorp, R.J.M.; Vos, R.; La Rocca, G.

    2014-01-01

    A design method is presented that has been implemented in a software program to investigate the merits of conventional and unconventional transport airplanes. Design and analysis methods are implemented in a design tool capable of creating a conceptual design based on a set of toplevel requirements.

  11. 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...

  12. 78 FR 42898 - Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

    Science.gov (United States)

    2013-07-18

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

  13. 78 FR 65183 - Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

    Science.gov (United States)

    2013-10-31

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

  14. 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...

  15. 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...

  16. 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...

  17. 78 FR 1765 - Requirements for Chemical Oxygen Generators Installed on Transport Category Airplanes

    Science.gov (United States)

    2013-01-09

    ... unreasonable, method to overcome tamper-proof features. Nonetheless, where tamper resistance is the sole method... receives, without change, to http://www.regulations.gov , including any personal information the commenter... International Civil Aviation Organization (ICAO) adopted standards to address several key elements of airplane...

  18. 14 CFR 26.39 - Newly produced airplanes: Fuel tank flammability.

    Science.gov (United States)

    2010-01-01

    ... TRANSPORTATION AIRCRAFT CONTINUED AIRWORTHINESS AND SAFETY IMPROVEMENTS FOR TRANSPORT CATEGORY AIRPLANES Fuel...) that meet the requirements of 14 CFR 25.981 in effect on December 26, 2008. (1) The fuel tank is... tank exceeds a Fleet Average Flammability Exposure of 7 percent. (c) All other fuel tanks that...

  19. 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...

  20. 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...