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Match Document Document Title
7148814 Methods and systems for displaying aircraft engine characteristics  
A method and system for displaying aircraft engine information. In one embodiment, the method includes directing the display of an icon that represents an overall operational state of an aircraft...
7088264 Flight safety system monitoring combinations of state values  
A method and system compares combinations of vehicle or aircraft state variables against known combinations of potentially dangerous states. Alarms and error messages are selectively generated...
7015829 Method for displaying flight information  
A method for displaying flight information includes displaying a first characteristic sign illustrating a speed vector of an aircraft. The method also includes determining a first longitudinal...
6985091 Electronic flight instrument displays  
The present invention is directed to novel primary flight displays, moving map displays and engine parameter displays for aircraft cockpits. These displays process data gathered from various...
6980128 Display system for an aircraft  
A display system for an aircraft includes a central unit configured to determine a speed vector of the aircraft and to determine a longitudinal margin of maneuver of the aircraft. The longitudinal...
6940427 Pitch alerting angle for enhanced ground proximity warning system (EGPWS)  
A ground proximity warning system including a pitch angle alerting device, the pitch angle alerting device including warning logic having an input that is structured to receive a signal that is...
6937166 Process and device for aiding the piloting of an aircraft  
The device ( 1 ) for aiding piloting comprises means ( 2 ) for determining a speed vector of the aircraft, means of depiction ( 4 ) for presenting on a display screen ( 6 ) a first characteristic...
6438484 Method and apparatus for detecting and compensating for compressor surge in a gas turbine using remote monitoring and diagnostics  
A method is disclosed for monitoring and controlling a compressor including (a) monitoring at least one compressor parameter; (b) storing data indicative of the monitored parameter in a database...
6289289 Aircraft structural fatigue monitor  
The present invention is a system for monitoring, storing, and reporting the accumulation of fatigue occurrences experienced by an aircraft. The system according to the present invention uses...
6236914 Stall and recovery control system  
An autopilot controller, for controlling a vehicle traveling in a fluid medium, designed for controlling the vehicle in any one of pre stall, stall and post stall regions. The autopilot controller...
6169496 Banked flight stall warning device and method  
A flight warning system comprises an outside temperature probe for sensing outside temperature, a gyroscope for sensing aircraft bank angle, a static transducer for sensing static pressure, and a...
6140942 Aircraft surface contamination sensing system using control surface hinge moment measurements  
A method and system for sensing surface contamination on an aircraft having a control surface. A control element including the control surface is connected to the aircraft by a hinge. The method...
6098010 Method and apparatus for predicting and stabilizing compressor stall  
A method and apparatus for predicting the onset of stall in an axial flow compressor and stabilizing stall so as to achieve the maximum pressure rise to the combustor. Stall in an axial flow...
6067032 Method of detecting stalls in a gas turbine engine  
The present invention provides a method of detecting an engine stall based on the intensity of ultraviolet light being sensed in the augmentor. The method is used to confirm a stall when the gas...
5986582 Helicopter rotor/engine warning system  
A two-stage alarm for a rotary wing aircraft, such as a helicopter which operates on a collective control arm. A moveable mass or weight is operatively connected to the collective control arm. The...
5912627 Device and method for indicating if an airplane is operating within operating limits  
The present invention provides a device for indicating an operating point of an aircraft comprising a sensor to measure air speed and a sensor to measure vertical acceleration. The device also...
5803408 Autopilot/flight director stall protection system  
In an aircraft under autopilot control, a stall protection system overrides established autopilot parameters in response to a monitored angle of attack for the aircraft exceeding a trigger angle of...
5595357 Aircraft stall warning system  
An aircraft stall warning system includes an angle of attack sensor which provides a signal to an angle of attack processor which provides an angle of attack signal to a display. An air pressure...
5341677 Method of aerodynamic stall-turbulence indication  
Method, apparatus, and sensor mast for airfoil aerodynamic performance monitoring are based on pressure measurement. Pressure transducers mounted within the sensor mast measure real-time pressure,...
5272906 Aircraft stall alarm testing tool  
An airplane stall alarm testing tool applies a temporary partial vacuum to a stall horn installed in an aircraft wing. The tool mechanically or otherwise creates a vacuum without human direct oral...
5057832 Audible glide speed indicator apparatus  
An audible indicator is arranged in combination with an electronic stall indicator, wherein the audible device includes a conical entrance and exit tube coaxially aligned with a central cylindrical...
4910513 Apparatus and methods for generating a stall warning margin on an aircraft attitude indicator display  
A pitch limit symbol is generated at an aircraft attitude indicator which provides a pilot with display of a stall warning angle of attack margin which is referenced to an airplane symbol on the...
4908619 Aircraft stall warning system  
A stall warning "stick shaker" reference level signal is produced as a function of both flap position and total aircraft thrust. More specifically, a correction term Δα is combined with a...
4893245 Windshear guidance for aircraft having inertial sensor  
An aircraft guidance system for flying an optimal inertial flight path in a windshear encounter. Zero inertial flight path angle command is utilized as the basis for guidance commands for either...
4749331 Method and apparatus of detecting pumping surges on turbocompressors  
To detect a surge in a turbocompressor, the temperature at the compressor intake, or the difference between temperatures measured at different distances from the compressor intake, is subjected to...
4649387 Method and apparatus for investigating airflow  
The airspeed over an external surface of the aircraft is sensed at a predetermined location spaced from the surface, signals are produced representative of average airspeed and of airspeed...
4618856 Stall surge detector  
In a pressure measuring system which includes a pressure transducer for generating an analogue signal as a function of pressure, circuitry for generating a non-linear error signal as a function of...
4610213 Pressure sensing on rigid sails  
Pressure tapping for rigid sails, the tappings (10, 11, 12, 15, 16) being located to either provide a stall warning or to enable tuning of the sailset to the desired operating angles. A particular...
4608860 Stall detector  
Compressor discharge pressure (CDP) in a gas turbine engine is sensed. A fall in CDP is interpreted as indicating compressor stall.
4590475 Stall avoidance system for aircraft  
An aircraft stall avoidance system uses flight measurements such as accelerations, aircraft configuration, engine power, atmospheric conditions, and other related characteristics in computing the...
4563684 Method of predicting the approaching stall of an aircraft wing  
The approaching stall of an aircraft wing is predicted using an inherent characteristic of the airflow as the stall is approached. The airspeed over the wing is sensed at a predetermined location...
4546353 Asymmetric thrust warning system for dual engine aircraft  
An asymmetric thrust warning system for an aircraft having two gas turbine engines. The compressor discharge pressures of the two engines are compared to determine the engine providing the lower...
4490791 Adaptive gas turbine acceleration control  
An acceleration schedule, from which data is derived for use in calculating fuel flow during acceleration of a gas turbine engine, is modified each time the engine surges so as to avoid future surges.
4227664 Stall current limiter for servo drive systems  
The invention provides improvements whereby the stall current of an actuator servo loop is limited without adversely affecting actuator speed or servo loop dynamics by supplying variable current...
4196472 Stall control apparatus for axial flow compressors  
A stall control system for axial flow compressors incorporating: a plurality of pressure transducers for developing signals indicative of the nonsteady pressure variations within the compressor and...
4083235 Compressor stall warning system  
A compressor stall warning system for jet aircraft gas turbine engines. The urbine inlet temperature and the compressor rotor speed are monitored and signals representative of the ratio of these...
4027839 High angle of attack aircraft control system utilizing a pseudo acceleration signal for control purposes  
The invention relates to a flight control system for an aircraft which maintains reliable control of the angle of attack (α) in those regions where rate of change of the lift coefficient (C L ) as...
3935558 Surge detector for turbine engines  
A pair of pressure transducers are connected to pressure probes positioned in a flow passage of a turbofan engine downstream of the fan and respond to pressure fluctuations which occur in the...
3872292 SONIC MEANS FOR DETECTING COMPRESSOR STALL  
A system for providing a warning signal when certain sensed turbine engine perating conditions, specifically certain measured noise levels, indicate a compressor stall is about to occur. A sensing...
3868625 SURGE INDICATOR FOR TURBINE ENGINES  
A pair of pressure transducers, one having a high response capability and the other a low response capability, are positioned in a turbofan or turbojet engine flow passage. The output from the high...
3867717 STALL WARNING SYSTEM FOR A GAS TURBINE ENGINE  
A stall warning system for a gas turbine engine precludes the possibility of an erroneous indication of compressor stall by simultaneously monitoring the air pressure at the discharge end of the...
3852958 STALL PROTECTOR SYSTEM FOR A GAS TURBINE ENGINE  
A stall protector system is provided for a gas turbine engine wherein the compressor pressure is measured, differentiated, and compared with a reference indicative of the maximum rate at which the...
3839699 AIRCRAFT STALL WARNING INDICATOR SYSTEM BASED ON RATE OF CHANGE OF ANGLE OF ATTACK  
A signal corresponding to the rate of change of the angle of attack of an aircraft is derived and is operatively summed with a signal corresponding to the actual angle of attack. The resulting...
3735340 STALL WARNING SYSTEM UTILIZING AN ELECTRONIC TIME DELAY  
Astall warning system for an aircraft including means for providing a signal indicating that the airflow at an airfoil on the aircraft is about at its stagnation point, means for providing a...
3686936 METHOD AND APPARATUS FOR DETECTING STALL BUFFET  
An aircraft instrument has been designed to indicate impending stall buffet. An angle of attack indicator is provided with a dial having two scales, one displaying angles of attack and the other...
3569926 FLIGHT PATH AND SPEED COMMAND DISPLAY  
An electro-optical aircraft flight instrument that accepts input signals representing angle of attack and pitch angle and used these signals to drive servo reticles which, together with a fixed...
3518621 AIRCRAFT STALL WARNING SYSTEM  
3426322 TURBOJET COMPRESSOR STALL WARNING INDICATOR  
3327972 Airplane instrument for furnishing a bias signal to offset the effects of forward components of gusts during landing approach  
3188861 Aircraft performance indicating apparatus  
Matches 1 - 50 out of 57 1 2 >