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7616130 |
Method and a device for processing and displaying aircraft piloting information
A method is provided for assisting the piloting of a rotorcraft in which vertical speed variation (DVZ) of the rotorcraft is determined as a function of a horizontal speed variation (DVH) of the...
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7561067 |
Airspeed / wind speed measurement device for aircraft, and display device for same
A measurement system for an aircraft having the three-axis components of the airspeed of the aircraft, the three-axis components of the wind speed currently encountered by the aircraft, and the...
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7324016 |
Navigational indicating system for rotary wing aircraft
Red, green and white colored lights are emitted from navigation orientation indicating light emitting devices mounted within a helicopter rotor blade near its tip. The light emissions from such...
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7126496 |
Tactile cueing system and method for aiding a helicopter pilot in making landings
A tactile warning system for warning a helicopter pilot of a pre-selected altitude during a landing maneuver includes a collective control arm for control of the aircraft and a tactile warning...
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6737987 |
Method, apparatus and computer program product for helicopter tail strike warning
A method, apparatus and computer program product for alerting the pilot of a helicopter of a possible tail strike hazard.
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6608568 |
Device for generating a warning signal, especially for helicopters
The present invention relates to a warning device for indicating dangerous circumstances, especially for helicopters, having a signal receiving means for receiving and processing an operational...
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6400282 |
System for monitoring the operation of an aircraft, especially a helicopter
A system for monitoring the operation of an aircraft, especially a helicopter, includes data acquisition and processing components and display components which are able to display at least one...
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6295006 |
Flap angle measurement system for an active rotor control system
A flap angle measurement system is disclosed for a helicopter rotor blade. The blade includes a trailing edge and a flap hinged to at least a portion of the trailing edge about a pivot axis. The...
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6195598 |
Power margin indicator for a rotary-wing aircraft, especially a helicopter
A power margin indicator for a rotary-wing aircraft, intended to give information on the power margin available on at least one engine and one gearbox of the aircraft. The indicator includes: (a)...
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6067853 |
Device for reducing the vibration in the cabin of a rotary-wing aircraft, especially a helicopter
The present invention relates to a device for reducing the vibration in the cabin (2) of a rotary-wing aircraft, especially a helicopter (He). According to the invention, said device (1) comprises...
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6047596 |
Stress test rig for helicopter gear units
The stress test rig consists of a rigidly mounted part which contains the devices uniformly used for all types of test gears and an assembly truck (37) which holds the test gear (16) and the...
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5987397 |
Neural network system for estimation of helicopter gross weight and center of gravity location
The invention is directed to a helicopter health and usage monitoring system utilizing a neural network for estimating gross weight and center of gravity location from measured flight condition...
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5986580 |
Flight control indicator for aircraft
A flight control indicator for twin-engine aircraft, in particular a rotary-wing aircraft comprising two turboengines for driving at least one rotor, intended to provide the power margin available...
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5952570 |
Horizontal speed indicator for rotary-wing aircraft
A horizontal speed indicator for a rotary-wing aircraft includes first and second sensors for determining, respectively, the heading and the horizontal speed of the aircraft. The indicator...
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5924056 |
Device and method for measuring gravitation
Gravitation in three dimensions is measured using an accelerometer attached to a carrier, a satellite navigation receiver and a computer. The satellite navigation receiver determines a position and...
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5915273 |
Flight indicator for a helicopter
A flight indicator for an aircraft, intended to give the power margin available on at least one engine of the aircraft as a function of the flight conditions. The indicator includes sensors (2, 3,...
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5908485 |
Flight indicator with testing means for a helicopter
A flight indicator for an aircraft, intended to give the power margin available on at least one engine of the aircraft. The indicator includes sensors (2, 3, 4) capable of delivering data relating...
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5890101 |
Neural network based method for estimating helicopter low airspeed
The invention is directed to a system, utilizing a neural network, for estimating helicopter airspeed in the low airspeed flight range of below about 50 knots using only fixed system parameters as...
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5886649 |
Aircraft flight indicator
The present invention relates to an aircraft flight indicator intended to supply a data item regarding the power margin available on at least one engine of the aircraft as a function of the flight...
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5874673 |
Air speed and direction indicating system for rotary winged aircraft
An airspeed and direction indicating system for an aircraft of the rotary wing type includes a vertical accelerometer for monitoring the up and down movement of an outer portion or tip of the...
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5781126 |
Ground proximity warning system and methods for rotary wing aircraft
The present invention provides ground proximity warning system and method for aircraft, particularly rotary wing aircraft such as helicopters. The warning system generally includes a barometric...
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5750891 |
Method and apparatus for determining the airspeed of rotary wing aircraft
A method and apparatus for determining the airspeed of a rotary wing aircraft having a sustaining rotor with a plurality of radially extending rotor blades for rotation about a substantially...
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5738300 |
Helicopter autopilot providing airspeed control
The invention relates to novel basic architecture for helicopter autopilots, transforming the conventional objective of maintaining fuselage trim to an objective of maintaining airspeed, and...
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5693896 |
Test rig for rotors of gyrocraft
The rig comprises a vertical electric motor in a shell-type framework carrying a force balance itself supporting either a main rotor in dynamic tests or a complete propulsion assembly with main...
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5610845 |
Multi-parameter air data sensing technique
Static pressure sensing and free airstream temperature sensing is obviated in a method for determining aircraft velocity relative to an airmass by utilizing a static pressure and temperature...
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5381692 |
Bearing assembly monitoring system
A bearing assembly monitoring system provides continuous, real time monitoring of the operating condition of a powertrain support bearing assembly and real time alarm signals indicative of...
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5317915 |
Apparatus for the detection of the icing-up of the blades of an aircraft rotor
An apparatus for the detection of the icing-up of an aircraft rotor. The apparatus has a sensor (10) for the tractive force and a sensor (11) for torque; for measuring respectively the axial force...
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5315296 |
Cueing light configuration for aircraft navigation
A pattern of light is projected from multiple sources located on an aircraft to form two clusters. The pattern of each cluster changes as the aircraft flies above and below a predetermined nominal...
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5205710 |
Helicopter blade crack detection system
The invention is a helicopter blade crack detection system for blades that are hollow and pressurized or evacuated to a low pressure A rotating assembly having a rotating indicator assembly...
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5150117 |
Power management symbology display system
A power management symbology (PMS) display system for helicopters that provides a continually updated, combined analog/digital symbolic display of selected status information vis-a-vis the...
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5063777 |
Method and device for determining the speed of a helicopter with respect to the air
A method and device are disclosed for determining the airspeed of a helicoper, in which, for a plurality of flight configurations of a calibration flight, magnitudes for estimating the airspeed and...
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5012423 |
Back-up fly by wire control system
A device and method of back-up fly by wire control, especially useful in fly by wire systems when a failure mode is encountered. The problem of back-up system controllability with the type of...
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4980684 |
Warning system for tactical rotary wing aircraft
A warning system for rotary wing aircraft that monitors the altitude above ground of the aircraft and issues a warning when there is insufficient terrain clearance. The warning criteria are...
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4970651 |
Autonomous kinematic measurement system for helicopters
An autonomous kinematic measurement system for helicopters is disclosed. A helicopter comprises a lifting rotor, an anti-torque rotor, first means to control the cyclical pitch and the collective...
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4916445 |
Obstruction proximity indication system for an aircraft
Visually observable safe limits for the proximity of an aircraft, such as a helicopter, to obstructions are provided by pairs of lights which provide collimated beams intersecting at limit points...
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4893261 |
Apparatus and method for determining airspeed and direction
Aircraft speed and direction are determined by sampling the sinusoid-like pressure variations at the end of a rotor and performing a Fourier analysis on the pressure samples. Fourier quadrature...
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4870412 |
Warning device on an aircraft
A measuring device (1, 12, 13, 14) is equipped with a blade angle indicator (1) indicating the blade angle adjustment of the rotor blades of a helicopter, a pressure altimeter (13) and an outside...
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4849755 |
Night vision goggle compatible alarm
A visual alarm suitable for use with night vision goggles comprises a red incandescent lamp (105); a blue, green or blue-green electroluminscent panel (130); and control means to sequentially...
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4818992 |
Excessive altitude loss after take-off warning system for rotary wing aircraft
A warning system for rotary wing aircraft compares the accumulated altitude loss after take-off of the aircraft with its altitude above ground, and generates a warning if the altitude loss is...
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4794793 |
Method and apparatus for measuring the airspeed of a helicopter at low speed
A helicopter is provided with a lift rotor (Ros), a tail rotor (Rac), first control means for the longitudinal (Pcx) and lateral (Pcy) cyclic pitch of the lift rotor and second control means for...
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4780838 |
Helicopter weight and torque advisory system
A helicopter weight and torque advisory system for connection to cargo hook load sensors, fuel flow, air temperature and altitude indicating systems of a helicopter. The advisory system provides...
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4769645 |
Excessive pitch attitude warning system for rotary wing aircraft
A system for warning the pilot of a rotary wing aircraft such as a helicopter of a flight condition that, if left uncorrected, would result in the tail of the aircraft striking the ground monitors...
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4766767 |
Method for determining the horizontal airspeed of helicopters in higher speed ranges
A method for determining the horizontal airspeed of a helicopter in the high speed (v e >20 m/s) range. Pitch angle and the longitudinal control signals are recorded by sensors such as an...
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4763285 |
Helicopter low-g monitor, recorder and warning system
When helicopters are accomplishing certain special maneuvers such as powered descent, or the like involving low "g" conditions, the helicopter blades may teeter excessively with respect to the...
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4748569 |
Helicopter navigation and location system
The disclosure relates to a helicopter (5) having a flight path computer to provide signals for pilot or automatic flying in accordance with a predetermined flight path, a forward looking infra-red...
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4740899 |
Use of headwind and airspeed to achieve a transition to a hover in a helicopter or vtol aircraft
An improved system and technique is disclosed which enables an aircraft control system to bring an aircraft to hover with no direct measurement of ground speed. The system includes a device for...
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4736331 |
Helicopter power available to hover indicator
The power required for a helicopter to hover is generated (14, 82) as the ratio of current operating power in forward flight (12, 77) determined (10, 73) from data relating operating power in...
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4648269 |
Speed measuring device for a helicopter
The invention relates to the technical field of pilotage aids for helicopters. In a speed measuring device having two measuring devices for longitudinal speed and lateral speed of the helicopter,...
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4573351 |
Hub moment sensor for a horizontal rotor aircraft
A hub moment sensor is disclosed for an aircraft having a horizontal rotor, a rotor fixed mast for supporting the rotor above the aircraft body, and a support ring formed on the aircraft body for...
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4551723 |
Excessive descent rate warning system for rotary wing aircraft
A warning system for providing an aural warning to the pilot of a rotary wing aircraft monitors the altitude above ground and barometric descent rate of the aircraft and generates the warning if...
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