Matches 51 - 100 out of 302 < 1 2 3 4 5 6 7 >
Match Document Document Title
6145428 Integrated fire and flight control system for controlling the angle of attack of a rotary wing aircraft  
An integrated fire and flight control system of the type which controls aircraft flight dynamics to referenced values defined by a weapon launch solution to provide optimum aircraft to target...
6142413 Device for control of an aerodynamic steering surface of a helicopter  
The present invention relates to a device for control of an aerodynamic steering surface (D) of a helicopter (He), which includes an anti-torque system intended to counteract the torque induced by...
6134485 System and method for measuring physical parameters using an integrated multisensor system  
A system and method for analyzing physical parameters of flight data at a plurality of discrete locations about a surface of an aircraft includes a multisensor system having an array of belts. Each...
6123291 Device for controlling an aerodynamic surface for balancing a helicopter in terms of pitch  
A device for controlling an aerodynamic surface (E) for balancing in terms of pitch a helicopter (He) including a main rotor (R1), the fore-and-aft cyclic pitch of which is controllable by a...
6092008 Flight event record system  
An in-flight event recording system for acquiring data related to an aircraft, its physical condition and functioning, its altitude, position and speed, direction of travel, and any unusual events....
6082968 Centrifugally activated variable damper assembly  
A centrifugally activated variable damper assembly for a stopped-rotor aircraft is disclosed for adjusting dampening level of teetering motions produced by the rotors during the in-flight...
6076024 Earth-referenced wind adjustment for hovering aircraft  
In a rotary wing aircraft, longitudinal groundspeed error and lateral groundspeed error are converted to earth coordinates, and the result scaled and integrated, and retransformed into aircraft...
6070829 Flight control system for rotary-wing aircraft, especially for a helicopter  
A flight control limiting system for a rotary-wing aircraft which generates servo-commands for at least one of a main rotor and a tail rotor. A set of first commands represents the position of at...
6059225 Flight control device for an aircraft, in particular a helicopter  
A flight control device for an aircraft is provided with a control unit OP and a plurality of N instruction generating systems, each of which generates a first command instruction for the control...
6059226 Navigation of helicopter with limited polar groundspeed commands  
The airspeed limiting performance envelope of a helicopter is converted to a groundspeed envelope by factoring-in the wind speed and direction. A groundspeed command for an unmanned helicopter is...
6029930 Method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter  
The monitoring method includes the steps of: acquiring a signal from an acceleration sensor; calculating a transform in the frequency domain of the signal to obtain a sequence of samples; acquiring...
6024324 Method of monitoring an epicyclic assembly of a vehicle equipped with acceleration sensors in particular a helicopter  
The monitoring method includes the steps of: acquiring a signal from an acceleration sensor associated with an epicyclic assembly; sampling the signal at a predetermined sampling frequency to...
6023668 Process and device for determining the flight configurations of an aircraft  
A process and system for determining the flight configurations of an aircraft are disclosed. The process includes the steps of defining various possible flight configurations of the aircraft,...
6019310 Method of monitoring on the basis of signal energy a transmission assembly of a vehicle equipped with acceleration sensors in particular a helicopter  
The method includes the steps of: acquiring a signal from an acceleration sensor; calculating the Fourier transform in the frequency domain of the signal to obtain a sequence of samples; acquiring...
5951608 Flight control system for jet powered tri-mode aircraft  
The disclosed flight control system includes a rotor blade speed monitor for monitoring the rotor blade speed of the jet powered tri-mode aircraft and for outputting a rotor blade speed command....
5948023 Monitoring and/or control system for a dual-engine helicopter for one engine inoperative flight operations  
A monitoring and control system for a dual-engine helicopter for OEI flight operations includes a parametric indicator operative in response to sensor signals for monitoring an engine gas generator...
5895012 Method and device for reducing the effect of the vibration generated by the driveline of a helicopter  
Method for reducing the effect of the vibration generated by the driveline of a helicopter. The helicopter includes at least one rotor, the collective pitch of the blades of which can be controlled...
5873546 System and method for conducting one engine inoperative flight procedures training in a dual-engine helicopter  
A system and method for conducting one engine inoperative (OEI) flight procedures training in a dual-engine helicopter includes a multi-function OEI training switch that is operative to initiate...
5863012 Cyclic stick system giving a helicopter speed stability  
A cyclic stick system for a helicopter or other aircraft includes memories for holding minimum and maximum speed values, a comparator for comparing an air speed V1 with the minimum and maximum...
5853144 Helicopter and method for reducing vibration of a helicopter fuselage  
A helicopter structure comprises a fuselage supporting or supported by a rotating system parts of the structure being capable of relative motion at an exciting frequency, there being a plurality of...
5850615 Rotor blade swashplate-axis rotation and gyroscopic moments componsator  
An apparatus for compensating for spatial phase angle phase errors in the flapping angle oscillations of a rotor blade is disclosed. The apparatus receives a measured aircraft roll and a measured...
5820071 Mechanical coupler/decoupler  
A coupler/decoupler is suitable for connecting one mechanical system to another and, upon application of sufficient force, resettably disengaging the first mechanical system from the second. In...
5816533 Method and device for reducing the vibration generated on the structure of a helicopter  
The present invention relates to a method and a device for reducing the vibration generated on the structure (14) of a helicopter (2) by the aerodynamic flow through the main rotor (3). According...
5813626 Suspension device for a transmission box of a rotary-wing aircraft  
The present invention relates to a suspension device for a transmission box (BT) of a rotary-wing aircraft, including bearing pieces (2) connected to the upper part (3) of the transmission box...
5752672 Remotely controllable actuating device  
An actuating device can change a position of an active member that remains in substantially the same position in the absence of a force of a predetermined magnitude on the active member. The...
5749540 System for controlling and automatically stabilizing the rotational motion of a rotary wing aircraft  
In a helicopter having a device for stabilizing yaw motion through the use of a tail rotor with a plurality of rotor blades extending radially from a hollow rotor shaft which is mounted for...
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...
5732905 System for minimizing the dynamic excitation of a helicopter  
System for minimizing the dynamic excitation at the center of gravity of the fuselage of a helicopter, this excitation being brought about by the forces transmitted between the main transmission...
5711651 Blade vortex interaction noise reduction techniques for a rotorcraft  
An active control device for reducing blade-vortex interactions (BVI) noise generated by a rotorcraft, such as a helicopter, comprises a trailing edge flap located near the tip of each of the...
5678786 Reconfigurable helicopter flight control system  
A failure of any one of three swashplate actuators of a helicopter rotor blade is detected. Once such a detection is made, the position of this nonfunctional swashplate is locked and measured. The...
5676334 Cyclic minimizer through alignment of the center of gravity and direction of flight vectors  
Apparatus and method for controlling an unmanned generally aerodynamically symmetric aircraft includes detecting the presence of misalignment between the horizontal component of the center of...
5617316 Maintaining attitude error constant in Euler singularity protection  
A model-following aircraft control system in which a roll rate command in Euler coordinates is integrated to provide a bank angle command, which has actual bank angle subtracted therefrom to...
5607122 Tail rotor authority control for a helicopter  
An apparatus for interconnection in a helicopter tail rotor control linkage for changing the pitch of the tail rotor blades in response to predetermined inputs is provided. The apparatus comprises...
5597138 Yaw control and stabilization system for helicopters  
A device for stabilizing yaw motion is provided for use on a helicopter having a main rotor rotatable about a main rotor axis, a power source, and a tail rotor boom with a longitudinal axis. The...
5553812 Inertial velocity command system  
A velocity command system is provided with a velocity stabilization mode wherein aircraft flight path referenced velocities are determined with respect to an inertial frame of reference, the flight...
5553817 Turn coordination inhibit for rotary wing aircraft control system  
A turn coordination inhibit system (150) inhibits a rotary winged aircraft control system from operating in an automatic turn coordination mode when a pilot desired to perform a sideslip maneuver,...
5522568 Position stick with automatic trim control  
Automatic trim control for a position stick. Strain gauges are mounted with respect to the position stick so as to generate signals proportional to the force manually exerted upon the control...
5428543 Vertical control system for rotary wing aircraft  
A vertical control system for a rotary winged aircraft receives inputs from a displacement collective stick and a sidearm controller. The system provides a set point for the vertical rate of change...
5409183 Helicopter with leading edge servo flaps for pitch positioning its rotor blades  
In a helicopter having a main rotor with blades controlled in pitch by servo flaps the servo flaps are arranged in advance of the leading edges of the blade to provide increased lift efficiency of...
5314147 Helicopter engine speed enhancement during heavy rotor load and rapid descent rate maneuvering  
A helicopter engine speed reference (66) is increased (117,118) in response to heavy rotor loading (102) in excess of a threshold at the current descent rate (FIG. 4 ). The reference speed is faded...
5305968 Device for automatically stabilizing the yaw motion of a helicopter  
In a helicopter having a tail rotor with a plurality of rotor blades extending radially from a hollow rotor shaft which is mounted for rotation about a transverse rotor axis, and having a push-pull...
5301112 Transient free synchronizer for autopilot systems  
A transient free synchronizer stores an input trim signal value on command, and provides an output signal value which transitions in a smooth, continuous manner, when the synchronizer is commanded...
5299759 Helicopter turn coordination and heading hold mode control  
A mode control (25) controls a helicopter flight control system (21) between a heading hold mode and a turn coordination mode according to switching patterns resembling the natural response of an...
5265825 Helicopter engine control having yaw input anticipation  
A helicopter engine fuel control anticipates sudden changes in engine power demand during yaw inputs to thereby minimize engine and main rotor speed droop and overspeed during yaw maneuvers. The...
5265826 Helicopter engine control having lateral cyclic pitch anticipation  
A helicopter engine fuel control anticipates changes in main rotor torque in response to lateral cyclic pitch commands, to thereby minimize engine and main rotor speed droop and overspeed during...
5255871 Helicopter having rotors equipped with flaps  
A helicopter comprises a pair of rotors each having a flap hinged to one of its edges, a seesaw rod swingably supported above the rotors, a pair of auxiliary wings fixed to opposite ends of the...
5252100 Variable rotor-blade-attack angle helicopter toy  
In a helicopter toy, a plurality of rotor blades are mounted to a flying body for rotation about a rotational axis and for angular movement about their respective pivotal axes extending...
5242130 Method and device for the reduction of the oscillations of a divergent nature of the fuselage of a helicopter  
Method and device for the reduction of the oscillations of a divergent nature induced in the fuselage (2) of a helicopter (1) by its rotary wings (3) when they are turning. According to the...
5238203 High speed turn coordination for rotary wing aircraft  
A helicopter flight control system (21) includes a model following control system architecture which automatically provides a coordinating yaw command signal to the helicopter tail rotor to...
5224664 Adaptive control system input limiting  
A control system, having an input command signal and driving a prime mover, is provided with variable magnitude and/or rate input signal limiting that is adjusted by maps 68,70,72,74 which set the...
Matches 51 - 100 out of 302 < 1 2 3 4 5 6 7 >