Matches 1 - 50 out of 290 1 2 3 4 5 6 >
Match Document Document Title
7370836 Missile defense system and methods for evading heat seeking missiles  
A method for aiding a helicopter pilot to avoid a heat seeking missile includes the step of detecting a threat from a missile. The method also includes the step of reducing heat emanating from the...
7370829 Method and system for controlling helicopter vibrations  
A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a...
7367531 Systems and methods for evading heat seeking missles  
A method and system in an airborne aircraft to evade a heat seeking missile includes the steps of detecting the launch or “lock on” of a heat seeking missile and reducing the radiation from the...
7331235 Device for indicating a beat level  
A device for indicating a beat level L, the device including an analyzer which responds to a reference frequency Ω and a harmonic coefficient B to extract from an evaluation signal E a first...
7275711 Gas-powered tip-jet-driven compound VTOL aircraft  
A compound Vertical TakeOff and Landing (VTOL) aircraft. In a specific embodiment, the VTOL aircraft includes a gas-powered tip-jet driven rotary-wing and a fixed-wing that is capable of providing...
7264199 Unloaded lift offset rotor system for a helicopter  
A rotor system ( 12 ) for a helicopter ( 10 ) includes a rotating shaft ( 82 ). A gimbaled hub assembly ( 56 ) is coupled to the rotating shaft ( 82 ). Rotating blades ( 24 ) and non-rotating...
7195200 Unmanned helicopter, takeoff method of unmanned helicopter, and landing method of unmanned helicopter  
An unmanned helicopter includes an altitude control device for giving a command of a collective pitch blade angle based on an altitude change rate command, etc., and performing altitude control of...
7100866 Control system for a flying vehicle  
In one embodiment of the present invention there is described a vehicle having a propeller mechanism for propelling the vehicle in a horizontal direction. The vehicle includes a transmitter...
7083142 Compact co-axial rotor system for a rotary wing aircraft and a control system thereof  
A dual, counter rotating, coaxial rotor system provides an upper and lower rotor system, with a reduced axial rotor separation distance along a common axis by way of rotor tip position sensing and...
7068210 Low-cost position-adaptive UAV radar design with state-of-the-art cots technology  
A position-adaptive radar method and device for small UAV platforms capable of detecting “leakage signals” that, for example, propagate between two buildings or “leak through” penetrable...
7017857 Active vibration control system  
An active vibration control system including a sensor responsive to a source of vibration and which provides an output signal representative of the vibrations; at least one actuator positioned to...
7004426 Control system for rotorcraft for preventing the vortex ring state  
A flight control system for a rotorcraft to prevent the adverse effects of the vortex ring state is disclosed. In the flight control system of the present invention, selected control inputs are...
6917908 Method of pilot training using simulated engine failure  
The present invention relates to software for training an aircraft pilot to respond to the failure of one or more engines of a multi-engine aircraft during flight. The software simulates engine...
6793173 Automatic control device for a helicopter and automatic control system comprising such a device  
A device for the automatic control of a helicopter may include two objective algorithms associated with the collective axis, each of these algorithms automatically determining a command for...
6749152 Method and device for avoiding a collision of a rotating rotor blade of a rotary-wing aircraft with blade vortex  
A method for avoiding a collision of a rotating rotor blade of a rotary-wing aircraft with a blade vortex, and a device for executing the method. An aerodynamic parameter of the rotor blade of a...
6742742 Device and process for regulating the power of the engines of a rotary wing multi-engine aircraft  
Device and process for regulating the power of the engines of a rotary wing multi-engine aircraft. The regulating device ( 1 ) comprises, in addition to main regulating systems ( 2, 6 ) associated...
6735500 Method, system, and computer program product for tactile cueing flight control  
A system, a method, and a computer program product for determining tactile cueing of a flight control input apparatus includes an interface for receiving observed parameters relating to the flight...
6694228 Control system for remotely operated vehicles for operational payload employment  
A control system for a UAV includes control translations which maximize operational employment of the UAV payload. By determining spatial references, and then using the references to transform the...
6691950 Device and system for the automatic control of a helicopter  
Device and system for the automatic control of a helicopter. The automatic control device ( 6 ) comprises a vertical objective law (A) in respect of the pitching axis, which automatically...
6676074 Dual piston drag damper for rotary-wing aircraft rotor  
A drag damper for use on a rotary wing aircraft rotor comprises a body defining two variable volume chambers linked by a piston. The chambers are filled with fluid and are connected by a...
6648269 Trim augmentation system for a rotary wing aircraft  
The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic...
6616095 Coupled aircraft rotor system  
The subject tiltrotor aircraft has three modes of operation: airplane mode, helicopter mode, and transition mode. A tilting mast, which transitions the aircraft between airplane mode and helicopter...
6574572 Reducing vibration using QR decomposition and constrained optimization  
Determining adjustments for rotating blades includes measuring a plurality of vibration values corresponding to vibrations caused by the blades, providing coefficient of vibration data that...
6543719 Oscillating air jets for implementing blade variable twist, enhancing engine and blade efficiency, and reducing drag, vibration, download and ir signature  
A porous surface on an aircraft structure driven with oscillating positive and negative pressures is used as an active control device for attenuating negative aerodynamic interactions. The porous...
6530542 Rotary wing aircraft with electric pitch control  
Rotary wing aircraft with electric pitch control. According to the invention, each blade ( 5. i ) of the wing comprises a plurality of flaps ( 6. i ) which are able to control the pitch of said...
6505326 Analyzing thermal characteristics of geometries  
A system and method for analyzing a baseline geometry and, optionally, a modified geometry. The method can include generating a numerical representation of a baseline geometry having baseline...
6415206 Method for determining a minimal set of rotor blade adjustments  
A method for determining a minimal set of adjustments for the blades of a rotor supported by a supporting structure for reducing rotation-induced vibration in the supporting structure at at least...
6390412 Method and device for assisting the pilot in controlling the turboshaft power and/or rotor speed of heat-propelled helicopters  
Helicopter, device, and method of controlling helicopter using a computer, at least one motorized mechanical stop, and a collective pitch lever for controlling flight. The device includes a...
6371408 Helicopter tail rotor authority altitude compensator  
Apparatus and methods for automatically altering tail rotor authority on a helicopter based on ambient air pressure and temperature changes utilizing a sealed bellows which extends or retracts...
6338454 Aircraft flight control device  
The present invention relates to a flight control device for an aircraft comprising a control ( 2 ) and a means for actuating a controlled member (RP, RQ) to which a command is applied. According...
6322324 Helicopter in-flight rotor tracking system, method, and smart actuator therefor  
A system for quasi-statically correcting tracking of rotor blades of a helicopter rotor during operation includes a trim tab mounted on each rotor blade and deflectable relative to the rotor blade...
6311924 Device and process for reducing the vibration generated on the structure of a rotary-wing aircraft, particularly a helicopter  
The present invention relates to a device and to a process for reducing the vibration generated on the structure of a rotary-wing aircraft, particularly a helicopter, which comprises at least one...
6283406 Use of flow injection and extraction to control blade vortex interaction and high speed impulsive noise in helicopters  
An active control device for reducing high-speed impulsive ("HSI") and blade vortex interaction ("BVI") noise in a rotor aircraft, such as a helicopter, is disclosed. The system comprises a...
6229898 Active vibration control system using on-line system identification with enhanced noise reduction  
A system for enhancing vibration reduction in a vehicle that utilizes one or more sensors which sense ambient vibration in the vehicle and generate a signal corresponding to the sensed vibrations....
6227482 Gyroscope for remote-controlled helicopters  
A gyroscope suitable for a remote-controlled helicopter is provided that can improve the control characteristics to a disturbance factor such as wind as well as the response characteristics under...
6198991 Low-noise level landing apparatus and system for helicopters  
A low-noise level landing apparatus for helicopters comprises a helicopter position calculator for calculating the position of the helicopter, a data input device, an air data sensor for measuring...
6189836 Model-following control system using acceleration feedback  
A feedback system for reducing the effects of destabilizing forces in a vehicle (e.g. helicopter) by utilizing acceleration feedback data sensed by an acceleration sensor located in the vehicle....
6171056 Technique for providing a signal for controlling blade vortex interaction noise of a rotorcraft  
A technique for providing a signal representative of blade vortex interaction (BVI) noise for a multi-blade rotorcraft. The fluid (air) pressure at one, two, or more predetermined locations on a...
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...
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...
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...
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...
Matches 1 - 50 out of 290 1 2 3 4 5 6 >