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Match Document Document Title
7305285 Method and device for piloting an aircraft  
A piloting device may include a section for generating control orders for the control surfaces acting on the yaw movement of an aircraft. A central unit determines an instruction to rotate the...
7021587 Dual channel fail-safe system and method for adjusting aircraft trim  
A system for providing automatic trim control associated with a control surface in an aircraft that utilizes at least two sensors that must agree in direction before trim adjustment is made. Each...
6722616 Method of lift control of aircraft and system therefor  
The present invention is structured such that lift control apparatus such as flaps and flaperons operate in association with elevator operation performed by a pilot. Lift control conforming to...
6643568 System for automatically controlling lift-augmentation devices of an aircraft during take-off  
A system for automatically controlling lift augmentation devices of an aircraft, during a phase of take-off by the aircraft, includes a controllable actuator that shifts the lift-augmentation...
6439512 All-hydraulic powered horizontal stabilizer trim control surface position control system  
A control system utilizes hydraulic power only to control a fixed-wing aircraft horizontal stabilizer trim control surface with no electrical control devices except for a cockpit pilot/co-pilot...
6386485 Arrangement and method for regulating the steering force in a mechanical steering system for an aircraft  
The present invention relates to an arrangement and a method in a mechanical control system of an aircraft. From the cockpit of the aircraft control surfaces ( 1 ) of the aircraft can be acted upon...
6349900 Actuator system for aerospace controls and functions  
An actuator system ( 10, 100, 200 ) for use in an aircraft control or operating system, comprising a controller ( 12 ) operable in response to an input for generating a control signal, and an...
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...
6282466 Method of automated thrust-based roll guidance limiting  
An improvement to a method of automatic flight using a flight management system is provided. The flight management system includes a lateral navigation (LNAV) control mode in which the flight...
6276640 Device for assisting with retrimming an aircraft control  
A device for re-trimming a pilot control of an aircraft to keep a flight parameter at a reference value includes a first detection means for detecting the actual position of the pilot control, a...
6246929 Enhanced 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...
5935177 Pilot-induced oscillation detection and compensation apparatus and method  
The apparatus of this invention includes a pilot-induced oscillation (PIO) detector, a PIO compensator and a pilot input modifier. The PIO detector is coupled to receive aircraft state signal...
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...
5836546 Autopilot/flight director underspeed protection system  
An underspeed protection system for an aircraft under autopilot control selects a target speed based upon the greater of a minimum maneuver speed and a stick shaker speed. The system then compares...
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...
5719566 Method and apparatus for detecting dormant actuator failure  
The actuation system of the present invention is based upon sensing relatively small delta errors over relative short strokes as opposed to absolute travel error. An actuation system in accordance...
5692708 Method and apparatus for automatically trimming an airplane stabilizer  
A method and apparatus for managing the trim of an airplane stabilizer whose elevator is controlled by a highly augmented elevator control law is disclosed. The augmented portion of the elevator...
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...
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...
5510991 Configurable automatic piloting device for aerodynes  
An automatic piloting device for aerodynes uses at least one digital computer receiving information from a set of sensors, and controlling actuators acting on the flight control surfaces, the...
5465212 Helicopter integrated fire and flight control having a pre-launch and post-launch maneuver director  
An integrated fire and flight control (IFFC) system determines a ballistic firing solution based on the position of targets relative to a helicopter and also based on the type of weapons to be...
5465211 Control system for propeller driven aircraft  
A control system is provided which prevents a powerful, propeller driven, jet training aircraft from requiring corrective action to throttling and gyroscopic effects when the student wishes to fly...
5446666 Ground state-fly state transition control for unique-trim aircraft flight control system  
An aircraft control system for an unique-trim, model-following system includes a feedforward shaping function that provides quickening of pilot input, and an automatic trim function that...
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...
5286203 Simulating horizontal stabilizer trimming in an aircraft  
The present invention features a simulator apparatus and method for realistically simulating actual forces at the horizontal stabilizer trim controls of an aircraft. The invention features a...
5008825 Apparatus and methods for automatically maintaining aircraft track angle  
There is provided a controller for aiding a pilot to control an airplane's track over the ground. While the airplane is in the air, a lateral control subsystem is provided for automatically holding...
4825375 Apparatus and methods for apportioning commands between aircraft flight control surfaces  
A controller for apportioning high amplitude and low amplitude control signals between two aircraft control surfaces, such as for example, between an elevator and an associated movable horizontal...
4765572 System for controlling a mobile aerodynamic surface of an aircraft  
This invention relates to a system for controlling an aerodynamic surface mounted mobile on an aircraft so as to be able to pivot freely about a fixed axis and provided with a tab itself...
4758958 Method and apparatus for trimming and stabilizing an aircraft  
An aircraft, such as a helicopter, is trimmed into a desired position by ducing a trimming control signal during the maneuver for the desired positive and adjusting control forces in response to...
4684085 Aircraft automatic trim system  
An aircraft automatic trim system is operable during autopilot control to transfer trim from the elevators to the stabilizers. The thresholds for trim transfer are based on the ratio of elevator...
4676460 Longitudinal stability augmentation system and method  
The control system includes a schedule (54) which plots airspeed versus stabilizer angle for a trim condition. Following a pilot adjustment of the stabilizer angle to establish trim, the schedule...
4664346 Method and apparatus for stabilizing the steering force in an aircraft, especially a helicopter  
The steering or control force for operating a steering column in an aircraft, especially in a rotary wing aircraft, is stabilized. The steering column influences through an articulated steering or...
4626998 Heading reference trim system  
A heading trim reference system provides beep commands indicative of a desired heading/attitude change to the roll channel of an AFCS as roll commands at slow speed in a conventional manner, and to...
4598888 Fixed-wing aircraft with tandem supporting surfaces  
A fixed-wing aircraft with tandem lifting surfaces has monoplane main wings secured in an intermediate area of the fuselage and a horizontal tail surface with at least one stabilizer plane mounted...
4583030 Pitch/trim control  
Aircraft attitude along the pitch axis is controlled by inputting a velocity command to a pitch control subsystem that includes a velocity side channel and a gain side channel of a pitch servo...
4500967 Aircraft short-term roll attitude retention system  
An automatic flight control system, for an aircraft having a roll attitude retention outer loop actuator (29), a roll stability inner loop actuator (25) and a control stick (26) for positioning...
4477876 Dual response aircraft reference synchronization  
In an aircraft automatic flight control system having a reference parameter synchronizing system (70) operable in response to a trim release switch (44), an initial trim release period (139), on...
4477043 Biodynamic resistant control stick  
An improvement to an aircraft control stick is disclosed. Movement of an aircraft may generate a force which undesirably causes the aircraft pilot to deflect the aircraft's control stick, which...
4382283 Helicopter attitude and airspeed acquisition and retention system  
A helicopter pitch axis autopilot system, including airspeed hold at cruise speeds and pitch attitude hold below cruise speeds, includes integrated longitudinal acceleration drift corrected by...
4382282 Trim control system for reduced drag  
In an automatic flight control system of the type having automatic stabilizer trim control, the long term, constant altitude cruise trim threshold limits which alter the maximum and minimum...
4304375 Electrically controlled elevator  
A helicopter elevator (12, 13) is driven by an electrical actuator (20) to position the elevator (12, 13) to an optimum angle of incidence for given flight conditions. The actuator (20) is included...
4281811 Pitch trim system for aircraft  
An automatic pitch trim system responds to the output of a torque detector (34) to provide an input signal to a gain normalization circuit (36). A limiter (38) responds to the gain normalization...
4279391 Desensitizing helicopter control response to inadvertent pilot inputs  
A helicopter having an automatic flight control system including an inner, stability loop is rendered less sensitive to short-term, inadvertent pilot inputs by applying a washed-out derivative of a...
4236685 Steering mechanism with an active force feedback, especially for aircraft  
The present steering mechanism, especially for an aircraft includes a manly operable steering member and an automatic steering system. A difference signal formed from a pilot input and trim signal...
4220993 Engine throttle control system  
An engine auto throttle control system is disclosed wherein the stability of the high gain control loop is provided by means of complemented EPR feedback. Furthermore, the multi-engine auto...
4206891 Helicopter pedal feel force proportional to side slip  
The yaw channel of a helicopter, which includes a yaw servo having a yaw trim valve operable to automatically hold heading, and at cruise speeds alternatively operable to provide controlled yaw for...
4198017 Control augmentation system for flight vehicles  
A control augmentation system for stabilization and control of flight vehes, wherein control of vehicle angular velocities in proportion to control input is effected, and where stabilization of the...
4191347 Flap control circuitry  
An aircraft flap sensing and control circuit for sensing and controlling the position of the flaps and for sensing and comparing the instantaneous movement and position of the flaps mounted on...
4168045 Speed and collective pitch bias of helicopter longitudinal cyclic pitch  
A bias actuator, such as an extensible link, in the longitudinal cyclic pitch channel of a helicopter is provided with inputs as a function of airspeed multiplied inversely with collective pitch,...
4109886 Semi-automatic flight control system utilizing limited authority stabilization system  
A flight control system utilizing a limited authority stability augmentation system having a long term attitude and/or path control input to enhance the automatic flight capability of the stability...
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