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| Number | Title | Issue Date |
| 7883059 | Actuator systems and associated methods for unmanned air vehicles and other applications Actuator systems and associated methods are disclosed herein. One aspect of the disclosure is directed toward an actuator system that includes a first structure and a second structure movable relative to the first structure. The system further includes an actuator a... | 02/08/2011 |
| 7338011 | Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. A... | 03/04/2008 |
| 7305286 | System and method for gyro enhanced vertical flight information A flight instrument and associated method where vertical speed information is combined with gyro information to produce gyro enhanced vertical speed information that is displayed to a pilot. The gyro information may include a pitch rate gyro and may include an azimu... | 12/04/2007 |
| 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 aircraft, based on control orders, and determines a global moment to be a... | 12/04/2007 |
| 7229046 | Servo mounting system for direct drive of an aircraft control surface This invention is a servo mounting system, which allows a servo with a rotating output shaft to directly power an aircraft control surface. A specially designed servo mount securely positions the servo with the central axis of its rotational output shaft on, and axi... | 06/12/2007 |
| 7165746 | Vibration motor primary flight control actuator The invention provides an actuator for a control surface (7), in particular for a primary flight control of an aircraft, the actuator including a main actuator (3) in a main control line (1) for actuating the control surface (7), the actu... | 01/23/2007 |
| 7098619 | Actuator and movement linkage system An actuator and movement linkage system for moving a load, such as a control surface of aircraft, in relation to a carrying structure includes an electric motor system, an actuator device connectable or connected to the load to move the load, the actuator device con... | 08/29/2006 |
| 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 sensor is provided with a separate an independent controller channel t... | 04/04/2006 |
| 6942057 | Feel control for active steering A method and apparatus for controlling the feel back torque of a motor provides for receiving a difference between a desired motor position and an actual motor position; filtering the difference into two or more frequency bands; and applying a gain to one or more of... | 09/13/2005 |
| 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 elevator operation by the pilot is performed. ... | 04/20/2004 |
| 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 devices, and a control unit for generating control demands to c... | 11/04/2003 |
| 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 initiated 3-position spring-centered toggle trim switch, a ba... | 08/27/2002 |
| 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 via the control system by means of at least one control ele... | 05/14/2002 |
| 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 electrical actuator (20) responsive to the control signal for opera... | 02/26/2002 |
| 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 to the invention, said device (1) additionally includes a sensor ... | 01/15/2002 |
| 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 management system provides roll commands via a flight director ... | 08/28/2001 |
| 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 calculation unit for determining the direction and magnitude... | 08/21/2001 |
| 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 provides an approach for one-to-one mapping between a targ... | 06/12/2001 |
| 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 including the aircraft's pitch, roll and yaw attitudes. The PIO... | 08/10/1999 |
| 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 speed values, a router for selecting either the air speed V1 o... | 01/26/1999 |
| 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 a monitored speed to the target speed to produce an error ... | 11/17/1998 |
| 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 attack. The trigger angle of attack is established with r... | 09/08/1998 |
| 5746392 | 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 a monitored speed to the target speed to produce an error ... | 05/05/1998 |
| 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 with the invention includes an actuator (30, 40, 50, 60, 7... | 02/17/1998 |
| 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 command ##EQU1## is evaluated(13) to determine if it is... | 12/02/1997 |
| 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 path referenced velocities are held constant during pilot... | 09/10/1996 |
| 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 stick. The signals from the strain gauges are used to control t... | 06/04/1996 |
| 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 computer comprising at least one autonomous computing module ha... | 04/23/1996 |
| 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 the aircraft in coordinated flight. The control system inc... | 11/07/1995 |
| 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 fired. An elevation command is determined based on the require... | 11/07/1995 |
| 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 accommodates return of the cockpit controller to an unique, centered... | 08/29/1995 |
| 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 to the store the input signal. Synchronizers are typically... | 04/05/1994 |
| 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 closed-loop, microprocessor-based programmable system with reduc... | 02/15/1994 |
| 5127608 | System for integrated pitch and thrust control of an aircraft According to the invention each of the pitch and thrust commands is a linear combination, inter alia, of the trim setting and of the speed setting, and the control provided by the aircraft joystick is pitch rate control. Protection may be provided with re... | 07/07/1992 |
| 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 the aircraft aligned with a desired track angle. Control ... | 04/16/1991 |
| 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 stabilizer. The signals are separated along a first path an... | 04/25/1989 |
| 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 articulated on the trailing edge of the aerodynamic surface, the sys... | 08/23/1988 |
| 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 the trimming control signal. The trimming control signal (Î... | 07/19/1988 |
| 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 demand to available elevator control. Trim commands are prod... | 08/04/1987 |
| 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 (54) plots the trim airspeed to obtain a stabilizer angle v... | 06/30/1987 |
