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Class Information
Number: 244/178
Name: Aeronautics > Aircraft control > Automatic > Electric course control > Multiple-axis altitude stabilization > Trim control
Description: System wherein the path of uniform flight is maintained by governing the position, or directing the movement, of auxiliary surfaces on airfoils, which auxiliary surfaces modify the sustaining or controlling characteristics of the airfoil.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8620492 Yaw damping system and method for aircraft Dec. 31, 2013
8606437 Flight control system mode and method providing aircraft speed control through the usage of momentary on-off control Dec. 10, 2013
8489257 Method and device for moveable tail trimming in an aircraft Jul. 16, 2013
8434712 Methods and apparatus for driving rotational elements of a vehicle May. 7, 2013
8376283 Device for switchable pilot control forces Feb. 19, 2013
8346409 Variable speed flap retraction and notification Jan. 1, 2013
7969110 Compensation actuator for a rotorcraft flight control Jun. 28, 2011
7883059 Actuator systems and associated methods for unmanned air vehicles and other applications Feb. 8, 2011
7702429 Electric flight control system for aircraft elevators Apr. 20, 2010
7305285 Method and device for piloting an aircraft Dec. 4, 2007
7021587 Dual channel fail-safe system and method for adjusting aircraft trim Apr. 4, 2006
6722616 Method of lift control of aircraft and system therefor Apr. 20, 2004
6643568 System for automatically controlling lift-augmentation devices of an aircraft during take-off Nov. 4, 2003
6439512 All-hydraulic powered horizontal stabilizer trim control surface position control system Aug. 27, 2002
6386485 Arrangement and method for regulating the steering force in a mechanical steering system for an aircraft May. 14, 2002
6349900 Actuator system for aerospace controls and functions Feb. 26, 2002
6338454 Aircraft flight control device Jan. 15, 2002
6282466 Method of automated thrust-based roll guidance limiting Aug. 28, 2001
6276640 Device for assisting with retrimming an aircraft control Aug. 21, 2001
6246929 Enhanced stall and recovery control system Jun. 12, 2001
5935177 Pilot-induced oscillation detection and compensation apparatus and method Aug. 10, 1999
5863012 Cyclic stick system giving a helicopter speed stability Jan. 26, 1999
5836546 Autopilot/flight director underspeed protection system Nov. 17, 1998
5803408 Autopilot/flight director stall protection system Sep. 8, 1998
5746392 Autopilot/flight director underspeed protection system May. 5, 1998
5719566 Method and apparatus for detecting dormant actuator failure Feb. 17, 1998
5692708 Method and apparatus for automatically trimming an airplane stabilizer Dec. 2, 1997
5553812 Inertial velocity command system Sep. 10, 1996
5522568 Position stick with automatic trim control Jun. 4, 1996
5510991 Configurable automatic piloting device for aerodynes Apr. 23, 1996
5465212 Helicopter integrated fire and flight control having a pre-launch and post-launch maneuver director Nov. 7, 1995
5465211 Control system for propeller driven aircraft Nov. 7, 1995
5446666 Ground state-fly state transition control for unique-trim aircraft flight control system Aug. 29, 1995
5301112 Transient free synchronizer for autopilot systems Apr. 5, 1994
5286203 Simulating horizontal stabilizer trimming in an aircraft Feb. 15, 1994
5127608 System for integrated pitch and thrust control of an aircraft Jul. 7, 1992
5008825 Apparatus and methods for automatically maintaining aircraft track angle Apr. 16, 1991
4825375 Apparatus and methods for apportioning commands between aircraft flight control surfaces Apr. 25, 1989
4765572 System for controlling a mobile aerodynamic surface of an aircraft Aug. 23, 1988
4758958 Method and apparatus for trimming and stabilizing an aircraft Jul. 19, 1988
4684085 Aircraft automatic trim system Aug. 4, 1987
4676460 Longitudinal stability augmentation system and method Jun. 30, 1987
4664346 Method and apparatus for stabilizing the steering force in an aircraft, especially a helicopter May. 12, 1987
4626998 Heading reference trim system Dec. 2, 1986
4598888 Fixed-wing aircraft with tandem supporting surfaces Jul. 8, 1986
4583030 Pitch/trim control Apr. 15, 1986
4500967 Aircraft short-term roll attitude retention system Feb. 19, 1985
4477043 Biodynamic resistant control stick Oct. 16, 1984
4477876 Dual response aircraft reference synchronization Oct. 16, 1984
4382283 Helicopter attitude and airspeed acquisition and retention system May. 3, 1983

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