Class 244/226 - Fluid

Subclass of Class 244 - Aeronautics and astronautics
Definition: Apparatus comprising a fluid pressure device for transmitting
No. of patents: 36
Last issue date: 03/29/2011

Number	Title	Issue Date
7913955	Aircraft control surface drive system and associated methods A control surface drive system having a plurality of actuator assemblies are coupled to first and second supply lines and to a return line. The first and second supply lines are connected to a source of hydraulic fluid. At least one of the actuator assemblies has a ...	03/29/2011
7506842	Aircraft control surface drive system and associated methods A control surface drive system having a plurality of actuator assemblies are coupled to first and second supply lines and to a return line. The first and second supply lines are connected to a source of hydraulic fluid. At least one of the actuator assemblies has a ...	03/24/2009
7243881	Multi-function trailing edge devices and associated methods Trailing edge devices configured to carry out multiple functions, and associated methods of use and manufacture are disclosed. An external fluid flow body (e.g., an airfoil) configured in accordance with an embodiment of the invention includes a first portion and a ...	07/17/2007
7143983	Passive jet spoiler for yaw control of an aircraft A wing for an aircraft has a passive jet spoiler for providing yaw control by increasing drag on the wing. The spoiler comprises an inlet located near the leading edge of a lower surface of the wing and at least one outlet formed on the lower surface or on an upper ...	12/05/2006
7108231	Adjustment mechanism for a variable-shape wing Adjustment mechanism for adjustment area of variable-shape flow surface with two opposite skin surfaces includes plurality of whirl chambers swivelably arranged next to one another so that the whirl chambers are swivelable relative to one another, and the whirl cham...	09/19/2006
7059563	Systems, apparatuses, and methods for moving aircraft control surfaces Aircraft control surface operating systems and apparatuses, and associated methods of use. In one embodiment, an aircraft system includes an actuator operably coupled to a control surface in one-to-one correspondence. The actuator can include at least a first fluid ...	06/13/2006
7007897	Flight control actuation system A flight control actuation system comprises a controller, electromechanical actuator and a pneumatic actuator. During normal operation, only the electromechanical actuator is needed to operate a flight control surface. When the electromechanical actuator load level ...	03/07/2006
6685138	Augmenting flight control surface actuation system and method Apparatus for providing actuation power to an aircraft flight control surface. The apparatus includes a first actuator and a second actuator, where the second actuator has a bypass mode and an assist mode. The mode of the second actuator is determined by ...	02/03/2004
6651930	Process and control system for an aircraft control surface actuated by multiple hydraulic jacks and with modular power Control system for a control surface (100) of an aircraft comprising at least one actuator (102, 104) of the control surface, connected to a hydraulic circuit and equipped with at least two power jacks (110) capable of operating in at least one activated ...	11/25/2003
6625982	Electronically controlled hydraulic actuating system An electrically controlled hydraulic actuating system includes a servocontrol including a cylinder, a piston dividing the cylinder into two chambers each provided with a hydraulic connection port, a control valve connected to a hydraulic circuit. A two-wa...	09/30/2003
6391225	Phosphate ester hydraulic fluids with improved properties (law935) A functional fluid that is particularly useful as an aircraft hydraulic fluid is provided. The fluid contains a major amount of an organo/phosphate ester base stock; based on the total weight of the fluid of from about 0.5 to 10 wt % of certain alkoxylate...	05/21/2002
6298661	Energy efficient hydraulic motor control system An aircraft flap drive system utilized a variable displacement motor (15) having a fluid pressure actuated device (23) to vary the displacement of the motor. The system includes a displacement control valve (41), and an electrohydraulic control means (55,...	10/09/2001
6209825	Low power loss electro hydraulic actuator The system includes a hydraulic surface actuator for operating a piston coupled to a structural member of an aircraft for moving the structural member. An electrical feedback sensor is coupled to the actuator piston rod. A summing circuit for receiving a ...	04/03/2001
6206329	Process and device for the control of the rudder of an aircraft A device for the control of a control surface of an aircraft has at least two actuators (110, 112, 114), each having at least one electric control input (111a, 113a, 115a). At least one of the actuators (115), called the mixed actuator, also has a mechani...	03/27/2001
6076767	Flight control surface actuation system A flight control surface actuation system is provided in which a plurality of actuators (6-13) are connected to one another in order to synchronize their operation. Each actuator has its own gearbox such that the torque transmitted in the synchronizing el...	06/20/2000
5722616	Conical rotary actuator and its application to the control of a rudder A rotary actuator (16) has an inner body (32) forming a rotor and at least one outer body (34) forming a stator. The inner body (32) and outer body (34) carry blades (40,44) arranged in an alternating manner and defining between them two series of variabl...	03/03/1998
5351914	Hydraulic control system for aircraft A hydraulic control system for aircraft is disclosed, which has a flight maneuver system mounted on the aircraft and provided with a maneuver signal input and output system for controlling the aircraft depending on flight conditions. The system includes a...	10/04/1994
5074495	Load-adaptive hybrid actuator system and method for actuating control surfaces An actuator system for a control surface of an aircraft having a hydraulic system and a source of actuation system commands. The actuator system includes hydraulic circuits connected to the aircraft hydraulic system and an electrically-powered hydraulic c...	12/24/1991
5033694	Attitude control device for air or sea transportation craft An attitude control system for controlling a plurality of attitude control devices, which cooperate to establish the attitude of a vehicle includes redundant control units for outputting attitude control signals to each of the attitude control devices. Ad...	07/23/1991
4991800	Backdrive control system for aircraft flight control surfaces A backdrive system is provided for aircraft flight control surfaces, including a motor for driving a control surface. A fluid pressure responsive engaging/disengaging device is operatively associated between the motor and the control surface. The device m...	02/12/1991
4789119	System for controlling the high-lift flaps of an aircraft This invention relates to a system for controlling the high-lift flaps of an aircraft subjected to the blast of at least one engine. The system includes reversible hydraulic jacks for actuating the flaps arranged so that each flap is actuated by a jack an...	12/06/1988
4711089	Hydraulic system for aircraft A hydraulic system for an aircraft to provide improved reserve capability for the thrust reverser power system. There is a fluid reservoir having a vent tube with an inlet location located above the bottom wall of the reservoir. In the event that fluid in...	12/08/1987
4704865	Hydraulic reserve system for aircraft A hydraulic system for an aircraft to provide improved reserve capability for the steering and reserve brake power system. There is a fluid reservoir having a vent tube with an inlet location located above the bottom wall of the reservoir. In the event th...	11/10/1987
4688469	Fault detector for a triplexed mechanical or hydromechanical system A fault detector for a triplexed mechanical or hydromechanical system which provides for improvement in cost, reliability and weight over previously known balance beam arrangements for achieving redundant two-channel operation to provide a fail-operating ...	08/25/1987
4651045	Electromagnetically interference-proof flight control device An electromagnetically interference-proof flight control device having an hydraulic positioning drive for a control surface, the position of which is to be influenced. Provided are at least one signal line for feeding in optical control signals, at least ...	03/17/1987
4489907	Selectively integrated throttle spoiler actuator for aircraft A system for altering the lift/drag characteristics of powered general aviation aircraft whereby flight path control may be exercised. The control device operates in conjunction with such lift/drag altering devices, spoilers, dive brakes and the like, and...	12/25/1984
4403756	Bifurcated feel simulator for aircraft A bifurcated feel unit for use in a dual path flight control system includes separate input levers for the pilot and copilot control paths. The input levers pivot about a common axis but are capable of independent rotation upon override of the breakout po...	09/13/1983
4394999	Redundant or emergency steering mechanism especially for an aircraft A redundant steering mechanism for a craft, especially an aircraft, comprs redundant control components which become effective when the normal steering components become disabled as a result of an electrical power supply failure. The redundant control co...	07/26/1983
4272046	Hydraulic actuator mechanism to control aircraft spoiler movements through dual input commands The present invention is in the field of aircraft flight spoiler control mechanisms. The invention enables the conventional, primary spoiler control system to retain its operational characteristics while accommodating a secondary input controlled by a con...	06/09/1981
4177681	Apparatus for adjusting and locking a linear actuator A cylindrical linear actuator suitable for installation in a confined area and capable of infinite stroke adjustment over its scheduled travel and lockable at any position of its designated stroke includes overlapping and combining rod end stroke adjustme...	12/11/1979
4150803	Two axes controller A two axis controller for controlling a tanker aircraft in-flight refueling boom while maneuvering prior to engagement with the receiver aircraft and including a boom load alleviation system after engagement. Movement of the control stick is transmitted m...	04/24/1979
4089494	Reduced servo noise control for a hydraulic actuator In a hydraulic actuator such as those used in multiple degree freedom motion bases for aircraft simulators, a secondary force sensitive hydraulic servo loop is added in parallel to the primary position feedback servo loop with the secondary loop having a ...	05/16/1978
4079906	Servo-control device for controlling a control surface of an aircraft In a servocontrol device for controlling a control surface of an aircraft, which device is associated with a mechanical control member such as control column, wheel, pedals, and which comprises two identical double-acting hydraulic rams, integral with eac...	03/21/1978
4075930	Pneumatic actuator system and method A system for precisely positioning a linearly movable output member incorporates an improved nonexpansion, bi-directional vane motor whose internal gas carrying chamber is configured to prevent radial vane reciprocation while the vanes of the motor are un...	02/28/1978
3965798	Adaptive actuator system An adaptive actuator system comprising a rotatable shaft operatively coupled to a torque biasing means for biasing the rotational direction of the shaft, and also operatively coupled to a counter torque developing means for sensing the rotational bias of ...	06/29/1976
3955783	Hydraulic actuating arrangement for aircraft control surfaces A hydraulic actuating arrangement for an aircraft control surface has a control circuit, responsive to a position selection input signal, for providing six nominally identical output control signals. Six pilot valves respectively responsive to the control...	05/11/1976

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Class 244/226 - Fluid