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| Number | Title | Issue Date |
| 7424989 | Intelligent multifunctional actuation system for vibration and buffet suppression Circuits and methods for use on a mobile platform including a flight control system, a structure, an aerodynamic surface, and an actuator operatively coupled to the surface to control the surface. The circuit includes a first and a second input, a summing element, a... | 09/16/2008 |
| 7338017 | Methods and apparatus for vibration and buffet suppression Apparatus and methods for hybrid actuation and suppressing vibration are disclosed. In one embodiment, a hybrid actuator includes a first actuator and a second actuator linked to move a component a combined actuation distance. The first actuator may include a hydrau... | 03/04/2008 |
| 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 |
| 7175132 | Mechanism for eliminating limit cycle oscillations on servocontrolled aerodynamic control surfaces Servocontrolled aerodynamic control surfaces, such as the direction rudder (1) of an airplane, are equipped with servoactuators (5). The bearing supports (3) of the rotation axis (2) or hinged axis give rise to the formation of free play ... | 02/13/2007 |
| 4865269 | Overtravel stop and neutral position lock An aircraft flight control surface actuator that prevents against overtravel is provided with a lock which includes a pin (76) that is urged by spring (b 74) toward the wall (68) that is part of control gear (56) which travels along the axis of a threaded... | 09/12/1989 |
| 4799623 | Variable convergent/divergent nozzle A variable area convergent divergent nozzle has floating divergent flaps which shift from a low mode to a high mode depending on internal and external pressure. The lost motion connection which permits this is biased to retain the appropriate mode for lon... | 01/24/1989 |
| 4502652 | Process and apparatus for suppressing external load carrying wing flutter for aircraft In a semi-active system for suppressing external load-carrying wing flutter in aircraft, the carrying wing (1) is provided with one or more external loads (2), and the suspension of the external load (2) on the carrying wing (1) about an axis is arranged ... | 03/05/1985 |
| 4496121 | Control surface lock for flutter constraint A control surface lock (10) for flutter constraint of a control surface (14) of an aircraft in cooperative combination with an hydraulic actuator (12), wherein system pressure on the actuator maintains the lock in a dynamically bypassed configuration and ... | 01/29/1985 |
| 4428550 | Vibration-insulating stability improving torque force device A conventional aircraft having horizontal stabilizers and hinged elevators, which is controlled, preferably, through push-pull rods, is provided with a dynamic torque (bob) weight connected to a rotating member, in the direct line of control to the elevat... | 01/31/1984 |
| 4109549 | Dynamic balancer for rotating bodies and method of manufacturing same A rotating mechanism such as a model aircraft propeller shaft is balanced by a dynamic balancing apparatus comprising a disc rotating with the shaft and a stainless steel O-ring partly filled with mercury lodged in an undercut groove in the face of the di... | 08/29/1978 |
