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| Number | Title | Issue Date |
| 7010904 | Method for control scheduling to achieve linear thrust response A method for achieving linear engine thrust response comprising the steps of measuring a throttle position (FNRQ), measuring a plurality of engine parameters, inputting the plurality of engine parameters and the throttle position into a plurality of schedules to pro... | 03/14/2006 |
| 7011498 | Optimization method for power generation systems Apparatus for controlling the power output efficiency of a power generation system based on an operator input. A processor is coupled to the input means and (i) receives the generated operator command, (ii) receives a plurality of detected ambient air conditions, (i... | 03/14/2006 |
| 6951317 | Vehicle, lightweight pneumatic pilot valve and related systems therefor A vehicle, such as a missile, with a pilot valve system controls the vehicle's thrust valves despite a hostile propellant gas environment. The pilot valve system can have one or more pilot valves. Using refractory elements, the pilot valve ball reciprocates between ... | 10/04/2005 |
| 6892127 | Methods and apparatus for assessing gas turbine engine damage A method and apparatus for assessing damage to machine components is provided. The method includes calculating an expected parameter value based on a first parameter value indicator, calculating an estimate of an actual parameter value based on a second parameter va... | 05/10/2005 |
| 6745570 | Methods and apparatus for sealing gas turbine engine nozzles using a flap system A method for assembling a flap system for a gas turbine engine exhaust nozzle including a plurality of backbone assemblies facilitates extending a useful life of the exhaust nozzle. The method includes providing a flap basesheet having a width defined between a pair... | 06/08/2004 |
| 6270037 | Rapid response attitude control logic for shaft-driven lift fan STOVL engine A short take-off and vertical landing ("STOVL") aircraft has a conventional gas turbine engine that is selectively mechanically connected to a vertically-oriented lift fan by a drive shaft when the aircraft operates in a vertical flight mode. An engine co... | 08/07/2001 |
| 6269627 | Rapid thrust response control logic for shaft-driven lift fan STOVL engine A short take-off and vertical landing ("STOVL") aircraft has a conventional gas turbine engine that is selectively mechanically connected to a vertically-oriented lift fan by a drive shaft when the aircraft operates in a vertical flight mode. An engine co... | 08/07/2001 |
| 6233919 | Force driven hot gas proportional thruster valve A thruster valve has a continuously positionable piston between a closed position and a maximum open position. The piston moves in response to the difference in pressure between the pressure of the valve's inlet and thruster nozzle and the pressure behind... | 05/22/2001 |
| 6186447 | Autothrottle retard rate control system In an autothrottle system having the capability to reduce engine throttle setting from a first position to an idle position, an improvement including calculating a rate of throttle reduction as a function of the combination of a nominal retard rate value ... | 02/13/2001 |
| 5775094 | Apparatus and method for controlling thruster valve When the operation of an electromagnetic thruster valve disposed in a fluid assage for establishing the connection between a gas tank and a thruster unit for jetting gas filled in the gas tank is controlled to follow a thrust command, rise time of thrust a... | 07/07/1998 |
| 5463458 | Optical sensor for duct fan discharge mach numbers A Mach number sensor comprises a first pulse speed sensor situated in direct contact with an open area through which a first pressure pulse can pass and a second pulse speed sensor situated in a thermally conductive tube with membrane-covered ends having ... | 10/31/1995 |
| 5442909 | Control system for limiting the vector angle in an axisymmetric vectoring exhaust nozzle A method for controlling the amount of side load experienced by a gas turbine engine and associated airframe components is provided, where the gas turbine engine includes a thrust vectoring system which deflects thrust at a vector angle away from a center... | 08/22/1995 |
| 5437151 | Detecting and controlling supersonic airflow normal shock pattern position in an aircraft jet engine assembly The position of the normal airflow shock pattern in the airflow inlet of a supersonic aircraft jet engine assembly is detected by a light beam position sensor assembly. A narrow band coherent source light beam is angularly transmitted across the engine as... | 08/01/1995 |
| 5431010 | High speed, amplitude variable thrust control method A high speed control apparatus and method utilized in a system having a high pressure fluid supply for producing precisely controlled, amplitude and duration variable thrust are disclosed, the apparatus including a piezoelectric stack responsive to a cont... | 07/11/1995 |
| 5394690 | Constant pressure, variable thrust bipropellant engine A pressure controlled pintle is employed in combination with a throttling quid, gel, or hybrid engine to provide a constant pressure and variable thrust from a single operating engine. As the propellants are throttled back and the chamber pressure drops, ... | 03/07/1995 |
| 5271226 | High speed, amplitude variable thrust control A high speed control apparatus and method utilized in a system having a high pressure fluid supply for producing precisely controlled, amplitude and duration variable thrust are disclosed, the apparatus including a co-fired piezoelectric stack connected w... | 12/21/1993 |
| 5136841 | Aircraft propulsion control system Integration of engine functions and data communications between an aircraft propulsion module and an airframe is enabled by the use of fiber optic links which multiplex information and control functions without risk of an electrical failure in one portion... | 08/11/1992 |
| 5048285 | Control system for gas turbine engines providing extended engine life A control system for use in gas turbine engines simultaneously provides for improved engine efficiency and extended engine life without sacrificing engine performance. The control system is characterized by both standard and extended engine life (EEL) ope... | 09/17/1991 |
| 5044155 | Aircraft propulsion control system Integration of engine functions and data communications between an aircraft propulsion module and an airframe is enabled by the use of fiber optic links which multiplex information and control functions without risk of an electrical failure in one portion... | 09/03/1991 |
| 4991393 | Spacecraft guidance and control system Apparatus and a corresponding method for controlling the attitude of a space vehicle during operation of its propulsion engines, without gimbaling of the engines. Two engines are differentially throttled, one above and one below a nominal thrust setting o... | 02/12/1991 |
| 4662171 | Automatic thrust restoration system A system for automatically restoring thrust to the working engine(s) of an aircraft if power is lost by an engine while the aircraft is operating at reduced thrust during a takeoff noise abatement maneuver is disclosed. The automatic thrust restoration (A... | 05/05/1987 |
| 4396171 | Aircraft ejection seat catapult device The acceleration applied to an ejection seat during the catapult phase of emergency escape from an aircraft is limited to a maximum value which can be tolerated by the ejectee by incrementally venting exhaust gas from the high pressure chamber of the ejec... | 08/02/1983 |
| 4221114 | Gas turbine jet propulsion engine A gas turbine engine has three turbines, the intermediate and high pressure turbines running at substantially constant corrected speed. The low pressure turbine has variable nozzle guide vanes and the low pressure compressor has variable stators so as to ... | 09/09/1980 |
| 4100877 | Protective control system for water-jet propulsion systems A protective system is provided for water-jet propulsion systems in which water entering through an intake port is discharged in a jet by a pump. Unloading and overspeed of the pump prime mover may occur if the intake comes out of the water and this is pr... | 07/18/1978 |
| 3977187 | Device for detecting effective operation of the reheat system of a turbo-jet engine In order to detect effective operation of the reheat system of a turbo-jet ngine, a detection device is provided which is adapted to produce an output signal when such effective operation is sensed. The detection device includes means for sensing the press... | 08/31/1976 |
