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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8001764 | Vibration isolation engine mount system and method for ducted fans A vibration isolation engine mount system and method for ducted fan aircraft, such as ducted fan vertical takeoff and landing (VTOL) aircraft, includes an engine for driving the ducted fan. The system includes an engine support structure for supporting the engine wi... | 08/23/2011 |
| 7765790 | Stationary mechanical engines and subsonic jet engines using supersonic gas turbines A ramjet engine (3, 4, 5), flying at Mach 3 has 64% efficiency, and at Mach 4 has 76% efficiency. Ramjet engines are currently only used for supersonic flight and have not been used as stationary engines with mechanical output. The present invention, in addit... | 08/03/2010 |
| 7617670 | Flow control redistribution to mitigate high cycle fatigue A method operable to improve pressure recovery and/or distortion within engine inlet is disclosed. A first fluid flow is provided to primary jet vortex generator(s) operable to inject fluid at a first injection rate into a boundary layer of a primary fluid flow with... | 11/17/2009 |
| 7500353 | Eductor swirl buster A system is provided in an aircraft that includes a power unit and an eductor. The power unit has a nozzle, and is configured to exhaust gas, a portion of which flows in a swirling motion, through the nozzle. The eductor communicates with the power unit and includes... | 03/10/2009 |
| 7229029 | Propulsion system A propulsion system for a jet- or rocket-propelled vehicle in which the resulting jet exhaust nozzle profile is a 3D spiral. The propulsion system can be applied to any jet- or rocket-propelled vehicle, including aircraft and watercraft. The propulsion system also c... | 06/12/2007 |
| 7117663 | Air breathing, hydrogen fueled jet engine for high speed aircraft A hydrogen fueled jet engine for hypersonic aircraft. The compressor of the jet engine is driven directly by a dual-acting rotary piston engine. Heated, high pressure hydrogen is delivered to the rotary piston engine for expansion therein. The crankshaft of the rota... | 10/10/2006 |
| 7111449 | Gas heat engine A new type of gas heat engine is described that has several features similar to a gas turbine or jet engine. The engine is developed in many different configurations, each yielding different theoretical advantages and degrees of freedom. All of this family of engine... | 09/26/2006 |
| 7051659 | Projectile structure A scramjet has a cowl, a center structure, and a plurality of wide pylons connecting the cowl to the center structure, with scramjet engines positioned between adjacent pylons. Leading surfaces of adjacent pylons converge to one another to provide side wall compress... | 05/30/2006 |
| 6993915 | Solid propellant gas generators in power systems An emergency power system comprising a plurality of solid propellant gas generators each having a gas outlet in fluid communication with a turbine wheel rotationally disposed within a gas turbine housing, the turbine wheel being in rotational communication with an e... | 02/07/2006 |
| 6990798 | Hybrid inlet A turboprop powerplant with at least a compressor having a forward compressor inlet and a shaft extending axially through the compressor and having a shaft axis, an inlet duct encircling the shaft passing therethrough, the inlet duct having an aft end in gas communi... | 01/31/2006 |
| 6988357 | Nested core gas turbine engine A gas turbine engine comprising a combustion chamber section, a turbine section, and a compressor section. The turbine section surrounds the combustion chamber and the compressor section surrounds the turbine section. ... | 01/24/2006 |
| 6981366 | Turbineless jet engine A turbineless jet engine includes no internal moving components, yet operates using a continuous combustion principle. The present engine is self-starting, i.e., no auxiliary source of pressurized airflow or unconventional fuels is required for its starting and oper... | 01/03/2006 |
| 6973774 | Hybrid propulsion system While commercial jet aircraft are capable of transporting large pay load economically, the same is not true for rockets. To solve this problem, a hybrid propulsion system is proposed for use in Horizontal Take-Off and Land (HOTOL) craft. The purpose is to maximized ... | 12/13/2005 |
| 6966174 | Integrated bypass turbojet engines for air craft and other vehicles Turbojet engines and aircraft configurations for advantageous use of the turbojet engines; the turbojet engines utilizing ram air turbine units that centrifugally compress air isothermally for use in various combustion configurations designed for stoichiometric comb... | 11/22/2005 |
| 6959552 | Gas turbine inlet flow straightener A radial inlet assembly comprising a radial inlet adapted to be in fluid communication with a compressor, and a restricting member covering the radial inlet and receiving a circumferentially asymmetric airflow, the restricting member partially blocking the airflow a... | 11/01/2005 |
| 6955050 | Thermal storage unit and methods for using the same to heat a fluid A thermal storage unit having at least one annular flow channel formed between an inner and outer member is provided. The thermal storage unit uses conventional mill products to create annular flow channels that economically maximize the surface area of flow in cont... | 10/18/2005 |
| 6940185 | Advanced aerodynamic control system for a high output wind turbine An advanced aerodynamic control system for a wind turbine including a drive shaft and blade. The control system includes an air control system coupled to a duct that extends from a first end toward a second end of the blade. A slot extends along a portion of a surfa... | 09/06/2005 |
| 6928963 | Low drag fan for a ram air induction system A low drag fan assembly is provided which is adapted to be mounted within a ducting conduit of a ram air induction system of a vehicle for cooling a heat exchanger. The assembly includes a motor having an output drive; a motor bracketing system attached to the motor... | 08/16/2005 |
| 6925812 | Rotary injector A radially-extending arm is adapted to rotate within a stream of first fluid flowing thereacross. In one embodiment, the arm comprises a plurality of lands located at different radial distances from the axis of rotation, and a port located on each land is operativel... | 08/09/2005 |
| 6910327 | Apparatus and methods for varying inlet lip geometry of a jet engine inlet Apparatus for varying inlet lip geometry of a inlet formed at forward end portion of a jet engine housing. In one embodiment, the apparatus includes a variable camber skin portion hingedly coupled to the forward end portion of the housing. The apparatus also include... | 06/28/2005 |
| 6901737 | Air intake for an auxiliary power unit in an aircraft An air intake for an aircraft forms a first airflow channel (8) for feeding fresh air into the aircraft, and a second airflow channel (2) for feeding cooling air to an auxiliary power unit (AP). These first and second airflow channels are so positioned... | 06/07/2005 |
| 6792747 | Turbo shaft engine with acoustical compression flow amplifying ramjet A turbo shaft engine for amplifying an air stream flow rate includes a turbine fan assembly and gas generator. The gas generator includes a primary air duct defining intake and outlet ports. A combustion chamber is connected to the primary air duct for igniting an a... | 09/21/2004 |
| 6786036 | Bimodal fan, heat exchanger and bypass air supercharging for piston or rotary driven turbine The present invention relates to turbine fan aircraft use. In particular, the present invention is directed toward a turbine fan driven by a piston or rotary (e.g., Wankel) engine. The present invention makes possible the most flexible and effective installation of ... | 09/07/2004 |
| 6786040 | Ejector based engines The ejector based engine is, as an example in an ejector ramjet engine, a propulsion duct having normal augmented ramjet elements of an inlet, mixer, diffuser, combustor and exit nozzle that allow operating velocities from zero to hypersonic. At the upstream end of ... | 09/07/2004 |
| 6766638 | Hydrogen peroxide based propulsion system A micro air vehicle is propelled by a bipropellant micro engine supplied with hydrogen peroxide and a hydrocarbon fuel. The hydrogen peroxide is decomposed to produce steam and oxygen at high temperature and the hydrocarbon fuel is burnt within a combustion chamber ... | 07/27/2004 |
| 6751946 | Ducted fan integrated power plant unit having propeller with central blade wheel A ducted fan integrated power plant unit having a propeller with a central blade wheel comprises a ducted fan stator, which stator includes an outer ring having the central air intake guide ring, an inner ring; stator guide blades connecting the outer ring and the i... | 06/22/2004 |
| 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 |
| 6647709 | Turbo shaft engine with acoustical compression flow amplifying ramjet A turbo shaft engine for amplifying an air stream flow rate includes a plurality of blades positioned within a turbine housing for rotation by an intake air flow. A gas generator having a primary air duct defines intake and outlet ports, the intake port r... | 11/18/2003 |
| 6644015 | Turbojet with precompressor injected oxidizer A turbojet engine with improved thrust and high-altitude capabilities. Arrangements are provided for injecting liquid oxygen or other oxidizer into the turbojet engine before the compressor section. Cooling the incoming air by the liquid oxygen reduces th... | 11/11/2003 |
| 6615576 | Tortuous path quiet exhaust eductor system A tortuous path quiet exhaust eductor system may be mounted to a gas turbine engine, such as commercial aircraft APU. The system includes an oil cooler, eductor primary nozzle, oil cooler air nozzle, and surge air dump nozzle. The primary nozzle, oil cool... | 09/09/2003 |
| 6499286 | Method for the operation of a supersonic jet-engine combined power unit A method for operating a supersonic hybrid jet power plant during various flight operations. The power plant includes a jet engine and a reciprocating internal combustion engine, the jet engine having a housing defining an inlet for receiving air, an afte... | 12/31/2002 |
| 6457305 | Turbo shaft engine with acoustical compression flow amplifying ramjet A ramjet for amplifying an air stream flow rate includes a plurality of blades positioned within a turbine housing for rotation by an intake flow received through a housing inlet port. A gas generator having a primary air duct defines intake and outlet po... | 10/01/2002 |
| 6393831 | Exoskeletal engine A turbojet engine is made from a drum-like portion having a circular blade section extending inwardly therefrom, a support member, and a bearing arranged around a circle having a diameter substantially equal to or greater than the diameter of the blade se... | 05/28/2002 |
| 6216446 | Valveless pulse-jet engine with forward facing intake duct A self-starting, self-aspirating valveless jet engine comprising a combustor tube, a multiple tube intake duct, a flame holder, and a fuel supply means. High throttle capability has been achieved through the use of an intake duct consisting of multiple tu... | 04/17/2001 |
| 6079667 | Auxiliary inlet for a jet engine An auxiliary inlet (60) for a jet engine has a first rod block (62) attached to a first side (64) of a hole (66) in a skin (68) of an inlet of the jet engine. A second rod block (80) is attached to an opposing side (82) of the hole (66) in the skin (68) o... | 06/27/2000 |
| 5946904 | Ejector ramjet engine The ejector ramjet engine is a propulsion duct having normal augmented ramjet elements of an inlet, mixer, diffuser, combustor and exit nozzle. At the upstream end of the mixer an injector assembly is mounted in the fluid flow path to form an ejector. The... | 09/07/1999 |
| 5692372 | Aircraft compound cycle propulsion engine A ducted fan aircraft compound cycle engine comprises a core engine which includes a compressor, three rotary internal combustion engines fed by the compressor and a power turbine to receive the combustion products of the rotary and combustion engines. Th... | 12/02/1997 |
| 5579644 | Turbo-jet equipped with inclined balancing disks within the rotor of the high pressure compressor and process for producing such disks A method and apparatus for maintaining or holding the rotor of a high pressure compressor of a very rigid turbojet during turbojet operation. The interior of the rotor of the high pressure compressor comprises upstream-inclined balancing disks (13) which ... | 12/03/1996 |
| 5471834 | Engine driven propulsion fan with turbochargers in series An engine driven propulsion fan. The preferred use of this fan is to power aircraft. Two turbochargers are provided both driven in series by exhaust gasses from a rotary engine. A portion of the compressed air produced by the second turbocharger provides ... | 12/05/1995 |
| 5447283 | Blown boundary layer control system for a jet aircraft A blown boundary layer control system for an aircraft having a jet engine with an engine compressor, an inlet including a compression surface with an external part and internal part, a cowl lip including an internal lip surface and an external lip surface... | 09/05/1995 |
