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| Number | Title | Issue Date |
| 7328571 | Semi-axisymmetric scramjet flowpath with conformal nozzle In accordance with a first aspect of the present invention, an aircraft having a scramjet engine is provided. The scramjet engine includes a flowpath which varies in three dimensions. In accordance with a second aspect of the present invention, a method for launchin... | 02/12/2008 |
| 7194852 | Propulsion from combustion of solid propellant pellet-projectiles Propulsion from combustion of solid propellant pellet-projectiles for providing a useful propulsion that has the advantages of both solid and liquid propulsion engines, and also can make use of either solid chemical propellants or fissionable nuclear material as the... | 03/27/2007 |
| 6981364 | Combine engine for single-stage spacecraft A novel combined engine for a single-stage spacecraft is provided that combines a air-breathing engine utilizing oxygen in the atmosphere as oxidizer and rocket engines for obtaining thrust outside the atmosphere and that does not require a portion whose shape is va... | 01/03/2006 |
| 6968676 | Propulsion from combustion of solid propellant pellet-projectiles Propulsion from combustion of solid propellant pellet-projectiles for providing a useful propulsion that has the advantages of both solid and liquid propulsion engines, and also can make use of either solid chemical propellants or fissionable nuclear material as the... | 11/29/2005 |
| 6907724 | Combined cycle engines incorporating swirl augmented combustion for reduced volume and weight and improved performance A combined-cycle engine having at least one core engine and at least one ramjet engine. The ramjet utilizes a novel swirl generator for rapidly and efficiently atomizing, vaporizing, as necessary, and mixing a fuel into an oxidant. The swirl generator converts an ox... | 06/21/2005 |
| 6725664 | Shut-off system for an orifice of a duct, particularly for an orifice of an air inlet passage that allows air into the combustion chamber of a ramjet A shut-off system for an orifice of a duct, particularly for an orifice of an air inlet passage that allows air into the combustion chamber of a ramjet, includes a shutter for shutting off the orifice of the duct, and a controllable actuating device capable of actin... | 04/27/2004 |
| 6446427 | Solid fuel regression rate control method and device The present invention relates to a method and device for controlling the solid fuel regression rate of a solid fuel ramjet engine. In a preferred embodiment of the present invention, pressure oscillations are excited using active, closed-loop control to v... | 09/10/2002 |
| 6405526 | Solid fuel propulsion system for a ram jet rocket A solid fuel propulsion system for a ran jet rocket having a combustion chamber (B) surrounded by a tubular casing (2) and a gas generator (G) disposed upstream from the combustion chamber (B) and surrounded by a tubular casing (1) for generation of a com... | 06/18/2002 |
| 6293091 | Axisymmetrical annular plug propulsion system for integrated rocket/ramjet or rocket/scramjet The invention is an airframe which includes a vehicle (12) having a solid propellant rocket engine (14) and a ramjet or scramjet engine (16); a thrust plug (18) extending from an end (20) of the vehicle which directs combustion gases (23 and 64) produced ... | 09/25/2001 |
| 5317866 | Free-flying tubular vehicle A relatively low drag, completely free-flying, tubular vehicle comprises a body that defines a leading edge and a trailing edge and includes an external surface and an internal surface each extending from the leading to the trailing edge. The internal sur... | 06/07/1994 |
| 5224344 | Variable-cycle storable reactants engine A variable-cycle storable fuels engine having three cycles is provided. The engine operates as an air-augmented rocket from launch to approximately Mach 3. From approximately Mach 3 to Mach 8, the engine operates as a dual mode ramjet/scramjet to altitude... | 07/06/1993 |
| 5152136 | Solid fuel ducted rocket with gel-oxidizer augmentation propulsion A propulsion system is disclosed comprising a glycidyl azide polymer (GAP) olid fuel generator (SFGG) that produces fuel-rich hot gases which are combusted in a combustion zone of a combustion chamber of a solid fuel ducted rocket. A basic embodiment compr... | 10/06/1992 |
| 5067406 | Supersonic, low-drag, solid fuel ramjet tubular projectile A low-drag supersonic tubular projectile with self-contained thrust augmetion and capable of simultaneous dual internal air flows. One is a centrally located supersonic flow for providing low-drag characteristics, and the other a subsonic flow annularly ... | 11/26/1991 |
| 4807435 | Air-breathing jet engine A rocket engine according to the invention has a body generally extending along an axis and adapted to move through the air in a predetermined axial back-to-front direction. This body is formed with axially spaced front and rear fuel-containing combustion... | 02/28/1989 |
| 4760695 | Acoustic oscillatory pressure control for ramjet The periodic shedding of vortices produced in a highly sheared gas flow, such as that encountered at the grain transition boundary in a solid propellant rocket motor or at the combustor inlet to a ramjet engine, is a significant source of acoustic instabi... | 08/02/1988 |
| 4722261 | Extendable ram cannon A ram cannon (1) has an extendable barrel (2) slidably disposed over a starter cannon barrel (7). Such an extendable barrel is fully retractable during transport of the cannon and extendable at the time of firing. The barrel is also partially extendable, ... | 02/02/1988 |
| 4651523 | Integral rocket and ramjet engine An integral rocket and ramjet engine (16) comprises, in flow series, an intake duct (18) for aerodynamically compressing air, a port cover (30), a combustion chamber (20) and a propelling nozzle (22). The port cover (30) in a first position prevents air f... | 03/24/1987 |
| 4631916 | Integral booster/ramjet drive A missile drive is provided comprising a single combustion chamber shared by a first, acceleration stage and a second, ramjet cruising stage, said chamber housing the solid propellant to be consumed during acceleration. At least one air inlet is opened at... | 12/30/1986 |
| 4628688 | Solid fuel ramjet flow control device A device for controlling the rate of fuel generation in a solid fuel ramjet ngine having a translating tube within the fuel grain and air inlet for continuously changing the distribution of air over the fuel grain in response to air mass flow. The distribu... | 12/16/1986 |
| 4483139 | Valve construction particularly for ram jet rocket engines and to a ram jet rocket engine construction A ram jet rocket includes a precombustion chamber having a solid fuel propellant which burns off so that the gases generated are deficient in oxygen when they pass through a central aperture of a valve body into a main combustion chamber in which they are... | 11/20/1984 |
| 4450679 | Ram jet engines and rotary gas flow valve therefor A device for controlling the flow cross sections of several channels for gas flow tubes which interconnect combustion chamber portions particularly of ram jet engines comprises a polygonal rotary valve which is rotatably mounted adjacent the passages and ... | 05/29/1984 |
| 4449361 | Ram jet engine construction and a valve control for proportioning fuel rich gas of ram jet rocket engines A ram jet engine comprises a wall structure defining a precombustion chamber having a solid fuel which when ignited can raise fuel rich gases which flow through a valve housing passage and into a main combustion chamber where final combustion takes place.... | 05/22/1984 |
| 4368620 | Windmills for ramjet engine A solid fueled ramjet engine comprising solid fuel within a combustion chamber in the form of a hollow cylinder, and a windmill at the entrance to the hollow cylinder for promoting better distribution of the air, better mixing of the air and combustion ga... | 01/18/1983 |
| 4110977 | Pyrogen igniter ramjet ignition system An ignition system for initiating combustion in a ramjet engine characterd by a replaceable propellant grain type igniter set into the wall of a ram air tube supplying air and fuel to the engine combustion chamber. The igniter is fitted into a small avai... | 09/05/1978 |
| 4050243 | Combination solid fuel ramjet injector/port cover A combination injector/port cover for a solid fuel ramjet (SFRJ) having a be-in-hole injector which uses two seals to lock the tube into the air inlet and injector port during the boost phase, and which moves the tube into the combustion chamber during tr... | 09/27/1977 |
