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| Number | Title | Issue Date |
| 7954329 | Statically-operating ejector ramjet The present invention provides a statically starting and operating ramjet engine system. The system includes a pumping ejector coupled to a ramjet engine upstream of the ramjet inlet. A subsonic converging nozzle is placed in fluid communication between the pumping ... | 06/07/2011 |
| 7950235 | Jet engine A jet engine is constructed of a fanjet; a plurality of ramjets provided around said fanjet; a plurality of air flow spaces between said fanjet and said plurality of ramjets; and a cooling jacket provided around said plurality of ramjets. ... | 05/31/2011 |
| 7937945 | Combining a series of more efficient engines into a unit, or modular units Units of engines are described herein. The units contain a unique combined-cycle (deflagration-detonation) “contra-rotation, anti-gyration, gyroscopic,” turbine fan-jet/free-piston engine configuration for induced air supercharging that boosts the performance of... | 05/10/2011 |
| 7797943 | Core burning for scramjet engines A pilot for a scramjet provides a flame front whose arrival at the wall of the scramjet combustor is delayed thereby reducing combustor heat load. By combining in-stream injection of fuel with an interior pilot and a lean (fuel-poor) outer annulus, the bulk of combu... | 09/21/2010 |
| 7762077 | Single-stage hypersonic vehicle featuring advanced swirl combustion A single-stage hypersonic vehicle is comprised of a low-speed and a high-speed propulsion system. The low-speed propulsion system propels the single-stage vehicle to a threshold velocity, after which the high-speed propulsion system then takes over. The low-speed pr... | 07/27/2010 |
| 7685824 | Rotary ramjet turbo-generator A Brayton-cycle rotary ramjet engine (10) operated within the confines of a helically elongated pass-through duct formed between a preferably stationary radially outward surface (14) and an outer rotating flow channel (36). The flow channel (... | 03/30/2010 |
| 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 |
| 7251928 | Pulse detonation engine and valve Pressure and density of a gaseous mixture are increased in the process of introducing the gaseous mixture into the combustor of an air-breathing pulse detonation engine employing atmospheric oxygen as an oxidizer. The exit valve 20 able to be opened and close... | 08/07/2007 |
| 7168236 | Compact lightweight ramjet engines incorporating swirl augmented combustion with improved performance A ramjet powered device that 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 oxidant flow into a turbulent, three-dimensional flowfield into which th... | 01/30/2007 |
| 7137255 | Compact swirl augmented afterburners for gas turbine engines An afterburner apparatus that utilizes a novel swirl generator for rapidly and efficiently atomizing, vaporizing, as necessary, and mixing a fuel and an oxidant. The swirl generator converts an oxidant flow into a turbulent, three-dimensional flowfield into which th... | 11/21/2006 |
| 7117680 | Cooling scheme for scramjet variable geometry hardware A cooling system for use in an engine having an element to be cooled includes at least one cooling channel on a first side of the element, at least one cooling channel on a second side of the element, and the at least one cooling channel on the first side communicat... | 10/10/2006 |
| 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 |
| 7000398 | Ramjet engine combustion chamber and ramjet engine equipped with same The invention concerns a combustion chamber whereof the inner wall (17)is made at least partly of a thermostructural composite material, which is porous to the fuel passing through the double wall (14); and the porosity of said inner wall (17) i... | 02/21/2006 |
| 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 |
| 6969251 | Burner A burner (1) for heat generation, in particular in a gas turbine, is disclosed as well as a method for the stabilization of the flame of a burner (1). The burner (1) comprises inlet openings (3) for a combustion air stream, at least a swi... | 11/29/2005 |
| 6968695 | Compact lightweight ramjet engines incorporating swirl augmented combustion with improved performance A ramjet powered device that 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 oxidant flow into a turbulent, three-dimensional flowfield into which th... | 11/29/2005 |
| 6952917 | Dual liquid engine and rocket using the same The engine for a rocket is suitable for using for an educational program. The engine uses a liquid phase propellant having a predetermined boiling point and a heating substance having a temperature higher than the boiling point. The engine has an inner wall having a... | 10/11/2005 |
| 6915626 | Blanking-plug system for blanking off an orifice of a pipe, particularly for blanking off an orifice of a duct for introducing air into the combustion chamber of a ramjet A blanking-plug system for blanking off an orifice of a pipe, particularly for blanking off an orifice of a duct for introducing air into the combustion chamber of a ramjet. The blanking-plug system (16) comprises at least one blanking plug (15)... | 07/12/2005 |
| 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 |
| 6883330 | Variable geometry inlet design for scram jet engine The present invention relates to an improved variable geometry inlet for a scram jet engine having at least one combustor module. The variable geometry inlet comprises each combustor module having two sidewalls. Each of the sidewalls has a central portion with a thi... | 04/26/2005 |
| 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 |
| 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 |
| 6715293 | Scram jet engine design The present invention relates to a scram jet engine for use with a hypersonic vehicle. The scram jet engine has an upper boundary wall, a lower boundary wall, and a plurality of side walls defining an inner air flowpath. The walls are formed by a plurality of tubula... | 04/06/2004 |
| 6672068 | Ramjet for a supersonic and hypersonic aircraft According to the invention, the wall (5) is mounted movably as one so as to be able to slide longitudinally in translation, bringing the joint line (14) closer to the fuel injector (9) so as progressively to modify the geometries of the oxidant inlet (16)... | 01/06/2004 |
| 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 |
| 6631610 | Consumable port cover for ducted integral rocket-ramjet engine In an integral rocket-ramjet engine the air intake ports are covered with a port cover made of a laminate of Pd and Al. This port cover is rapidly consumed in the brief period between the end of the rocket mode and commencement of the ramjet mode to allow... | 10/14/2003 |
| 6470672 | Minimally intrusive and nonintrusive supersonic injectors for LANTR and RBCC/Scramjet propulsion systems A family of supersonic injectors for use on spaceplanes, rockets and missiles and the like is disclosed and claimed. Each injector maintains a specific constant (uniform) Mach number along its length when used while being minimally intrusive at significan... | 10/29/2002 |
| 6397581 | Heat exchanger in composite material and method for making same The heat exchanger comprises an intermediate portion (14) of refractory composite material, e.g. of C/C composite material, in which fluid circulation channels (16) are formed, and which is interposed between a portion of refractory composite material, e.... | 06/04/2002 |
| 6347507 | Method and apparatus for power generation using rotating ramjets A novel, improved method and apparatus for generation of mechanical and electrical power. Thrust module(s) is(are) provided on a low aerodynamic drag rotor. The rotor is affixed at a central hub to a shaft, and rotates about an axis defined by the shaft. ... | 02/19/2002 |
| 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 |
| 6164061 | Fuel-injecting apparatus for ramjet engine cooled by transpiration A fuel injection strut for a ramjet adapted to operate at high Mach numbers includes a combustion chamber into which a flow of combustion-supporting gas is introduced. A first end of the strut includes a stem having a leading edge with a dihedral shaped w... | 12/26/2000 |
| 6116019 | Sealing system for an air intake opening of a ram jet combustion chamber The present invention relates to a shut-off system for an orifice for introducing combustion air into a ramjet with a consumable auxiliary motor (14). According to the invention, this shut-off system comprises: an elastic system (28, 29, 31, 32) connected to t... | 09/12/2000 |
| 6003302 | Ramjet with adjustable working duct casings A ramjet having an annular working duct (10) which is formed by outer (15) and inner (20) tubular casings. The duct (10) is adjustable by the longitudinal displacement of inner casing (20) along outer casing (15).... | 12/21/1999 |
| 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 |
| 5904319 | Guided missile with ram jet drive A guided missile with ram jet drive, with an engine occupying the airframe cross section, with two outer air intakes in the lower area of the airframe, which lead to the tail with wake shafts, with a tail plane including four separately pivotable vanes in... | 05/18/1999 |
| 5853143 | Airbreathing propulsion assisted flight vehicle The flight vehicle includes an elongated central body having a central axis defined therein and a circumference. A plurality of elongated portions are positioned about the central body. A plurality of airbreathing engines are axisymetrically positioned ab... | 12/29/1998 |
| 5836542 | Flying craft and a thruster engine suitable for use in such a craft A flying craft (14) has a dish shaped body (18, 20, 21) with a convex upper surface (18) to provide lift. Engine means (1) in the form of a jet or rocket engine is housed in the body at the rear, while a duct (15) extends through the body from an air open... | 11/17/1998 |
| 5794434 | Aircraft thrust reverser system with linearly translating inner and outer doors A thrust reverser system including a reverse thrust airflow duct (44) extending through an outer structure (46) of an aircraft engine aft nozzle (32) is disclosed. The reverse thrust duct (44) connects a nozzle exhaust duct (34) with the surrounding atmos... | 08/18/1998 |
| 5709076 | Method and apparatus for power generation using rotating ramjet which compresses inlet air and expands exhaust gas against stationary peripheral wall Novel power generation method and apparatus. At least partially unshrouded type supersonic ramjet thrust module(s) are provided at the periphery of a low aerodynamic drag tapered disc rotor. The rotor is affixed at a central hub to a shaft, and rotates ab... | 01/20/1998 |
| 5578783 | RAM accelerator system and device A method for accelerating projectiles comprises introducing the projectile into an accelerator barrel, feeding a combustible gas mixture into said barrel and igniting said mixture to accelerate the projectile, and is characterized in that a fluid is store... | 11/26/1996 |
