Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7500348 | Pulse combustion device A pulse combustion device has a number of combustors with upstream bodies and downstream nozzles. Coupling conduits provide communication between the combustors. For each given combustor this includes a first communication between a first location upstream of the no... | 03/10/2009 |
| 7410131 | Pulsed detonation engines for reaction control systems Pulsed detonation engines (PDEs) are adapted for use in reaction control systems (RCS), such as thrusters for orbital correction and control (e.g., for earth-orbiting satellites), divert thrust generation and control for space-based interceptor devices, and for miss... | 08/12/2008 |
| 7367194 | Pulse detonation engine system for driving turbine A pulse detonation engine system (1) for driving a turbine is comprises a detonation generator section (5) including a detonation tube (7) having a tubular hollow section for permitting detonation to be generated therein during combustion stage ... | 05/06/2008 |
| 7340903 | Scalable power generation using a pulsed detonation engine A scalable power generator is described. A scalable, portable pulsed detonation engine is coupled to a turbine which drives a generator and using commonly available fuels, electric energy is provided. Additional embodiments incorporate a mechanical compressor at the... | 03/11/2008 |
| 7328570 | Pulse detonation system for a gas turbine engine having multiple spools A gas turbine engine having a longitudinal centerline axis therethrough, including: a fan section at a forward end of the gas turbine engine including at least a first fan blade row connected to a first drive shaft; a booster compressor positioned downstream of the ... | 02/12/2008 |
| 7278256 | Pulsed combustion engine A pulsed combustion apparatus includes a conduit having an outer wall and an inner wall. The inner wall has a number of apertures. An interior space is separated from the outer wall by the inner wall. An induction system is positioned to cyclicly admit charges to th... | 10/09/2007 |
| 7278611 | Pulsed detonation engines for reaction control systems Pulsed detonation engines (PDEs) are adapted for use in reaction control systems (RCS), such as thrusters for orbital correction and control (e.g., for earth-orbiting satellites), divert thrust generation and control for space-based interceptor devices, and for miss... | 10/09/2007 |
| 7200987 | Off-axis pulse detonation configuration for gas turbine engine The present invention is a gas turbine engine system containing a compressor stage, a pulse detonation stage, and a turbine stage. During operation of the engine system, compressed flow from the compressor stage is directed to at least one off-axis pulse detonation ... | 04/10/2007 |
| 7150143 | Hybrid fuel cell-pulse detonation power system A power system includes a fuel cell module adapted to receive a first fuel and a pulse detonation combustor adapted to receive and detonate a second fuel and exhaust a number of detonation products to create thrust for propulsion, mechanical work extraction or elect... | 12/19/2006 |
| 7137243 | Constant volume combustor A pressure wave apparatus utilizing the principles of pulsed detonation and wave rotor technologies. The apparatus includes inlet and outlet ports that interface with a plurality of fluid flow passageways on a rotor. A buffer gas is routed through some of the inlet ... | 11/21/2006 |
| 7131260 | Multiple detonation initiator for frequency multiplied pulsed detonation combustion The present invention is a pulse detonation combustion system, having a plurality of detonation initiation devices coupled to a main combustion chamber, where each of the detonation initiation devices is operating out-of-phase with each other. Each of the detonation... | 11/07/2006 |
| 7124573 | Rotary pulse detonation system with aerodynamic detonation passages for use in a gas turbine engine A pulse detonation system for a gas turbine engine having a longitudinal centerline axis extending therethrough. The pulse detonation system includes a rotatable cylindrical member having a forward surface, an aft surface, and an outer circumferential surface, where... | 10/24/2006 |
| 7100360 | Pulsed combustion engine A pulsed combustion device includes a support structure and a combustor carousel supported by the support structure and rotating relative thereto about an axis. The carousel has a number of combustion conduits in a circumferential array. Each conduit cyclically rece... | 09/05/2006 |
| 7100377 | Methods for operating gas turbine engines A method for operating a pulse detonation system. The method includes providing a pulse detonation chamber including a plurality of detonation tubes extending therein, and detonating a mixture of fuel and air within each detonation tube such that at least a first tu... | 09/05/2006 |
| 7096674 | High thrust gas turbine engine with improved core system A gas turbine engine having a longitudinal centerline axis therethrough, including: a fan section at a forward end of the gas turbine engine including at least a first fan blade row connected to a first drive shaft; a booster compressor positioned downstream of and ... | 08/29/2006 |
| 7093446 | Gas turbine engine having improved core system A gas turbine engine having a longitudinal centerline axis therethrough, including: a fan section at a forward end of the gas turbine engine including at least a first fan blade row connected to a drive shaft; a booster compressor positioned downstream of the fan se... | 08/22/2006 |
| 7093794 | Aircraft and detonative engine incorporating pulse detonation engines An aircraft includes at least one airfoil having a leading edge and a trailing edge. A number of pulse detonation engines are distributed along one of the leading and trailing edges of the airfoil and are positioned beneath the airfoil. Each pulse detonation engine ... | 08/22/2006 |
| 7080504 | Laser augmented turbojet propulsion system The invention is a turbojet propulsion system which includes a compressor section, a turbine section coupled by a shaft to the compressor section, a combustion section mounted between the compressor section and the turbine section, and an exhaust duct coupled to the... | 07/25/2006 |
| 7062901 | Variable geometry nozzle with flexible side wall The disclosed device is directed toward a periodic combustion propulsion system. The periodic combustion propulsion system comprises at least one periodic combustion chamber configured to contain periodic combustion and at least one supersonic exhaust nozzle coupled... | 06/20/2006 |
| 7055308 | Detonation damper for pulse detonation engines An engine includes at least one pulse detonation chamber configured to receive and detonate a fuel and an oxidizer. The pulse detonation chamber has an outlet end and includes a porous liner adapted to fit within an inner surface of the pulse detonation chamber with... | 06/06/2006 |
| 7047724 | Combustion ignition Distributed initiation (e.g., multipoint or continuous) is utilized to obtain constant volume-like combustion performance in a pulse combustion device in the absence of detonation. A number of such devices may be utilized as turbine engine combustors. ... | 05/23/2006 |
| 7007455 | Methods and apparatus for operating gas turbine engines A method for operating a pulse detonation system. The method includes providing a pulse detonation chamber including a plurality of detonation tubes extending therein, and detonating a mixture of fuel and air within each detonation tube such that at least a first tu... | 03/07/2006 |
| 6981365 | Supersonic revolving nozzle The disclosed device is directed toward a periodic combustion propulsion system. The periodic combustion propulsion system comprises at least one periodic combustion chamber configured to contain periodic combustion and at least one supersonic exhaust nozzle coupled... | 01/03/2006 |
| 6964154 | Axisymmetric, throttleable non-gimballed rocket engine A rocket engine assembly is provided for a vertically launched rocket vehicle. A rocket engine housing of the assembly includes two or more combustion chambers each including an outlet end defining a sonic throat area. A propellant supply for the combustion chambers... | 11/15/2005 |
| 6955052 | Thermal gas compression engine A power generation method and apparatus includes a plurality of gas reactors that combust fuel and an oxygen-containing gas under substantially adiabatic conditions such that hot high pressure combustion gases flow alternately and substantially continuously from eac... | 10/18/2005 |
| 6931858 | Rotating pulse detonation system for a gas turbine engine A pulse detonation system for a gas turbine engine having a longitudinal centerline axis extending therethrough includes a rotatable cylindrical member having a forward surface, an aft surface, and an outer circumferential surface, where a plurality of spaced detona... | 08/23/2005 |
| 6928804 | Pulse detonation system for a gas turbine engine A pulse detonation system for a gas turbine engine having a longitudinal centerline axis extending therethrough, the pulse detonation system includes an air inlet duct in flow communication with a source of compressed air, the air inlet duct including at least one p... | 08/16/2005 |
| 6904750 | Integral pulse detonation system for a gas turbine engine A pulse detonation system for a gas turbine engine having a longitudinal centerline axis extending therethrough includes a rotatable cylindrical member having a forward surface, an aft surface, and an outer circumferential surface, where at least one stage of spaced... | 06/14/2005 |
| 6901738 | Pulsed combustion turbine engine A turbine engine has a circumferential array of combustion chamber conduits downstream of the compressor and upstream of the turbine. Means are provided for directing oxygen-containing gas from the compressor to the conduits so as to cyclically feed a gas charge int... | 06/07/2005 |
| 6886325 | Pulsed combustion engine A pulsed combustion device includes a support structure and a combustor carousel supported by the support structure and rotating relative thereto about an axis. The carousel has a number of combustion conduits in a circumferential array. Each conduit cyclically rece... | 05/03/2005 |
| 6877310 | Shock wave reflector and detonation chamber A shock wave reflector includes a number of reflective units positioned along a longitudinal direction and separated by a gap G. Each reflective unit has a length L. The length L and the gap G are governed by a relationship L+G≧λ. The variable λ characterizes a ... | 04/12/2005 |
| 6869049 | Method and apparatus for modulating flow separation An apparatus comprising: an aerodynamic surface adapted for producing an adverse pressure gradient in a fluid flow; and a first pulse detonation actuator disposed adjacent the aerodynamic surface and adapted for impulsively detonating a fuel/air mixture to produce a... | 03/22/2005 |
| 6691517 | Compound rotary internal combustion engine A turbine based engine that includes a mixture chamber, a combustion chamber, a stationary flow control barrier, and a turbine. The stationary flow control barrier is located between the combustion chamber and the turbine. The arrangement allows the syste... | 02/17/2004 |
| 6553752 | High pressure gas cycle and power plant Provided is a combustion chamber for producing a pressurized gas containing: a wall structure defining an interior chamber; a first reflecting surface for reflecting a pressure wave within said interior chamber; a second reflecting surface for reflecting said ... | 04/29/2003 |
| 6505462 | Rotary valve for pulse detonation engines A rotary valve for pulse detonation engines includes a rotor rotatively mounted in the forward end of the pulse detonation tube and a plurality of transfer plenums for receiving fuel and air arranged around the rotor and partially disposed over the forwar... | 01/14/2003 |
| 6370864 | Turbine engine with valve mechanism and integral combustion chamber A turbine based engine that includes a mixture chamber, a combustion chamber, a stationary flow control barrier, and a turbine. The stationary flow control barrier is located between the combustion chamber and the turbine. The arrangement allows the syste... | 04/16/2002 |
| 6301872 | High pressure gas cycle and power plant Provided is a combustion chamber for producing a pressurized gas having a wall structure defining an interior chamber, an explosion chamber disposed within the interior chamber, an annular chamber connected to the explosion chamber, a first reflecting sur... | 10/16/2001 |
| 6167693 | High pressure gas cycle and powder plant Provided is a combustion chamber for producing a pressurized gas containing: a wall structure defining an interior chamber; an explosion chamber disposed within the interior chamber and arranged such that compressed air can contact an exterior surface of ... | 01/02/2001 |
| 6128897 | Rotary internal combustion engine A rotary engine has a driving shaft and a driving rotor secured in rotation to the driving shaft. The driving rotor has one or several outwardly open rotor chambers distributed around its periphery and each having several inclined pressure application wal... | 10/10/2000 |
| 6035630 | Internal combustion rotary engine The internal combustion rotary engine comprises a stator (1) and a rotor (2) that are disposed so that the inner circumference of the stator (1), at least in certain pre-determined circumferential sectors thereof, sealingly surrounds the rotor (2). The st... | 03/14/2000 |
