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Aerojet Rocketdyne of De, Inc.

United Technologies Corporation

William S Brown

Glenn Taylor Bennett

Thomas M Walczuk

Frederick E Dodd

Rodney Noble

Richard M Frey

A fuel manifold for a thrust chamber assembly includes a main fuel chamber which is generally frustro-conical in shape. The main fuel chamber provides a resonance frequency that is different than an acoustic resonance frequency of a combustion chamber.

Low velocity injector manifold for hypergolic rocket engine

A laser beam is utilized to ignite the fuel and oxidizer injected into a combustion chamber. An injector has a plurality of injector elements each injecting fuel and oxidizer into a flame holding zone adjacent the injector face plate where fuel and oxidizer are mixing at a rate to sustain flammability. The laser beam is introduced parallel to the injector face plate passing through the fuel and oxidizer mixing zones igniting the propellants. The propellants are ignited by having a laser beam tuned to a frequency to excite the oxidizer such that it will chemically combine with the fuel to form an ignition kernel in the flame holding zone. When a plurality of injector elements are ignited in this manner a controlled ignition process in the combustion chamber is achieved.

Laser ignition for liquid propellant rocket engine injectors

A laser ignition device is used for igniting propellants in a rocket engine. The laser ignition device has an injector housing with passages for flowing gaseous hydrogen and liquid oxygen to injector elements which mix the hydrogen and oxygen in a combustion chamber. A laser ignition system assembly is inserted through the housing. The propellants in the housing keep the housing and the laser ignition system assembly cool. A laser beam entering the laser ignition system assembly via a fiber optic cable passes though a lens for diverging the laser beam and a second lens for converging the beam. A portion of the laser ignition system assembly extends beyond the injector housing face plate into the combustion chamber of the rocket engine. A multi-faceted pyramid reflector at the tip of the laser ignition system assembly in the combustion chamber splits the converging laser beam into beamlets which emerge from the laser ignition system assembly parallel to the ignition face plate and ignite the propellant a plurality of points in the combustion chamber adjacent to the injector elements. A purging gas may be introduced inside of the laser ignition system assembly to help cool the laser optic therein and helps keep the laser optics clean. The purging gas exits the laser ignition system assembly into the combustion chamber.

A motor vehicle safety device allows the driver to hear nearby vehicles, so the driver can tell by ear when vehicles are in his blind spots, without significantly increasing the sound level inside the vehicle when there are no vehicles close to the host vehicle's blind spot. One benefit of this invention is the blind spot alert, or blind spot warning. Another benefit is that, because this invention communicates aural information from the host vehicle's environment to the driver, the driving experience is sensually richer and more interesting. The driver remains more alert and focused on the driving task. Elements of this invention, all of which are inexpensive, include directionally selective microphones () mounted on the vehicle, electronic signal processing (), and loudspeakers () that are mounted close to the ears of the driver.

Sound-based vehicle safety system

A heat exchange injector assembly includes a heat exchange element comprising a fuel sleeve, a liquid oxidizer post disposed in the fuel sleeve, and a multi-passage swirl member such as a double helix member, disposed in the liquid oxidizer post.

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Newbury Park, CA, United States of America

William S Brown