Exquadrum, Inc.

Elias Wilson

Eric E Schmidt

Korey R Kline

Kevin E Mahaffy

Philip C Pelfrey

Byron Henning

Lior Inberg

Landon Stevens

A hybrid rocket engine is described that achieves stable, highly efficient hybrid combustion by having a core flow of fuel-rich gas generator gases, with the flow being surrounded with an annular injection of oxidizer. The fuel-rich gas serves to vaporize and decompose the oxidizer, such as nitrous oxide, and prepare it for effective, stable combustion. In one embodiment, this is done at the head-end of a combustion chamber. The combustion products can then be expanded through a nozzle to create thrust. The engine can be an upper stage engine that can include modular thrust chambers and an integrated aerospike nozzle. The thrust chambers can be arranged in an array that rings the top of the aerospike nozzle.

Stable hybrid rocket technology

A high survivability fluid flow sensor includes a sensor housing defining an interior space. A sensor probe has a first end disposed within the interior space. The sensor probe also includes a second end opposite the first end outside the interior space. At least one load cell is disposed within the interior space and is operatively engaged with the first end of the sensor probe. The load cell is configured to detect loading on the sensor probe as a result of fluid flow impinging on the sensor probe adjacent to the second end. The sensor is operable to capture fluid flow data history through an over pressure event via the sensor probe, which exerts pressure upon the piezoelectric load cell(s), thereby enabling analysis of the wave fluid dynamics.

High survivability fluid flow sensor having a load cell for detecting loading on the sensor probe

A plasma heated arcjet wind tunnel is provided with tunnel segments in the arc-constrictor. The tunnel segments are fabricated of two concentric discs, an outer disc and an inner disc, with a groove formed in an outer edge of the inner disc. The two concentric discs which fit snugly into one another and are joined at their welded interface by a straight and angled butt joint formed between an inner edge of the outer disc and an outer edge of the inner disc. The straight and angled butt joints can be welded by electron beam welding, laser welding, or friction stir welding.

Plasma arcjet tunnel segments and method of making same

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Adelanto, CA, United States of America

Elias Wilson