Cordant Technologies Inc.

Alliant Techsystems Inc.

Thiokol Corporation

David K McGrath

Rodney L Willer

Daniel C Dombrowski

Thomas J Kirschner, Jr

A rocket nozzle assembly is provided for operatively coupling to a rocket motor. The assembly includes a nozzle insert structure having a converging-diverging passageway with a throat region. First and second thrust control cylinders are parallel to each other and rotatable about respective axes transverse to the passageway central axis. The first and second thrust control cylinders intersect the throat region and include respective grooves. A thrust control cylinder-rotating subassembly is operatively associated with the first and second thrust control cylinders to rotate the cylinders about their respective axes and move the grooves relative to the throat region. Movement of the grooves changes the effective cross-sectional throat area of the converging/diverging passageway at the throat region for controlling the thrust when the rocket nozzle assembly is operatively engaged with an operating rocket motor.

Rocket nozzle assembly having rotatable variable thrust control cylinders, and rocket assembly comprising the same

A family of high performance, large launch vehicle, solid propellants based on polyglycidyl nitrate elastomer binders. A clean, large launch vehicle, solid propellant based on a polyglycidyl nitrate elastomer binder, ammonium nitrate oxidizer and aluminum or magnesium fuel optimizes at low solids levels and produces essentially no HCl or chloride ion in the exhaust.

High performance large launch vehicle solid propellants

A family of high performance, space motor, solid propellants based on polyglycidyl nitrate elastomer binder, ammonium perchlorate oxidizer and beryllium or beryllium hydride fuel which do not require the presence of plasticizers. A high performance, space motor, solid propellant based on a polyglycidyl nitrate elastomer binder, ammonium perchlorate or hydroxy ammonium perchlorate and beryllium or beryllium hydride optimizes performance at low solids levels.

High performance space motor solid propellants

A family of high performance, clean, space motor/gas generator solid propellants based on polyglycidyl nitrate elastomer binder, ammonium nitrate oxidizer and small amounts of aluminum and/or boron and which do not require the presence of plasticizers. A high performance, space motor/gas generator solid propellant based on a polyglycidyl nitrate elastomer binder and ammonium nitrate oxidizer optimizes performance at low solids levels.

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Elkton, MD, United States of America

David K McGrath