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Original Articles

Nonmetallized Solid Propellant Combustion in Standard and High Acceleration Environments

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Pages 75-83 | Received 27 Jun 1974, Published online: 16 May 2007
 

Abstract

Nonmetallized double-base propellant and ammonium perchlorate (AP)/binder sandwich combustion were studied in standard and high acceleration environments in order to determine the acceleration sensitive combustion mechanisms. Experimental techniques used were high speed motion pictures, two-color schlieren, and centrifuge mounted combustion bombs. It was found for double-base propellant that the temperature increased continuously from the surface into the visible flame. Acceleration induced burning rate augmentation occurred and resulted in elimination of the visible flame. A modified surface or subsurface zone is proposed as the acceleration sensitive combustion mechanism. AP/binder sandwich combustion was also found to be acceleration sensitive with binder flow-AP interactions proposed as the mechanism.

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