Factors Governing the Storage Life of Solid Propellant Rocket Motors
EXPLOSIVES RESEARCH AND DEVELOPMENT ESTABLISHMENT WALTHAM ABBEY (UNITED KINGDOM)
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The behaviour of composite and double-base propellant rocket motors on storage is reviewed and the problems of safety and deterioration in performance are considered with emphasis on the basic chemical and physical changes involved. Storage at elevated temperatures is shown to be very important and accelerated testing is used to predict the effects of much longer cool storage. Tests necessary to avoid eventual spontaneous inflammation include compatibility of ingredients and materials, temperatures of ignition, estimation of the rate of stabiliser consumption and its relation to the safe chemical life, and measurement of heat evolution to permit calculation of cook-off limitations on charge dimensions for double-base or similar reactive propellants.
- Solid Rocket Propellants