Comparisons of Solid Propellant Motor Instability Predictions and Motor Firing Experience,
NAVAL WEAPONS CENTER CHINA LAKE CA
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This paper summarizes experiences at the Naval Weapons Center with solid propellant motor stability prediction and compares the predictions with results of motor firings. Analyses of five different motors are reviewed. Motor types range from a large booster motor which uses an aluminized propellant to a small tactical motor loaded with a reduced smoke propellant. The paper is organized by motor type with subsections to cover topics such as a description of the motor and propellant, the method used to obtain a stability prediction, and the results of comparing the stability prediction with data from motor firings. An important point to note when discussing these motor stability predictions is that the predictions calculate the net rate of change of acoustic energy within the motor.