User's Manual for Nozzleless Rocket Motor Internal Ballistics Computer Program

摘要

The objective of this work was to develop a CDC 6400 FORTRAN computer program capable of accurately predicting the internal ballistics of motors designed for operation without nozzles. To accomplish this, previously obtained data were examined in detail. In addition, 12 motors were fabricated and test fired to augment the range of available test data. The computer program developed had to consider the effects of erosive burning, grain deflection, and incomplete metal combustion upon nozzleless motor performance. Input requires knowledge of motor geometry, propellant thermochemistry, base burn rate, and specification of erosive burning and grain deflection parameters. Comparisons of predicted and actual results show that where an adequate data base exists, with regard to erosive burning and grain deflection effects, accurate predictions will be provided by the computer program. (Author Modified Abstract)