关键词: 固体推进剂火箭发动机;固体推进剂火箭;振动;预测

Abstract: Finite element method is used to calculate the natural frequency and vibration pattern of motor cases,grains and integral motors of a sample solid rocket. The natural vibration characteristics of the solid rocket is also analyzed. These data are useful in the design of SRM impact test and modal test. For examples, they are necessary in the selection of test e-quipment and measurement range, exciting mode and location, measurement point arrangement and holding device design , etc.

Key words: Solid propellant rocket engine;Solid propellant rocket;Vibration;Prediction