关键词: 比推力;固体火箭发动机;预测;经验方程

Abstract: This paper briefly evaluates the several prediction methods for solid rocket motor specific impulse used in foreign and our countries. According to Landsba-um method,a empirical parameter correlation formula for predicting specific impulse efficiency has heen derived from the statistic of high-altitude-simulation test data of different 44 solid rocket motors in America and China.This method has the advantages of both accuracy and simplicity, and can be used for the preliminary performance evaluation and the optimization design of a solid rocket motor.

Key words: Specific thrust;Solid rocket engine;Prediction;Empirical equation