压力指数对固体火箭发动机推力调节影响分析

结合固体火箭变推力发动机的结构特点,介绍了喉栓式变推力发动机的调节机理,完成发动机结构及数学模型的建立。并且对影响发动机调节的主要因素压力指数进行了详细分析。通过对正压力指数推进剂、负压力指数推进剂进行了分析计算和对比,获得推力调节对推进剂压力指数的要求及研究方向,对固体变推力发动机的进一步深化研究起到指导作用。

Influence of pressure exponent on thrust control of SRM

On the basis of variable thrust solid motor’s structure characteristic,thrust control mechanism of variable thrust pintle solid motor was introduced,and motor structure and math model are established.The influence of pressure exponent on thrust control was analyzed in detail.Through the calculation and contrast at both positive and negative pressure exponent,the thrust control characteristic at both positive and negative pressure exponent is gained.The research will support the design and development of variable thrust solid motor.