【摘要】 总结了固体燃料冲压发动机的发展过程和现状，分析其工作性能和应用于小口径弹药上需解决的关键技术，如突扩燃烧机理、燃料流量及燃速特性、散布控制、燃烧效率、补燃室设计等，以及解决相关问题的可能途径和方法，最后给出固体燃料冲压发动机应用于小口径弹药时的总体结构布置更多还原

【Abstract】 The development and present state of SFRJ are reviewed. The working performance and the key techniques used on minor diameter ammunition, such as sudden expansion combustion mechanism, fuel discharge and burning rate properties, dispersion controlling, combustion efficiency, aft combustion room design etc, and proper approaches to the questions, are analyzed. In the end, a kind of system design arrangement used on minor diameter ammunition is presented.更多还原