在对固体火箭冲压发动机的高度特性进行分析的基础上，分别研究了壅塞式和非壅塞式固体火箭冲压发动机性能调节特性及方案，并着重分析了非壅塞式固体火箭冲压发动机的燃气流量自适应调节原理与规律。分析计算表明：非壅塞式固体火箭冲压发动机不仅结构简单，且能明显提高发动机在非设计状态时的性能。 Based on the analysis of the height characteristics of solid rocket ramjet engines, the characteristics and schemes of performance tuning of ramjet and non-ramjet rocket ramjet engines were studied respectively. The gas flow rate adaptation of non-ramjet rocket ramjet engines was analyzed emphatically Regulation principle and law. The analysis and calculation shows that the non-plugged solid rocket ramjet is not only simple in structure, but also can obviously improve the performance of the engine in non-designed state.