在喷嘴数目较少和扩张比较小时，增加燃气发生器工作压强补燃效率增加。
With the increasing of pressure of gas generator under less injector number and expansion ratio, combustion efficiency increase.
混合发动机燃烧效率比较低，使用预燃室和补燃室、合理设计喷注器以及采用扰流装置，可以提高燃烧效率；
The combustion efficiency of hybrid rocket motor is very low. In order to increase combustion efficiency, we can use vaporization chamber and mixing chamber.
所得的结论对全流量补燃循环发动机气-气喷注器的优化设计有一定的指导意义。
The results presented in this paper may provide valuable reference for the optimization design of the gas-gas injector for full flow staged combustion cycle engine.
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