Abstract: In order to improve the energy efficiency of solid rocket motors, a pulse separation device (PSD) with plug-in board and plug as the main structure is designed. This device is different from the traditional PSD, in which the material for plug-in board is tungsten infiltration of cooper and the plug is Polyoxymethylene(POM） or Polycaprolactam (MC). PSD achieves separation of the combustion chamber of the motor with its simple construction. The bursting pressure of plugs of different materials are tested by the hydraulic test, and the results are in good agreement with theoretical calculations. POM and MC can withstand pressure above 20MPa and open smoothly during the two-pulse operation. The bursting pressure of POM is 39.8MPa. The test results prove that PSD is feasible and has excellent reliability in double-pulse solid rocket motor.

Key words: Double-pulse solid rocket motor;Pulse separation device;Hydraulic test;Energy management

摘要： 为提高固体火箭发动机的能量利用效率，设计了一种以堵板、塞子为主体结构的脉冲隔离装置（PSD），该装置不同于传统的PSD，堵板选材为钨渗铜，塞子选用聚甲醛（POM）、聚己内酰胺（MC）工程塑料，PSD组件以其简单的结构实现了对发动机燃烧室的分隔。通过水压试验，测试了不同材料塞子的爆破压力，对比理论计算的爆破压力值，发现其结果有良好的一致性；POM和MC材料可以承受20MPa以上的压力冲击，并在二脉冲工作时顺利打开，其中，POM的爆破压力为39.8MPa。试验结果证明，PSD在双脉冲固体火箭发动机中可行且具有优良的可靠性。

关键词: 双脉冲固体火箭发动机;脉冲隔离装置;水压试验;能量控制