用聚能切割法实现推力终止实验研究

Experimental investigation on thrust termination realized by the explosive incision method

对用聚能切割法实现固体火箭发动机推力终止的方案开展了实验研究,推力、压强测量用于观测冲击及压强过程,高速运动分析仪用于观测切割过程.有限的实验结果表明,聚能切割能在3～6 ms实现燃烧室的快速降压熄火,从而实现推力终止,但固体推进剂在一段时间之后复燃,产生微小推力;聚能切割会产生较大的冲击力.

Experimental investigation on thrust termination of solid rocket motor realized by explosive incision method was carfled out. Thrust and pressure were measured to observe the change process of impact and pressure, and high-speed motion analyzer was used to observe the incision process. The limited experiment results show that rapid depressurization and extinguishment in chamber can be realized in 3 ～ 6 ms by explosive incision method to accomplish thrust termination ,but the in a few seconds to generate a little thrust. Explosive incision can generate a large impact to rocket motor.