The purpose of the bulkhead is threefold: to seal the forward end of the motor, to retain the pyrogen igniter, and to act as a blowout plug in case of motor overpressurization (discussed earlier).

的目的，是三个方面：密封着年底汽车，保留热原点器，并充当井喷堵塞在案件机overpressurization （讨论以较早者为准） 。

Taking aft-end igniter design for a rocket motor for example,design methods for ignition sequence,amorce quantity estimation and nozzle closure were described respectively.

以某型号发动机尾部点设计为研究对象,对点设计、点药量的估算、喷管堵片的设计方法进行了阐述。