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，该舱壁是三个方面：密封着年底汽车，保，充当井喷堵塞在案件电机overpressurization （讨论以较早者为准） 。