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,保留热原点火器,并充当塞在案件机overpressurization (讨论以为准) 。