火箭发动机防水膨胀装置１发明背景潜艇水下发射导弹通常把有足够压力的高压气体（下面简称为发射气体）充入装有导弹的潜艇发射管内，使导弹在离开发射管时达到很高的速度，其作用一方面是克服水下静压头，另一方面是将导弹推出水面并进入大气中。此后导弹的火箭发动机点... BACKGROUND OF THE INVENTION Submarine underwater launched missiles usually fill a submarine launch tube equipped with missiles with a high pressure gas of sufficient pressure (hereinafter referred to simply as a launching gas) so that the missile reaches a very high velocity when it leaves the launch tube , Its role is to overcome the underwater hydrostatic head on the one hand, and the other is to launch the missile surface and into the atmosphere. After the missile’s rocket engine point ...