制动发动机

Retroengine's firing time must the accuracy control, the firing time differ 1 second, will cause the airship point of descent position difference kilometer.

动发动机的点火时间必须精确控，点火时间相差1秒钟，就会使飞船落点位置相差数公里。

The airship establishes the returns posture immediately, the returns cabin and the advancement cabin separates, the retrofire, starts from the outer space to the earth's surface returns.

飞船随即建立返姿态，返舱与推进舱分离，动发动机点火，开始从太空向地球表面返。