纤维缠绕的航天飞机固体火箭发动机壳体将开始采用锁位设计件(Capture designfeature),使O形环密封圈不会由于接头的转动而移动位置。范登堡基地第一次航天发射用的轻质发动机,在高强度合金的锥限(tang)内侧加有锁位件。锥根围绕O形密封装置形成支撑,使接头在发动机的点火压力下不致转动。基地地勤人员正在组装四段石墨/环氧同筒段,预计组装工作在三月初完成。锁位件己在纤维缠绕研制发动机的两次静试车中成功地进行了试验,第三次地面试车原定于去年秋季进行,但由于马歇尔航天中心的结构试验失败而延后,从而也推迟了范登堡的航天飞机的发射日期。静试车试验又重新安排在2月13日,但由于挑战者号的爆炸, The fiber-wound Space Shuttle solid rocket motor casing will begin to use a Capture design feature so that the O-ring seals will not move due to the rotation of the joint. Vandenberg base for the first space launch with a lightweight engine, high-strength alloy in the cone limit (tang) with a locking inside. The cone root forms a support around the O-ring seal so that the joint will not rotate under the ignition pressure of the engine. Ground crew members are assembling four sections of graphite / epoxy with the barrel section, the assembly is expected to be completed in early March. The lock has been successfully tested in two static tests of fiber wound engine development. The third ground test was originally scheduled for fall last fall, but was postponed due to the structural failure of the Marshall Space Center, which delayed it Vandenberg’s space shuttle launch date. Static test test was rescheduled on February 13, but due to the explosion of the Challenger,