莫顿·锡奥科尔公司在航天飞机助推器接缝环境模拟装置中点燃了300磅的推进剂,以论证两个接缝间新设计的密封圈。预定在2月4日再进行一次全尺寸发动机点火试验。在这次试验中,两个接缝被冷冻到20°F,都没有发生漏泄,但压力没有达到 O形环要求的压力。新设计的密封圈不同于原 Morton Siocor ignited 300 pounds of propellant in the shuttle booster simulator to demonstrate the newly designed seal between the two seams. Scheduled on February 4 and then a full-size engine ignition test. In this test, both seams were frozen to 20 ° F without leakage, but the pressure did not reach the pressure required for the O-ring. The new design of the ring is different from the original