As one of the malfunction forms of launch vehicle in the waiting-for-lift-off phase,the launch vehicle inclined to a certain angle endangered the safety of spacemen in the spacecraft badly.

• 倾倒故障作为火箭待发段的一种故障形式,严重地威胁着航天员的安全。待发段倾倒应急救生的关键在于及时获取准确可靠的箭体姿态与倾倒信息,为指挥员实时提供可靠的逃逸判决依据。