Abstract: Based on the ageing character study for the flexible joint,the structural reliability was studied.The probabilities of the moment unsatisfing the thrust vector control(TVC)system needs,the shear failure of the elastomer ring and the shear failure of the bonded interface were calculated

Key words: Solid propellant rocket engine;Flexible joint;Structural reliability;Aging

摘要： 测试了某固体火箭发动机柔性接头在使用环境贮存１０年的老化性能，在此基础上，研究了柔性接头结构的可靠性问题，得到了柔性接头贮存老化前后摆动力矩不满足使用要求、弹性件破坏及粘接界面破坏的概率。

关键词: 固体推进剂火箭发动机;柔性接头;结构可靠性;老化