柔性石墨在固体发动机高温密封上的应用研究  

A Practical Research on Flexible Graphite on High Temperature Seal of Solid Rocket Motor

作　　者：何君 李颖 余瑞 张路 余剑 吴敏[1] 邓康清[1] HE Jun;LI Ying;YU Rui;ZHANG Lu;YU Jian;WU Min;DENG Kangqing(Hubei Institute of Aerospace Chemical Technology,Hubei Xiangyang 441003,China)

机构地区：[1]湖北航天化学技术研究所,湖北襄阳441003

出　　处：《弹箭与制导学报》2020年第6期1-4,10,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：湖北省技术创新重大专项(2016ACA180)资助。

摘　　要：为了解决某固体发动机喷管高温密封问题,对性能优异的柔性石墨材料进行了研究。通过建立喷管处柔性石墨密封垫片的紧固力矩模型,得到了实现可靠密封的最小紧固力矩。同时对柔性石墨垫片的密封特性进行试验研究,验证了理论计算结果的正确性。最后通过发动机热试车和飞行试验验证了柔性石墨垫片在高温高压情况下的密封可靠性,为后续火箭发动机的高温密封设计提供了参考与借鉴。In order to solve the problem of high temperature seal of solid rocket motor nozzle,flexible graphite sealing material with excellent properties was studied.The minimum tightening moment was obtained by establishing a flexible graphite gasket tightening moment model.At the same time,the sealing characteristics of flexible graphite gasket were studied experimentally,which verified the correctness of the theoretical calculation results.Finally,the reliability of flexible graphite gasket under high temperature and high pressure was verified by the experiment of solid rocket motor,which provides a reference for the high temperature seal of solid rocket motor.

关 键 词：固体火箭发动机 柔性石墨垫片 高温密封 喷管 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]