关键词: 液体推进剂火箭发动机;密封;高压密封;密封材料;密封试验

Abstract: In order to achieve a higher reliability of high-pressure liquid rocket engine sealing structure, a systematic study on high-pressure sealing structure was conducted. In accordance with the sealing structure safe-working condition:sealing pressure ratio does not drop under the high pressure of sealing medium, it was proposed that a new sealing structure should be self-tight type.Several new sealing-structures were designed and 12 were proved to be reliable with high performance and have been used in many types of rocket engines economically.

Key words: Liquid propellant rocket engine;Sealing;High pressure sealing;Sealing material;Sealing test