关键词: 肼发动机;单元推进剂;可靠性;使用寿命;卫星姿态控制

Abstract: A monopropellant hydrazine propulsion system for satellite, which has been successfully used to launch the China geostationary communication satellite, is presented. The propulsion system is long-life and high-reliability one. The preformance of this system and its components, the characteristic of critical components and reliability test, the compatibility test of materials, the control of microparticles and whole system firing test are also discussed. The reliability calculationhas been carried out based on the data in flight and ground tests.

Key words: Hydrazine engine;Monopropellant;High reliabilty;Service life;Satellite attitude control