摘要
以风云三号(FY-3)卫星为研究对象,提出了一种卫星单元肼推进系统落压工作特性的数值仿真法。根据简化的推进系统物理模型,建立了贮箱、管路、自锁阀与过滤器,以及推力器的仿真数学模型。计算了四种不同工况下的落压工作特性。计算结果与FY-3卫星推进系统热试车试验数据的比较表明,两者相当吻合。由此验证了该数值仿真法的准确性和工程推广应用的可行性。
The numerical simulation for blowdown characteristics of satellite hydrazine propulsion system was investigated while FY-3 meteorological satellite was served as an example in this paper. The simulation models of tank, pipe, self-locking valve and filter, and thruster were established according to the simplified physic model of the propulsion system. The blowdown characteristics were computed under four operation modes. The comparison of calculation results and hot-firing data of the propulsion system for FY-3 satellite showed that they were very similar. Thus the accurate of the numerical simulation and application feasibility in engineering were proved.
出处
《上海航天》
北大核心
2007年第2期42-46,共5页
Aerospace Shanghai
关键词
卫星肼推进系统
落压工作特性
数值仿真
热试车
Hydrazine propulsion system of satellite
Blowdown characteristic
Numerical simulation
Hot-firing
