大型临近空间等离子体真空环境模拟技术研究

Research on Near Space Plasma Vacuum Environmental Simulation Technology

摘要:

航天器在轨运行时会因与空间等离子体之间的相互作用而影响其在轨运行的可靠性,进而影响航天器各项性能。通过传统空间飞行的方法进行研究分析,其代价巨大且不易实现,而采用地面真空环境模拟系统来进行模拟试验具有不可替代的优势以及重要意义。通过对组成等离子体环境模拟系统的真空容器、真空获得以及测控等三个子系统进行结构设计、仿真分析和数值计算等研究分析,结果表明：当真空容器的最大应力为113.2MPa,最大变形为0.59mm时,容器的结构稳定性可以满足模拟试验的要求；真空获得系统的抽气时间可满足试验需求；测控系统的结构设计以及人机交互性能满足试验过程中的使用需求。

Abstract:

The operation reliability of spacecraft in orbitis affected by the interaction with space plasma, research on the space enviroment by advanced testing method is important. It is costly to carry out research and analysis with space flight. Therefore, tests using ground vacuum environment simulation system are of significance. This paper proposed the structure design, simulation analysis and numerical calculation methods for the three subsystems of plasma environment simulation system, including vacuum vessel, vacuum acquisition and vacuum measurement and control. The simulation results show that the maximum stress of the vacuum vessel is , and the maximum deformation is , at the same time, vacuum technology index, structural stability and human-machine interaction performance of the system can meet the experimental research requirement.