论文部分内容阅读
航天器在地球同步轨道(GEO)运行时与空间中的大量等离子体相互作用,使航天器表面具有充电效应。当表面电位足够高时发生静电放电现象,产生的电磁脉冲对航天器内部敏感设备正常工作产生影响,甚至威胁航天器工作安全。文章基于欧空局开发的航天器静电仿真软件SPIS,基于PIC粒子分室算法对运行在地球同步轨道上的航天器表面充电效应进行仿真计算,得到航天器表面带电规律。结果表明,地球同步轨道航天器充电103s后达到电位平衡,最高电位达-1.05×104V;太阳能电池板外侧与内侧、内侧与航天器主体间存在数千伏电位差,易产生静电放电现象。
Spacecraft in geosynchronous orbit (GEO) operation with a large number of plasma space interaction, the spacecraft surface has a charging effect. Electrostatic discharge occurs when the surface potential is high enough. The generated electromagnetic pulse affects the normal operation of the sensitive equipment inside the spacecraft, and even threatens the safety of the spacecraft. Based on the spacecraft electrostatic simulation software SPIS developed by ESA, this paper simulates the surface charge effect of the spacecraft running on the geosynchronous orbit based on the PIC particle sub-compartment algorithm and obtains the law of surface charge on the spacecraft. The results show that the geosynchronous orbital orbital spacecraft reaches the potential balance after charging for 103s, and the maximum potential reaches -1.05 × 104V. There are several thousand volts potential difference between the outer side, the inner side and the inner side of the solar panel and the main body of the spacecraft, resulting in electrostatic discharge.