高电压技术2017，Vol.43Issue(5)：1438-1444,7.DOI:10.13336/j.1003-6520.hve.20170428007
低地球轨道航天器表面充电及其环境影响因素
Surface Charging and Its Environment Influencing Factors for Low Earth Orbit Spacecraft
摘要
Abstract
Low earth orbit (LEO) spacecraft surface charging and ambient plasma distribution are affected by the space environment,and potential changes on the surface of the materials and the changes of the plasma distribution will affect the function of payloads on spacecraft.Consequently,we established a three-dimensional simulation model of surface charging of the low earth orbit spacecraft.The charging potentials of different materials and spacecraft frame and charging balance time were comprehensively analyzed in sunlight,eclipse,and the polar auroral oval.The research results reveal that,in the absence of sunlight,the surface differential charging is small and the frame potential is-0.7 V,while the surface differential charging can be up to 500 V as spacecraft passing through polar region.For comparison,the differential charging are tens of volts,and increases with the increases of the solar array bias potential when spacecraft is in sunlight.Moreover,the spacecraft wake shape changes with light conditions.The calculations can provide an important reference for scientific exploration load installation and active potential control.关键词
LEO航天器/PIC方法/材料充电/光照区充电/阴影区充电/极区充电Key words
LEO spacecraft/PIC methods/material charging/charging in sunlight/charging in eclipse/auroral charging引用本文复制引用
赵呈选,李得天,杨生胜,秦晓刚,王俊..低地球轨道航天器表面充电及其环境影响因素[J].高电压技术,2017,43(5):1438-1444,7.基金项目
国家自然科学基金(11605080 （）
11305084).Project supported by National Natural Science Foundation of China(11605080,11305084) （11605080,11305084）
