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Simulations of the Electrostatic Charging of ESA Communications Satellites

机译：Esa通信卫星静电充电的仿真研究

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The NASA Charging Analyzer Program (NASCAP) was used to investigate the electrostatic charging of three-axis stabilized satellites in geostationary plasma environments. Capabilities and limitations are discussed and the use of NASCAP in anomaly investigations is described. Three-dimensional charging simulations were performed for eclipse and sunlight conditions, with various plasma environments. The importance of three-dimensional effects is demonstrated. Differential charging on the solar arrays during eclipse and immediately following eclipse are predicted to be significant. Charging is strongly dependent on exposed material parameter values, since these determine the magnitudes of the seven basic components of the current to a surface. The effects of changes in the properties of exposed materials on the charging of the satellite were investigated to identify ways of reducing the differential charging. The associated program MATCHG was also used to investigate material response to charging environments (including laboratory electron beams) at a more basic level, without consideration of the geometrical or photoemission effects. It proves a useful tool in aiding the interpretation and reconciliation of material testing results before a full NASCAP run is undertaken.

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作者
Daly, E. J.; Burke, W. R.;
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年度 1987
页码 p.1-45
总页数 45
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Communication satellites; Computerized simulation; Electrostatic charge; Spacecraft charging; Eclipses; Solar arrays; Space plasmas; Spacecraft construction materials; Sunlight;

机译：通信卫星;计算机模拟;静电荷;航天器充电;日食;太阳能电池阵;空间等离子体;航天器建筑材料;阳光;

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Simulations of the Electrostatic Charging of ESA Communications Satellites

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