| GEO卫星整星分子污染初步预估 |
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| 引用本文： | 焦子龙,杨东升.GEO卫星整星分子污染初步预估[J].航天器环境工程,2008,25(6):526-532. |
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| 作者姓名： | 焦子龙 杨东升 |
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| 作者单位： | 北京卫星环境工程研究所,北京,100094 |
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| 摘 要： | 污染的长期累积效应是影响GEO卫星长寿命的重要因素。文章对GEO卫星整星非金属材料出气造成的分子污染进行了预估。根据扩散理论建立保守出气速率模型,基于自由分子流理论采用角系数方法计算污染分子视线传输,考虑了光化学沉积效应,对RTV胶、白漆出气造成的OSR片、太阳电池板、天线性能退化进行了估计,发现RTV胶的污染效应较为严重,白漆的污染影响可忽略不计。该结果可作为制定污染控制要求时的参考上限值。
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| 关 键 词： | 分子污染 污染预估 光化学沉积 角系数方法 |
| 收稿时间： | 2008/3/24 0:00:00 |
| 修稿时间： | 2008/10/26 0:00:00 |
A prediction of external molecular contamination on a GEO satellite |
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| Jiao Zilong and Yang Dongsheng.A prediction of external molecular contamination on a GEO satellite[J].Spacecraft Environment Engineering,2008,25(6):526-532. |
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| Authors: | Jiao Zilong and Yang Dongsheng |
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| Institution: | Beijing Institute of Spacecraft Environment Engineering;Beijing Institute of Spacecraft Environment Engineering |
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| Abstract: | The cumulative effects of contamination are an important factor for orbital life of GEO satellite. The molecular contamination from outgassing of non-metallic materials with respect to a GEO satellite is studied in this paper. A conservative outgassing model based on diffusion theory,line-of-sight transport model and contamination deposition model is built. The performance degradation of OSR and solar array is estimated by using view factor method with consideration of photochemical deposition effects. The prediction results indicate that RTV adhesive can produce severe contamination effects,while the effects of white paint can be neglected. |
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| Keywords: | molecular contamination contamination prediction photochemical deposition view factor method |
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