A Prediction of Thermal Radiation Properties of Multilayer Thermal Control Material Based upon Polyimide Film for Space Use.
A Prediction of Thermal Radiation Properties of Multilayer Thermal Control Material Based upon Polyimide Film for Space Use.
复制标题
空间用聚酰亚胺薄膜多层热控材料热辐射性能预测。
DOI：
10.2322/jjsass.50.129
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Y. Nagasaka
中科院分区：
文献类型：
--
作者：
K. Fukuzawa;A. Ohnishi;Y. Nagasaka
水星轨道器使命任务要求航天器的热控材料在恶劣的热环境下具有稳定性。本文介绍了多层热控材料半球总发射率随温度变化和太阳吸收率α随入射角变化的预测方法。本方法是利用聚酰亚胺薄膜和气相沉积金属在0.25 ~ 100μm波长范围内的光学常数数据进行的。本文给出了三种基于聚酰亚胺薄膜背面涂铝的多层热控材料在173 ~ 773 K温度范围内的α值和在0 ~ 90°入射角范围内的α值。并将预测结果与实测结果进行了比较。这些结果在总体上是一致的。根据这些一致性，表明该预测方法是预测多层热控材料热辐射性能的有效手段。
Thermal control materials covering a spacecraft for Mercury orbiter mission are required to have stability against the severe thermal environment. This paper describes a prediction method for the temperature dependence of the total hemispherical emittance and the incident angle dependence of the solar absorptance α of multilayer thermal control materials. The present method is performed by using data for the optical constants of thin polyimide films and vapor-deposited metal in the wavelength region from 0.25 to 100μm. This paper provides the values of in the temperature range from 173 to 773K and α in the incident angle region from 0 to 90° of three types of multilayer thermal control material, which is based upon a thin polyimide film coated with aluminum on the back surface. The predicted results are compared with the measured ones. These results agree well each other on the whole. According to these agreements, it has been demonstrated that this prediction method is an effective means to predict thermal radiation properties of multilayer thermal control materials.