Abstract

In this paper, we report on our experimental findings regarding the release of easily condensing substances from certain structural materials utilized in spacecraft, and we evaluate the impact of thin condensate films on the integral optical coefficients of external thermal control coatings (TCCs) of spacecraft. To simulate the space environment and solar radiation, the experiments were conducted in a vacuum. We found that the flux densities of the components released from the materials’ surfaces reach 5.4 × 10^–7 g cm^–2 s^–1 and exhibit an exponential decrease over time. Furthermore, thin condensate films with a thickness of 100 Å can significantly degrade the integral optical coefficients of TCCs by tens of percent. These effects can alter the heat balance of the spacecraft. The experimental research methods used in this study can be applied to a broad range of materials, and the results have implications for the design and construction of various types of spacecraft.

中文翻译：

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航天器结构材料释放产物对其热控涂层光学性能的影响

摘要

在本文中，我们报告了有关航天器中使用的某些结构材料释放易冷凝物质的实验结果，并评估了冷凝薄膜对航天器外部热控涂层（TCC）整体光学系数的影响。为了模拟太空环境和太阳辐射，实验在真空中进行。我们发现材料表面释放的组分的通量密度达到5.4 × 10 ^–7 g cm ^–2 s ^–1并随时间呈指数下降。此外，厚度为 100 Å 的薄凝聚膜会使 TCC 的积分光学系数显着降低百分之几十。这些效应会改变航天器的热平衡。本研究使用的实验研究方法可应用于广泛的材料，其结果对各类航天器的设计和建造具有影响。