中国空间科学技术

中国空间科学技术

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热控涂层太阳吸收比α_s随入射角的变化及其影响

华诚生，顾天铮   

  1. 北京空间飞行器总体设计部
  • 发布日期:1994-10-25

VARIATION OF SOLAR ABSORPTANCE α_s OF THERMAL CONTROL COATING WITH ANGLE OF INCIDENCE AND ITS EFFECT

Hua Chengsheng; Gu Tianzheng(Beijing Institute of Spacecraft System Engineering,Beijing 100086)   

  • Online:1994-10-25

摘要： 介绍了测量太阳吸收比αｓ。的稳态卡计法原理。用这种方法测量了一些热控涂层的太阳吸收比随温度和入射角的变化。测量结果表明，对二次表面镜及铝光亮阳极氧化涂层，太阳吸收比随人射角的变化是显著的。根据这些测量结果，计算了某些类型卫星吸收的太阳热流量。计算结果表明，对采用二次表面镜或铝光亮阳极氧化涂层的卫星，在计算吸收的太阳热流量时，必须考虑太阳吸收比随人射角的变化。

关键词: 热控涂层, 吸收比, 辐射测量, 卫星

Abstract: his paper describes the theory of the steady state caloric method for measuring solar absorptance as The variation of solar absorptance of some thermal control coatings with the temperature and the angle of incidence was measured by this method. The measured results indicated that the variation of solar absorptance with the angle of incidence is distinct for second s urface mirrors and bright anodized aluminum coatings. The absorbed solar flux of some satellites was calculated on the basis of these measured results. The calculation showed that the variation of solar absorptance with the angle of incidence must be considered to calculate precisely the absorbed solar flux for the satellites with second surface mirror or anodized aluminum coating.