中国空间科学技术

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模拟地球同步轨道辐照环境对光学太阳反射镜性能的影响

胡炳森,邱家稳,王滨,常天海   

  1. 兰州物理研究所 ,兰州物理研究所 ,兰州物理研究所 ,兰州物理研究所
  • 发布日期:1992-02-25

INFLUENCE OF SIMULATED SPACE ENVIRONMENT ON PERFORMANCE OF OPTICAL SOLAR REFLECTOR

Hu Bingsen Qiu Jiawen Wang Bin Chang Tianhai (Lanzhou Institute of Physics)   

  • Published:1992-02-25

摘要： 研究了模拟地球同步轨道辐照环境对卫星用温控涂层-光学太阳反射镜(OSR)性能的影响。对所研制的两类OSR 片进行的辐照试验项目有,真空紫外辐照、低能电子和两种能量的质子辐照。此外还进行了等离子体环境条件下的表面充/放电效应试验。经过相当于安装在地球同步轨道卫星南北极位置处,在空间七年所受到的电子、质子和紫外辐照总剂量的辐照后,导电型OSR 的太阳光谱吸收率α_s 由0.068增加到0.078,法向发射率ε_n 由0.83降低到0.72;而非导电型OSR的α_s 由0.066增加到0.085,ε_n 由0.82降低到0.76。表面充/放电试验的结果表明:导电型OSR 的充电电位仅在15～40V 之间,而非导电型OSR 的充电电位则可高达13kV。因此导电型OSR能有效地控制表面的充/放电现象。

关键词: 空间环境模拟, 太阳反射器

Abstract: The influence of simulated space environment on the properties of the satellite temperature-control coating-Optical Solar Reflector(OSR)is discussed.Two kinds of OSR sample are tested in the simulated space environ- ment.The simulated items include vaccum UV irradiation,low energy eletctron and two energy levels protons irradiation.The surface charge/discharge test is carried out under plasma environmental conditions.After the electron,proton and UV accelerative irradiation of total dosage equivalent to 7-year at the south or north pole of geosynchronous orbit satellite,the solar absorptance increases from 0.068 to 0.078 and the normal em ttance decreases from 0.83 to 0.72 for conductive OSR,while the absorptance increases from 0.066 to 0.085 and the nornal emittance decreases from 0.82 to 0.76 for nonconduc- tive OSR.Also,it is shown from the charge/discharge test that the surface charge potential is only 15～40 V for conductive OSR,but 1 to 10 kV for nonconductive OSR.Therefore the conductive OSR can control the surface charge/discharge effectively.

Key words: Space environment simulation, Solar reflector, Performace analysis