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。
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.
出处
《中国空间科学技术》
EI
CSCD
北大核心
1992年第1期33-38,共6页
Chinese Space Science and Technology
关键词
空间环境模拟
太阳反射器
性能分析
Space environment simulation
Solar reflector
Performace analysis