长寿命卫星热控涂层性能退化及其对卫星热特征的影响

Degradation Performance of Long-life Satellite Thermal Coating and Its Influence on Thermal Character

分析了卫星热控涂层在轨运行时所面临的复杂的空间辐照环境,在国内外试验数据的基础上,给出了热控涂层在空间辐照环境作用下的退化模型,得到了退化前后热控涂层光学性能变化的表达式,预测了几种常用热控涂层在空间环境下的退化结果。并以一颗地球同步轨道模拟星为例,分析热控涂层性能退化对卫星热特征尤其是对卫星红外辐射特性的影响。

Analyze the complex space radiation environment of the thermal coatings, degradation models of the optical properties of the thermal coatings due to the space environment interaction are proposed on the basis of experimental results. The degradation of several common thermal coatings such as S781, OSR ,and F46 are forecasted for 30 years in space environment. With a geosynchronous orbit satellite as example, paper analyzes the changes of satellite infrared radiation characteristics which due to the degradation of thermal coating.