地球静止轨道LAR防静电白漆太阳吸收比变化分析  

Analysis of Solar Absorption Ratio Variation of LAR Antistatic White Paint in Geostationary Orbit

作　　者：文佳佳[1] 谢荣建[1] 钟思源 程锦铭 陈凡胜[1] WEN Jiajia;XIE Rongjian;ZHONG Siyuan;CHENG Jinming;CHEN Fansheng(Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China;Shanghai University of Technology,Shanghai 200093,China)

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]上海理工大学,上海200093

出　　处：《航天器工程》2024年第4期44-49,共6页Spacecraft Engineering

摘　　要：LAR防静电白漆具有低吸收发射比,能够喷涂于不同形状的物体表面,是重要的航天器热控系统组成部分。文章收集2颗地球静止轨道卫星的相机遮光罩外表面喷涂LAR防静电白漆的在轨7年和4年数据,结合遮光罩在轨热分析模型,得到白漆太阳吸收比随在轨时间的变化规律。研究结果表明:在轨2年后,白漆太阳吸收比由0.200退化为0.330,5年后变为0.357,年退化率由7.90%降低至0.55%,呈现逐年减小的趋势;根据该退化模型,预测10年后白漆太阳吸收比为0.357。利用热分析模型及在轨数据,能够得到白漆在轨退化性能,为航天器热控设计提供数据支撑,满足航天器长寿命及高效散热的需求。The LAR antistatic white paint has a low absorption emission ratio and can be sprayed on surfaces of different shapes,making an important component of the spacecraft thermal control systems.Data is collected over 7 years and 4 years of in-orbit operation of two satellite camera baffles coated with LAR antistatic white paint on the outer surface in geostationary orbit.By combining the data with the thermal analysis model of the baffle in orbit,the temporal variation of solar absorption ratio of white paint with in-orbit time is revealed.The analysis results demonstrate that after 2 years in orbit,the solar absorption ratio of white paint degrades from 0.200 to 0.330,and after 5 years,it changes to 0.357,with the annual degradation rate decreasing from 7.90%to 0.55%,showing a decreasing trend year by year.According to this degradation model,it is predicted that the solar absorption ratio of white paint will be 0.357 after 10 years.By using the thermal analysis model and in-orbit data in the paper,the in-orbit degradation performance of the white paint can be obtained,providing data support for thermal control design of spacecraft and meeting the requirements of spacecraft longevity and efficient heat dissipation.

关 键 词：地球静止轨道 LAR防静电白漆 太阳吸收比 退化性能 

分 类 号：V443[航空宇航科学与技术—飞行器设计]