中高轨道卫星热控涂层太阳吸收比退化快速估算方法  

Quick Estimation Method for Solar Absorptance Degradation of Thermal Control Coatings on GEO and MEO Satellites

作　　者：刘宇明[1] 刘宠 于强[1] 李宇[1] 王晶虎 刘业楠[1] 丁义刚[1] LIU Yuming;LIU Chong;YU Qiang;LI Yu;WANG Jinghu;LIU Yenan;DING Yigang(National Key Laboratory of Science and Technology on Reliability and Environmental Engineering,Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所可靠性与环境工程技术全国重点实验室,北京100094

出　　处：《航天器工程》2023年第6期89-94,共6页Spacecraft Engineering

摘　　要：根据中高轨道卫星热控涂层温度变化的周期性规律,提出了一种基于待定系数方法的热控涂层在轨性能变化估算方法,此方法仅利用温度数据,不需要卫星光照角、材料热容量等其他参数,降低了以温度反演热控涂层在轨性能变化的参数要求和计算难度。利用该方法,在参考了现有的卫星光学太阳反射镜(Optical Solar Reflector,OSR)太阳吸收比退化的在轨数据和地面试验数据的前提下,同时为计算数据的稳定性,文章估算了某卫星在轨运行580天至1670天约3年的时间里,卫星上OSR的太阳吸收比在轨性能变化情况,结果显示某卫星OSR在约3年的时间里,太阳吸收比仅增加了不到0.01,具有很好的稳定性。Based on the periodic temperature variations of thermal control coatings of MEO and GEO satellite,this paper presents an method for estimating in-orbit performance changes of these coatings using an undetermined coefficient approach.The method relies solely on temperature data,eliminating the need for satellite solar incidence angles,material thermal capacities,and other parameters,thus reducing the requirements and computational complexity for inversely estimating the in-orbit performance changes of thermal control coatings based on temperature.Using this method,and considering the existing in-orbit degradation data of the satellite optical solar reflectors(OSR)and ground experimental data as references,while also accounting for the stability of the computed data,We estimated the in-orbit performance variation of the OSR’s solar absorption ratio on a certain satellite over a period of approximately three years ranging from 580 days to 1670 days.The results indicate that the solar absorption ratio on the satellite’s OSR has only increased in by less than 0.01 over this approximately three-year period,demonstrating excellent stability.

关 键 词：中高轨道卫星 热控涂层 太阳吸收比 温度 在轨性能变化 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]