中高轨卫星热控涂层性能退化研究
Research on performance degradation of thermal control coating for medium and high orbit satellites
张筱娴 1沈苑 1张军 1李锴 1林士峰1
作者信息
- 1. 中国科学院 微小卫星创新研究院,上海 201210
- 折叠
摘要
针对中高轨卫星在轨时间长、末期温度增量大的特点,通过分析一颗 MEO导航卫星在轨5年的数据,结合卫星热控设计与轨道外热流,探究常用涂层OSR二次表面镜的等效综合退化特性,以及散热面设计对星上温度长期变化的影响,以优化热控设计,得到长寿命、高可靠的设计方案.研究结果表明,OSR的综合退化特性适用于工程中热控设计及温度预示,提出的外热流归一化处理方法适合用于涂层综合热控性能退化与在轨温升研究.文中散热面设计对温度长期变化的影响分析及相关建议对中高轨卫星长寿命设计有工程参考价值.
Abstract
Since the medium and high orbit satellites have long on-orbit time and obvious temperature rise at the end of life,equivalent comprehensive degradation performance of the common coating OSR is studied through analyzing 5-year in-orbit temperature data of a MEO navigation satellite.Its thermal control design and orbit solar flux are taken into account,and how the radiating surface design influences the temperature variation in long term is also discussed.In this way,thermal control design can be optimized,and long-life as well as highly reliable design scheme can be obtained.OSR's comprehensive degradation performance in this paper is appropriate for thermal control design and temperature prediction,which also shows that the method of solar flux normalization proposed here can be applied to study coating comprehensive degradation and in-orbit temperature variation.Analysis of the radiation surface design's influence on long-term temperature rise and some design suggestions based on it have engineering reference value for the long-life operation of medium and high orbit satellites.
关键词
卫星/热控涂层/退化/长寿命/热控设计Key words
satellite/thermal control coating/degradation/long life/thermal control design引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据