MEO卫星双星并行真空热试验技术  

Technologies for parallel vacuum thermal test of twin MEO satellites

作　　者：许红阳 林士峰 马二瑞 张磊 XU Hongyang;LIN Shifeng;MA Errui;ZHANG Lei(Innovation Academy for Microsatellites,Chinese Academy of Sciences,Shanghai 201210,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201210

出　　处：《航天器环境工程》2021年第2期153-159,共7页Spacecraft Environment Engineering

基　　金：国家重大科技专项工程之第二代卫星导航系统。

摘　　要：在“北斗三号”MEO卫星双星并行研制过程中,综合考虑总体任务需求、卫星热控特点、热控方案及现有试验条件,提出“双星同时进罐,单星热平衡,双星热真空”的真空热试验方案,并通过仿真分析对因两星相互遮挡引起的附加热流进行修正,实现两颗卫星同时使用同一空间环境模拟设备即可完成热平衡及热真空2项试验。数据比较表明,热平衡试验结果对在轨卫星温度的预示较为准确,验证了上述双星并行真空热试验方法的可行性。In the parallel development of the twin Beidou-3 MEO satellites,a test scheme of“the two satellites entering the same tank at the same time,the thermal balance test for a single satellite,and the thermal vacuum test for the both satellites”is proposed with a careful consideration of the overall mission requirements,the thermal control characteristics and schemes of the satellites,as well as and the existing test conditions.Meanwhile,the additional heat flow caused by the shielding between the two satellites is corrected through a simulation analysis.The thermal balance test and the thermal vacuum test can be simultaneously completed in the same vacuum tank at one time.The flight data in orbit show that the thermal balance test result can be used for predicting the temperature of the satellites in orbit with a good accuracy,thus it can be said that the parallel vacuum thermal test method is practical.

关 键 词：双星 真空热试验 并行试验 外热流修正 仿真分析 在轨数据验证 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程]