空间科学学报2026，Vol.46Issue(2)：392-402,11.DOI:10.11728/cjss2026.02.2025-0050
某舱外载荷设备热控设计及验证
Thermal Control Design and Verification of Extravehicular Load Equipment
摘要
Abstract
In order to solve the problem of frequency stability and transmission accuracy decrease caused by temperature fluctuation during on-orbit operation of an extravehicular load equipment,a high-ly efficient thermal control scheme is proposed which bases on passive thermal control as the main ap-proach and active thermal control as the auxiliary method.The scheme employs a single-phase liquid cold plate as the main heat dissipation surface,and 10-unit multi-layer insulation components for com-prehensive encapsulation.High thermal conductivity materials are utilized to achieve efficient heat con-duction.Simultaneously,heating sheets and TEC semiconductor ceramic sheets are used for precise tem-perature control.Through finite element simulation analysis of temperature distribution under both high and low temperature conditions and optimization design,the temperature variation of key components is controlled within±0.5 K.The ground constant-temperature thermal balance experiment and the in-or-bit data results indicate that this scheme effectively suppresses the interference of temperature fluctua-tions on the load equipment,significantly improves the overall temperature uniformity of the equipment.It enables photodiodes and other sensitive devices to operate within the optimal temperature range(25-50℃).The temperature change rate of temperature-sensitive devices on the extravehicular load equip-ment is better than 0.1 K·min-1,meeting the on-orbit stability requirements of high-precision time-fre-quency transmission systems.It can provide an important reference for the thermal control design of similar space load equipment.关键词
舱外/载荷设备/热控设计/有限元/热平衡实验Key words
Extravehicular/Load equipment/Thermal control design/Finite element/Thermal balance experiment分类
航空航天引用本文复制引用
齐晓巧,朱清淋,杨雷,乔志宏..某舱外载荷设备热控设计及验证[J].空间科学学报,2026,46(2):392-402,11.基金项目
中国载人航天工程空间站载荷研制项目(T0182411PN),博士科研启动基金项目(BKY-2022-11)和廊坊市科技支撑计划项目(2022011018,2022011024)共同资助 （T0182411PN）
