星载高精度偏振扫描仪热控设计与验证  

Thermal control design and verification of satellite-borne high-precision polarization scanner

作　　者：桂利佳[1] 张维丝 徐文杰 高洪达 李言青 凌明椿 GUI Lijia;ZHANG Weisi;XU Wenjie;GAO Hongda;LI Yanqing;LING Mingchun(Shanghai Institute of Satellite Engineering,Shanghai 201109,China;Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]上海卫星工程研究所,上海201109 [2]中国科学院安徽光学精密机械研究所,合肥230031

出　　处：《航天器环境工程》2024年第2期160-166,共7页Spacecraft Environment Engineering

基　　金：国家重点研发计划项目(编号:2022YFB3903203-2)。

摘　　要：偏振扫描仪安装于卫星对地板,周围有其他载荷的遮挡,热环境复杂,是卫星热控设计的难点。文章根据扫描仪不同部组件的控温要求设计热控方案,包括:主光学组件与框架隔热并包覆多层隔热组件;红外探测器热沉、头部电路盒分别设计独立的散热路径,通过外贴热管连接辅助散热板散热;结合电加热主动控温;在主要部位安装隔热垫。该热控方案已通过热平衡试验在地面的考核验证,在轨遥测数据显示:主光学组件温度控制在(16±1)℃,头部电路盒温度控制在6~8℃,红外探测器热沉温度控制在(-22±1)℃,满足扫描仪各项温度指标要求。以上表明该热控方案合理有效,对同类型光学载荷的热控设计及优化具有借鉴意义。The polarization scanner is mounted on the satellite floor and surrounded by multiple other loads.Therefore,due to its complex thermal environment,it is of difficulty for satellite thermal control design.According to the thermal control requirements for each component of the scanner,a thermal control scheme was designed in this paper.The scheme includes:ensuring the insulation between main optics and the frame together with multiple layers of insulation components cladded;introducting independent heat dissipation paths for the infrared detector heat sink and the head circuit box,respectively,with an external heat pipe connected to the auxiliary heat dissipation panel;inplementing active temperature control electric heating;installing heat insulation pads in key areas.The thermal control scheme has passed the ground-based thermal balance test.Orbital telemetry data show that the temperature of the main optics is controlled at(16±1)℃,the temperature of the head circuit box is controlled between 6℃and 8℃,while the temperature of the infrared detector heat sink is controlled at(-22±1)℃:those all meeting the temperature requirements of the scanner.The above indicates that the thermal control scheme is reasonable and effective,which may provide a reference for the thermal control design and optimization of optics payloads of similar types.

关 键 词：高精度偏振扫描仪 热控设计 热仿真 热试验 在轨飞行 

分 类 号：V447[航空宇航科学与技术—飞行器设计]