“北京三号”C卫星星敏感器热分析及试验验证  

Thermal analysis and experimental verification of BJ-3C Satellite star sensor

作　　者：许峰 房红军 高宇纯 宋云飞 党昊 范庆梅[1,2] XU Feng;FANG Hongjun;GAO Yuchun;SONG Yunfei;DANG Hao;FAN Qingmei(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;National Key Laboratory of Spacecraft Thermal Control,Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;DFH Satellite Co.,Ltd.,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]北京空间飞行器总体设计部航天器热控全国重点实验室,北京100094 [3]航天东方红卫星有限公司,北京100094

出　　处：《先进小卫星技术(中英文)》2025年第2期73-81,共9页Advanced Small Satellite Technology

摘　　要：针对“北京三号”C卫星星座对微型星敏感器高温度稳定性、高一致性和力学弱耦合性的要求,以及卫星在轨复杂姿态机动的特点,在多姿态遍历外热流分析的基础上,提出了星敏感器的定向独立散热、细小热管传热和多点分级控温的热控方案,开展了温度场及热力耦合仿真分析,并进行了地面热试验验证和在轨飞行验证.在轨飞行数据显示:星座所属的8台星敏感器温度均控制在19.25~20.75℃之间,单台星敏温度波动在±0.5℃内,四星星敏温度水平一致性良好,满足设计指标要求,为后续同类卫星星敏感器的热设计提供了参考.According to the requirements of high temperature stability,high consistency,weak mechanical coupling and the characteristics of satellite complex in-orbit attitude maneuver for the micro-star sensor of the BJ-3C Satellite constellation,a thermal control scheme was proposed based on the multi-attitude traverse external heat flow analysis.Directional independent heat dissipation,micro-heat pipe heat transfer and multi-point hierarchical temperature control were proposed in this scheme,which was analyzed by temperature field and thermal-mechanical coupling simulation and verified by ground thermal test and in-orbit flight.The in-orbit flight data show that the temperature of the eight star sensors belonging to the constellation is controlled within 19.25~20.75℃.The temperature fluctuation of the single star sensor is within 0.5℃.The temperature level consistency of the four stars is good.The design specifications fully meet the thermal design requirements.It provides a reference for the thermal design of star sensors on subsequent similar satellites.

关 键 词：“北京三号”C卫星星座 星敏热控 定向独立散热 多点分级控温 热力耦合 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]