北京三号A/B卫星热设计及验证  

Thermal Design and Verification of BJ-3A/B Satellites

作　　者：刘伟[1] 黄兴 李挺豪 范庆梅[1] 高宇纯 江海[1] LIU Wei;HUANG Xing;LI Tinghao;FAN Qingmei;GAO Yuchun;JIANG Hai(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2023年第3期93-100,共8页Spacecraft Engineering

摘　　要：针对北京三号A/B卫星频繁姿态机动带来局部热流剧烈波动且变化不确定的问题,以及主动指向超静平台高精度温度控制和卫星结构力热解耦设计需求,文章提出了基于姿态动态函数的机动全过程外热流仿真方法,散热面离散优化设计、高热流抑制多级隔热技术、主动指向超静平台核心设备超精、超稳以及和卫星结构力热解耦的卫星热设计方法,并对北京三号A/B卫星热性能进行了验证。北京三号A/B两颗卫星温度处于最佳工作范围内,为圆满完成任务提供了良好的保障,可以为对地对日频繁姿态变化卫星的热设计提供参考。In order to solve the problem of severe regional fluctuations and uncertain changes of external heat flow caused by frequent attitude maneuvering of BJ-3A/B satellites,and to meet the requirements of high-precision temperature control of vibration isolation and precise pointing system(VIPPS)and force-thermal decoupling design with active pointing satellite structure,the paper proposes a simulation method of external heat flow in the overall process of maneuvering based on attitude dynamic function,which is extended to a thermal design method for discrete optimization design of radiator,multi-stage thermal technology for suppressing high external heat flow,ultra-precision and ultra-stable temperature control of core equipment on the VIPPS,and mechanical thermal decoupling of satellite structure.The results show that the temperature of the two satellites of BJ-3A/B is within the bounds of optimal working range,which provides a good guarantee for the successful completion of the mission,and can also provide a reference for the thermal design of satellites with frequent attitude changes from earth to sun.

关 键 词：北京三号A/B卫星 频繁机动外热流算法 离散式散热面 多级隔热 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]