地球同步轨道星载光机电设备热控系统设计

某类地球同步轨道星载光机电设备跨舱板安装于卫星舱内外,二维转台绕两轴转动指向地面,加剧了吸收外热流的变化；内部光电器件发热量大,但传热路径复杂,对温度场的均匀度和稳定度有较高要求,这些给热控设计带来难度。针对光机电设备的工作、构型特性和在轨热环境,进行热控系统区域化设计,提出三级控温、多层安装环和热收集、输运通道等热控创新措施。通过NX TMG热分析软件对极端工况进行仿真分析,计算结果表明,热控方案正确有效,实现了多姿态变化光机电设备的温度场控制。

Thermal control system design of the geostationary orbitsatellite-borne optical-electro-mechanical instrument

Geostationary orbit satellite-borne optical-electro-mechanical instrument is mounted on the satellite crossing panel.The two-dimensional turntable revolves around the two axes and points to the ground,which aggravates the change of the orbital heat flux.The internal optical device parts bring high heat dissipation,but heat transfer path is complex.It is a challenge for thermal control.Owing to ensure communication quality,high temperature stability and equality are required.According to the work and configuration characteristics of the equipment and the rule of outer space thermal environment,the thermal control system was designed with regionalization method.Some innovative measures,such as three stage temperature control,multi-layer insulation components installation ring,and heat collection and transport channel,are put forward.Temperature distribution were computed with NX TMG software,the results of simulation show that the thermal control system can meet the requirement of attitude-varied terminal,and the thermal design is feasible.