摘要
某卫星运行于深空远距离逆行(Distant Retrograde Orbit,DRO)轨道,星上科学载荷软X射线成像望远镜(Soft X-ray Imaging telescope,SXI)由铅玻璃编码板匹配大面积CMOS组成,CMOS需工作在-30℃低温环境。由于SXI视场较大、CMOS功耗较高,且DRO轨道热环境复杂,为保障SXI长期工作的稳定性和可靠性,论文设计了多种热控方案,并采用数值模拟方法建立了热物理模型,对比分析了不同安装方式、有无热管和散热板以及不同热控涂层措施下的SXI温度场,确定了SXI与卫星舱板隔热安装,CMOS组件通过四根热管将热量传导至散热板散出,以及外框包裹多层隔热组件,散热板喷涂白漆等热控措施。仿真结果表明,SXI热设计符合温控要求,温度满足热控指标,热设计合理,为后续热平衡试验和整星热试验的热控实施提供了参考。
The satellite operates in deep space DRO orbit(Distant Retrograde Orbit),and the on-board science payload Soft X-ray Imaging telescope(SXI)consists of a lead glass coding plate matched with a large-area CMOS.Due to the large field of view of the telescope and the high power consumption of the CMOS,the thermal environment in the DRO orbit is very complicated,while the CMOS needs to work in a low temperature environment near-30℃.In order to guarantee that SXI can be used reliably for a long period of time in the deep space orbit environment,a variety of thermal design schemes have been developed.In addition,finite element comparative simulations have been carried out on the temperature field under these methods:heat insulation and heat conduction mounting options,with or without heat pipes and heat sinks,and a range of thermal control measures.The installation of heat insulation for the SXI and satellite module was finalized,the connection option of CMOS components with four heat pipes to disperse internal power consumption through the heat sink was identified,and multi-layer heat-insulating components were wrapped around the outer frame and white paint sprayed on the heat-sink panels.The simulation results demonstrate that the thermal design of the SXI meets the temperature control requirements,the temperature value satisfies the thermal control index,and the thermal design is reasonable.It provides a reference for the implementation of thermal control in subsequent thermal balance tests and thermal tests of the whole satellite.
作者
秦海玲
李新乔
张大力
杨生
文向阳
冯骅
熊少林
刘晓静
QIN Hailing;LI Xinqiao;ZHANG Dali;YANG Sheng;WEN Xiangyang;FENG Hua;XIONG Shaolin;LIU Xiaojing(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)
出处
《真空与低温》
2025年第6期718-725,共8页
Vacuum and Cryogenics
基金
国家自然科学基金(12173038、42474222、1177525)
中国科学院战略性先导科技专项(XDA15360000、XDA15360102)。
关键词
DRO轨道
软X射线成像望远镜
热控设计
热仿真分析
DRO orbit
soft X-ray imaging telescope
thermal control design
thermal simulation analysis
