摘要
超大口径在轨组装红外望远镜体积大、工作温度低,各组装模块间存在相互干扰,传统热控手段不能完全满足其热控需求。为达到热控指标,分析、利用日地-L2点轨道外部热环境特性,设计了一个面向超大口径在轨组装红外望远镜的五层遮阳罩。使用UG软件建立了该望远镜有限元模型,并进行了仿真分析。结果显示:来自太阳的1296W/m^2的热辐射经过遮阳罩的遮挡后,到达低温区的辐射强度降低到0.036 W/m^2,望远镜在遮阳罩展开后约210天时通过辐射被动制冷降温至50 K以下,满足热控需求。该设计为未来我国建造超大口径空间望远镜进行了热控技术探索,具有一定的参考价值。
Due to the large size and low operating temperature of the ultra-large diameter in-orbit assembly infrared telescope,mutual interference between assembly modules,the traditional thermal control methods cannot fully meet its requirements.In order to meet the proposed thermal design index,the external thermal environment analysis of the SE-L2 orbit was completed,and a five-layer sunshield for the ultra-large diameter in-orbit assembly infrared telescope was designed.The telescope finite element model was established and then simulated with the UG software.The simulation results show that after being shaded by the sunshield,the intensity of the thermal radiation from the sun,which is 1296 W/m^2,reduces to 0.036 W/m^2 when it reaches the low temperature area.210 days after the sunshield is unfolded,the temperature of this kind of telescope reduces to less than 50 K,through passive cooling radiation,meeting the demand of thermal control.This design is a valuable reference on the Chinese future construction of ultra-large space telescope because of the research on its thermal control.
作者
王洪亮
郭亮
熊琰
许博谦
于夫男
高燕
石启龙
Wang Hongliang;Guo Liang;Xiong Yan;Xu Boqian;Yu Funan;Gao Yan;Shi Qilong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2019年第12期192-197,共6页
Infrared and Laser Engineering
基金
国家重点研发计划(2016YFE0205000)
国家自然科学基金(61605203)
中国科学院青年创新促进会(2015173)
