日-地系拉格朗日L1点太阳观测器热设计  

Thermal design of solar observer at L1 Lagrangian point in Sun-Earth system

作　　者：王祥[1,2] 李义[1] 杨献伟[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《中国光学》2013年第6期930-938,共9页Chinese Optics

基　　金：国家自然科学基金资助项目(No.40774080)

摘　　要：对将运行于日-地L1点的太阳观测器进行了热设计,重点论述了日-地L1点的轨道外热流计算和Lymanα日冕仪(LACI)反射镜M2光阱、Lymanα日冕成像仪(LADI)滤光片组件、CCD组件、电箱、观测器主体等部分的热设计方案。通过在探测器对日面设置集热板,将观测器的主动加热功耗降低了73%;选用预埋热管的设计方案解决了对日定向观测导致的框架温差问题。仿真分析结果表明,在对日高温工作、对日低温工作、低温存储、轨道转移等4个极端工况下,观测器各组件温度均满足指标要求。该热设计方案以较低的加热功耗,解决了太阳观测器在轨工作阶段的散热、轨道转移阶段的保温等问题,满足CCD焦面工作温度<-50℃的要求。To ensure the temperature requirements of the solar observer working at L 1 Lagrangian point , the thermal design for Lyman αCoronagraphy Imager（LACI） and Lyman αDisk Image（LADI） was carried out, and the heat flux of the orbit was calculated .The thermal designs of light trap , filter components , detector com-ponents, electric box, and entirety of the observer were discussed in details .By using collector panels settled in the side facing to the Sun , the active heating power could be reduced by 73%.In order to reduce the tem-perature gradient caused by long-term observation facing to the sun , a heat pipe was embedded in the frame . Simulation results show that all conditions meet the temperature indicator in 4 typical cases .The thermal de-sign system with a low active power solves many problems , such as the cooling of the observer in orbit , insula-tion during orbital transfer phase , and meets the working temperature requirement of below -50℃for a CCD plane .

关 键 词：热设计 Lymanα日冕仪 Lymanα日冕成像仪 太阳观测 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计] P111.41[天文地球—天文学]