中国光学, 2013, 6 (6): 930, 网络出版: 2013-12-24
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
热设计 Lyman α日冕仪 Lyman α日冕成像仪 太阳观测 thermal design Lyman α Coronagraph Image(LACI) Lyman α Disk Image(LADI) solar observer
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Lyman α日冕仪(LACI)反射镜M2光阱、Lyman α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。
Abstract
To ensure the temperature requirements of the solar observer working at L1 Lagrangian point, the thermal design for Lyman α Coronagraphy Imager(LACI) and Lyman α Disk Image(LADI) was carried out, and the heat flux of the orbit was calculated. The thermal designs of light trap, filter components, detector components, 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 temperature 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 design system with a low active power solves many problems, such as the cooling of the observer in orbit, insulation during orbital transfer phase, and meets the working temperature requirement of below -50 ℃ for a CCD plane.
王祥, 李义, 杨献伟. 日-地系拉格朗日L1点太阳观测器热设计[J]. 中国光学, 2013, 6(6): 930. WANG Xiang, LI Yi, YANG Xian-wei. Thermal design of solar observer at L1 Lagrangian point in Sun-Earth system[J]. Chinese Optics, 2013, 6(6): 930.