用于航天光照模拟的吊挂式米级金属反射镜热稳定性分析  

Thermal stability analysis of Meter-scale metal mirrors for space illumination simulation

作　　者：王丹艺 蒋山平 周盈 张鹏嵩 向艳红 李竑松[1] 杜嘉余 WANG Danyi;JIANG Shanping;ZHOU Ying;ZHANG Pengsong;XIANG Yanhong;LI Hongsong;DU Jiayu(Beijing Institute of Spacecraft Environment Engineering,China Academ of Space Technology,Beijing 100081,China)

机构地区：[1]中国空间技术研究院北京卫星环境工程研究所,北京100081

出　　处：《光学技术》2021年第4期385-389,共5页Optical Technique

摘　　要：近年,用于航天环境模拟的光照模拟设备备受关注,其主要包括太阳光照模拟器,灯阵光照模拟器、红外加热笼等。太阳光照模拟设备主要包括灯室、积分器、窗口、反射镜等,因立式光照模拟结构特殊性其金属反射镜需要采用吊挂式结构,结合光照模拟系统高辐照、高热能特点,会在金属反射镜表面产生较高热射能量,其载荷作用下的温度均匀性及热变形指标对光照模拟设备的辐照均匀性影响至关重要,即高辐照吊挂式金属反射镜对热稳定性要求较高。针对高辐照光照环境模拟设备使用的吊挂式米级金属反射镜热稳定性能进行系统性分析,主要针对立式光照模拟设备中使用的单块米级金属反射镜进行热稳定性分析,包括热仿真验证及分析、力学仿真分析、光学仿真分析,最终进行结构优化至满足高辐照光照模拟设备的辐照均匀性指标要求;提出的热稳定性分析方法对后续高辐照立式光照模拟设备中关键部件,吊挂式金属反射镜结构设计提供了指导方法。In recent years, lighting simulation equipment used in space environment simulation has attracted much attention, including solar lighting simulators, light array lighting simulators, infrared heating cages and so on. Solar illumination simulation equipment mainly includes lamp room, integrator, window, mirror, etc. Because of the particularity of vertical illumination simulation structure, the metal mirror needs to adopt hanging structure. Combined with the characteristics of high irradiation and high heat energy of illumination simulation system, it will produce higher heat radiation energy on the surface of metal mirror. The temperature uniformity and thermal deformation index under the load are very important to the irradiation uniformity of illumination simulation equipment, that is, the high irradiation hanging metal mirror has high requirements for thermal stability.The thermal stability of the hanging meter-level metal mirror used in high irradiation environment simulation equipment was systematically analyzed, and the thermal stability analysis of the single meter-level metal mirror used in vertical illumination simulation equipment was mainly conducted, including thermal simulation verification and analysis, mechanical simulation analysis and optical simulation analysis. Finally, the structure was optimized to meet the irradiation uniformity requirements of the high-irradiation illumination simulation equipment.The proposed thermal stability analysis method provides a guiding method for the structural design of the hanging metal mirror,a key component in the subsequent high irradiation vertical illumination simulation equipment.

关 键 词：光照模拟 吊挂式结构 米级金属反射镜 热稳定性 准直镜 立式结构 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]