空间天文仪器反射镜材料优化与应用研究  

Study on Optimization and Application of Mirror Materials of Space Astronomical Instruments

作　　者：宋立强[1,2] 杨世模[1] 陈志远[1] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]中国科学院研究生院,北京100049

出　　处：《材料导报》2008年第12期5-9,共5页Materials Reports

基　　金：中国科学院国家天文台知识创新工程青年人才领域前沿项目

摘　　要：针对空间天文光学仪器反射镜材料的选择,论述了空间反射镜材料的优化方法,对比分析了反射镜材料的性能,并以空间太阳望远镜中的摆镜及Φ1m主镜研究为依托,建立了摆镜与主镜有限元模型,根据模型完成了反射镜材料的计算优化,得到了其力学及热分析结果。结果表明,反射镜的力学及动力学环境要求较高时,铍材最优,碳化硅次之;对于仪器温控范围较宽或对日观测时,微晶玻璃最优,碳化硅次之。根据反射镜材料优化结果,确定了以金属铍作为空间太阳望远镜中的摆镜材料,并进行了铍镜研制,检测结果满足技术要求。In order to choose the proper mirror material of space astronomical instrument, the rules and ways of space mirror materials optimization are discussed, and the performances of the mirror materials are analyzed and compared. The finite element models of the tip-tilt mirror and the Ф1m primary mirror of the space solar telescope are founded and analyzed in detail, and the analysis results of mechanical and thermal are gained. The optimization results show that the beryllium mirror is the best and silicon carbide mirror is the second when the high mechanical and dynamic performances are required; the zerodur mirror is the best and silicon carbide mirror is the second when the instrument has a wide temperature control range or observes the solar. At last, the beryllium is confirmed to be material for the tip-tilt mirror of the space solar telescope, and the beryllium mirror is manufactured. The measurement results satisfy the technology requirement.

关 键 词：空间天文仪器 空间太阳望远镜 反射镜 材料优化 铍镜 有限元 

分 类 号：TH75[机械工程—仪器科学与技术]