Ф2020 mm口径空间红外相机主反射镜设计  

Ф2 020 mm Aperture Space Infrared Camera Main Reflector Design

作　　者：翟岩 梅贵[2] 江帆[2] 浦前帅[2] ZHAI Yan;MEI Gui;JIANG Fan;PU Qian-shuai(Changchun University of Science and Technology,Changchun 130022,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]长春理工大学,吉林长春130022 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《发光学报》2018年第8期1170-1176,共7页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61405191)资助项目~~

摘　　要：针对某Ф2 020 mm主反射镜,为了保证空间红外相机主反射镜具有良好的面形精度及较高的一阶固有频率,对其支撑结构进行了针对性研究。根据反射镜的尺寸形状和面形精度要求,确定了反射镜的背部支撑方案。设计了采用两种柔性方式串联的柔性结构用于主反射镜的支撑,并确定了柔性环节的应力最大位置。采用有限元方法对反射镜组件在力热耦合状态下进行了仿真分析,结果表明反射镜全口径最大面形误差RMS值为27.02 nm,组件一阶谐振频率为95 Hz。对相机处于装调状态装星状态时反射镜的面形进行了有限元分析,结果表明满足总体对主反射镜的设计要求。For a Ф2 020 mm main mirror,in order to ensure that the spatial infrared camera main reflector has good surface shape accuracy and high first-order natural frequency,a targeted study of its supporting structure was conducted. According to the size of the mirror shape and shape accuracy requirements,the back of the mirror support was determined. It was designed to support the main reflector that a flexible structure with two flexible ways connected in series,and determined the maximum stress position of the flexible link. The finite element method was used to simulate and analyze the mirror assembly in the coupled state of force and heat. The results show that the RMS value of the maximum surface shape error of the mirror is 27. 02 nm and the first-order resonant frequency of the component is 95 Hz. The finite element analysis was performed on the shape of the mirror when the camera was in the mounted state,and the analysis results showed that the design requirements of the main reflector were satisfied.

关 键 词：红外系统 大口径 主反射镜 有限元分析 

分 类 号：V445.8[航空宇航科学与技术—飞行器设计]