柔性支撑式空间反射镜胶接应力分析与消除  

Analysis and elimination of adhesive bonding force of flexible supported space mirror

作　　者：武永见[1,2] 刘涌 孙欣[1,2] Wu Yongjian;Liu Yong;Sun Xin(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Beijing Key Laboratory of Advanced Optical Remote Sensing Technology,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]先进光学遥感技术北京市重点实验室,北京100094

出　　处：《红外与激光工程》2022年第4期326-330,共5页Infrared and Laser Engineering

摘　　要：空间光学遥感器不断朝着更高轻量化率的方向发展,传统的装框支撑难以满足系统要求。基于运动学原理的Bipod柔性支撑结构具有良好的力热环境适应能力,在空间光学遥感器的反射镜支撑中得到越来越多的应用。为了有效卸载装配应力,Bipod柔性支撑结构一般通过光学胶与反射镜进行连接,但是光学胶在固化过程中不可避免地存在收缩应力。此外,环境温度的波动以及热真空试验也有可能导致胶接应力的变化,严重时会对反射镜面形造成不利影响。文中针对某Bipod柔性支撑式次镜组件,分析了胶缩对面形的影响,并针对真空放气试验后的面形下降问题,采用消应力与热浸泡相结合的方式有效解决了面形下降的问题,为该类光学胶的空间环境应用提供技术支撑。The space optical remote sensor is developing in the direction of higher lightweight rate,but the traditional framing support is difficult to meet the requirement of the system.Bipod flexible support structure based on kinematics principle has good adaptability to mechanical and thermal environment,and has been more and more applied in mirror support of space optical remote sensor.In order to effectively remove the assembly stress,the Bipod flexible supporting structure is usually connected to mirror by optical glue.But there is inevitable shrinkage stress in the curing process of optical glue.In addition,the fluctuations of the ambient temperature and the thermal vacuum test could lead to additional force change,which will have an adverse impact on the shape of the mirror.In this paper,the influence of glue shrinkage on the surface shape of a Bipod flexible support secondary mirror assembly was analyzed.Aiming at the surface shape decline after vacuum deflation test,the combination of stress relief and hot immersion was used to effectively solve the surface shape decline problem,so as to provide technical support for the space environmental application of this kind of optical glue.

关 键 词：空间遥感器 空间反射镜 柔性支撑 胶接应力 

分 类 号：TH751[机械工程—仪器科学与技术]