星载激光雷达望远镜主次镜支撑结构设计与分析
Design and Analysis of the Supporting Structure Between the Primary and Secondary Mirrors of Space-borne Lidar Telescope
李路 1於天乐 2荣莉 2邢昆明 3张建军 2张陈哲 2赵明4
作者信息
- 1. 皖西学院 机械与车辆工程学院,安徽 六安 237012;中国科学院安徽光学精密机械研究所中国科学院大气光学重点实验室,安徽 合肥 230031
- 2. 皖西学院 机械与车辆工程学院,安徽 六安 237012
- 3. 中国科学院安徽光学精密机械研究所中国科学院大气光学重点实验室,安徽 合肥 230031
- 4. 淮南师范学院 电子工程学院,安徽 淮南 232038
- 折叠
摘要
针对星载激光雷达望远镜的设计要求,基于超轻量化主镜组件模型结构,从材料选择、结构形式及轻量化等方面对主次镜间支撑结构及组件进行详细设计,获得次镜组件重仅为 0.530 kg;主、次镜间支撑结构重仅为1.000 kg,最终获得望远镜整机结构,总重仅为10.600 kg.通过有限元建模、分析的方法,重点分析了主次镜的面型精度、相对位置关系受重力变形的影响及整机模态,保证了主次镜支撑面型RMS优于λ/40(λ@632.8 nm),整机系统具有较好的刚度和环境适应性.分析结果表明:望远镜主次镜支撑结构及组件满足设计要求,可为同类望远镜结构设计提供一定指导.
Abstract
In accordance with the design specifications of the space-borne Lidar Telescope,the supporting structure and components between the primary and secondary mirrors were meticulously engineered to align with the criteria of material selection,structural form and lightweight design.The secondary mirror components were manufactured with a mass of only 0.530 kg,while the supporting structure between the primary and secondary mirrors was constructed with a mass of 1.000 kg.This resulted in a final structure for the telescope with a total mass of only 10.600 kg.The surface figure and relative position of the primary and secondary mirrors,as well as the gravity deformation and mode of the entire machine,were subjected to intensive study through the method of finite element modelling and analysis.The surface figure root mean square(RMS)of the primary and secondary mirror is superior to λ/40(λ@632.8 nm).The design of the supporting structure and components for the primary and secondary mirrors was found to satisfy the specified requirements in terms of stiffness and environmental adaptability.The results demonstrate that the design objectives for the supporting structure and components of the primary and secondary mirrors have been achieved,thus providing a framework for the structural design of similar telescopes.
关键词
星载激光雷达/次镜组件/支撑结构/有限元分析/RMSKey words
space-borne lidar/secondary mirror module/supporting structure between primary and secondary mirror/element finite analysis/RMS引用本文复制引用
基金项目
安徽省教育厅自然科学研究重点项目(KJ2021A0945)
淮南师范学院校企合作项目(2023HX215)
皖西学院高层次人才项目(WGKQ2022013)
安徽省大学生创新创业训练计划项目(SS202210376137)
出版年
2024
国家科技期刊平台
NSTL
万方数据