航空相机扫描镜轻量化与支撑设计研究

Jieqiong Lin, Chenping Jiang, M. Lu, Qing Guo, Minghui Gao
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引用次数: 0

摘要

研究了400mm ×260mm尺寸扫描镜的轻量化设计及支撑结构。从材料选择、反射镜总成轻量化、结构设计柔性化等方面,选择了背部三点支撑方式来满足仪器刚度的要求。通过拓扑优化确定了反射器的轻量化形式,提出了一种柔性支撑结构。采用有限元方法对设计结果进行分析。结果表明,在重力载荷和6℃温度作用下,反射镜形状的均方根值分别达到11.8 nm和8.7 nm,满足λ/50 (λ ~(632.8))反射镜设计要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on Lightweight and Support Design of Scanning Mirror for Aerial Camera
The lightweight design and supporting structure of scanning mirror with size of 400mm ×260mm are studied. From the aspects of material selection, lightweight of mirror assembly, and flexible structure design, the three-point support mode of back is chosen to meet the requirement of instrument stiffness. The lightweight form of reflector is determined by topology optimization, and a flexible supporting structure of reflector is proposed. Finite element analysis is used to analyze the design results. The results show that the RMS values of reflecting mirror shape under the action of gravity load and 6°C temperature are up to 11.8 nm and 8.7 nm, respectively, which meets the requirements of λ/50 (λ ~ (632.8) mirror design.
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