Structural Design of Carbon Fiber-reinforced Plastics Barrel for Space Remote Sensing Camera

Guo-rui, 任国瑞 Ren; Chuang, 李创 Li; Wei, 王伟 Wang; Yong-jie, 解永杰 Xie; Liang, 徐亮 Xu; Yongjie, 王永杰 Wang; Xuewu, 樊学武 Fan

doi:10.3788/gzxb20194808.0822001

Cited by 2 publications

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“… 15 , 16 The ply thickness of the barrel for space remote sensing camera composite was optimised by Xie et al, 17 and a reasonable composite material ply sequence was determined. The composite barrel for a space camera was also optimised by Ren et al 18 Although optimisation has been widely used in the structural design of space optical instruments, vehicles 19 and submersible, 20 there is little research on the optimisation of composite structures for ground-based telescope optical instruments.…”

Section: Introductionmentioning

confidence: 99%

Lightweight cylindrical composite shell structures to support optical instruments in extremely large telescopes: A case study

Zheng

Zhang

Wang³

et al. 2021

Science Progress

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Aiming at the issues of heavy weight and insufficient structural performance of optical instrument supporting structures in extremely large telescopes, the Wide-Field Optical Spectrograph (WFOS) of the Thirty Meter Telescope (TMT) was taken as a case to study. In order to develop lightweight structures which satisfies the design requirements for mass and stiffness, a design scheme of cylindrical composite shells supporting structure was proposed and their finite element models were developed. A size optimisation and a ply sequence optimisation of the composite structure were carried out. The structures before and after optimisation were evaluated from the aspects of mass, displacement, failure index and fundamental frequency. After the optimised design, the mass of the optimised WFOS cylindrical composite shell structure is reduced to approximately 50%, but its maximum displacement (0.513 mm) and fundamental frequency (8.275 Hz) are nearly unchanged. The study indicates that a cylindrical composite shell structure is an efficient structural form for large optical instruments.

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