强激光与粒子束2012，Vol.24Issue(1)：46-50,5.DOI:10.3788/HPLPB20122401.0046
可折叠展开式伞状龙骨聚光器的聚光性能
Concentration performance analysis of deployable umbrella-shaped keel concentrator
摘要
Abstract
In order to improve the concentration efficiency and eliminate the optical aberration, the umbrella-shaped keel structure has been introduced into the deployable concentrator. The concentration performance of deployable solar paraboloid concentrator with concentration power of 100 kW working in the space environment has been investigated with the software ANSYS and ZEMAX. Under the influence of film tension and solar wind, the maximum stress of umbrella fabric is 1. 66 Mpa, which is much smaller than the threshold intensity of Kevlar and Ti-6A1-4V keel materials. The maximum deformation of umbrella fabric is 0. 941 mm, the radius of the spot size is 6. 37 cm, and the geometric concentration ratio can achieve 5 917, only 1. 25% lower than the ratio of the standard parabolic concentrator. The results reveal that the influence of film tension and solar wind on the working shape of concentrator can be offset to a large extent by the introduction of the umbrella-shaped keel structure, which could eliminate wrinkles and enhance the deployability and stability of umbrella-shaped keel concentrator. The selected umbrella-shaped keel structure and Kevlar materials are proved to be appropriate.关键词
伞状龙骨/聚光器/太阳能热推进/静力学分析/聚光性能Key words
umbrella-shaped keel/concentrator/solar thermal propulsion/static analysis/concentration performance分类
航空航天引用本文复制引用
戴剑锋,付比,姚晓菊,戴怡乐,赵沛,何成旦..可折叠展开式伞状龙骨聚光器的聚光性能[J].强激光与粒子束,2012,24(1):46-50,5.基金项目
国家高技术发展计划项目 （）
甘肃省教育厅基金项目(0603-02) （0603-02）
