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Proceedings Paper

Analysis, optimization, and modification the back-structure of FAST
Author(s): Qing Zhao; Qi-ming Wang; Shuang Niu; Hong-liang Qian
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Paper Abstract

FAST, five-hundred-meter aperture spherical radio telescope will be the largest radio telescope in the world which has been established science and research items recently. One of the innovative engineering concepts is the active main reflector which corrects spherical aberration on the ground to achieve full polarization and a wide band without involving a complex feed system. Besides the reflector simulation, it is very important to study the supporting structure for the reflecting surface. As the cable-net structure has been adopted, the in-depth study of back-structure is very important which is connected between cable-net and panel. In this paper, structure forms and parameters are studied in detail due to catch the costs and technical requirements. Throughout analysis, parameters are compared and modified. Meanwhile, Comparing experiments has carried out on some sample frames. The stiffness experiments with different load situations are going to confirm the feasibility of certain back-structure. Some conclusions is obtained, which can avail in further study.

Paper Details

Date Published: 23 July 2008
PDF: 11 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70181I (23 July 2008); doi: 10.1117/12.790613
Show Author Affiliations
Qing Zhao, National Astronomical Observatories (China)
Qi-ming Wang, National Astronomical Observatories (China)
Shuang Niu, Harbin Institute of Technology (China)
Hong-liang Qian, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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