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Proceedings Paper

Development of active reflector of the 30-meter FAST model
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Paper Abstract

FAST is an Arecibo type large radio telescope with 500 meters aperture reflector, which is composed of about 4600 triangle panels. The panels and back structures are installed on the spring cable meshes. FAST adopts the active reflection structure to change the spherical difference, which will form a simultaneous parabola with aperture of 300 meters. To test the feasibility of this new type reflector structure, a FAST model of 30 meters aperture was constructed in 2005. In this paper, the structure of the model is introduced, which includes a circle supporting girder of 30 meters in diameter, 252 panel back structures, 472 main cables, and 145 sets of control cables, nodes, actuators and anchors. The structural design and analysis are processed for these compositions, and the test results of the model reflector are given. The work of the paper will provide a significant reference for the primary design of FAST reflector.

Paper Details

Date Published: 23 July 2008
PDF: 8 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70184A (23 July 2008); doi: 10.1117/12.790625
Show Author Affiliations
Qi-ming Wang, National Astronomical Observatories (China)
Lichun Zhu, National Astronomical Observatories (China)
Rendong Nan, National Astronomical Observatories (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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