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Proceedings Paper

Thermal performance prediction of the TMT telescope structure
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Paper Abstract

Thermal analysis for the Thirty Meter Telescope (TMT) structure was performed using finite element analysis in ANSYS and I-DEAS. In the thermal analysis, the telescope structural parts with simplified optical assembly systems were modeled for various thermal conditions including air convections, conductions, heat flux loadings, and radiations. Thermal responses of the TMT telescope structure were predicted and the temperature distributions of the optical assembly systems were calculated under sample thermal loading conditions. The thermo-elastic analysis was made to obtain the thermal deformation based on the resulting temperature distributions. The line of sight calculation was made using the thermally induced structural deformations. The goal of this thermal analysis is to establish thermal models by the FEA programs to simulate for an adequate thermal environment. These thermal models can be utilized for estimating the thermal responses of the TMT structure. Thermal performance prediction of the TMT structure will be able to guide us to control and maintain the system from the "seeing" effects.

Paper Details

Date Published: 1 October 2009
PDF: 15 pages
Proc. SPIE 7427, Optical Modeling and Performance Predictions IV, 74270E (1 October 2009); doi: 10.1117/12.828057
Show Author Affiliations
Myung Cho, National Optical Astronomy Observatory (United States)
Andrew Corredor, The Univ. of Arizona (United States)
Konstantinos Vogiatzis, Thirty Meter Telescope Project (United States)
George Angeli, Thirty Meter Telescope Project (United States)


Published in SPIE Proceedings Vol. 7427:
Optical Modeling and Performance Predictions IV
Mark A. Kahan, Editor(s)

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