Finite-element modeling and thermal analysis of the RT-70 radio telescope main reflector

Author

Borovkov, A.I. ; Shevchenko, D.V. ; Gimmelman, V.G. ; Machuev, Yu.I. ; Gaev, A.V.

Author_Institution

St. Petersburg State Polytech. Univ., Russia

Volume

2

fYear

2003

fDate

9-12 Sept. 2003

Firstpage

651

Abstract

The paper presents results of finite-element modeling and the analysis of temperature fields on the RT-70 radio telescope main reflector arising from the influence of solar heat. The worldwide experience of the design and creation of unique constructions is analyzed and the mechanical problems of the full-circle radio telescope RT-70 are classified. The finite-element thermal analysis of the RT-70 is chosen as the primary problem to solve. Mathematical and 3D finite-element models are developed to analyze the temperature fields in the RT-70 main reflector. These models allow estimating, with high validity, temperature values in various points of the main reflector in different climate conditions and different times of day.

Keywords

finite element analysis; parameter estimation; radiotelescopes; reflector antennas; temperature; thermal analysis; RT-70; RT-70 radio telescope main reflector; climate conditions; finite-element modeling; full-circle radio telescope; mechanical problems; solar heat; temperature fields; thermal analysis; time-of-day; Differential equations; Finite element methods; Frequency estimation; Heat transfer; Mathematical model; Optical design; Radio astronomy; Strain measurement; Telescopes; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Theory and Techniques, 2003. 4th International Conference on

Print_ISBN

0-7803-7881-4

Type

conf

DOI

10.1109/ICATT.2003.1238827

Filename

1238827