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Proceedings Paper • Open Access

Simulation of reflecting surface deviations of centimeter-band parabolic space radiotelescope (SRT) with the large-size mirror
Author(s): A. Kotik; V. Usyukin; I. Vinogradov; M. Arkhipov

Paper Abstract

he realization of astrophysical researches requires the development of high-sensitive centimeterband parabolic space radiotelescopes (SRT) with the large-size mirrors.

Constructively such SRT with the mirror size more than 10 m can be realized as deployable rigid structures.

Mesh-structures of such size do not provide the reflector reflecting surface accuracy which is necessary for the centimeter band observations.

Now such telescope with the 10 m diameter mirror is developed in Russia in the frame of "SPECTR - R" program.

External dimensions of the telescope is more than the size of existing thermo-vacuum chambers used to prove SRT reflecting surface accuracy parameters under the action of space environment factors. That’s why the numerical simulation turns out to be the basis required to accept the taken designs.

Such modeling should be based on experimental working of the basic constructive materials and elements of the future reflector.

In the article computational modeling of reflecting surface deviations of a centimeter-band of a large-sized deployable space reflector at a stage of his orbital functioning is considered.

The analysis of the factors that determines the deviations - both determined (temperatures fields) and not-determined (telescope manufacturing and installation faults; the deformations caused by features of composite materials behavior in space) is carried out.

The finite-element model and complex of methods are developed.

They allow to carry out computational modeling of reflecting surface deviations caused by influence of all factors and to take into account the deviations correction by space vehicle orientation system.

The results of modeling for two modes of functioning (orientation at the Sun) SRT are presented.

Paper Details

Date Published: 21 November 2017
PDF: 6 pages
Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105671A (21 November 2017); doi: 10.1117/12.2308118
Show Author Affiliations
A. Kotik, Astro Space Ctr. (Russian Federation)
V. Usyukin, Bauman Moscow State Technical Univ. (Russian Federation)
I. Vinogradov, Astro Space Ctr. (Russian Federation)
M. Arkhipov, Astro Space Ctr. (Russian Federation)
Bauman Moscow State Technical Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 10567:
International Conference on Space Optics — ICSO 2006
Errico Armandillo; Josiane Costeraste; Nikos Karafolas, Editor(s)

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