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Concerning creation reflecting surfaces for radio telescopes of millimeter wavelength range

U. N Artemenko, S. M. Bondarenko , A. I. Borovkov, V. G. Gimmelman

Transactions of IAA RAS, issue 24, 115–121 (2012)

Keywords: reflecting surface, mirrors of radio telescope, 3-D coordinates, facets, robot system, thermal deformation

About the paper

Abstract

The technology of improving reflecting surfaces of main and secondary mirrors of the radio telescope RT-70 () for using it in the millimeter wavelength range is given. The work is carried out at the portal-type robot system in the following sequence: measuring surfaces in 3-D coordinates in real time mode with transmitting the data to acting mechanisms (blocs cold spraying and mechanical processing); monitoring the process of cold gas-dynamic spraying; processing of the surface with the accuracy better than 50 mkm (RMS). It is proposed to decrease heating/cooling of the reflecting surfaces of the system "main mirror-secondary mirror-horn", equalizing the temperature gradient by blowing in the automatic mode cold/warm air streams, manufacturing facets of materials based on ceramics with a low coefficient of linear thermal expansion. The surface elements should be analyzed by the of finite-element method and of new generation materials should be examined.

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U. N Artemenko, S. M. Bondarenko , A. I. Borovkov, V. G. Gimmelman. Concerning creation reflecting surfaces for radio telescopes of millimeter wavelength range // Transactions of IAA RAS. — 2012. — Issue 24. — P. 115–121.

@article{artemenko2012,
  abstract = {The technology of improving reflecting surfaces of main and secondary mirrors of the radio telescope RT-70 () for using it in the millimeter wavelength range is given. The work is carried out at the portal-type robot system in the following sequence: measuring surfaces in 3-D coordinates in real time mode with transmitting the data to acting mechanisms (blocs cold spraying and mechanical processing); monitoring the process of cold gas-dynamic spraying; processing of the surface with the accuracy better than 50 mkm (RMS). It is proposed to decrease heating/cooling of the reflecting surfaces of the system "main mirror-secondary mirror-horn", equalizing the temperature gradient by blowing in the automatic mode cold/warm air streams, manufacturing facets of materials based on ceramics with a low coefficient of linear thermal expansion. The surface elements should be analyzed by the of finite-element method and of new generation materials should be examined.},
  author = {U. NArtemenko and S.~M. Bondarenko and A.~I. Borovkov and V.~G. Gimmelman},
  issue = {24},
  journal = {Transactions of IAA RAS},
  keyword = {reflecting surface, mirrors of radio telescope, 3-D coordinates, facets, robot system, thermal deformation},
  pages = {115--121},
  title = {Concerning creation reflecting surfaces for radio telescopes of millimeter wavelength range},
  url = {http://iaaras.ru/en/library/paper/835/},
  year = {2012}
}

TY  - JOUR
TI  - Concerning creation reflecting surfaces for radio telescopes of millimeter wavelength range
AU  - NArtemenko, U.
AU  - Bondarenko, S. M.
AU  - Borovkov, A. I.
AU  - Gimmelman, V. G.
PY  - 2012
T2  - Transactions of IAA RAS
IS  - 24
SP  - 115
AB  - The technology of improving reflecting surfaces of main and secondary
mirrors of the radio telescope RT-70 () for using it in the
millimeter wavelength range is given. The work is carried out at the
portal-type robot system in the following sequence: measuring
surfaces in 3-D coordinates in real time mode with transmitting the
data to acting mechanisms (blocs cold spraying and mechanical
processing); monitoring the process of cold gas-dynamic spraying;
processing of the surface with the accuracy better than 50 mkm (RMS).
It is proposed to decrease heating/cooling of the reflecting surfaces
of the system "main mirror-secondary mirror-horn", equalizing the
temperature gradient by blowing in the automatic mode cold/warm air
streams, manufacturing facets of materials based on ceramics with a
low coefficient of linear thermal expansion. The surface elements
should be analyzed by the of finite-element method and of new
generation materials should be examined.
UR  - http://iaaras.ru/en/library/paper/835/
ER  -