Thermal Design and Test of IRTS Cryostat

  • M. Murakami
  • G. Fujii
  • T. Hasui
  • K. Hama
  • T. Machida
  • M. Kyoya
  • M. Hirabayashi
  • H. Okuda
  • T. Matsumoto
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 35)

Abstract

Design study of a small, cooled infrared telescope (IRTS) has been made, which will be launched in 1994 as a payload of the Space Flyer Unit (SFU). It is cooled down to 1.8 K by stored superfluid helium of 100 dm3 for about one month, being capable of IR astrophysical observation even in far infrared region. Minimization of heat leak to the lowest temperature level is one of the primary design goal under various constraints. The application of the reflecting, Winston cone type, forebarrel and the black baffle system composed of the mirrors and the aftbarrel is considered for this purpose as well as for extremely low background. A BBM has been manufactured on the basis of the design study, which is primarily dedicated to a thermal test. The test is under way to obtain the design data for the PFM.

Keywords

Furnace Helium GFRP Manganin 

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References

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    A. R. Urbach, R.A. Hopking and P.V. Mason, One year of start, provided by the IRAS cryogenic system, in: “Proc. Inter. Symp. on Environmental and Thermal Systems for Space Vehicles”, ESA SP-200 (1983) p. 171. Google Scholar
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    W.F. Brroks et al, Space infrared telescope facility (SIRTF) observatory design, in: “Proc. Of Int. Society dor Optical Eng.”, Vol 619, (1986) p. 2.Google Scholar
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    J. Youdale and F. Villefranche, A Single cryogen system for the ISO satellite, in: “Proc. Of 11th Intl. Cryo. Engr. Conf.”, (1986) P. 362.Google Scholar
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • M. Murakami
    • 1
  • G. Fujii
    • 2
  • T. Hasui
    • 2
  • K. Hama
    • 2
  • T. Machida
    • 2
  • M. Kyoya
    • 3
  • M. Hirabayashi
    • 3
  • H. Okuda
    • 4
  • T. Matsumoto
    • 5
  1. 1.Institute of Engineering MechanicsUniversity of TsukubaIbarakiJapan
  2. 2.Space Development DivisionNEC Corp.YokohamaJapan
  3. 3.Sumitomo Heavy Industries Ltd.Toyo, EhimeJapan
  4. 4.Institute of Space and Astronautical ScienceSagamiharaJapan
  5. 5.Department of PhysicsNagoya UniversityNagoyaJapan

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