A Small Long-Life Dewar for Explorer-Type Space Experiments

  • A. R. Urbach
  • K. A. Gause
  • S. J. Nieczkoski
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

Present and future space experiments are being designed to be small, lightweight, low cost, and if superfluid helium (SfHe) cooled, often will fly in a solar orbit. This paper presents the design of a 90-liter SfHe dewar that fulfills these requirements. The dewar is constructed from aluminum with stainless steel plumbing, has thermally efficient gamma alumina supports, multilayer insulation, and low thermal conductance electrical ribbon cables. With a vacuum shell radiantly cooled to < 60 K , the anticipated lifetime is 2 years. The dewar is fully instrumented with mass quantity gages, and temperature and pressure sensors. It also has strain and accelerometer gages to permit detailed performance measurement which will be used to identify future design improvements. An instrument cavity is provided for housing instruments at < 1.4 K.

Keywords

Gamma Alumina Insulation System Superfluid Helium Instrument Cavity Porous Plug 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • A. R. Urbach
    • 1
  • K. A. Gause
    • 1
  • S. J. Nieczkoski
    • 1
  1. 1.Ball Aerospace Systems DivisionBoulderUSA

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