Performance Improvement of the CHeX Flight Cryostat

  • T. S. Luchik
  • U. E. Israelsson
  • D. Petrac
  • S. Elliott
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)

Abstract

The JPL flight cryostat last flew on the Space Shuttle in October, 1992 in support of the Lambda Point Experiment. A new experiment, the Confined Helium Experiment (CHeX), now in development will reuse this cryostat. An improvement to the cryostat performance was necessitated by the CHeX experiment having a longer mission requirement and stricter requirements imposed by NASA with respect to a launch-scrub turnaround scenario. The parasitic heat load reduction necessary to relieve both constraints was about 15% or 1 liter/day. The techniques implemented to achieve this goal, and subsequent results are presented along with a thermal model used during the analysis of the cryostat.

Keywords

Helium Epoxy Stratification Grease Manganin 

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References

  1. 1.
    D. Petrac, U.E. Israelsson, D. Otth, L.L. Simmons, J. Staats, and A. Thompson, “Technical Challenges Involved in Supporting the Lambda Point Experiment,” Cryogenics, 30, September supplement (1990).Google Scholar
  2. 2.
    D. Petrac, U.E. Israelsson, and T.S. Luchik, “The Lambda Point Experiment: Helium Cryostat, Cryo-Servicing, Functions and Performance,” Advances in Cryogenic Engineering, 38, (1993).Google Scholar

Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • T. S. Luchik
    • 1
  • U. E. Israelsson
    • 1
  • D. Petrac
    • 1
  • S. Elliott
    • 1
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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