Lifetime Enhancement of the CHeX Cryogenic System

  • T. S. Luchik
  • M. E. Larson
  • U. E. Israelsson
  • D. Pearson
  • D. Petrac
  • S. Elliott
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

The Confined Helium Experiment (CHeX) is manifested for flight on the Space Shuttle (STS-87) in November, 1997. The experiment was constrained to re-use a previously flown flight cryogenic system. However, the inherited system did not meet CHeX science requirements, nor current Shuttle launch requirements; enhancements of the system and procedures were required. We present model and data of the full flight system, before and after the enhancements were made. A discussion of procedural changes and their impact on the system are also presented. With the changes, all Shuttle servicing requirements were met. A net improvement in ground servicing of 30% and a net parasitic reduction of 15% were achieved. Predicted flight performance is also presented.

Keywords

Thermal Model Space Shuttle Helium Cryostat Cryogenic System Cryogenic Engineer 
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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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
  3. 3.
    T. Luchik, U.E. Israelsson, and D. Petrac and S. Elliott, “Performance enhancement of the CHeX flight cryostat,” Advances in Cryogenic Engineering, 39, (1995).Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

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

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