Advertisement

Cryocoolers 11 pp 169-174 | Cite as

High Performance Flight Cryocooler Compressor

  • P. B. Bailey
  • M. W. Dadd
  • N. Hill
  • C. F. Cheuk
  • J. Raab
  • E. Tward
Chapter

Abstract

In this paper we report on the development of a next generation flexure bearing compressor which features high efficiency, high capacity per unit mass, enhanced producibility and ease of integration into payloads. The compressor was developed for the 95K High Efficiency Cryocooler programme.

The compressor achieves low mass by using small diameter flexure springs and having a new compact design of magnetic circuit which also has the advantage of being self shielding, thus reducing the radiated magnetic field.

A pair of compressors mounted back to back and driven in anti-phase provides low levels of self-induced vibration, which is further improved by the rigidity of the motor and the characteristics of the new motor and spring designs.

Its ease of integration results from its compact size and the incorporation of a single thermal and mechanical mounting interface in its centreplate. The centreplate incorporates heat spreading both internally for removing compressor heat as well as for spreading the heat to the radiator to which it can be attached.

Producibility has been achieved by transferring the processes developed for manufacturing a similar Oxford designed long life tactical cryocooler.

The compressors are being manufactured by Hymatic to a design which has evolved from earlier machines made by Oxford University. TRW will integrate the compressors into the flight qualified 95K High Efficiency Cryocooler which will be delivered to AFRL in October 2000.

Keywords

Alignment Error Pulse Tube Geometric Tolerance Spring Design Compressor Design 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Chan, C.K., Nguyen, T., Colbert, R., Raab, J., Ross, R.G. Jr., Johnson, D.L., “IMAS Pulse Tube Cooler Development and Testing”, Cryocoolers 10, Plenum Press, New York (1999), pp 139–147.Google Scholar
  2. 2.
    Aubon, C.R., Peters, N. R., “Miniature Long Life Tactical Stirling Cryocoolers”, Cryocoolers 9, Plenum Press, New York (1997), pp 109–118.Google Scholar
  3. 3.
    Tward, E., Davis, T., “High Efficiency Cryocooler”, Proc. AIAA Paper No. 99–4564, 1999.Google Scholar

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • P. B. Bailey
    • 1
  • M. W. Dadd
    • 1
  • N. Hill
    • 2
  • C. F. Cheuk
    • 2
  • J. Raab
    • 3
  • E. Tward
    • 3
  1. 1.Oxford UniversityOxfordUK
  2. 2.The Hymatic Engineering Company, Ltd.RedditchUK
  3. 3.TRWRedondo BeachUSA

Personalised recommendations