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Development of small Vuilleumier cooler for space use. Test results of long-term operation.

[In Japanese. / En japonais.]

Author(s) : KAWADA M., HOSOKAWA S., KUDO I., YOSHIMURA H.

Type of article: Article

Summary

A Vuilleumier cooler has the potential advantages of long-life operation with low mechanical vibration, and hence, it is expected for cooling spaceborne infrared sensors. The paper describes the results from an endurance test in an atmospheric environment for over 13,000 hours as well as causes of the cooler performance degradation. Cooling capacity was 1.6 watt at 80 K at the beginning of life and it decreased to 0.8 watt at the end of life. The authors found that both crankpin bearing of a cold displacer and crosshead pin bearing of a hot displacer were broken. It is believed that cold head volume was reduced by former bearing breakdown and indicated work was reduced by later bearing breakdown. Both bearing failures brought cooler performance degradation.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1993-2470
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 27 - n. 7
  • Publication date: 1992
  • Document available for consultation in the library of the IIR headquarters only.

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