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Feasibility demonstration of a thermal switch for dual temperature IR focal plane cooling.

Author(s) : JOHNSON D. L., WU J. J.

Summary

A feasibility demonstration was performed examining the potential of a thermal switch to provide thermal isolation between two independent cooling systems providing different cooling temperatures to an infrared sensor focal plane assembly. A conical gas-gap thermal switch using a metal hydride sorption bed to control the hydrogen gas supply was designed to provide the thermal isolation link between the cryocooler and the passive cryoradiator cooling system. The thermal switch was integrated with a Matra Marconi Space Systems 80 K cooler, a Gifford-McMahon cooler simulating the cryoradiator, and a simulated focal plane heat source for the feasibility demonstration.

Details

  • Original title: Feasibility demonstration of a thermal switch for dual temperature IR focal plane cooling.
  • Record ID : 1998-1490
  • Languages: English
  • Source: Cryocoolers 9. Proceedings of the International Cryocooler Conference.
  • Publication date: 1996/06/25
  • Document available for consultation in the library of the IIR headquarters only.

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