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Refroidisseurs à tube à pulsation pour l'imagerie hyperspectrale en vol.

Pulse tube cooler for flight hyperspectral imaging.

Auteurs : CHAN C. K., CLANCY P., GODDEN J.

Type d'article : Article

Résumé

A new version of TRW's miniature pulse tube cooler system maintains the short wave infrared-focal plane array (SWIR-FPA) interface at a temperature of 110 K. The cooler provides the nominally required cooling load of 0.84 W to the FPA via a cold thermal strap, at 72% stroke consuming 14.7 W of electrical power, when the heat reject temperature is at 300 K. This cooler can operate up to 90% stroke, having 1.5 W cooling load, thus having 79% performance margin for the Hyperion mission. Before the installation and operation of the cooler onto the instrument, both the mechanical and the electronics assemblies underwent the environmental tests of launch vibration, thermal vacuum cycling, and burn-in. The cooler performance in terms of mechanical efficiency, electronics efficiency, load lines, temperature stability, self-induced vibrational force reduction, ripple current reduction, and magnetic radiated emission was measured and are reported in the article.

Détails

  • Titre original : Pulse tube cooler for flight hyperspectral imaging.
  • Identifiant de la fiche : 2001-2640
  • Langues : Anglais
  • Source : Cryogenics - vol. 39 - n. 12
  • Date d'édition : 1999

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