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Proceedings Paper

CRYSTAL camera: an infrared prototype instrument for flow visualization between 90 and 313 K has been installed in a cryogenic wind tunnel
Author(s): Jean-Francois Goussu; Philippe Deliot
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Paper Abstract

ONERA has developed an IR camera prototype named CRYSTAL to perform surface flow visualization at cryogenic temperatures in the severe environment of ETW GmbH. The camera, which has been operating since 1998, is based on a 128 X 192 Si:Ga focal plane array and is, to our knowledge, the first world- wide IR camera to work in a cryogenic wind tunnel and at such temperatures. Indeed, the working temperature of the tunnel varies between 313 K and 90K. The qualitative thermometry of CRYSTAL from the ambient reaches down to 120 K. The aerodynamic effects to observe need a level of resolution inferior to 1 K. This paper addresses the mechanical aspects of the instrument.

Paper Details

Date Published: 5 November 2001
PDF: 8 pages
Proc. SPIE 4444, Optomechanical Design and Engineering 2001, (5 November 2001); doi: 10.1117/12.447309
Show Author Affiliations
Jean-Francois Goussu, ONERA (France)
Philippe Deliot, ONERA (France)

Published in SPIE Proceedings Vol. 4444:
Optomechanical Design and Engineering 2001
Alson E. Hatheway, Editor(s)

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