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Methods of Helium Injection and Removal for Heat Transfer AugmentationWhile augmentation of heat transfer from a test article by helium gas at low pressures is well known, the method is rarely employed during space simulation testing because the test objectives are to simulate an orbital thermal environment. Test objectives of cryogenic optical testing at Marshall Space Flight Center's X-ray Calibration Facility (XRCF) have typically not been constrained by orbital environment parameters. As a result, several methods of helium injection have been utilized at the XRCF since 1999 to decrease thermal transition times. A brief synopsis of these injection (and removal) methods including will be presented.
Document ID
20090015873
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Kegley, Jeffrey
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
September 22, 2008
Publication Information
Publication: 25th Space Simulation Conference. Environmental Testing: The Earth-Space Connection
Subject Category
Space Sciences (General)
Distribution Limits
Public
Copyright
Public Use Permitted.

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