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Prediction of thermal acoustic oscillations (TAOs) in the CLAES solid CO2/neon systemResults are presented of a study initiated to investigate the possibility that the existence of thermal acoustic oscillations (TAOs) in the Cryogenic Limb Atmospheric Etalon Spectrometer (CLAES) neon plumbing system ground configuration could be the cause of higher-than-predicted heat rates measured during thermal ground testing. Tests were conducted between warm boundary temperatures ranging from 40 to 100 K, which simulated the actual test conditions of the CLAES CO2/neon system. TAOs were observed between 6 and 106 Torr, which agreed with the analytical predictions, and verified the possible existence of TAOs in the CLAES system during ground testing. The presence of TAOs was eventually confirmed in the CLAES system during a subsequent thermal test and were determined to have caused the higher heat rates measured during the prior thermal test.
Document ID
19930064591
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Spradley, I. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Yuan, S. W. K.
(Lockheed Missiles & Space Co., Inc. Research and Development Div., Palo Alto, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Advances in cryogenic engineering. Vol. 37A - Proceedings of the 1991 Cryogenic Engineering Conference, Univ. of Alabama, Huntsville, June 11-14, 1991 (A93-48578 20-37)
Publisher: Plenum Press
Subject Category
Engineering (General)
Accession Number
93A48588
Funding Number(s)
CONTRACT_GRANT: NAS5-27752
Distribution Limits
Public
Copyright
Other

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