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The use of infrared absorption to determine density of liquid hydrogen.Experimental evaluation of the use of infrared absorption for determining the density of liquid hydrogen, and discussion of the feasibility of an airborne densitometer based on this concept. The results indicate that infrared absorption of liquid hydrogen is highly sensitive to the density of hydrogen, and, under the operating limitations of the equipment and experimental techniques used, the determined values proved to be repeatable to an accuracy of 2.7%. The desiderata and limitations of an in-flight density-determining device are outlined, and some of the feasibility problems are defined.
Document ID
19720055170
Document Type
Other - Collected Works
Authors
Unland, H. D.
Timmerhaus, K. D.
Kropschot, R. H. (Colorado, University Boulder, Colo., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Funding Number(s)
PROJECT: NBS PROJECT 31506-12-3150464
Distribution Limits
Public
Copyright
Other