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Thermal performance evaluation of the infrared telescope dewar subsystemThermal performance evaluations (TPE) were conducted with the superfluid helium dewar of the Infrared Telescope (IRT) experiment from November 1981 to August 1982. Test included measuring key operating parameters, simulating operations with an attached instrument cryostat and validating servicing, operating and safety procedures. Test activities and results are summarized. All objectives are satisfied except for those involving transfer of low pressure liquid helium (LHe) from a supply dewar into the dewar subsystem.
Document ID
19860015834
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Urban, E. W. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1986
Subject Category
Astronomy
Report/Patent Number
NASA-TM-86543
NAS 1.15:86543
Accession Number
86N25305
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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