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Flight data analysis and further development of variable-conductance heat pipesContinuing efforts in large gains in heat-pipe performance are reported. It was found that gas-controlled variable-conductance heat pipes can perform reliably for long periods in space and effectively provide temperature stabilization for spacecraft electronics. A solution was formulated that allows the control gas to vent through arterial heat-pipe walls, thus eliminating the problem of arterial failure under load, due to trace impurities of noncondensable gas trapped in an arterial bubble during priming. This solution functions well in zero gravity. Another solution was found that allows priming at a much lower fluid charge. A heat pipe with high capacity, with close temperature control of the heat source and independent of large variations in sink temperature was fabricated.
Document ID
19760012289
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Enginer, J. E. (TRW Systems Group Redondo Beach, CA, United States)
Luedke, E. E. (TRW Systems Group Redondo Beach, CA, United States)
Wanous, D. J. (TRW Systems Group Redondo Beach, CA, United States)
Date Acquired
September 3, 2013
Publication Date
February 1, 1976
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
TRW-26263-6021-RU-00
RR-1
NASA-CR-137782
Accession Number
76N19377
Funding Number(s)
CONTRACT_GRANT: NAS2-8310
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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