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Proceedings Paper

Analysis Of Dewar And Transfer Line Cooldown In Superfluid Helium On-Orbit Transfer Flight Experiment (SHOOT)
Author(s): Y. S. Ng; J. H. Lee
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Paper Abstract

The Superfluid Helium On-Orbit Transfer Flight Experiment (SHOOT) is designed to demonstrate the techniques and components required for orbital superfluid (He II) replenishment of observatories and satellites. One of the tasks planned in the experiment is to cool a warm cryogen tank and a warm transfer line to liquid helium temperature. A math model, based on single-phase vapor flow heat transfer, has been developed to predict the cooldown time, component temperature histories, and helium consumption rate, for various initial conditions of the components and for thermomechanical pump heater powers of 2 W and 0.5 W. This paper discusses the model and the analytical results, which can be used for planning the experiment operations and determining the pump heater power required for the cooldown operation.

Paper Details

Date Published: 27 April 1988
PDF: 10 pages
Proc. SPIE 0973, Cryogenic Optical Systems and Instruments III, (27 April 1988); doi: 10.1117/12.948335
Show Author Affiliations
Y. S. Ng, Sterling Federal Systems, Inc (United States)
J. H. Lee, NASA Ames Research Center (United States)

Published in SPIE Proceedings Vol. 0973:
Cryogenic Optical Systems and Instruments III
Ramsey K. Melugin; Warren G. Pierce, Editor(s)

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