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S. W. K. Yuan1, A. R. Urbach2, S. M. Volz2, and J. H. Lee2
1 BEI Technologies, 13100 Telfair Avenue
Sylmar, CA 91342
Tel: (818) 364-7204, FAX: (818) 362-2487
2 Ball Aerospace & Technologies Corp.
Boulder, CO 80306
A theory is proposed which uses both the permeability and bubble point diameter of the porous plug to characterize the full range operation of the Vapor Liquid Phase Separation (VLPS) of liquid helium. A computer model has been written based on the theory presented in this paper, which gives good correlation with VLPS data in the literature. The predicted performance of the SIRTF flight plug is also presented.