Flight Results from the Cryogenic Capillary Pumped Loop (CCPL) Flight Experiment on STS-95

Paper #:
  • 1999-01-1978

Published:
  • 1999-07-12
Citation:
Bugby, D. and Marland, B., "Flight Results from the Cryogenic Capillary Pumped Loop (CCPL) Flight Experiment on STS-95," SAE Technical Paper 1999-01-1978, 1999, https://doi.org/10.4271/1999-01-1978.
Pages:
11
Abstract:
This paper describes the Cryogenic Capillary Pumped Loop (CCPL) flight experiment, which flew as part of the CRYOTSU payload on STS-95 in late 1998. The CCPL flight unit is a miniaturized two-phase fluid circulator for transporting cooling power from cryogenic cooling sources (cryocoolers) to remote cryogenic components. During the 9-day flight, the N2-charged CCPL operated successfully over six test cycles (~70 hours). Heat loads were varied from 0-3 W and tests included several startups, power cycles, cold reservoir set-point tests, and condenser sink temperature tests. Ground and flight test data is included herein. The zero-g environment had no discernible impact on CCPL operation.
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