NASA NTRS · 19850000116
Long-Life Cryogenic Cooler
Abstract
Magnetic bearings and noncontacting seals let cooler operate unattended at 65 K for more than 3 years. New cooler uses magnetic bearings, small piston/cylinder clearance seals, and linear motors. Cooler consists of compression and expansion sections connected end-to-end. Compression section houses reciprocating hollow piston driven by linear motor.
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Sherman, A., Gasser, M. G., Studer, P., Daniels, A., Goldowsky, M.. 1985-06-01. Long-Life Cryogenic Cooler. https://ntrs.nasa.gov/citations/19850000116
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