Superconducting Meissner Effect Bearings for Cryogenic Turbomachines
Final rept. 1 Jan 91-30 Mar 93,
CREARE INC HANOVER NH
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This report describes the second year efforts to develop a Meissner bearing system for miniature cryogenic turboexpanders used in Brayton cycle cryocoolers. During this period, a permanent magnetMeissner effect bearing was tested, and a system was developed for measuring the stiffness and damping of superconductormagnet pairs at high frequencies and low amplitudes I kHz, 100 um. Preliminary measurements have shown the feasibility of Meissner effect bearingdamper systems for small turbomachines. A new configuration for the bearing system has been conceptualized, and a patent disclosure prepared. The system provides both accurate positioning of the shaft at room temperature and stable rotation at cryogenic temperatures.... Meissner effect bearings.
- Hydraulic and Pneumatic Equipment
- Machinery and Tools