NASA NTRS · 19910000065
Meissner-Effect Stepping Motor
Abstract
Proposed stepping motor derives torque from diamagnetic repulsion produced by Meissner effect - exclusion of magnetic field from interior of superconductor. Design of motor takes advantage of silver-doped YB2Cu3O and other compounds superconductive at temperatures as high as that of liquid nitrogen. Skin of rotor cooled below its superconducting-transition temperature by liquid nitrogen. O-rings prevent leaks of liquid nitrogen from rotor. Weight, cost, and maintenance reduced.
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Robertson, Glen A.. 1991-02-01. Meissner-Effect Stepping Motor. https://ntrs.nasa.gov/citations/19910000065
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