Rotational dynamics of passive high T c superconducting bearings
- 1 August 1991
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 70 (3) , 1820-1825
- https://doi.org/10.1063/1.349498
Abstract
The rotational dynamics of passive high T c superconducting bearings are discussed. Rotor deceleration as a function of time is measured using a bare rotor, a rotor with paddles, and a rotor with a small magnetic chip used to induce magnetic asymmetry. All three cases are fit to within experimental error using solutions to a first order differential equation where the decelerating torque is given by a constant term described by the critical‐state Bean model, plus a term linear in the rotational frequency described by the Stokes ‘‘slow flow’’ approximation to the Navier–Stokes equations in the limit of small Reynolds number.This publication has 17 references indexed in Scilit:
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