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Title: Velocity damper for electromagnetically levitated materials

A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation.
Inventors:
 [1]
  1. (Oak Ridge, TN)
Issue Date:
OSTI Identifier:
869346
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Patent Number(s):
US 5319670
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
velocity; damper; electromagnetically; levitated; materials; damping; oscillatory; spinning; motions; induced; material; opposed; field; magnets; located; orthogonally; existing; levitation; coils; providing; dc; quadrupole; cusp; generating; nonconducting; avoid; eddy-current; heating; magnetic; permeability; distorting; induction; fields; levitation coil; magnetic permeability; magnetically levitated; quadrupole field; motions induced; electromagnetically levitated; /373/219/