NDLI: Superconducting bearings for application in cryogenic experiments in space

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Superconducting bearings for application in cryogenic experiments in space

Content Provider	NASA Technical Reports Server (NTRS)
Author	Everitt, C. W. F. Worden Jr., P. W.
Copyright Year	1980
Description	Linear superconducting magnetic bearings suitable for use in a proposed orbital equivalence principle experiment and for general application in space were developed and tested. Current flows in opposite directions in adjacent superconducting wires arranged parallel to the axis of a cylinder. This configuration provides maximum stiffness radially while allowing the test mass to move freely along the cylinder axis. In a space application, the wires are extended to cover the entire perimeter of the cylinder: for the earth-based tests it was desirable to use only the bottom half. Control of the axial position of the test mass is by small control coils which may be positioned inside or outside the main bearing. The design is suitable for application to other geometries where maximum stiffness is desired. A working model scaled to operate in a 1-g environment was perfected approximate solutions for the bearings were developed. A superconducting transformer method of charging the magnets for the bearing, and a position detector based on a SQUID magnetometer and associated superconducting circuit were also investigated.
File Size	4280005
Page Count	69
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19800020214
Archival Resource Key	ark:/13960/t21c6ss11
Language	English
Publisher Date	1980-06-01
Access Restriction	Open
Subject Keyword	Mechanical Engineering Accelerometers Magnetometers Bearings Superconductors Materials Spaceborne Experiments Cryogenics Superconducting Magnets Experiment Design Stiffness Squid Detectors Electric Current Magnetic Suspension Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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