Desireddy, Vijesh R. (2008-12). Test-Theory Correlation Study for an Ultra High Temperature Thrust Magnetic Bearing. Master's Thesis.
Magnetic bearings have been researched by the National Aeronautics and Space
Administration (NASA) for a very long time to be used in wide applications. This
research was to assemble and test an axial thrust electromagnetic bearing, which can
handle 1000 lb-f of axial thrust load, when rotating at high speed, in a high temperature
environment of 1000 0F. This high temperature magnetic bearing system would be used
in high performance, high speed and high temperature applications like space vehicles,
jet engines and deep sea equipment.
An experimental procedure was developed to measure actual load capacity of the
designed bearing in the test rig. All the results obtained from the experiment were
compiled and analyzed to determine the relation between bearing force, applied current
The thesis incorporates the assembly, testing of the electromagnetic bearing at
various speeds and temperatures and compare predicted to measured force vs. speed,
current, gap and temperature. The results showed that the high temperature thrust
magnetic bearing is capable of handling 1000 lb-f at 10000F and 5500 rpm.