Turbopump with actine suspension for a propulsion system
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United States of America Patent
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May 29, 1990
Grant Date -
N/A
app pub date -
Mar 30, 1988
filing date -
Apr 9, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A turbopump with active magnetic suspension comprises at least two back-up bearings, each constituted by a first ring fast with a rotary shaft and a second ring fast with a casing, the rings being concentric and defining a free space whose length in the radial direction is about half the length of the means air gap of the radial magnetic bearings. The first and second rings are preferably anchored, respectively, in the rotor laminated ferromagnetic armature and in the stator laminated ferromagnetic core of a radial active magnetic bearing which may also provide hydrodynamic effects by pumping fluid into the air gap of the bearing.
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