Turbopump with actine suspension for a propulsion system

Details Turbopump with actine suspension for a propulsion system Turbopump with actine suspension for a propulsion system

1988-03-30

1990-05-29

Casaregola, Louis J.

Pumps

Motor driven

Fluid motor

F04B 1700

Patent

active

049291580

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.

REFERENCES:
patent: 3947153 (1976-03-01), Matthias
patent: 3955426 (1976-05-01), Klinchuch
patent: 4180946 (1980-01-01), Heijkenskjold et al.
patent: 4295803 (1981-10-01), Barthelmess
patent: 4392693 (1983-07-01), Habermann et al.
patent: 4500142 (1985-02-01), Brunet
patent: 4504098 (1985-03-01), Battarel et al.
patent: 4609332 (1986-09-01), Miki et al.
patent: 4641978 (1987-02-01), Kapich
patent: 4650132 (1987-03-01), Graf et al.
"Compressed Air Magazine", Apr. 1985, --Suspending Rotating Shafts in Midair--pp. 30-33.

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