System and method of controlling thrust forces on a thrust beari

Details System and method of controlling thrust forces on a thrust beari System and method of controlling thrust forces on a thrust beari

1996-12-31

1998-04-07

Verdier, Christoper

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

By shaft speed or torque responsive means

415104, 415105, 384448, 384517, 384624, F01D 304

Patent

active

057356661

ABSTRACT:
A system for controlling thrust forces on a thrust bearing in a rotating structure of a gas turbine engine at designated operating points including a device for providing thrust load compensation to the thrust bearing, a control for operating the thrust load compensation device, and a sensor for detecting rotational cage speed of the thrust bearing. The sensor provides a signal to the control when the rotational cage speed of the thrust bearing drops below a specified ratio of the rotational speed for the rotating structure, the signal being indicative of an incipient skid condition for the thrust bearing. The control then causes the thrust load compensation device to provide an additional predetermined load on the thrust bearing when it receives the signal from the sensor so that a resultant load thereon is within a specified load range which extends the life of the thrust bearing.

REFERENCES:
patent: 4578018 (1986-03-01), Pope
patent: 4907943 (1990-03-01), Kelch
patent: 5102295 (1992-04-01), Pope
patent: 5248239 (1993-09-01), Andrews

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