Active hydraulic rotor damping

Details Active hydraulic rotor damping Active hydraulic rotor damping

1995-05-04

1998-11-24

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3924, 384 99, 415119, F02C 700

Patent

active

058392688

ABSTRACT:
The compressor shaft in a gas turbine engine is supported on a bearing having four independently hydraulically pressurized cells. The pressure in the cells is controlled by a signal processor based on engine operating parameters, including stall margin and blade tip to compressor case clearance.

REFERENCES:
patent: 3442560 (1969-05-01), DeGast
patent: 4213661 (1980-07-01), Marmol
patent: 4952076 (1990-08-01), Wiley et al.
patent: 4971457 (1990-11-01), Carlson
patent: 4971458 (1990-11-01), Carlson
patent: 4981415 (1991-01-01), Marmol et al.
patent: 5584463 (1996-12-01), Swann et al.

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