Active rotor stage vibration control

Details Active rotor stage vibration control Active rotor stage vibration control

1997-08-29

2000-05-02

Casaregola, Louis J.

Power plants

Reaction motor

Interrelated reaction motors

60262, 415117, 415119, F02C 700

Patent

active

060558059

ABSTRACT:
An apparatus for controlling vibrations in a rotor stage rotating through core gas flow is provided. The apparatus includes a source of high-pressure gas and a plurality of ports for dispensing high-pressure gas. The rotor stage rotates through core gas flow having a plurality of circumferentially distributed first and second regions. Core gas flow within each first and second region travels at a first and a second velocity, respectively. The first velocity is substantially higher than the second velocity. The ports dispensing the high-pressure gas are selectively positioned upstream of the rotor blades, and aligned with the second regions such that high-pressure gas exiting the ports enters the second regions. The velocity of core gas flow in the second regions consequently increases, and substantially decreases the difference in core gas flow velocity between the first and second regions.

REFERENCES:
patent: 3628880 (1971-12-01), Smuland et al.
patent: 4255083 (1981-03-01), Andre et al.
patent: 4497610 (1985-02-01), Richardson et al.
patent: 5584651 (1996-12-01), Pietraszkiewicz et al.

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