Vibration damping of gas turbine engine buckets

Details Vibration damping of gas turbine engine buckets Vibration damping of gas turbine engine buckets

1991-04-19

1992-10-20

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416500, 416248, 416193A, B64C 1116

Patent

active

051565285

ABSTRACT:
A vibration damper is disposed between each adjacent pair of turbine buckets of a gas turbine engine to act in a V-shaped groove defined by bevelled platform surfaces of the adjacent buckets. The damper is wedge-shaped in cross section and is provided with a pad on one side and two pads on another side. When the damper is propelled into the groove by centrifugal force, it assumes a consistent equilibrium position with the raised surface of the one pad slidingly engaging one of the platform bevelled surfaces and the raised surfaces of the other two pads slidingly engaging the other bevelled platform surface to dissipate vibrational energy in the buckets.

REFERENCES:
patent: 1554614 (1925-09-01), Allen
patent: 2310412 (1943-02-01), Flanders
patent: 2356605 (1944-08-01), Meininghaus
patent: 3666376 (1972-05-01), Damlis
patent: 4101245 (1978-07-01), Hess et al.
patent: 4111603 (1978-09-01), Stahl
patent: 4182598 (1980-01-01), Nelson
patent: 4347040 (1982-08-01), Jones et al.
patent: 4872812 (1989-10-01), Hendley et al.
patent: 4917574 (1990-04-01), Dodd et al.

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