Friction damper for gas turbine engine blades

Details Friction damper for gas turbine engine blades Friction damper for gas turbine engine blades

1994-05-13

1996-06-04

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

Axially extending shroud ring or casing

416191, 416500, F01D 526

Patent

active

055227058

ABSTRACT:
A friction damper (50) provides friction damping for gas turbine engine airfoils to reduce vibrations therein. The friction damper (50) includes a plate (52) underlying radially outer shrouds (30) of two adjacent airfoils (20). Friction generated between an outer surface (53) of the plate (52) and undersides (42) of the adjacent shrouds (30) reduces undesirable vibrations in the airfoils (20).

REFERENCES:
patent: 2610823 (1952-09-01), Knowlton, Jr.
patent: 3986792 (1976-10-01), Warner
patent: 4025232 (1977-05-01), Imai et al.
patent: 4028006 (1977-06-01), Kuroda et al.
patent: 4177011 (1979-12-01), Eskesen et al.
patent: 4721434 (1988-01-01), Marshall et al.
patent: 5156529 (1992-10-01), Ferleger et al.
patent: 5281097 (1994-01-01), Wilson et al.

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