Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Patent
1996-10-11
1998-05-05
Verdier, Christopher
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
416193A, 416248, 416500, F01D 510
Patent
active
057465789
ABSTRACT:
A rotor blade for a rotor of a gas turbine engine having an axis of rotation including a root portion, a platform portion connected to the root portion and having a damper pocket formed therein, an airfoil portion connected to the platform portion, a generally bar-shaped damping member loosely arranged in the damper pocket having at least one scrubbing surface, and at least one leg extending from the bar-shaped damping member for retaining the bar-shaped damping member in the damper pocket. The bar-shaped damping member is slidably displaceable and rotatable within the damper pocket during rotation of the rotor. The damper pocket in the platform portion has a rear surface with an upper portion and a lower portion at an angle to the upper portion, a pair of spaced side surfaces, and a pair of spaced lower surfaces extending from the rear surface lower portion which are substantially coplanar. The damper pocket lower surfaces are provided by a first blade tab extending laterally inward from one of the side surfaces and a second blade tab extending laterally inward from the other side surface, where a leg connected to the bar-shaped damping member extends through a slot in at least one of the first and second blade tabs so as to retain the bar-shaped damping member within the damper pocket.
REFERENCES:
patent: 3266770 (1966-08-01), Harlow
patent: 4516910 (1985-05-01), Bouiller et al.
patent: 5215442 (1993-06-01), Steckle et al.
patent: 5226784 (1993-07-01), Mueller et al.
patent: 5261790 (1993-11-01), Dietz et al.
patent: 5302085 (1994-04-01), Dietz et al.
patent: 5369882 (1994-12-01), Dietz et al.
Brassfield Steven R.
Webb Alan L.
General Electric Company
Hess Andrew C.
Scanlon Patrick R.
Verdier Christopher
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