Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Coating – specific composition or characteristic
Patent
1999-04-06
2000-12-05
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Coating, specific composition or characteristic
416500, 416230, 416229A, 416236R, 415119, 298897, 298891, B63H 126
Patent
active
061557897
ABSTRACT:
A gas turbine engine airfoil assembly for damping airfoil vibrations includes a metallic airfoil having an outer surface and a chordwise extending cavity beneath the outer surface of the airfoil. A damper is trapped within the cavity and a region in the airfoil surrounding the cavity has compressive residual stresses imparted by laser shock peening. The damper is preferably a chordwise extending linear wire having a distal end tacked down within the cavity. The invention includes a method for constructing the assembly for damping airfoil vibrations.
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Cowie William D.
Mannava Seetharamaiah
Yeaton Robert L.
General Electric Company
Gressel Gerry S.
Hess Andrew C.
Look Edward K.
Rodriguez Hermes
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