Damper configured turbine blade

Details Damper configured turbine blade Damper configured turbine blade

2007-04-10

2010-06-15

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

C416S500000

Reexamination Certificate

active

07736124

ABSTRACT:
A turbine rotor blade includes a hollow airfoil joined to a platform and dovetail. A main flow channel extends longitudinally in span through the blade and is bound chordally by opposite partitions transversely bridging opposite sidewalls of the airfoil. A damper rib and transversely opposite damper pad are arranged together in a plurality of pairs spaced longitudinally apart in the airfoil and chordally positioned intermediate to the partitions to provide unobstructed forward and aft portions of the flow channel for channeling a coolant therethrough. The damper ribs and pads are configured to receive a wire damper through the channel to locally dampen vibration while minimizing obstruction of the coolant flow therethrough.

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Garay, G., “Design, Analysis, and Testing of an Internal Damper for Turbine Airfoils,” 10th National Turbine HCF Conference, USA, Mar. 8, 2005, pp. 1-23.

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