Turbine blade with trailing edge platform undercut

Details Turbine blade with trailing edge platform undercut Turbine blade with trailing edge platform undercut

2005-10-04

2005-10-04

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

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

Axially extending shroud ring or casing

Reexamination Certificate

active

06951447

ABSTRACT:
A turbine blade has an undercut beneath its platform at a trailing edge. The undercut has a complex shape to move thermal stress concentration away from the platform. A preferred undercut shape has a pair of curved fillets at upper and lower extents of the undercut with an intermediate straight section. The intermediate straight section is preferably parallel to a principle stress field of the platform.

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European Search Report, Mar. 10, 2005.

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