Stress-relieved rotor blade attachment slot

Details Stress-relieved rotor blade attachment slot Stress-relieved rotor blade attachment slot

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/30 (2006.01)

Patent

CA 2048757

Dkt. No. 13-DV-10026 ABSTRACT OF THE DISCLOSURE To eliminate stress peaking at the bearing surface interface of the blade and disk slot dovetails in a gas turbine engine, the slot dovetail is undercut to remove disk material from contact with the blade dovetail radially inner edges where surface stress peaking would otherwise occur. The undercut contour radially inward of the blade dovetail is determined by analysis based on each engine design such as to achieve a substantially uniform distribution of surfaces stress along the dovetail slot fillet radius.

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