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US 5,313,786 AGranted
Gas turbine blade damper
AssigneeUnited Technologies Corporation
InventorsWieslaw A. Chlus, Michael Gonsor, David P. Houston, Paul D. Kudra
Life of this patent
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Abstract
An integrated damper and windage cover 52 has a windage cover portion 56 cantilevered at the upstream end, free of contact with the blade platform 24, 32. The contact portion 54 is rigid and bears against the underside of the blade platform 24, spanning blade platform clearance 50.
Claims7
A gas turbine engine having an axis, an upstream direction, a downstream direction, a disk, and a plurality of blades;
- each blade having a airfoil, a blade platform, a neck a root, and each blade platform having an underside;
- the root of each blade secured in said disk;
- the neck of each blade having a cross-sectional area substantially a continuation in the shape of the airfoil;
- the platform of each blade having a cantilevered upstream portion with a radius underblade filet having a surface thereunder fairing into the neck, and having a concave blade side platform edge and a convex blade side platform edge parallel to each other;
- an integrated damper and windage cover comprising:
- an elongated damper having a contact portion and a windage cover portion having a surface;
- said contact portion contacting the underside of two adjacent blade platforms;
- said windage cover portion cantilevered from an upstream end of said contact portion, shaped with the same curvature as said underblade filet, located between adjacent blades with the windage cover portion surface in alignment with the surface of said underblade filet on adjacent blades, and with said windage cover portion free of contact with said platforms.
5 more elements
Dependencies are inferred from the claim text.