Patent ID: 8708657
Filing Date: 2014-04-29
Classification: F01D,F05D,Y10T

Abstract:
1. A rotor disc provided with blade receiving recesses at its outer periphery and opposing axially forward facing and axially rearward facing end faces, the blade receiving recesses extending entirely across an axial extent of a rim portion of the disc wherein the disc comprises two axially adjoining disc components, each disc component having respective cob portions relative to the other disc component, the inner peripheries of the respective cob portions having different diameters, the opposing axially forward facing and rearward facing end faces being joined together in axial face-to-face contact at the rim portion, and defining an internal cavity therebetween for conveying cooling air, each blade-receiving recess intersecting the cavity to provide communication between the cavity and the blade-receiving recesses.