Contoured disk bore
A turbine disk comprising a disk bore disposed about a centerline, the disk bore comprising a bore width, and a web extending radially away from the disk bore wherein the disk bore comprises in cross-section a contoured shape comprising a contour depth.
1. A disk, comprising:
a disk bore disposed about a centerline, said disk bore having a bore width; and
said disk bore comprising a contoured shape having a contour depth, wherein said disk bore further comprises a ratio of said contour depth divided by said bore width of between 0.4 and 0.12.
2. The disk of claim 1 , wherein said contoured shape is a smooth curve.
3. The disk of claim 2 , wherein said smooth curve is a conic section.
4. The disk of claim 3 , wherein said smooth curve is semi circular.
5. The disk of claim 1 , wherein said contoured shape comprises a blend radius.
6. The disk of claim 1 , wherein said ratio is greater than 0.05.
7. The disk of claim 1 , wherein said contour depth and said bore width reduce a maximum hoop stress differential across said disk bore as compared to a disk bore having a contour depth equal to 0.