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A gas turbine engine rotor disk assembly includes a disk having an annular hub circumscribed about a centerline. An annular web extends radially outwardly from the hub to an annular rim. A plurality of dovetail slots extend generally axially through the rim. A plurality of cooling air slots extendin

A gas turbine engine rotor disk assembly includes a disk having an annular hub circumscribed about a centerline. An annular web extends radially outwardly from the hub to an annular rim. A plurality of dovetail slots extend generally axially through the rim. A plurality of cooling air slots extending generally radially through the rim and are skewed circumferentially with respect to the centerline and slanted axially aftwardly with respect to a normal radius perpendicular to the centerline. In the exemplary embodiment, each cooling air slot has parallel side walls skewed circumferentially with respect to the centerline and an aft wall extending between the side walls and slanted axially aftwardly with respect to the normal radius. The side walls are skewed circumferentially about 5 degrees with respect to the centerline and the aft wall is slanted axially aftwardly about 18 degrees with respect to the normal radius.

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1. A gas turbine engine rotor disk comprising: an annular hub circumscribed about a centerline; an annular web extending radially outwardly from said hub; an annular rim disposed on a radially outer end of said web; a plurality of dovetail slots extending generally axially through said ri

1. A gas turbine engine rotor disk comprising: an annular hub circumscribed about a centerline; an annular web extending radially outwardly from said hub; an annular rim disposed on a radially outer end of said web; a plurality of dovetail slots extending generally axially through said rim; a plurality of cooling air slots extending generally radially through said rim; and said cooling air slots skewed circumferentially with respect to said centerline and slanted axially aftwardly along their entireties with respect to a normal radius perpendicular to said centerline. 2. A disk as claimed in claim 1 wherein each of said cooling air slots includes parallel side walls skewed circumferentially with respect to said centerline and an aft wall extending between said side walls and slanted axially aftwardly with respect to said normal radius to said centerline.3. A disk as claimed in claim 2, further comprising: a fillet between each of said side walls and said aft wall, each fillet having a fillet radius of curvature, said aft wall being curved and having a wall radius of curvature, and said wall radius of curvature being about equal to a width of said cooling air slot between side walls. 4. A disk as claimed in claim 3 wherein said wall radius of curvature is about four times larger than said fillet radius of curvature.5. A disk as claimed in claim 4 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.6. A disk as claimed in claim 3 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.7. A disk as claimed in claim 2 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.8. A disk as claimed in claim 2 further comprising: rim tabs circumferentially disposed around said rim and extending radially inwardly from a forward end of said rim, and said cooling air slots extending between at least some of said rim tabs.9. A disk as claimed in claim 8, further comprising: a fillet between each of said side walls and said aft wall, each fillet having a fillet radius of curvature, said aft wall being curved and having a wall radius of curvature, and said wall radius of curvature being about equal to a width of said cooling air slot between side walls. 10. A disk as claimed in claim 9 wherein said wall radius of curvature is about four times larger than said fillet radius of curvature.11. A disk as claimed in claim 10 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.12. A gas turbine engine rotor disk assembly comprising: a disk having an annular hub circumscribed about a centerline; an annular web extending radially outwardly from said hub; an annular rim disposed on a radially outer end of said web; a plurality of dovetail slots extending generally axially through said rim; a plurality of cooling air slots extending generally radially through said rim; said cooling air slots skewed circumferentially with respect to said centerline and slanted axially aftwardly along their entireties with respect to a normal radius perpendicular to said centerline, and an annular face plate disposed axially forward of said web and engaging said disk at radially spaced apart radial inner and outer locations of the assembly forming an annular flow passage between said disk and said plate between said locations. 13. An assembly as claimed in claim 12 further comprising a bayonet connection between said disk and plate at said outer location.14. An assembly as claimed in claim 13 further comprising a bolted connection between said disk and plate at said inner location.15. An assembly as claimed in claim 14 further comprising: rim tabs circumferentially disposed around said rim and extending radially inwardly from a forward end of said rim, said cooling air slots extending between at least some of said rim tabs, and plate tabs extending radially outwardly from said plate at said outer location. 16. An assembly as claimed in claim 14 wherein each of said cooling air slots further includes parallel side walls skewed circumferentially with respect to said centerline and an aft wall extending between said side walls and slanted axially aftwardly with respect to said normal radius to said centerline.17. An assembly as claimed in claim 16, further comprising: a fillet between each of said side walls and said aft wall, each fillet having a fillet radius of curvature, said aft wall being curved and having a wall radius of curvature, and said wall radius of curvature being about equal to a width of said cooling air slot between side walls. 18. An assembly as claimed in claim 17 wherein said wall radius of curvature is about four times larger than said fillet radius of curvature.19. An assembly as claimed in claim 18 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.20. An assembly as claimed in claim 17 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.21. An assembly as claimed in claim 16 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.22. An assembly as claimed in claim 16 wherein said bayonet connection further comprises: rim tabs circumferentially disposed around said rim and extending radially inwardly from a forward end of said rim, said cooling air slots extending between at least some of said rim tabs, and plate tabs extending radially outwardly from said plate at said outer location. 23. An assembly as claimed in claim 22, further comprising: a fillet between each of said side walls and said aft wall, each fillet having a fillet radius of curvature, said aft wall being curved and having a wall radius of curvature, and said wall radius of curvature being about equal to a width of said cooling air slot between side walls. 24. An assembly as claimed in claim 23 wherein said wall radius of curvature is about four times larger than said fillet radius of curvature.25. An assembly as claimed in claim 24 wherein said side walls are skewed circumferentially about 5 degrees with respect to said centerline and said aft wall is slanted axially aftwardly about 18 degrees with respect to said normal radius to said centerline.