Turbine rotor construction

Claim 2

A turbine rotor construction including: a disk having blade slots in the periphery; blade positioning tubes having roots fitting in said slots and extending radially outward therefrom; ceramic blades positioned on said tubes and radially slidable thereon, the outer end of the blade extending radially beyond the tube; a filament wound ring surrounding said blades and engageable with the outer ends thereof, the ring being out of contact with the ends of the tubes; and a spring ring mounted on the disk and engaging the inner ends of the blades to hold the blades against the ring.

Claim 3

A rotor construction as in claim 1 in which the tube is hollow for the flow of cooling air to the outer end of the ceramic blade.

Claim 4

A rotor construction as in claim 2 in which the outer end of each blade has ribs thereon to define flow passages for the cooling air from the blades.

Claim 5

A rotor construction as in claim 1 in which the outer end of each blade has a shroud element with the shroud elements on adjacent blades substantially in circumferential engagement.

Claim 6

A rotor construction as in claim 1 in which said spring ring extends over the blade slots to reduce flow losses through the slots.

Claim 7

A rotor construction as in claim 1 in which the tube is non-cylindrical and blade has similar shaped cooperating passage so that tube prevents turning of blade on its radial axis.

Claim 8

A turbine rotor assembly including: a disk having axial slots in its periphery; blade positioning posts having inner end roots engaging said slots and extending radially outward therefrom; ceramic blades positioned on said posts and radially slidable thereon, the outer ends of the blades being radially outward of the ends of the posts, said blades having outer end shrouds; a filament wound restraining ring surrounding said blades and engaging the outer end shrouds to position the blades on the posts; a spring ring mounted on the disk and engaging the inner ends of the blades to hold them against the retaining ring; and means for supplying coolant through said posts to said outer shrouds.

Claim 9

A turbine rotor assembly including: a disk having axial slots in its periphery; blade positioning posts having inner end roots engaging said slots and extending radially outward therefrom; ceramic blades positioned on said posts and radially slidable thereon, the outer ends of the blades being radially outward of the ends of the posts, said blades having outer end shrouds; a filament wound restraining ring surrounding said blades and engaging the outer end shrouds to position the blades on the posts; a spring ring mounted on the disk and engaging the inner ends of the blades to hold them against the retaining ring; and means for supplying coolant through said posts to said outer shrouds.

Claim 10

An assembly as in claim 7 wherein the posts are non-cylindrical and the blades have correspondingly shaped passages to accept the posts.

Claim 11

An assembly as in claim 7 in which the disk has coolant passages communicating with slots, and the posts have longitudinal passages to deliver coolant therethrough to the outer shrouds.

Claim 12

An assembly as in claim 7 in which the outer shrouds have ribs on the outer surfaces to engage with the restraining ring and define coolant passages between the shroud and ring.

Claim 13

An assembly as in claim 10 in which each post has a flange extending inwardly from the root and overlying the disk to be engaged by the spring ring.

Claim 14

An assembly as in claim 11 in which the disk has interrupted annular ribs thereon engaging the post flanges to hold the posts in position.