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US 10,294,954 B2Granted
Composite blisk
AssigneeRolls-Royce North American Technologies Inc.
InventorEdward C. Rice
Life of this patent
Estimating the term…
Abstract
A composite turbomachine comprises a hub comprised of fiber and resin and a plurality of blade assemblies. Each blade assembly comprises a blade, a base, and a tang. The plurality of blade assemblies are arranged circumferentially around the hub, each interlocking with an adjacent blade assembly and retained in position by the hub and a band overwrapping the respective tang of each of the plurality of blade assemblies.
Claims20
A composite turbomachine comprising:
- a hub comprised of fiber and resin;
- the hub having a radially inner surface, a radially outer surface and a first edge;
- a plurality of blade assemblies, each one of the plurality of blade assemblies comprising:
- a blade;
- a base having an outer portion, an inner portion, and a radially oriented leg connecting the outer portion and the inner portion, the base defining a slot opening between the outer portion and the inner portion and terminating at the radially oriented leg, wherein said slot receives the hub and the blade is mounted on the outer portion of the base;
- a tang axially extending from the outer portion;
- and
- wherein the plurality of blade assemblies are arranged circumferentially around the hub, each interlocking with an adjacent blade assembly and retained in position by the hub and a band overwrapping the respective tang of each of the plurality of blade assemblies.
5 more elements
A method of manufacturing a bladed hub of a turbo machine comprising:
- winding fibers and resin over a mandrel to form a hub;
- attaching a plurality of blade assemblies circumferentially around the hub where each of the blade assemblies have a blade, a hook, and a tang;
- the blade extending radially outward from the hub, the hook extending radially inward from the hub, and the tang extending axially away from the blade;
- winding fibers and resin around the tang of each blade assembly;
- and
- curing the fibers and resin.
3 more elements
A blisk for an axial flow compressor comprising:
- a hub adapted to be rotatable about an axis of rotation;
- a plurality of blade assemblies comprising a blade coupled to a platform member, the platform member having an outer portion, a inner portion and a radially oriented leg connecting the outer portion and the inner portion, and defining a slot opening between the outer portion and the inner portion, said slot receiving the hub;
- a tang axially extending from the outer portion;
- wherein the plurality of blade assemblies are circumferentially arranged on the hub in stages;
- and
- a wound band which at least partially covers the tang of each of the plurality of blade assemblies.
3 more elements
Dependencies are inferred from the claim text.