Reinforced gas turbine engine rotor disk
AssigneeUnited Technologies Corporation
InventorsAnthony R. Bifulco, Damon K. Brown, Nicholas Aiello
Life of this patent
Estimating the term…
Abstract
A structurally-reinforced rotor disk for a gas turbine engine is disclosed. The rotor disk may comprise a body including a rim configured to support airfoils (which may be separate or integral with the airfoils), an axially-extending bore disposed radially inward of the rim, and a radially-extending web connecting the rim and the bore. The bore may include an axial outer edge and at least one circumferentially-extending annular recess formed axially between the outer edge and the web. The rotor disk may further comprise an annular ring retained in the annular recess, and the annular ring may be formed from a different material than the body of the rotor disk so as to increase a self-sustaining radius of the rotor disk.
Claims20
A structurally-reinforced rotor disk for a gas turbine engine, comprising:
- a body including a rim configured to support airfoils, an axially-extending bore disposed radially inward of the rim, and a radially-extending web connecting the rim and the bore;
- the bore including an axial outer edge and at least one circumferentially-extending annular recess formed axially between the outer edge and the web;
- and
- an annular ring retained in the annular recess, the annular ring being formed from a different material than the body of the rotor disk so as to increase a self-sustaining radius of the rotor disk.
A gas turbine engine, comprising:
- a fan section;
- a compressor section downstream of the fan section;
- a combustor downstream of the compressor section;
- a turbine section downstream of the combustor;
- and
- a structurally-reinforced rotor disk in at least one of the fan section, the compressor section, and the turbine section, the rotor disk including
- a body including a rim supporting an airfoil, an axially-extending bore disposed radially inward of the rim, and a radially-extending web connecting the rim and the bore,
- the bore including an axial outer edge and a circumferentially-extending annular recess formed axially between the outer edge and the web, and
- an annular ring retained in the annular recess, the annular ring being formed from a different material than the body of the rotor disk so as to increase a self-sustaining radius of the rotor disk.
A method for fabricating a structurally-reinforced rotor disk for a gas turbine engine, comprising:
- providing a rotor disk including a rim, an axially-extending bore disposed radially inward of the rim, and a radially-extending web connecting the rim and the bore, the bore including an axial outer edge and a circumferentially-extending annular recess formed axially between the outer edge and the rim;
- winding one or more continuous filaments circumferentially through the annular recess of the bore;
- optionally, injecting a curable matrix into the annular recess;
- and
- curing the matrix to provide an annular ring in the annular recess, the annular ring structurally reinforcing the rotor disk.
Dependencies are inferred from the claim text.