Turbine disc with reduced neck stress concentration
AssigneeUnited Technologies Corporation
InventorsLoc Quang Duong, Xiaolan Hu
Life of this patent
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Abstract
A disc with two sides includes a hub having a bore and a bore radius, a neck, and a rim. The neck is connected to and radially outward of the hub and has an inner wedge with a curved section on one side of the disc, an outer wedge with a curved section on that same side of the disc, and a center section between the wedges with a flat side on that same side of the disc. The rim is connected to and radially outward of the neck, the rim having a radius that is no more than seven times greater than the bore radius.
Claims20
A disc with a first side and a second side, the disc comprising:
- a hub including a bore with a bore radius;
- a neck connected to and radially outward of the hub, the neck comprising:
- an inner wedge with a first concave curved section on the first side of the disc including a first radius of curvature;
- an outer wedge with a second concave curved section on the first side of the disc including a second radius of curvature;
- and
- a center section extending between the inner wedge and the outer wedge, the center section including a first flat side on the first side of the disc;
- and
- a rim connected to and radially outward of the neck, the rim including a rim radius that is no more than seven times greater than the bore radius.
A gas turbine engine comprising:
- a compressor section;
- a combustor section downstream of the compressor section, the combustor section including an inner radius;
- and
- a turbine section downstream of the combustor section, the turbine section including a rotor with an outer radius that is no more than 0.83 times as large as the inner radius of the combustor, the rotor including a disc with a first side, a second side and a neck comprising:
- an inner wedge with a first concave curved section on the first side of the disc;
- an outer wedge with a second concave curved section on the first side of the disc;
- and
- a center section extending between the inner wedge and the outer wedge, the center section including a first flat side on the first side of the disc.
A gas turbine engine comprising:
- a compressor section;
- a combustor section downstream of the compressor section;
- and
- a turbine section downstream of and substantially surrounded by the combustor section, the turbine section including a disc with a first side, a second side and a neck comprising:
- an inner wedge with a first concave curved section on the first side of the disc;
- an outer wedge with a second concave curved section on the first side of the disc;
- and
- a center section extending between the inner wedge and the outer wedge, the center section including a first flat side on the first side of the disc.
Dependencies are inferred from the claim text.