Turbomachinery shaft with variable lattice densities
AssigneeHamilton Sundstrand Corporation
InventorsBrent J. Merritt, Darryl A. Colson
Life of this patent
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Abstract
A rotating shaft for a rotary machine includes a first shaft portion centered on a central axis and a variable lattice structure in an interior of the rotating shaft. The variable lattice structure includes a first region of the rotating shaft having a first lattice structure and a second region of the rotating shaft having a second lattice structure. The second lattice structure of the second region is denser than the first lattice structure of the first region. The second region is a deflection region or a stress region of the rotating shaft.
Claims18
A rotating shaft for a rotary machine comprising:
- a first shaft portion centered on a central axis;
- a rib adjacent to a first side of the first shaft portion and extending radially inward from the first shaft portion;
- a flange adjacent to a second side of the first shaft portion and extending radially inward from the first shaft portion;
- a second shaft portion extending away from the second side of the first shaft portion and including a second side located axially away from the first shaft portion;
- and
- a variable lattice structure in an interior of the rotating shaft, the variable lattice structure comprises:
- a first region of the rotating shaft having a first lattice structure;
- and
- a second region of the rotating shaft having a second lattice structure;
- wherein the second lattice structure of the second region is denser than the first lattice structure of the first region;
- and
- wherein the second region is a deflection region or a stress region of the rib, the flange, or a region in the second side of the second shaft portion of the rotating shaft.
A rotary machine comprising:
- a tie rod extending through the rotary machine;
- and
- a rotating shaft mounted on the tie rod, wherein the rotating shaft comprises:
- a first shaft portion centered on a central axis;
- and
- a rib adjacent to a first side of the first shaft portion and extending radially inward from the first shaft portion;
- a flange adjacent to a second side of the first shaft portion and extending radially inward from the first shaft portion;
- a second shaft portion extending away from the second side of the first shaft portion and including a second side located axially away from the first shaft portion;
- and
- a variable lattice structure in an interior of the rotating shaft, the variable lattice structure comprises:
- a first region of the rotating shaft having a first lattice structure;
- and
- a second region of the rotating shaft having a second lattice structure;
- wherein the second lattice structure of the second region is denser than the first lattice structure of the first region;
- and
- wherein the second region is a deflection region or a stress region of the rib, the flange, or a region in the second side of the second shaft portion of the rotating shaft.
Dependencies are inferred from the claim text.