Sealing element
AssigneeROLLS-ROYCE plc
InventorsJeffrey ALLEN, Adrian WRIGHT, Anthony GRASSBY, Barry LOWE, Kevin O'SULLIVAN, Philip CARROLL, Philip Gordon MINION
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Abstract
A sealing element for positioning radially outwardly of aerofoil blades of a gas turbine engine is provided. A radially inner surface region of the sealing element includes a seal structure having one or more inwardly projecting walls formed by additive layer, powder fed, laser weld deposition. The walls form a plurality of curved profile shapes which are arranged in a repeating pattern across the radially inner surface region. None of the walls intersects with any other wall. The curved profile shapes have no radii of curvature less than 0.5 mm.
Claims14
An abradable sealing element for positioning radially outwardly of aerofoil blades of a gas turbine engine, a radially inner surface region of the sealing element including a seal structure having one or more inwardly projecting walls formed by additive layer, powder fed, laser weld deposition, wherein:
- each of the inwardly projecting walls is continuous and defines at least one cell open at a radially inner side of the sealing element, each cell having a plurality of curved portions, the, or each wall, form a plurality of curved profile shapes which are arranged in a repeating pattern across the radially inner surface region,
- none of the walls intersects with any other wall, and
- the curved profile shapes have no radii of curvature less than 0.5 mm.
Dependencies are inferred from the claim text.