Assembly
AssigneeROLLS-ROYCE plc
InventorDavid Peter Scothern
Life of this patent
Estimating the term…
Abstract
A bladed rotor assembly includes a bladed rotor and a rotor housing. The bladed rotor has a plurality of blades arranged in a circumferential array around an axis of rotation, and the rotor housing encircles the bladed rotor and has a radially inwardly facing surface. Each of the blades comprises a first, radially extending, edge, a second opposite, radially extending, edge, and a radially distal edge. The radially distal edge has a first end, a second end, and a center portion, with the first end adjoining the first, radially extending, edge, and the second end adjoining the second, radially extending, edge. A clearance between the radially distal edge and the radially inwardly facing surface is a first clearance at the first end, and decreases to a second clearance across the center portion.
Claims9
A bladed rotor assembly comprising:
- a bladed rotor having a plurality of blades arranged in a circumferential array around an axis of rotation;
- and
- a rotor housing encircling the bladed rotor, the housing having a radially inwardly facing surface;
- each of the blades comprising:
- a first, radially extending, edge;
- a second opposite, radially extending, edge;
- and
- a radially distal edge;
- the radially distal edge having a first end, a second end, and a center portion, the first end adjoining the first, radially extending, edge, and the second end adjoining the second, radially extending, edge;
- wherein a clearance between the radially distal edge and the radially inwardly facing surface is a first clearance at the first end, and decreases to a second clearance across the center portion, and
- wherein the radially inwardly facing surface is substantially lineal in an axial direction, and the radially distal edge is profiled in a direction from the first end to the second end.
Dependencies are inferred from the claim text.