Fan or compressor blisk
AssigneeROLLS-ROYCE plc
InventorsNigel J D Chivers, Paul Spencer Topliss
Life of this patent
Estimating the term…
Abstract
A fan or compressor blisk for a gas turbine engine, lift fan or the like, comprises a disc having a radially outer rim, and a plurality of aerofoil blades circumferentially spaced around and extending radially outwards from the rim. The rim has a radially inward facing surface on its underside on at least one side of the disc, the radially inward facing surface having at least one indentation for reducing the cross-sectional area of the rim, in the circumferential direction of the disc, in the region of the indentation.
Claims11
A fan or compressor blisk for a gas turbine engine, lift fan or the like, the blisk comprising:
- a disc having a hub,
- a radially outer rim,
- a web extending between the hub and the rim, and
- a plurality of aerofoil blades circumferentially spaced around and extending radially outwards from an outer surface of the rim, the rim having a radially inward facing surface on an underside of the rim on at least one side of the disc, the radially inward facing surface having at least one indentation with a relatively constant radial depth in an axial direction of the blisk for reducing a cross-sectional area of the rim, in a circumferential direction of the disc, in the region of the indentation.
Dependencies are inferred from the claim text.