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US 8,297,925 B2Granted
Aerofoil configuration
AssigneeROLLS-ROYCE plc
InventorDavid W. Barrett
Life of this patent
Estimating the term…
Abstract
A turbine blade comprising a pressure wall and a suction wall joined together at leading and trailing edges and having a root portion and a blade tip region, the walls further define a hollow chamber and through which cooling air is directed in use from the root portion to the blade tip region only, characterized in that at least one of the walls defines at least one cooling rib that extends outwardly from the wall into the chamber and at least a portion of the rib tapers between the root portion and a blade tip region.
Claims18
A turbine blade for use on a rotor, the blade comprising:
- a pressure wall;
- a leading edge;
- a trailing edge;
- a root portion;
- a blade tip region;
- and
- a suction wall,
- wherein the pressure wall and the suction wall are joined together at the leading and trailing edges,
- the pressure wall and the suction wall define a hollow chamber through which cooling air is directed in use from the root portion to the blade tip region only,
- at least one of the pressure wall and the suction wall defines a plurality of elongate and radially extending ribs having a width and height, each of the ribs extending from one of the pressure wall and the suction wall into the hollow chamber, and
- at least a portion of each of the plurality of ribs tapers in the radial direction between the root portion and the blade tip region.
8 more elements
Dependencies are inferred from the claim text.