Blades
AssigneeROLLS-ROYCE plc
InventorsStephen C. DIAMOND, Caner H. HELVACI, Roderick M. TOWNES
Life of this patent
Estimating the term…
Abstract
A rotor blade for a gas turbine engine has an aerofoil portion and a tip region. The tip region is at the radially outermost end of the blade. The radially outermost surface carries abrasive material (not shown) to interact with an abradable surface. The tip has a recess in which cooling air outlets are formed. The recess is open in a circumferential direction. This allows cooling air outlets to be formed without interference from the abrasive material, and inhibits any tendency for abrasion debris to collect in the recess and interfere with the flow of cooling air.
Claims15
A rotor blade having an aerofoil portion and a rotor tip at the radially outermost end of the blade, the tip having a recess in which cooling air outlets are formed, and the rotor tip includes at least one winglet which projects transversely to shroud the tip, and in which the recess is formed.
Dependencies are inferred from the claim text.