Fluid-coated turbine rator disc for a gas turbine engine
AssigneeROLLS-ROYCE plc
InventorAndrew Martin Rolt
Life of this patent
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Abstract
A rotor disc (15) has an axially enlarged hub portion (18) with a bore (20) through which a turbine shaft (19) extends in a coaxial, radially spaced apart relationship, the annular gap between the hub portion (18) and the shaft (19) receives a flow of temperature regulating fluid. The shaft (19) is provided with axially extending elongate projections (22) to increase the turbulence and relative velocity of the temperature regulating fluid adjacent the projections (22).
Claims7
A turbine for a gas turbine engines comprising a rotor disc having an inner hub portion, said inner hub portion being provided with an axial bore therethrough whereby said rotor disc accommodates a turbine shaft in a coaxial radially spaced-apart relationship, an annular channel being defined between said shaft and said inner hub portion for receiving a flow of temperature regulating fluid wherein a radially outer surface of said turbine shaft and/or a radially inner surface of said inner hub portion of said rotor disc is provided with generally axially extending elongate projections.
Dependencies are inferred from the claim text.