Cooled gas turbine engine aerofoil

Details Cooled gas turbine engine aerofoil Cooled gas turbine engine aerofoil

1991-02-04

1993-03-16

Look, Edward K.

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

416 97R, F01D 500

Patent

active

051939754

ABSTRACT:
The present invention relates to cooled gas turbine engine aerofoils particularly for turbine stator vanes or tubine rotor blades. The leading edge region of a hollow aerofoil is provided with rows of cooling air passages, which are arranged, in operation, to direct cooling air in the opposite direction to the local flow of the hot gas stream. The cooling air passages are substantially parallel, and have relatively large diameters to reduce the possibility of blockage of the cooling air passages by sand. An air guide tube in the hollow aerofoil is provided with large apertures at its leading edge to minimize the area for sand to adhere to.

REFERENCES:
patent: 2340417 (1941-10-01), Ellett
patent: 3627443 (1971-12-01), Pirzer
patent: 4056332 (1977-11-01), Meloni
patent: 4153386 (1979-05-01), Leogrande et al.
patent: 4168938 (1979-09-01), Dodd

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