Cooled turbine blade

Details Cooled turbine blade Cooled turbine blade

1982-10-26

1987-08-04

Walsh, Donald P.

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

416 92, 416 96A, 416 96R, 416 97R, 415175, B63H 114

Patent

active

046843221

ABSTRACT:
The blade has an aerofoil body 10 having a leading edge surface 11 which is cooled by air passing through a helical first passage 12 having first portions passing close to said leading edge surface and alternating with second portions passing through a more nearly central part of the blade section remote from said leading edge. A spanwise but straight second passage 15 extends through the blade in a position within the helical passage and closer to the second than the first portions thereof. Heat abstracted from the leading edge by air flow in said first portions is transferred by the flow to the second portions and from there through the blade material to the flow in the straight passage.

REFERENCES:
patent: 3533712 (1970-10-01), Kercher
patent: 3834831 (1974-10-01), Mitchell
patent: 3844679 (1974-10-01), Grondahl et al.
patent: 4118145 (1978-10-01), Stahl

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