Method for forming a liquid cooled airfoil for a gas turbine

Details Method for forming a liquid cooled airfoil for a gas turbine Method for forming a liquid cooled airfoil for a gas turbine

1979-06-01

1981-02-10

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291573R, 291573C, 29557, 228183, 228126, B23P 1504

Patent

active

042492912

ABSTRACT:
A method for forming a liquid cooled airfoil for a gas turbine is disclosed. A plurality of holes are formed at spaced locations in an oversized airfoil blank. A pre-formed composite liquid coolant tube is bonded into each of the holes. The composite tube includes an inner member formed of an anti-corrosive material and an outer member formed of a material exhibiting a high degree of thermal conductivity. After the coolant tubes have been bonded to the airfoil blank, the airfoil blank is machined to a desired shape, such that a portion of the outer member of each of the composite tubes is contiguous with the outer surface of the machined airfoil blank. Finally, an external skin is bonded to the exposed outer surface of both the machined airfoil blank and the composite tubes.

REFERENCES:
patent: 2641439 (1953-06-01), Williams
patent: 2983994 (1961-05-01), Johnson
patent: 3305918 (1967-02-01), Christen et al.
patent: 3446481 (1969-05-01), Kydd
patent: 3446482 (1969-05-01), Kydd
patent: 3773506 (1973-11-01), Larker et al.
patent: 4119390 (1978-10-01), Dakin et al.
patent: 4137619 (1979-02-01), Beltran et al.
patent: 4156582 (1979-05-01), Anderson
patent: 4185369 (1980-01-01), Darrow et al.

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