Method for forming a liquid cooled airfoil for a gas turbine

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:863791

Grondahl, Clayton M ^[1]; Willmott, Leo C ^[2]; Muth, Myron C ^[3]

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1. Clifton Park, NY
2. Ballston Spa, NY
3. Amsterdam, NY

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.

• Research Organization: General Electric Co., Boston, MA (United States)
• DOE Contract Number: EX-76-C-01-1806
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 4249291
• OSTI ID: 863791
• Country of Publication: United States
• Language: English

Related Subjects

method
forming
liquid
cooled
airfoil
gas
turbine
disclosed
plurality
holes
formed
spaced
locations
oversized
blank
pre-formed
composite
coolant
tube
bonded
inner
anti-corrosive
material
outer
exhibiting
degree
thermal
conductivity
tubes
machined
desired
shape
portion
contiguous
surface
finally
external
exposed
coolant tubes
cooled air
liquid coolant
composite tube
thermal conductivity
gas turbine
outer surface
desired shape
coolant tube
liquid cooled
spaced locations
cooled airfoil
material exhibiting
corrosive material
/29/228/416/