F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
170/71
F04D 29/58 (2006.01) B23P 15/04 (2006.01) F01D 5/18 (2006.01)
Patent
CA 1132456
51DV 2612 METHOD FOR FORMING A LIQUID COOLED AIRFOIL FOR A GAS TURBINE ABSTRACT OF THE DISCLOSURE 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.
352163
Grondahl Clayton M.
Muth Myron C.
Willmott Leo C.
Company General Electric
Eckersley Raymond A.
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