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Title: Method for forming a liquid cooled airfoil for a gas turbine

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.

Inventors:
 [1];  [2];  [3]
  1. (Clifton Park, NY)
  2. (Ballston Spa, NY)
  3. (Amsterdam, NY)
Issue Date:
Research Org.:
General Electric Co
OSTI Identifier:
863791
Patent Number(s):
4249291
Assignee:
General Electric Company (Schenectady, NY) OSTI
DOE Contract Number:  
EX-76-C-01-1806
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Grondahl, Clayton M., Willmott, Leo C., and Muth, Myron C. Method for forming a liquid cooled airfoil for a gas turbine. United States: N. p., 1981. Web.
Grondahl, Clayton M., Willmott, Leo C., & Muth, Myron C. Method for forming a liquid cooled airfoil for a gas turbine. United States.
Grondahl, Clayton M., Willmott, Leo C., and Muth, Myron C. Thu . "Method for forming a liquid cooled airfoil for a gas turbine". United States. https://www.osti.gov/servlets/purl/863791.
@article{osti_863791,
title = {Method for forming a liquid cooled airfoil for a gas turbine},
author = {Grondahl, Clayton M. and Willmott, Leo C. and Muth, Myron C.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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