Airfoils with low-angle holes and methods for drilling same
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United States of America Patent
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Jun 11, 2019
Grant Date -
Jul 2, 2015
app pub date -
Sep 26, 2013
filing date -
Sep 26, 2013
priority date (Note) -
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Abstract
A method for fabricating an airfoil includes forming a diffuser section in an exterior surface of the airfoil. The diffuser section is defined by at least an outer surface and an inner surface that converge at a stop surface. The method also includes positioning a drilling element of a drilling device on the stop surface. The method further includes orienting the drilling element at a first angle relative to the exterior surface. The method also includes forming, using the drilling element, a cooling channel extending through the airfoil from the stop surface to an interior surface, thereby forming the cooling channel at substantially the first angle.
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