Patent ID: 8727726

Claim:
An airfoil, comprising: an inwardly facing endwall surface portion; an airfoil body having a radially outboard end attached to the inwardly facing endwall surface portion, a pressure surface and multiple fluid paths in an airfoil interior defined therein; and a fillet disposed at the radially outboard end of the airfoil body, the pressure surface being formed to define a single linear array of passages at a radial location defined with an entirety of a radial span of the fillet radially interposed between the passage and the inwardly facing endwall surface portion, the single linear array of passages being closer to a leading edge of the airfoil than a trailing edge and including passages that are each respectively configured to exclusively deliver coolant from only a corresponding one of each of the fluid paths in the airfoil interior in a perimetric direction from the pressure surface and toward the endwall surface portion such that the delivered coolant flows across a radially innermost edge of the fillet prior to reaching the endwall surface portion.