US Patent 10890072 Endwall contour

An airfoil array includes an endwall. A first airfoil and a second airfoil each extend radially from the endwall and have a first side and an opposite second side that extend along an axial chord between a leading edge and a trailing edge. A first profiled region protrudes from the endwall along the first side of the first airfoil. A second profiled region protrudes from the endwall along the leading edge of the second side of the second airfoil adjacent the leading edge of the second airfoil. A third profiled region recessed into the endwall approximately equidistant from the first side of the first airfoil and the second side of the second airfoil.