Power turbine nozzles in gas turbine engines

A power turbine nozzle for a gas turbine engine, the power turbine nozzle including at least one of a third-stage nozzle, a fourth-stage nozzle, or a fifth-stage nozzle, the power turbine nozzle comprising:

• a platform;
• and
• an airfoil extending in a spanwise direction from the platform to a tip shroud, the airfoil having an external airfoil surface formed in conformance with multiple cross-section airfoil profiles described by a set of Cartesian coordinates set forth in one of Tables 1 to 3.

A gas turbine engine comprising:

• a power turbine nozzle having an array of airfoils, wherein at least one airfoil of the array of airfoils has a leading edge and a trailing edge that are joined by spaced-apart pressure and suction sides to provide an external airfoil surface extending from a platform in a span direction to a tip shroud;
• and
• wherein the external airfoil surface is formed in conformance with multiple cross-section profiles of the at least one airfoil described by a set of Cartesian coordinates set forth in one of Tables 1 to 3, the Cartesian coordinates provided by an axial coordinate scaled by a local axial chord, a circumferential coordinate scaled by the local axial chord, and a span location, wherein the local axial chord corresponds to a width of the at least one airfoil between the leading edge and the trailing edge at the span location.