Airfoil turn caps in gas turbine engines

A method of manufacturing an airfoil, the method comprising:

• forming a hollow body defining a first airfoil cavity and a second airfoil cavity, the hollow body having an inner diameter end and an outer diameter end;
• forming a first airfoil platform at one of the inner diameter end and the outer diameter end of the hollow body, the first airfoil platform having a gaspath surface and a non-gaspath surface, wherein the hollow body extends from the gaspath surface;
• forming a first cavity opening in the non-gaspath surface of the first airfoil platform fluidly connecting to the first airfoil cavity;
• forming a second cavity opening formed in the non-gaspath surface of the first airfoil platform fluidly connecting to the second airfoil cavity;
• forming a first turn cap separately from the hollow body and the first airfoil platform;
• fixedly attaching the first turn cap to the first airfoil platform on the non-gaspath surface covering the first cavity opening of the first airfoil platform and the second cavity opening of the first airfoil platform and defining a first turning cavity such that the first cavity opening of the first airfoil platform is fluidly connected to the second cavity opening of the first airfoil platform and the first airfoil cavity is fluidly connected to the second airfoil cavity by the first turning cavity;
• and
• installing a first baffle within the first airfoil cavity.

An airfoil of a gas turbine engine comprising:

• a hollow body defining a first airfoil cavity and a second airfoil cavity, the hollow body having an inner diameter end and an outer diameter end;
• a first airfoil platform at one of the inner diameter end and the outer diameter end of the hollow body, the first airfoil platform having a gaspath surface and a non-gaspath surface, wherein the hollow body extends from the gaspath surface;
• a first cavity opening formed in the non-gaspath surface of the first airfoil platform fluidly connected to the first airfoil cavity;
• a second cavity opening formed in the non-gaspath surface of the first airfoil platform fluidly connected to the second airfoil cavity;
• a first turn cap fixedly attached to the first airfoil platform on the non-gaspath surface covering the first cavity opening of the first airfoil platform and the second cavity opening of the first airfoil platform and defining a first turning cavity such that the first cavity opening of the first airfoil platform is fluidly connected to the second cavity opening of the first airfoil platform by the first turning cavity,
• wherein the hollow body is a curved body that forms a bowed vane.