Notched turbine vane baffle

An assembly for a turbine engine, comprising:

• an airfoil extending spanwise from an airfoil inner end to an airfoil outer end, the airfoil extending longitudinally from an airfoil leading edge to an airfoil trailing edge, the airfoil extending laterally between an airfoil first side and an airfoil second side with the airfoil second side meeting the airfoil first side at the airfoil leading edge and the airfoil trailing edge, and a cavity projecting spanwise into the airfoil from the airfoil outer end towards the airfoil inner end;
• and
• a baffle disposed in the cavity with an outer passage formed between the baffle and a wall of the airfoil, the baffle extending spanwise from a baffle outer end to a baffle inner end, the baffle extending longitudinally from a baffle end to a baffle trailing edge, the baffle extending laterally between a baffle first side and a baffle second side with the baffle second side meeting the baffle first side at the baffle trailing edge, an inner passage projecting spanwise into the baffle from the baffle outer end towards the baffle inner end, one or more notches formed along the baffle trailing edge, and the one or more notches fluidly coupling the inner passage to the outer passage;
• wherein an outer portion of the baffle trailing edge spanwise between the one or more notches and the baffle outer end fluidly decouples the inner passage from the outer passage, and a spanwise length of the outer portion of the baffle trailing edge is equal to or greater than one-half of a spanwise length of the baffle trailing edge from the baffle inner end to the baffle outer end.

An apparatus for a turbine vane in a turbine engine, comprising:

• a baffle comprising sheet metal and a plurality of notches, the sheet metal forming the baffle with an endwall, a first sidewall, a second sidewall and an internal passage;
• the endwall, the first sidewall and the second sidewall each extending spanwise from an inner end of the baffle to an outer end of the baffle;
• the endwall extending laterally between the first sidewall and the second sidewall;
• the first sidewall and the second sidewall projecting longitudinally out from the endwall and meeting at a trailing edge of the baffle;
• the internal passage extending spanwise through the baffle, the internal passage extending longitudinally within the baffle from the endwall to an intersection between the first sidewall and the second sidewall at the trailing edge of the baffle, and the internal passage extending laterally within the baffle from the first sidewall to the second sidewall;
• and
• the plurality of notches disposed in and arranged spanwise along the trailing edge of the baffle, each of the plurality of notches projecting laterally through and longitudinally into at least one of the first sidewall and the second sidewall;
• wherein an outer portion of the trailing edge of the baffle spanwise between the plurality of notches and the outer end of the baffle is unperforated, and a spanwise length of the outer portion of the trailing edge of the baffle is equal to or greater than one-half of a spanwise length of the trailing edge of the baffle from the inner end of the baffle to the outer end of the baffle.