TURBINE NOZZLE SEGMENT, TURBINE NOZZLE, TURBINE, AND GAS TURBINE ENGINE

摘要

A turbine nozzle segment, a turbine nozzle, a turbine, and a gas turbine engine. The turbine nozzle segment is provided with an outer band 39 of an arc shape, an inner band 41 of an arc shape, a thick stator vane 43 in which an insertion hole 49 to which a probe 47 is insertable from a side of the outer band 39 is formed and on the pressure surface 43b of which an inlet hole 51 communicating with the insertion hole 49 is formed, and a thin stator vane 45 having a suction surface 45a having an identical shape to a suction surface 43a of the thick stator vane 43 and a smooth pressure surface 45b approximating to a pressure surface 43b of the thick stator vane 43 configured to be thinner than the thick stator vane.