COUNTERCOOLED TURBINE NOZZLE

摘要

A turbine nozzle (20) includes a mid vane (24) mounted between a pair of e nd vanes (26) in outer and inner bands (28,30). The mid vane (24) includes a first pattern of film cooling holes (56,58,60) configured to discharge more cooling air th an each of the two end vanes having respective second patterns of film cooling holes (56,58).