Funnel fillet turbine stage

摘要

A turbine stage includes a row of airfoils (14) and their platforms (16) spaced laterally apart to define flow passages (36) therebetween. Each airfoil (14) is integrally joined to its platform (16) at a funnel-shaped fillet (38) along the pressure side (20) of the airfoil (14) which decreases in size from the leading edge towards the trailing edge. A field of film cooling holes (40) extends through the platform along the fillet (38) for discharging film cooling air.