Dust resistant airfoil cooling

Details Dust resistant airfoil cooling Dust resistant airfoil cooling

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/18 (2006.01)

Patent

CA 2313932

A turbine airfoil 12 includes first and second sidewalls 22,24 joined together at leading and trailing edges 26,28, and extending longitudinally from root 32 to tip 34. An internal cooling circuit 38 is disposed between the sidewalls for channeling a coolant therein. A column of longitudinally spaced apart ejection slots 40 extend through the first sidewall along the trailing edge, and are disposed in flow communication with the cooling circuit for discharging the coolant toward the trailing edge. Some of the slots are disposed between a pitchline 36 and the tip and are inclined at different ejection angles longitudinally outwardly from the pitchline. And, some of the slots are disposed between the pitchline and root and extend at least parallel with the pitchline without longitudinally inward inclination.

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