Turbine airfoil with variable and compound fillet

Details Turbine airfoil with variable and compound fillet Turbine airfoil with variable and compound fillet

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/14 (2006.01) F01D 9/04 (2006.01)

Patent

CA 2548168

A turbine airfoil may be a rotating blade having a single platform, or a stationary nozzle having a pair of platforms. The airfoil body has pressure and suction sidewalk (22, 24) extending between leading and trailing edges (14, 16). A compound fillet is disposed between the airfoil body and at least one of the platforms. The compound fillet includes a concave first fillet having a first radius, and a concave second fillet having a second, greater radius. The second fillet extends from the leading edge (14) downstream along the suction sidewall (24) and terminates at a point upstream of the trailing edge (16). The second fillet may also extend downstream from the leading edge (14) along the pressure sidewall (22).

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