| 摘要 |
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). |
