Tubine airfoil with variable and compound fillet

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 sidewalls (22, 24) extending between leading and trailing edges (14, 16). A compound fillet is disposed between the airfoil body and at lea...

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Bibliographische Detailangaben
Hauptverfasser:	BAILEY, JAMES ROBERT, LEE, CHING-PANG, GUENTERT, JOSEPH MICHAEL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	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 sidewalls (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).