COOLED AIRFOIL FOR A GAS TURBINE, THE AIRFOIL HAVING MEANS PREVENTING ACCUMULATION OF DUST

An airfoil (310) for a gas turbine engine includes a first side wall (312); a second side wall (314) joined to the first side wall at a leading edge and a trailing edge; and an internal cooling system arranged within the first and second side walls. The internal cooling system has a first cooling ci...

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Bibliographische Detailangaben
Hauptverfasser:	RIAHI, Ardeshir, MORRIS, Mark C, HALFMANN, Steve, CRITES, Daniel C
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:	An airfoil (310) for a gas turbine engine includes a first side wall (312); a second side wall (314) joined to the first side wall at a leading edge and a trailing edge; and an internal cooling system arranged within the first and second side walls. The internal cooling system has a first cooling circuit (430) that includes an acceleration channel (460) generally extending in a radial outward direction. A first section of the acceleration channel decreases in cross-sectional area along the radial outward direction such that the cooling air is accelerated through the first section of the acceleration channel. The first cooling circuit further includes a trailing edge chamber (480) fluidly coupled to receive at least a portion of the cooling air from the acceleration channel and extending generally in a chordwise aft direction from the acceleration channel to the trailing edge.