AXIAL CASE RING TO MAXIMIZE THRUST BUSHING CONTACT AREA OF VARIABLE VANE

The present disclosure provides a variable vane system and method of manufacture for a turbofan gas turbine engine used for powering an aircraft in flight. The variable vane system has an arcuate casing and a plurality of vane assemblies arranged circumferentially around the casing. The individual v...

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Bibliographische Detailangaben
Hauptverfasser:	ERTMAN, ALEX, ACKER, JONATHAN, AKER, GRACE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The present disclosure provides a variable vane system and method of manufacture for a turbofan gas turbine engine used for powering an aircraft in flight. The variable vane system has an arcuate casing and a plurality of vane assemblies arranged circumferentially around the casing. The individual vane assemblies include a penny bore extending radially outward from the inner surface of the arcuate casing. A bushing bore extends radially inward from the outer surface of the arcuate casing and a spindle bore extending between and connecting the penny bore and the bushing bore. Each of the penny bore, bushing bore and spindle bore share a common axis and the penny bore and the bushing bore have inner diameters greater than the inner diameter of the spindle bore.