AIRCRAFT GAS TURBINE ENGINE VARIABLE FAN BLADE MECHANISM

A variable pitch fan assembly 38 includes variable pitch fan blades 60 circumscribed about engine centerline axis 12 coupled to a drive shaft 26 centered about the engine centerline axis 12. Each blade 60 pivotable about pitch axis (P) perpendicular to centerline axis 12 and having blade turning lev...

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Bibliographische Detailangaben
Hauptverfasser:	MARTINEZ ARTEAGA, Daniela, GARCIA LOPEZ DE LLERGO, Carla, LOPEZ GUZMAN, Aldo Daniel, DEL ANGEL DURAN, Alberto, CORONA ACOSTA, Ileana Prisabel
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 variable pitch fan assembly 38 includes variable pitch fan blades 60 circumscribed about engine centerline axis 12 coupled to a drive shaft 26 centered about the engine centerline axis 12. Each blade 60 pivotable about pitch axis (P) perpendicular to centerline axis 12 and having blade turning lever 210 connected thereto. One or more linear actuators 70 non rotatably mounted parallel to engine centerline axis 12 and operably linked to fan blades 60 for pivoting fan blades and connected to spider ring 214 through thrust bearings 80 for transmission of axial displacement of non-rotatable actuator rods 220 of actuators 70 while the fan blades 60 are rotating. Spider arms 216 extending away from spider ring 214 towards blade roots 204 and each spider arm 216 connected to one of the turning levers 210. Turning levers 210 may be connected and cammed to spider arms 216 by pin and slot joint 224. Each spider arm 216 may include joint pin 226 disposed through joint slot 228 of turning lever 210. Joint slot 228 may be angled or curved.