United Technologies Corporation

Raytheon Technologies Corporation

Jason W Mazanec

Enzo DiBenedetto

Gregory E Reinhardt

John C DiTomasso

John P Tirone

Karl D Blume

Enzo Dibenedetto

A turbofan engine comprises an engine case. A gaspath extends through the engine case. A fan has a circumferential array of fan blades. A fan case encircles the fan blades radially outboard of the engine case. A plurality of fan case vanes extend aftward and outward from the engine case to the fan case. A forward frame comprises a plurality of vanes radially across the gaspath. A torque box couples the fan case vanes to the forward frame. A transmission couples a shaft to a fan shaft to drive the fan. A fan bearing assembly couples a stationary forward hub structure to the fan shaft.

Fan rotor support

A turbofan engine comprises an engine case. A gaspath extends through the engine case. A fan has a circumferential array of fan blades. A fan case encircles the fan blades radially outboard of the engine case. A plurality of fan case vanes extend outward from the engine case to the fan case. A front frame assembly includes a plurality of vanes extending radially across the gaspath. A transmission couples a shaft to a fan shaft to drive the fan. A bearing assembly couples the shaft to the front frame assembly. A bearing support extends aftward and radially inward from the front frame assembly to the bearing assembly.

Engine bearing support

An assembly includes a first tapered roller bearing and a second tapered roller bearing and a bellows spring. The bellows spring is disposed adjacent the first tapered roller bearing and the second tapered roller bearing.

Bellows preload and centering spring for a fan drive gear system

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Vernon, CT, United States of America

Jason W Mazanec