Engine Bearing Support

摘要

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.

主权项

1. A turbofan engine comprising:
an engine case; a gaspath through the engine case; a fan having a circumferential array of fan blades; a fan case encircling the fan blades radially outboard of the engine case; a plurality of fan case vanes extending outward from the engine case to the fan case; a front frame assembly comprising a plurality of vanes extending radially across the gas path; a shaft; a transmission coupling the shaft to a fan shaft to drive the fan; a bearing assembly coupling the shaft to the front frame assembly, the bearing assembly being a duplex bearing assembly; and a bearing support extending aftward and radially inward from the front frame assembly to the bearing assembly.