Turbofan engine comprising a fan rotor support

DRIVE December 19, 2012
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A turbofan engine (20) comprises an engine case (22). A gaspath extends through the engine case (22). A fan (42) has a circumferential array of fan blades (100). A fan case (40) encircles the fan blades (100) radially outboard of the engine case (40). A plurality of fan case vanes (44) extend aftward and outward from the engine case (22) to the fan case (40). A forward frame comprises a plurality of vanes radially across the gaspath. A torque box (186) couples the fan case vanes (44) to the forward frame. A transmission (46) couples a shaft (25) to a fan shaft (132) to drive the fan (42). A fan bearing assembly (150) couples a stationary forward hub structure (152) to the fan shaft (25).

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