ANORDNUNG AUS ANTRIEBSTURBINE UND UEBERSETZUNGSGETRIEBE

摘要

A power turbine and first stage gear reduction assembly for a gas coupled gas turbine engine includes a first stage reduction gear, a tubular pinion shaft carrying a first stage pinion gear, and a power turbine shaft having a power turbine at a turbine end thereof. The first stage pinion gear and the first stage reduction gear are straddle mounted on an engine block of the gas turbine engine for rotation about parallel primary and secondary axes of the engine, respectively, and in meshing engagement. The power turbine shaft is aligned on the primary axis with a power transfer end thereof within and connected to the pinion shaft through a self-holding taper connection so that the power transfer end of the pinion shaft is supported on the engine block for rotation about the primary axis. A third bearing is disposed between the engine block and the power turbine shaft adjacent the power turbine whereby the power transfer end of the power turbine shaft is supported on the engine block for rotation about the primary axis.