TURBOFAN ENGINE INCLUDING A FAN ACTUATION SYSTEM

Abstract: a turbofan engine includes a fan and a fan actuation system. the fan has a plurality of fan blades. each of the plurality of fan blades is rotatable about a pitch axis. the fan actuation system includes one or more actuators for rotating the plurality of fan blades about the pitch axis and one or more thrust bearings. the fan actuation system is characterized by a fan actuation system envelope in a range of 300 to 1860. the fan actuation system envelope is given by

Inventor(s): Randy M. Vondrell, Keith A. Miedema

CPC Classification: F01D7/02 (NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids ; non-positive displacement pumps ))

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