Gas turbine engine with variable vanes

摘要

Gas turbine engine systems involving gear-driven variable vanes are provided. In this regard, a representative gas turbine engine system includes: a ring gear assembly (130) operative to be mounted within an engine casing; and a vane module (120) having a first vane airfoil and a first gear (146), the first gear being operative to engage the ring gear assembly (130) such that movement of the ring gear (130) alters a position of the first vane airfoil.