GAS TURBINE ENGINE VARIABLE GEOMETRY FLOW COMPONENT

摘要

A variable geometry mechanism suitable for use in a gas turbine engine is disclosed in which movable vane segments (64,66) which are coupled to a rotatable ring, or rings (68,70), are used to change an aerodynamic property of a working fluid flowing through the gas turbine engine. The movable vane segments (64,66) can be rotated through the ring, or rings (68,70), between a first position associated with the first vane (60) and a second position associated with a second vane (62) to place the movable vane segments in proximity to one or the other of the first and second vanes of the gas turbine engine. The movable vane segments (64,66) can be used to alter, among other things, camber, exit flow area, and can be used to influence and/or accommodate such properties as incidence angle, and swirl angle.