Patent ID: 7118331
Filing Date: 2006-10-10
Classification: F01D,F04D

Abstract:
1. A stator vane assembly for a turbomachine comprising a plurality of circumferentially arranged stator vanes, the turbomachine comprising a rotor arranged within a duct defined at least partially by a casing, the rotor comprises a plurality of rotor blades, at least one structure extending across the duct, the stator vanes being arranged between the structure and the rotor blades, the pitch angle circumferentially between adjacent stator vanes being varied circumferentially around the stator vane assembly wherein the stator vanes are arranged with three or more different pitch angles between adjacent stator vanes and the pitch angles between adjacent stator vanes progressively changes circumferentially around the stator vane assembly from a maximum pitch angle between adjacent stator vanes to a minimum pitch angle between adjacent stator vanes wherein the stator vanes are arranged with a plurality of maximum pitch angles between adjacent stator vanes and a plurality of minimum pitch angles between adjacent stator vanes.