Patent ID: 7198454

Claim:
A variable stator vane arrangement for an axial flow compressor comprising a compressor casing, a plurality of variable stator vanes, a control ring, a plurality of operating levers and a plurality of circumferentially extending strips, the variable stator vanes being circumferentially spaced apart and extending radially, each variable stator vane being rotatably mounted on the compressor casing, the control ring surrounding the compressor casing, each variable stator vane being connected to the control ring by a respective one of the plurality of operating levers, the control ring being spaced from the compressor casing by a clearance, the circumferentially extending strips being arranged circumferentially and being positioned radially between the control ring and the compressor casing, the strips controlling the clearance between the control ring and the compressor casing whereby any error of the variable stator vane angular position is reduced wherein said strips are bimetallic strips.