Patent ID: 7416382

Claim:
A variable stator of a turbomachine with a profile skeleton line extending along a meridional flow line, the stator being radially divided into at least a mid zone and two peripheral zones with a profile skeleton line for the blade mid zone remaining above a limiting line given by the following equation: α*=−3.8512520965( s *) 6 +14.6764714420( s *) 5 −21.6808727924( s *) 4 +16.3850592743( s *) 3 −6.9703863077( s *) 2 +2.4431236235( s *)−0.0060854622 where: α * = α 1 - α P α 1 - α 2 S * = S P S and P is any point of the profile skeleton line, α 1 is an angle of inclination at a stator leading edge, α 2 is an angle of inclination at a stator trailing edge, α* is a dimensionless, specific angle of a total curvature, S* is a dimensionless, specific extension, α P is an angle of a tangent at any point P of the profile skeleton line to the central meridional flow line, s P is an extension of the profile skeleton line at any point P, and S is a total extension of the profile skeleton line.