Pitch-setting device for a variable stator vane

A device for setting a variable stator vane for an aircraft turbomachine, said setting device comprising:

• a pivotable stator vane comprising:
• a stator vane base and
• a vane blade extending along a first direction between the base and a tip, said blade being delimited in a second direction by a leading edge and a trailing edge
• a vane pivot shaft rotatably integral with the vane, having an axis of rotation extending along the first direction and
• a fin extending along a direction parallel to the first direction and being delimited along a third direction by a fin leading edge and a fin trailing edge;
• a port located in the stator vane base
• a portion of the fin comprising a part housed in the port
• a control means rotatably driving the vane pivot shaft between a first angular position and a second angular position and displacing the portion of the fin between a first position corresponding to the first angular position and a second position corresponding to the second angular position;
• so that a variation of a ratio of a length C to a length D is less than 10%, D being the projected value of the distance between the leading edge of the blade and the leading edge of the fin along a projection direction (X) normal to the first direction, C being the projected value along the projection direction of the distance between the leading edge of the blade and the trailing edge of the blade.