Turbine engine blade provided with an optimised cooling circuit

A turbine engine vane, comprising:

• a blade with a pressure side wall and a suction side wall that are connected upstream by a leading edge and downstream by a trailing edge;
• a cooling circuit which comprises an internal cavity extending inside the blade and a plurality of outlet orifices, each oriented along a longitudinal axis X, each outlet orifice communicating with the internal cavity and being arranged in the vicinity of the trailing edge;
• and
• a calibration device disposed within the internal cavity and provided with calibration conduits arranged opposite the outlet orifices, the calibration conduits each comprising an oblong transverse section perpendicular to the longitudinal axis,
• wherein the calibration device comprises a calibration cavity disposed downstream of the calibration conduits, the calibration cavity being in fluid communication with the calibration conduits and the outlet orifices, each calibration conduit comprising a first rectilinear portion and a second rectilinear portion which are opposite along a predetermined width L passing through the central axis A of each calibration conduit.