Blade comprising a trailing edge having three distinct cooling regions

A vane of a turbomachine turbine, the vane comprising:

• a root carrying a blade extending along a span direction ending in an apex, the blade comprising a leading edge and a trailing edge located downstream of the leading edge, the blade comprising a pressure face wall and a suction face wall each connecting the leading edge to the trailing edge, the trailing edge including on the pressure face side, a series of through slots configured to be supplied with cooling air,
• wherein the slots include:
• one or more first slots which are closest to the root and which are supplied distinctly and independently by a lower cavity of the vane;
• one or more last slots which are closest to the apex and which are supplied distinctly and independently by an upper cavity of the vane;
• and
• intermediate slots located between the first slots and the last slots and which are supplied distinctly and independently by an intermediate cavity of the blade;
• the lower cavity being closest to the root, the upper cavity being closest to the apex, and the intermediate cavity being arranged between the lower cavity and the upper cavity,
• wherein the lower cavity, the upper cavity and the intermediate cavity are distinctly supplied with air at the root of the vane;
• and
• wherein the vane comprises an intermediate duct for supplying the intermediate cavity with air, the intermediate duct being connected to the intermediate cavity by a series of holes to provide calibrated supply to the intermediate cavity,
• the vane further comprising a central duct and a pressure face side cavity located between the central duct and the pressure face wall of the blade to form a heat screen protecting the central duct, and
• the vane further comprising a suction face side cavity located between the central duct and the suction face wall of the blade to form a heat screen protecting the central duct.