Endwall cooling scheme

An endwall assembly, the endwall assembly disposed at one end of a vane assembly, the endwall assembly comprising:

• an endwall spar, the endwall spar including
• a cold side,
• a hot side,
• a leading edge,
• a trailing edge, and
• an axis extending from the leading edge to the trailing edge,
• perpendicular to the leading edge;
• a coversheet on the hot side of the endwall spar;
• and
• a cooling fluid channel between the hot side of the endwall spar and the coversheet, the cooling fluid channel including
• a cooling fluid inlet disposed in the endwall spar, and
• a cooling fluid outlet disposed in the leading edge of the endwall spar.

An endwall assembly, the endwall assembly disposed at one end of a vane assembly, the endwall assembly comprising:

• an endwall spar, the endwall spar including
• a cold side,
• a hot side,
• a leading edge,
• a trailing edge, and
• an axis extending from the leading edge to the trailing edge,
• perpendicular to the leading edge;
• a coversheet on the hot side of the endwall spar;
• a cooling fluid channel between the hot side of the endwall spar and the coversheet, the cooling fluid channel including
• a cooling fluid inlet disposed in the endwall spar, and
• a cooling fluid outlet disposed at the trailing edge of the endwall spar, the cooling fluid outlet disposed downstream from the cooling fluid inlet;
• a structure protruding from the cold side of the endwall spar, wherein the structure is located between the cooling fluid inlet and the cooling fluid outlet along the axis;
• and
• a cooling fluid source cavity on the cold side of the endwall spar, the cooling fluid source cavity in fluid communication with the cooling fluid channel via the cooling fluid inlet.