Turbine dovetail slot heat shield

A gas turbine engine turbine blade assembly comprising:

• a hollow airfoil integrally joined to a blade root,
• a dovetail slot heat shield attached to and bonded to a bottom surface of the root, the heat shield including a body with a heat shield bottom and sides or legs extending upwardly or radially outwardly from the heat shield bottom, and
• a shield outlet from the dovetail slot heat shield open to at least one inlet aperture extending radially through a radially inner root end of the root;
• further comprising an axially extending straight flange located along a free end of each of the legs and the flanges bonded to the bottom surface.

A gas turbine engine turbine disk assembly comprising:

• a disk including a web extending radially outwardly from a hub to a rim;
• a plurality of dovetail slots in the rim;
• a complimentary plurality of turbine blades removably retained in the plurality of dovetail slots;
• slot bottoms of the dovetail slots and the dovetail slots extending circumferentially between disk posts in the rim on the disk, and
• each of the turbine blades including a hollow airfoil integrally joined to a blade root, a dovetail slot heat shield attached to a bottom surface of the root, and a shield outlet from the dovetail slot heat shield open to at least one inlet aperture extending radially through a radially inner root end of the root;
• wherein each heat shield is radially spaced from the slot bottom to create a clearance C between the heat shield and the slot bottom;
• and
• the heat shield including a body with a heat shield bottom and sides or legs extending upwardly or radially outwardly from the heat shield bottom.