Ceramic matrix composite component cover plate with heat transfer augmentation features and method

A ceramic matrix composite (CMC) component of a turbine engine, comprising:

• an open cooling cavity formed adjacent a wall of the CMC component to be cooled;
• a base plate dimensioned to cover the open cooling cavity of the CMC component, the base plate having a first side facing the cooling cavity;
• at least one feature plate attached to the first side of the base plate;
• and
• at least one heat transfer augmentation feature formed on the at least one feature plate and extending into the cooling cavity, wherein the at least one heat transfer augmentation feature is configured to cause turbulence in a cooling air flow within the cooling cavity.

A method for forming a cover plate for an open cooling cavity of a ceramic matrix composite (CMC) component of a turbine engine, comprising:

• forming a base plate dimensioned to cover the open cooling cavity of the CMC component, the base plate having a first side facing the cooling cavity;
• forming at least one heat transfer augmentation feature on at least one feature plate, wherein the at least one heat transfer augmentation feature is configured to cause turbulence in a cooling air flow within the cooling cavity;
• and
• attaching the at least one feature plate to the first side of the base plate with the at least one heat transfer augmentation feature configured to extend into the cooling cavity when the cover plate covers the cooling cavity.