Hollow ceramic matrix composite article, mandrel for forming hollow ceramic matrix composite article, and method for forming hollow ceramic matrix composite article

A ply-support mandrel for forming a hollow ceramic matrix composite article, the hollow ceramic matrix composite article, comprising:

• a ply-wrap layer defining a cavity disposed within the ply-wrap layer, the ply-wrap layer including:
• a first face;
• a second face;
• a root portion bridging the first face and the second face, the root portion defining a terminus of the ply-wrap layer including a cross-sectional conformation, the cross-sectional conformation consisting of a curve having a single turning point;
• and
• a plurality of ceramic matrix composite wrap plies, each of the plurality of ceramic matrix composite wrap plies being disposed along the first face, wrapping over the root portion, and extending along the second face, and
• a plurality of ceramic matrix composite lateral plies disposed along at least one of the first face and the second face,
• further including a plurality of ceramic matrix composite root plies aligned with the plurality of ceramic matrix composite lateral plies, each of the plurality of ceramic matrix composite root plies including a ply terminus abutting the root portion of the ply-wrap layer, wherein the ply terminus of each of the plurality of ceramic matrix composite root plies are staggered relative to the curve and to one another along the root portion;
• wherein the ply-support mandrel comprising:
• a first face support;
• a second face support;
• a root portion support bridging the first face support and the second face support, defining a mandrel terminus, the root portion support including a cross-sectional conformation, the cross-sectional conformation consisting of a curve having a single turning point.

A hollow ceramic matrix composite article, comprising:

• a ply-wrap layer defining a cavity disposed within the ply-wrap layer, the ply-wrap layer including:
• a first face;
• a second face;
• a root portion bridging the first face and the second face, the root portion defining a terminus of the ply-wrap layer including a cross-sectional conformation, the cross-sectional conformation consisting of a curve having a single turning point;
• and
• a plurality of ceramic matrix composite wrap plies, each of the plurality of ceramic matrix composite wrap plies being disposed along the first face, wrapping over the root portion, and extending along the second face;
• and
• a plurality of ceramic matrix composite lateral plies disposed along at least one of the first face and the second face,
• further including a plurality of ceramic matrix composite root plies aligned with the plurality of ceramic matrix composite lateral plies, each of the plurality of ceramic matrix composite root plies including a ply terminus abutting the root portion of the ply-wrap layer, wherein the ply terminus of each of the plurality of ceramic matrix composite root plies are staggered relative to the curve and to one another along the root portion.