Hybrid ceramic structure with internal cooling arrangements

A hybrid ceramic structure comprising:

• an inner ceramic matrix composite (CMC) member, at least a portion of which comprises waves defining a first wavy surface and an opposed second wavy surface;
• a thermal insulation member bonded with the first wavy surface, and comprising a distal surface;
• an outer CMC member joined to a portion of the inner CMC member, the inner CMC and the outer CMC members comprising spaced apart regions that define at least one pocket therebetween;
• a core material disposed in at least a portion of said pocket, wherein the core material comprises a material different than a matrix material and/or the material of the fibers of the inner CMC member, wherein a coefficient of thermal conductivity of the core material is higher relative to a coefficient of thermal conductivity of the inner CMC material;
• and
• a cooling channel disposed in the core material.

A tubular structure comprising:

• an inner ceramic matrix composite (CMC) material, at least a portion of which comprises waves, the waves defining a first wavy surface and an opposed second wavy surface;
• a ceramic insulation material bonded with the first wavy surface and comprising a distal surface for exposure to a high temperature environment;
• a core material bonded with at least a portion of the second wavy surface, wherein a coefficient of thermal conductivity of the core material is higher relative to a coefficient of thermal conductivity of the inner CMC material;
• a cooling channel disposed in the core material;
• and
• an outer CMC member joined to a portion of the inner CMC material, wherein the core material comprises a material different than a matrix material and/or the material of the fibers of the inner CMC material, and further wherein the tubular structure includes a thermal insulation layer, which defines at least a central passageway therein, the distal surface of the thermal insulation layer having a non-wavy surface for the passage of a hot gas through the passageway.

A structure comprising:

• an inner ceramic matrix composite (CMC) material, at least a portion of which comprises waves, the waves defining a first wavy surface and an opposed second wavy surface;
• a core material bonded with at least a portion of the second wavy surface;
• a cooling channel disposed in the core material;
• and
• an outer CMC material joined to a portion of the inner CMC material, wherein the core material comprises a material different than a matrix material and/or the material of the fibers of the inner CMC material, wherein the fibers of the inner CMC material comprise a plurality of continuous fibers extending parallel to the first and second wavy surfaces.