Combustor resonator section with an internal thermal barrier coating and method of fabricating the same

A combustor for a gas turbine engine, comprising:

• a circumferentially extending liner defining at least a portion of an interior combustion chamber;
• a resonator section of the liner comprising at least one resonator on the liner including a resonator chamber formed on an exterior of the liner;
• and
• a thermal barrier coating disposed along an inner surface of the liner including an inner surface of the resonator section;
• wherein the resonator further comprises a plurality of apertures and each aperture extends through the liner at the resonator section and through the thermal barrier coating and there being fluid flow communication between the combustion chamber and the resonator chamber.

A method of fabricating and assembling a combustor for a gas turbine engine, the combustor having a resonator section including a liner defining at least a portion of a combustion chamber and having a plurality of resonators disposed circumferentially on an outer surface of the liner, the method comprising:

• forming a circumferentially extending liner section from a generally rectangular metal plate and the liner section having an inner surface and an outer surface;
• machining the outer surface of the liner section to form a plurality of spaced apart outwardly projecting and enclosed sidewalls, which are integrally formed with the liner section;
• applying a thermal barrier coating to the inner surface of the liner section;
• and,
• forming a plurality of apertures through the thermal barrier coating and the liner section within each area of the liner section defined by each enclosed sidewall.

A combustor for a gas turbine engine, comprising:

• a circumferentially extending liner defining at least a portion of an interior combustion chamber and a hot gas path;
• a resonator section of the liner comprising at least one resonator on the liner including one or more outwardly projecting sidewalls on an exterior surface of the liner and an end cap affixed to the sidewalls forming a resonator chamber on an exterior of the liner;
• and
• the resonator further comprises a plurality of apertures in the liner within an area defined by the sidewalls allowing fluid flow communication between the combustion chamber and the resonator chamber;
• wherein the liner has a thickness within the area defined by the sidewalls that is less than a thickness of the liner outside the area defined by the sidewalls.