CMC combustor panel attachment arrangement

A combustor assembly, comprising:

• an outer panel assembly including:
• a first liner panel having a first inner surface, a first forward end, and a first aft end, the first aft end angled between 30° and 60° with respect to the first inner surface,
• a second liner panel having a second inner surface, a second forward end, and a second aft end, the second forward end angled between 30° and 60° with respect to the second inner surface, and
• an outer support band having a plurality of outer holes spaced circumferentially about an axis, the outer support band arranged between the first liner panel and the second liner panel and in engagement with the first aft end and the second forward end;
• an inner panel assembly comprising:
• a third liner panel having a third inner surface, a third forward end, and a third aft end, the third aft end angled between 30° and 60° with respect to the third inner surface,
• a fourth liner panel having a fourth inner surface, a fourth forward end and a fourth aft end, the fourth forward end angled between 30° and 60° with respect to the fourth inner surface, and
• an inner support band having a plurality of inner holes spaced circumferentially about the axis, the inner support band arranged between the third liner panel and the fourth liner panel and in engagement with the third aft end and the fourth forward end;
• and
• wherein a combustion chamber is defined between the outer panel assembly and the inner panel assembly, and
• wherein:
• the first aft end of the first liner panel includes a first plurality of grooves spaced circumferentially about the axis;
• the second forward end of the second liner panel includes a second plurality of grooves spaced circumferentially about the axis;
• the outer support band has a protrusion with a first angled surface and a second angled surface, the first angled surface including a first plurality of portions that are spaced circumferentially about the axis and each of the first plurality of portions partially surrounds a first axial side of and includes a partially conical shape defined about one of the plurality of outer holes, and the second angled surface including a second plurality of portions that are spaced circumferentially about the axis and each of the second plurality of portions partially surrounds a second axial side of and includes a partially conical shape defined about the one of the plurality of outer holes;
• and the first aft end abuts the first angled surface such that the first plurality of portions engage with the first plurality of grooves, and the second forward end abuts the second angled surface such that the second plurality of portions engage with the second plurality of grooves.

A gas turbine engine, comprising:

• a compressor section;
• a turbine section;
• a combustor section including a liner assembly defining a combustion chamber, the liner assembly comprising:
• a first liner panel having a first forward end and a first aft end, the first aft end including a first plurality of grooves spaced circumferentially about an axis;
• a second liner panel having a second forward end and a second aft end, the second forward end including a second plurality of grooves spaced circumferentially about the axis;
• a support band arranged between the first liner panel and the second liner panel, the support band including:
• a platform having a plurality of holes spaced circumferentially about the axis, and
• a protrusion extending radially relative to the axis from the platform and including a first angled surface and a second angled surface, the first angled surface including a first plurality of portions that are spaced circumferentially about the axis and each of the first plurality of portions partially surrounds a first axial side of and includes a partially conical shape defined about one of the plurality of holes, and the second angled surface including a second plurality of portions that are spaced circumferentially about the axis and each of the second plurality of portions partially surrounds a second axial side of and includes a partially conical shape defined about the one of the plurality of holes;
• and
• wherein the first aft end abuts the first angled surface such that the first plurality of portions engage with the first plurality of grooves, and the second forward end abuts the second angled surface such that the second plurality of portions engage with the second plurality of grooves.