Combustor heat shield and attachment features

A combustor assembly for a gas turbine engine, comprising:

• a combustor dome defining an aperture;
• a heat shield defining an opening and including a cup extending about the opening, the cup extending toward the aperture of the combustor dome, the heat shield including a heat shield flange extending outwardly from an outer perimeter of the cup;
• and
• a collar including
• a first arm,
• a second arm, and
• a body connecting the first arm and the second arm such that the collar defines a recess between the first arm and the second arm,
• wherein the heat shield flange is positioned within the recess,
• wherein the heat shield flange includes a projection extending toward the collar, and
• wherein the collar defines a slot for receipt of the projection.

A combustor assembly for a gas turbine engine, comprising:

• a combustor dome defining an aperture;
• a heat shield defining an opening and including a cup extending about the opening, the cup extending toward the aperture of the combustor dome, the heat shield including a heat shield flange extending outwardly from an outer perimeter of the cup;
• an attachment piece defining an opening therethrough, the attachment piece including an attachment flange extending outwardly from an outer perimeter of the attachment piece;
• and
• a collar surrounding the heat shield flange and the attachment flange to couple the heat shield and the attachment piece,
• wherein the attachment piece attaches to the combustor dome to couple the heat shield and the combustor dome,
• wherein the heat shield flange includes a projection extending toward the collar, and
• wherein the collar defines a slot for receipt of the projection.