Gas turbine engine combustor with a set of dilution passages

A combustor for a gas turbine engine, the combustor defining a combustor centerline and comprising:

• a dome wall;
• an annular liner extending from the dome wall;
• a combustion chamber at least partially defined by the dome wall and the annular liner;
• a fuel cup provided along the dome wall relative to the combustor centerline, the fuel cup having a fuel cup centerline and a fuel cup outlet opening to the combustion chamber;
• and
• a set of dilution passages, with each dilution passage of the set of dilution passages opening into the combustion chamber through at least one respective slot of a plurality of slots provided along the dome wall, each dilution passage of the set of dilution passages having a passage centerline, wherein each slot of the plurality of slots includes a center point defined by a location along the respective slot where the passage centerline of the respective dilution passage of the set of dilution passages that opens into the combustion chamber at the respective slot intersects the respective slot, with the respective center point of each slot of the plurality of slots forming a plurality of center points, the plurality of center points being located on a polar coordinate system having:
• a fuel cup reference line extending through the fuel cup centerline and defining a 0 degree to 180 degree reference line, with 0 degrees being radially closest to the combustor centerline;
• a transverse reference line defining a 90 degree to 270 degree reference line;
• and
• four quadrants split by the fuel cup reference line and the transverse reference line, the four quadrants including a first quadrant adjacent a second quadrant;
• wherein:
• the plurality of slots includes a radially inner set of slots defined as a subset of slots of the plurality of slots without additional slots of the plurality of slots provided radially between the radially inner set of slots and the fuel cup, wherein every slot in the radially inner set of slots does not have an intervening slot located radially between the respective slot and the fuel cup;
• a first subset of slots of the radially inner set of slots, the respective center point of each slot of the first subset of slots provided on a first line, the first subset of slots including:
• a first set of three slots of the plurality of slots distributed along a first linear leg of the first line, wherein the first set of three slots of the first subset of slots is located in the first quadrant and the second quadrant;
• a second set of three slots of the plurality of slots distributed along a second curved leg of the first line that extends from a first end of the first linear leg of the first line, wherein the second set of three slots of the first subset of slots is located in the first quadrant;
• and
• a third set of three slots of the plurality of slots distributed along a third linear leg of the first line that extends from a second end of the first linear leg of the first line, wherein the third set of three slots of the first subset of slots is located in the second quadrant;
• the first line extending circumferentially about a portion of the fuel cup with respect to the fuel cup centerline.