Radially stacked fuel injection module for a segmented annular combustion system

An annular combustion system segment, comprising:

• a first integrated combustor nozzle including an inner liner segment, an outer liner segment, a pressure side wall, a suction side wall, a plurality of premixing channels defined between the pressure side wall and the suction side wall, and a downstream end portion defining a first turbine nozzle, wherein the plurality of premixing channels comprises a radially inner subset of premixing channels and a radially outer subset of premixing channels;
• a first fuel injection module extending radially upwardly from the inner liner segment towards the outer liner segment, wherein the first fuel injection module includes a bundled tube fuel nozzle portion and a first plurality of fuel injection lances, wherein each fuel injection lance of the first plurality of fuel injection lances is in fluid communication with a respective premixing channel of the radially inner subset of premixing channels;
• and
• a second fuel injection module extending radially upwardly from the first fuel injection module toward the outer liner segment, wherein the second fuel injection module includes a bundled tube fuel nozzle portion and a second plurality of fuel injection lances, wherein each fuel injection lance of the second plurality of fuel injection lances is in fluid communication with a respective premixing channel of the radially outer subset of premixing channels.