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A combustor for a gas turbine engine operates with high combustion efficiency and low carbon monoxide, nitrous oxide, and smoke emissions during low, intermediate, and high engine power operations is described. The combustor includes a mixer assembly including a pilot mixer, a main mixer, and a mid-

A combustor for a gas turbine engine operates with high combustion efficiency and low carbon monoxide, nitrous oxide, and smoke emissions during low, intermediate, and high engine power operations is described. The combustor includes a mixer assembly including a pilot mixer, a main mixer, and a mid-power and cruise mixer. The pilot mixer includes a pilot fuel injector, at least one swirler, and an air splitter. The main mixer extends circumferentially around the pilot mixer. The mid-power and cruise mixer extends between the main and pilot mixers and includes a plurality of fuel injection ports which inject fuel radially inwardly to facilitate radial and circumferential fuel-air mixing to provide a substantially uniform fuel and air distribution for combustion.

대표청구항 ▼

1. A method for operating a gas turbine engine to facilitate reducing an amount of emissions from a combustor including a mixer assembly including a pilot mixer, a main mixer, and a mid-power and cruise mixer, the pilot mixer including a pilot fuel nozzle and a plurality of axial swirlers, the main

1. A method for operating a gas turbine engine to facilitate reducing an amount of emissions from a combustor including a mixer assembly including a pilot mixer, a main mixer, and a mid-power and cruise mixer, the pilot mixer including a pilot fuel nozzle and a plurality of axial swirlers, the main mixer including a main swirler and a plurality of fuel injection ports, the mid-power and cruise mixer including a mixer and a plurality of fuel injection ports, said method comprising the steps of:injecting fuel into the combustor through the pilot mixer, such that the fuel is discharged downstream from the pilot mixer axial swirlers; directing airflow into the combustor through the main mixer such that the airflow is swirled with at least one of a conical swirler and a cyclone swirler prior to being discharged from the main mixer; and directing airflow between the pilot mixer and the main mixer through the mid-power and cruise mixer.