Multiple annular combustion chamber swirler having atomizing pilot

A mixer assembly for use in a combustion chamber of a gas turbine engine, said assembly comprising;

• a pilot mixer including an annular pilot housing having a hollow interior, a pilot fuel nozzle mounted in the housing and adapted for dispensing droplets of fuel to the hollow interior of the pilot housing, and a plurality of concentrically mounted axial swirlers positioned upstream from the pilot fuel nozzle, each of said plurality of swirlers having a plurality of vanes for swirling air traveling through the respective swirler to mix air and the droplets of fuel dispensed by the pilot nozzle;
• a main mixer including a main housing, surrounding the pilot housing and defining an annular cavity, a plurality of fuel injection ports for introducing fuel into the cavity, and a swirler positioned upstream from the plurality of fuel injection ports having a plurality of vanes for swirling air traveling through the swirler to mix air and the droplets of fuel dispensed by the fuel injection ports;
• and
• a fuel manifold positioned between the pilot mixer and the main mixer, said plurality of fuel injection ports for introducing fuel into the main mixer cavity being positioned on an exterior surface of the fuel manifold.