Patent ID: 7007479
Filing Date: 2006-03-07
Classification: F23R

Abstract:
1. A gas turbine engine comprising a combustor comprising a combustion chamber and a mixer assembly upstream from said combustion chamber for controlling emissions from said combustor, said mixer assembly comprising a pilot mixer and a main mixer, said pilot mixer comprising a pilot centerbody and a plurality of swirlers upstream and radially outward from said pilot centerbody, said main mixer radially outward from and concentrically aligned with respect to said pilot mixer, said main mixer comprising at least one swirler configured to inject fuel therethrough towards said combustion chamber, said combustor further comprises an annular centerbody extending between said pilot mixer and said main mixer, said centerbody comprising a radially inner surface, a radially outer surface, and a plurality of fuel injection ports, said radially inner surface comprising a divergent portion and a convergent portion, said plurality of fuel injection ports configured to inject fuel radially outwardly into said main mixer.