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An annular combustor includes a plurality of circumferentially spaced, radially extending dilution poles disposed in an intermediate zone thereof between a forward combustion zone and an aft combustion zone. Adjacent ones of the dilution poles define therebetween a throat for receiving the combustio

An annular combustor includes a plurality of circumferentially spaced, radially extending dilution poles disposed in an intermediate zone thereof between a forward combustion zone and an aft combustion zone. Adjacent ones of the dilution poles define therebetween a throat for receiving the combustion gases from the forward zone. The dilution poles include circumferentially facing dilution holes for injecting dilution air into the throats for mixing with the combustion gases being channeled therethrough. The dilution poles are effective for blocking the combustion gases at a plurality of circumferentially spaced apart locations and accelerating the combustion gases through the throats for reducing residence time in the throat. The dilution air is injected through the dilution holes for improved penetration into the combustion gases in the throats for mixing therewith to form lean combustion gases which undergo final combustion in the aft zone for reducing NOx emissions.

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In a gas turbine engine annular combustor having a longitudinal centerline axis, outer and inner annular liners spaced radially apart coaxially about said centerline axis to define an annular combustion chamber therebetween, an annular dome at upstream ends of said liners having a plurality of circu

In a gas turbine engine annular combustor having a longitudinal centerline axis, outer and inner annular liners spaced radially apart coaxially about said centerline axis to define an annular combustion chamber therebetween, an annular dome at upstream ends of said liners having a plurality of circumferentially spaced apart carburetors for providing a fuel/air mixture into said combustion chamber to generate combustion gases therein, and an annular outlet defined at downstream ends of said liners for discharging said combustion gases, a method comprising: channeling said fuel/air mixture axially through said dome into said combustion chamber to generate said combustion gases; blocking flow of said combustion gases at a plurality of circumferentially spaced apart locations at an axial position spaced axially downstream from said dome and spaced axially upstream from said outlet to define an intermediate zone disposed axially between a forward zone extending upstream therefrom to said dome, and an aft zone extending downstream therefrom to said outlet, and radially between said outer and inner liners to accelerate said combustion gases between said blocking locations in a plurality of circumferentially spaced apart throats; injecting dilution air into said combustion gases being channeled through said throats and radially between said outer and inner liners channeling said combustion gased through said forward zone with a rich equivalence ratio; and wherein said injecting step mixes said dilution air with said combustion gases being channeled through said throats to quench said combustion gases channeled to said aft zone to a lean equivalence ratio.