Abstract: A combustor for burning heavy residual fuel to drive a gas turbine engine has an elongated, imperforate vaporizing tube with an air blast nozzle at one end of the tube adjacent a cannister type preheater means arranged to swirl air blasted residual fuel in the tube to produce vaporization while preventing autoignition and wherein the vaporized fuel is processed through a primary crossed slot air mixer means for reducing the temperature of the air/fuel mixture passing from the vaporizing tube and to establish an equivalence ratio in the air/fuel mixture at a lean reaction zone combustion chamber for burning a lean air/fuel mixture from the primary air mixer means under controlled conditions and wherein a combustor torch igniter directs an igniting flame into the lean air/fuel mixture directed from the air mixer means so as to assure continuous combustion in the lean combustion zone so as to reduce hydrocarbon and carbon monoxide emissions from the combustion apparatus under varying conditions of gas turbine en

Abstract: A short length afterburner assembly for a jet propulsion engine having a fan bypass includes cold and hot air cross-over passages and a plurality of flame stabilization swirler vanes associated with a balanced load controller for positioning the vanes parallel to hot gas stream flow from a jet engine core when the afterburner is off and in an inclined position to such gas stream flow when fuel is injected therein during afterburner operation thereby to produce flame spread within the afterburner core by a combination of translatory and swirling motions; and wherein atomized fuel for afterburner combustion is injected into hot gases ducted through hot air cross-over passages from the jet engine core to produce premix and prevaporization of fuel upstream of fixed flameholders and wherein cold fan bypass air cross-over passages have movable turbulator grids positioned during afterburner operation for mixing cold air flow with the bypassed hot core gas at the fixed flameholders during afterburner operation and wh