An aft section structure of a jet engine has an axis and the aft section structure is comprised of a casing defining a duct around the axis and opened axially fore and aft; a cone tapering aftward at a first angle with the axis and having a pointed end; one or more guide vanes, each of the vanes radially extending from the cone to the casing and comprising a pressure side at a second angle with a plane containing the axis; one or more spray bars, each of the spray bars extending radially within the duct and comprising one or more trailing sides, each of the trailing sides being directed aftward at a third angle with a plane containing the axis; and one or more flame holders, each of the flame holders extending radially within the duct and comprising one or more interior sides, each of the interior sides being directed aftward at a fourth angle with a plane containing the axis.