Afterburner flameholder construction

Claim 1

In combination, a core engine, a bypass duct around said engine, said core engine having a first exhaust means discharging a hot exhaust, said bypass duct having a second annular exhaust means directing a cooler flow therefrom, said first and second exhaust means opening directly into an afterburner, said afterburner having an outer wall extending downstream from said bypass duct, a flameholder means in said afterburner downstream of said first and second exhaust means, said flameholder means having an annular gutter section positioned downstream of said first exhaust means in said hot exhaust, a plurality of radial gutter sections extending radially outward from said flameholder means through said hot exhaust of said first exhaust means and into said cooler flow of said second exhaust means towards said outer wall of said afterburner downstream of said second exhaust means, a plurality of said radial gutter sections having a manifold on the forward portion thereof, each manifold having an inlet opening located downstream of and in line with said first exhaust means, each manifold having outlet openings on each side of said radial gutter section and in a portion downstream of and in line with said second annular exhaust means, said manifold directing hot exhaust flow from its inlet opening to its outlet openings.