Infrared radiation signal suppression and enhancement structure of afterburner of aero-engine

An aero-engine afterburner infrared radiation signal restraining and enhancing structure comprises an annular outer wall, an inner wall, an inner wall and an outer wall, and a plurality of mounting holes are formed in the annular outer wall; the shunting ring is arranged in the annular outer wall, an outer culvert is formed between the shunting ring and the annular outer wall, and a plurality of strip-shaped through holes distributed in the circumferential direction are formed in the side wall of the shunting ring; the inner cone is arranged in the shunting ring, an inner culvert is formed between the inner cone and the shunting ring, the inner cone is hollow, and a plurality of strip-shaped through holes distributed in the circumferential direction and a plurality of air film holes are formed in the outer wall of the inner cone; the supporting plates are supported between the shunting ring and the inner cone in the circumferential direction, are hollow and are communicated with the strip-shaped through holes