DEVICE FOR REDUCING HEAT SIGNATURE OF MILITARY MACHINE Russian patent published in 2013 - IPC F41H3/00 

FIELD: weapons and ammunition.

SUBSTANCE: device for reducing heat signature of the military machine comprises a pipe welded obliquely to the flange for discharge of exhaust gases of the military machine engine, on which by means of step-wise racks the lower, middle and upper with a curved guide element heat-protective flaps are mounted, and each heat-protective flap is tilted to the side of cut of the outlet pipe section for forming the ejection flow of atmospheric air, and the tilt angle of each successive heat-protective flap is greater than the previous one by an amount of 1-5°, each step-wise rack is made in the form of separate steps shifted from each other by a certain distance in the plane of the corresponding heat-protective flap to reduce heat transfer of the exhaust gases from the pipe to the upper heat-protective flap, and the guide element of the upper heat-protective flap is curved so that one its part is tilted at an angle of 25° to 30° to the cut of the outlet section of the pipe to provide the capture of atmospheric air by the kinetic energy of the exhaust gases flow, and the other part is smoothly rotated in the direction opposite the cut of the outlet section of the pipe to provide reduction of likelihood of appearance of turbulence zone in the ejection flow of atmospheric air and is tangent to the plane which is a continuation of the upper outer surface of the pipe.

EFFECT: reduction of heat signature of military vehicles with the operating engine.

1 cl, 3 dwg