FIELD: flying vehicle engines at afterburning of generator gas in thrust chamber. SUBSTANCE: nozzle includes cowling widening towards exit; thus cowling has variable contour with initial taper section whose aperture angle exceeds angle at nozzle exit and central body movably mounted along axis of cowling; they form supersonic channel of variable throat section located on above-mentioned taper section perpendicularly relative to it. At the beginning of supersonic channel, contour of central body is equidistant relative to above-mentioned section of cowling and distance between these members of nozzle is equal to height of throat section. EFFECT: enhanced efficiency of nozzle. 3 cl, 3 dwg
