FIELD: mechanical engineering; engines. SUBSTANCE: stable operation of fan of double-flow turbojet engine with mixing of flows is provided by changing ratio of air flows through channels of external and internal circuits. Wall blowing out of high-velocity thin gas jet on surface of mixer shell in end area at side of external circuit channel is provided. For this purpose engine mixer has shell adjustable flaps at outlet. Shell has shaped slots in middle part of flaps in plane of cross section. Slots are provided with guide lips at side of external circuit channel. EFFECT: enlarged range of stable operation of fan. 16 cl, 6 dwg
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