FIELD: aviation. SUBSTANCE: wing 1 have parts 20 and 21 which have effect on its lifting force; these parts may be shifted from aerodynamically non-effective position to aerodynamically effective position and vice versa. Parts 20 and 21 of wing are located in their working position on upper surface 3 and/or on lower surface 4 of wings 1; at least one part (20 or 21) is located on upper and/or lower surface of wings 1 in working position between lading edge 24 and trailing edge 23. Parts 20 of wings placed in working position increase lifting force of wings 1 and angle of attack 2. EFFECT: enhanced aerodynamic efficiency. 31 cl, 23 dwg
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