FIELD: aviation; subsonic aircraft of tandem scheme. SUBSTANCE: aircraft has front lifting surface with floating wing-tip ailerons having aerodynamic center behind axis of rotation, rear lifting surface having aerodynamic center behind aircraft CG. Aircraft is constructed by tandem scheme when aircraft center with fixed floating ailerons coincides with CG or is located in front of it. Each aileron has additional aerodynamic surface brought before and behind aileron this aerodynamic surface has trimming angle relative to aileron ensuring positive lifting force with control stick in neutral position. EFFECT: enhanced reliability. 2 cl, 5 dwg
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