FIELD: transport.
SUBSTANCE: system providing high lift for aircraft with main wing and wing slat contains device for positioning wing slat in various states. Between wing slat rear side (1b) facing main wing and main wing (2), slot (5) forms the size of which results from repositionable state of wing slat (1) relative to main wing (2). Inside the wing slat, air duct (11) with air duct inlet (20) and one air duct outlet. Air duct inlet (20) is located on rear side (1b) facing the main wing to act on air flow through slots (5).
EFFECT: invention is focused on flow noise attenuation.
25 cl, 2 dwg
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