SYSTEM PROVIDING HIGH LIFT AT AIRCRAFT AIRFOIL Russian patent published in 2012 - IPC B64C9/24 

FIELD: transport.

SUBSTANCE: system providing high lift at aircraft airfoil comprises main wing (H) which has curved leading-edge (N) of main wing and wing slat (V) which is positioned on the main wing (H) with possibility to be taken back using system of levers (a, b, c) so that wing slat is able to move from retracted position (I) with elongation of airfoil towards chord and increase in its curvature and opening gap (g) which directs energy airflow from under wing slat (V) to top side of main wing (H) right up to fully deployed position (III). System of levers (a, b, c) is configured as four-link mechanism. Length and mutual layout of levers (a, b, c) and curvature of fore end (N) of main wing are mutually matched so that during the first phase of releasing movement from retracted position (I) to intermediate position (II) the rear edge (K) of wing slat (V) essentially blocks gap (g) between wing slat (V) and the main wing (H). During the next phase of releasing movement, following the intermediate position (II), the rear edge (K) of wing slat opens gap (g) more and more.

EFFECT: invention is focused on raising lifting force.

15 cl, 8 dwg