AIRCRAFT WING Russian patent published in 2022 - IPC B64C3/18 B64C9/08 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, in particular to structures of wings of rotary-wing aircrafts. Wing (3, 3’) has caisson (20) forming first profile (28) of the wing with front edge (29), rear edge (30), upper surface (31), and lower surface (32), first element (21, 21’) pivotally fixed on caisson (20) of the wing and forming second profile (35) of the wing, containing end wall (41) and second rear edge (43), second upper surface (45), and second lower surface (47). First element (21, 21’) is made with the possibility of movement between the first position, in which first and second profiles (35, 28) of the wing are located adjacently to each other, and the second position, in which second lower surface (47) and second upper surface (45) are respectively separated from first lower surface and first upper surface (32, 31). Caisson (20) of the wing contains first spar (26a) having a curvilinear cross-section in a plane perpendicular to corresponding first axis (E). End wall (41) is curvilinear and is located so that it is adjacent to first spar (26a) along second upper surface (31) and second lower surface (32), when first movable element (21, 21’) is in the first position.

EFFECT: minimum impact on bevel of a flow, created during operation of propellers, when a convertible aircraft is in a “helicopter” configuration.

15 cl, 9 dwg