AIRCRAFT WING Russian patent published in 2019 - IPC B64C3/14 

FIELD: aviation.

SUBSTANCE: invention relates to the aviation equipment. Wing of the aircraft consists of a center section, a console and the necessary functional systems, performed with an elongation of λ=7–11, a narrowing η=3–4.5 and a sweep χ=28–35° and contains supercritical profiles with increased sock radii. Front edge near the wing, when viewed from above, is made rectilinear, the rear edge is made with a bead. Profiles of the wing sections have a relative radius of the socks of the profiles assigned to the local chord, r_n≥1.0 %. Relative thickness of the profiles has a value of about 13 % in the side section and decreases to 9 % in the terminal section with a constant value in the area from 65 % of the span to the end of the wing. Wing with positive twist ε=2–2.5° in side section, end sections with negative twist ε=-2÷-3.5°, the law of the change of twist on the span has a linear descending character in the range from 20 to 100 % of the wing span.

EFFECT: invention is aimed at increasing the aerodynamic quality of the aircraft, improving fuel efficiency and reducing harmful emissions into the atmosphere.

1 cl, 6 dwg