AIRCRAFT WING Russian patent published in 2019 - IPC B64C3/10 

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, completed with lengthening λ =7–11, narrowing η = 2–4.5 and sweep χ = 15–25° and contains supercritical profiles. Front edge of the wing, when viewed from above, is straight in one area, and swept one in another. Rear edge is straight. Relative thickness of the profiles has a value of about 14.5 % in the side section and decreases to 9.5 % in the terminal section with a constant value in the area from 0.65 wing span to end thereof. Wing is designed with a positive twist. ε = 1–1.15° in side section, end sections are designed with a negative twist ε = -1÷2°. Pattern of change of spanwise twist has a linear descending character in the range from 0.2 to 1 wing span.

EFFECT: invention is aimed at reducing noise on the ground.

1 cl, 5 dwg