AERODYNAMIC WING PROFILE Russian patent published in 2019 - IPC B64C3/14 

FIELD: aviation.

SUBSTANCE: invention relates to the aviation equipment. Aerodynamic profile of wing includes nose part of circular shape of small radius from front edge to conjugation with contour of lower surface. Nose part of the wing profile from the front edge of the profile to the joint with the upper surface contour is made in the form of a circle with a larger radius, connected to a circle with a smaller radius with a common tangent on the profile leading edge. Large radius of nose circle on side of upper surface of profile is made equal to 5–7 % of chord profile. Small radius of circle on side of lower surface of profile is made equal to 0.5 % of profile chord.

EFFECT: invention is aimed at increasing the wing profile lift coefficient at landing speeds and reducing the resistance value in the operational mode of attack angles.

1 cl, 4 dwg