WING AIRFOIL Russian patent published in 2016 - IPC B64C3/14 

FIELD: aviation.

SUBSTANCE: wing aerodynamic profile comprises a nose part of a circular shape with a small radius from the front edge to the joint with the bottom surface contour. 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 the nose part circle on the side of the upper surface of the profile is equal to 7-10% of the profile cord. Small radius of the circle on the side of the profile lower surface is equal to 1-2% of the profile chord.

EFFECT: invention is aimed at an increase of ascentional force at high angles of attack.

1 cl, 4 dwg