AIRCRAFT WING AIRFOIL (VERSIONS) Russian patent published in 2012 - IPC B64C3/14 B64C27/32 B64C11/18 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering. In compliance with first version, aircraft airfoil section comprises sharp leading and tailing edges as well as top and bottom contours. Bottom contour extends in straight line from leading edge to tailing edge. Top contour is located parallel with aircraft lengthwise axis to be connected with tailing edge smooth curve. In compliance with second version, aircraft airfoil section comprises sharp leading and trailing edges as well as top and bottom contours partially represented by parallel straight lines. Straight parts of top and bottom contours are connected by smooth curves with said leading and training edges. Top contour extends parallel with aircraft lengthwise axis. In compliance with third version, aircraft airfoil section comprises sharp leading and trailing edges as well as top and bottom contours. Top contour has straight section located parallel with aircraft lengthwise axis while bottom contour represents a curve smoothly connecting aforesaid wing edges.

EFFECT: ruled out wave resistance, higher wing lift.

3 cl, 6 dwg