Self supported inflatable tractive wing for e.g. skier, has leading edge forming curvature for semi-wings, where tangent to point situated at level of third part makes angle higher than specific degree with tangent to another point

摘要

The wing (1) has a leading edge (10) forming a curvature for semi-wings (12, 13), and a line, which divides the wing into two semi-wings, passing through a front central point (A). A tangent (T) to a point (B) is situated at the level of third party from the central point towards an end, and makes an angle (alpha) higher than 15 degree with a tangent (S) to a point (A). A supporting rigging line i.e. bearing line, is embedded in a median part of the wing, and two control lines are exteriorly integrated with the median part.