Traction air device, air device for a wind plant and wind plant for electric power production, ship provided with a traction air device

A traction air device wherein the air device comprises at least one wing which is made according to a multiple element configuration including a set of wing contours constituting multiple wing contours which are placed in a reciprocal proximity condition, said set of wing contours comprising at least one first wing contour and one second wing contour which are reciprocally placed one after the other in a reciprocal parallelism condition and spaced from each other in such a way as to leave at least one slot between a trailing edge or tail end of the first wing contour and a leading edge or head end of the second wing contour, the head end and tail end defining an advancement direction of said traction air device, the traction air device comprising at least two of said wings which are placed according to a reciprocally superimposed configuration in which a first wing is connected to a second wing by way of connection elements which keep the two wings spaced from each other, characterised in that said first wing is vertically misaligned with respect to said second wing, the connection elements having a resistant structure and being connected to the wings according to a configuration such that a longitudinal development axis of the connection elements is angled with respect to wing planes of the wings and the multiple wing contours being fixed to each other by way of a series of wing ribs which are arranged spaced from each other along the longitudinal development of the wing contours, the wing ribs keeping the wing contours together according to a reciprocally spaced configuration of one with respect to the others so that the load among the various wing contours is distributed, the wing ribs constituting a core of a spar structure with a double “T” section configuration in which the first wing contour and the third wing contour correspond to the bases of the spars and are reciprocally connected by the wing ribs.