FIELD: aircraft engineering. SUBSTANCE: aircraft has rigid wings which, in turn, have rows of fins, and guide 1 with fastened tubes holding wing fins 12, the guide is fastened to fuselage 2. A synchronous rotation mechanism of the tubes with fins 12 is connected to guide 1 and the holding tubes of fins 12. Each fin 12 is made in the form of a circular cross section rod with cantilever beams connected to it, the axes of the beams lie in one surface. Wing guide 1 is pivotally connected with holding tubes of fins 12 and has parallel planes on which holding tubes slide together with fitted fins 12 when rotated. The synchronous rotation mechanism is made for rotation the holding tubes either at an approximately equal angle or at different approximately proportional angles. The mechanism has single-type parallel members each of which is freely fitted by one end on the axis of rotation of the holding tube, and the other end is pivotally connected to a plate. When the plate moves in parallel the necessary angular position of the parallel members may be set. The angular position of the holding tube relative to a member pivotally connected to is related to angular position of an adjusting ring with which the member and the tube are connected by a flexible link and which is pivotally connected to the plate. The rod of each fin 12 is fitted on the holding tube for rotation around this tube, all the rods of fins 12 of one wing are connected by a cable to a drive shaft for providing synchronous equal rotation of fins 12 around the tubes. A stop is fastened to the shaft and provides its positional locking. EFFECT: reduced wing weight and improved control and wing folding. 4 cl, 12 dwg
