FIELD: aeronautics.
SUBSTANCE: invention relates to the field of aeronautics, namely to propellers with blades for various types of propulsion and aircraft, devices, devices for creating air flow pressure. The air screw includes a central sleeve having an axis of symmetry and made with the possibility of its fastening to the drive shaft of the power plant. The central sleeve includes at least two beams, on each beam, at an equal distance from the central sleeve, the blades are cantilevered, each of which has a helical segment passing in the direction along and with a clockwise deviation relative to the axis of symmetry of the central sleeve. Wherein each helical segment contains at least three stiffening ribs fixed on the surface of the helical segment, in accordance with its generatrix surfaces.
EFFECT: increasing the force of the air flow of the screw with its compact width and reduced material consumption.
5 cl, 4 dwg, 2 ex
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