FIELD: aeronautics.
SUBSTANCE: invention relates to the field of aeronautics, in particular to the designs of blade propellers. The propeller includes a central sleeve having an axis of symmetry and made with the possibility of its attachment to the drive shaft of the power plant. The central sleeve includes at least two beams. Blades are cantilevered on each beam at an equal distance from the central hub and are attached to the beams at the attachment points along the geometric middle of the blade depth. Each blade has a helical segment extending in the direction along the hub axis with a clockwise deviation relative to this axis. In this case, each helical segment contains at least three stiffening ribs fixed on the surface of the helical segment.
EFFECT: increased force of the air flow, uniform load distribution and reduced material consumption.
4 cl, 4 dwg
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