FIELD: transport.
SUBSTANCE: invention relates to production of helicopters. Airscrew consists of cone, blades, holders, splined shaft and blade unfolding mechanism. Said cone represents rounded cone with through cutouts on sides to accommodate automatically unfolding blades. Blade roots are arranged in rotary holders fitted in through round holes made at cone cutout start. Holders are actuated by control bush fitted on splined shaft inside said cone. Driven by spring, said control bush moves along splined shaft to lift the blade, to turn it jointly with holder and to lock in preset working position.
EFFECT: higher reliability of airscrew blade locking.
7 dwg
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