FIELD: aviation.
SUBSTANCE: helicopter main rotor includes a hub and blades, each comprising a spar, tail sections, a tip and an ending. The ending part of each blade in cross-section has a supersonic section and consists of a hollow housing fastened to the spar with the possibility of detaching and tail sections. The front part of the housing comprises circular holes for air intake. Receiver air intake cavities are made behind the holes, receiver cavities of boundary layer blowing are made behind the housing. Receiver cavity of boundary layer blowing is provided with the air outlet holes. Receiver cavities of air intake and receiver cavities of boundary layer blowing of each pair of diametrically disposed blades are connected via air pipelines.
EFFECT: increased main rotor thrust, speed range and altitudes by increasing rotor efficiency without additional energy input.
3 dwg
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