FIELD: aviation.
SUBSTANCE: invention relates to the field of aviation, in particular to the designs of the main rotor drives of rotorcraft. The device of main rotor jet drive consists of power plant (1), compressor (2) with a control valve of air pressure, main rotor sleeve (3), blades (4), pipelines (5), slot nozzles (6), the long side of which is located along the rear edge of the blades. The transverse axis of the slot nozzles is located at a distance of 0.7 of the radius of the rotor from the axis of rotation. The angle of gas ejection from the nozzles is αez=45° relatively to the chord of the cross-section profile of the rotor blade. The setting angle of the blade profile is within 18°<φ<25°.
EFFECT: increase in the specific thrust of the rotor, reduction in the weight and dimensions of the device are achieved.
1 cl, 2 dwg
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