FIELD: aircraft engineering.
SUBSTANCE: proposed helicopter features three-rotor tier structure with two propellers in circular ducts at turning outer wings and rotor arranged there above. Gas turbine engine transmit torque via main gear and transmission shafts to push and pull screws in circular ducts. Besides its has gas jet fins of crosswise and lengthwise control. Helicopter allows conversion of three-rotor design with different-size rotors to single-rotor design with large-diameter track rotor and small-diameter push rotor and to autogiro with push and track screws. These comprise rotor and short low wing with saw-like training edge. Outer wings can turn through 0 to 100 degrees while circular channels made in wind tips can turn relative to appropriate outer wing through αw=±15°. Power plant is composed of parallel-serial hybrid power drive.
EFFECT: decreased required power consumed at track balancing in hovering, improved track and lengthwise controllability.
2 dwg
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