Double-variable-pitch-propeller aircraft

Abstract

The invention relates to a double-variable-pitch-propeller aircraft, belonging to the technical field of aviation. The double-variable-pitch-propeller aircraft comprises a fuselage, a tail device, a left wing, a right wing, a left variable-pitch rotor wing, a right variable-pitch rotor wing and an undercarriage. An operation and control system, airborne equipment and energy equipment are equipped in the fuselage. The tail device comprises a left tail propeller, a right tail propeller and a vertical tail. The left variable-pitch rotor wing and the right variable-pitch rotor wing are the same in structure, parameter and working principle and are symmetrically arranged at the left and right sides of the fuselage, so as to supply lift and thrust to the aircraft. The right variable-pitch rotor wing comprises an engine, a main shaft, an electric brush device, a wheel hub and two or four identical propellers which are uniformly distributed around the wheel hub. A main shaft of the right variable-pitch rotor wing is in counterclockwise rotation, at the right side of the main shaft, propeller vanes forwards move at low incidence to generate an upward towing force, and at the left side of the main shaft, the propeller vanes backwards flap at high incidence to generate a forward thrust force, so that the aircraft moves forwards. The aircraft is applied to a variety of tasks, such as aerial photography, geographical mapping, agriculture-forestry-husbandry operation, military reconnaissance and emergency rescue and disaster relief.

Description

technical field [0001] The utility model relates to a dual-pitch propeller aircraft, which belongs to the technical field of aviation, and in particular relates to a dual-pitch propeller aircraft. Background technique [0002] When the two main rotor rotation planes of the traditional tandem twin-screw helicopter are in the horizontal position, they can only produce upward lift and cannot produce forward pulling force; Only upward lift can be produced and no forward pull or thrust can be produced. And when above two kinds of helicopters fly forward, the resistance suffered is bigger, and it is more difficult to implement fast cruise. The propellers of the twin-propeller fixed-wing aircraft have a larger windward area, greater resistance, and cannot vertically lift. The dual-tilt rotorcraft represented by the V-22 Osprey relies on changing the angle between the rotor rotation plane and the horizontal plane in a large range to achieve the conversion of different flight attit...

AI Technical Summary

Problems solved by technology

[0002] When the two main rotor rotation planes of the traditional tandem twin-screw helicopter are in the horizontal position, they can only produce upward lift and cannot produce forward pulling force; Can only produce upward lift and not forward pull or thrust

Moreover, the above two types of helicopters are subject to greater resistance when flying forward, and it is more difficult to implement fast cruise.

The propellers of the twin-propeller fixed-wing aircraft have a larger windward area, greater resistance, and cannot vertically lift

The dual-tilt rotorcraft represented by the V-22 Osprey relies on changing the angle between the rotor rotation plane and the horizontal plane in a large range to achieve the conversion of different flight attitudes such as vertical lift and fast cruise. Although it is relatively flexible, its structure and manipulation are very complicated and Low security and low efficiency

Images