Twin-rotor duct system

Abstract

The invention relates to the technical field of ducted rotor unmanned aerial vehicles, in particular to a twin-rotor duct system. The twin-rotor duct system comprises a first rotor mechanism, a secondrotor mechanism, a duct and a plurality of electromagnetic coils, wherein all the electromagnetic coils are arranged in the duct. The first rotor mechanism comprises a first rigid permanent magnet ring and first rotors, and the second rotor mechanism comprises a second rigid permanent magnet ring and second rotors. The electromagnetic coils generate a coupling magnetic field after the electromagnetic coils communicating with alternating current, under the action of the magnetic field, the first rotor mechanism rotates on a first circular guide rail, the second rotor mechanism rotates on a second circular guide rail, and the rotation directions of the first rotor mechanism and the second rotor mechanism are opposite to each other; and meanwhile, the first rotors and the second rotors are connected together through a connecting rotating shaft, so that the first rotors and the second rotors rotate reversely at a same speed around the connecting rotating shaft, the torque of the first rotors and the second rotors can be effectively eliminated, the attitude control of an unmanned aerial vehicle is more convenient to realize, and the use effect is improved.

Description

technical field [0001] The invention relates to the technical field of ducted rotor UAVs, in particular to a dual-rotor ducted system. Background technique [0002] The ducted rotor drone is a device with a high lift-to-drag ratio. The built-in blade structure is used as the rotor structure to protect the rotor mechanism from the impact of external objects or airflow impacts, improving the safety and resistance of the drone. Interference ability. The power supply mechanism of the ducted rotor UAV is a rotor structure, and the rotor structure is mostly a double rotor. The double rotor structure is set inside the duct, and the double rotors are set parallel to each other, which can realize vertical take-off and landing and hovering, offsetting each other. The torque action does not require a special take-off and landing site, and it is also convenient to realize the control of the UAV's aerial attitude. At present, the dual-rotor duct system has the following two main disadv...

AI Technical Summary

Problems solved by technology

At present, the dual-rotor duct system has the following two main disadvantages. One is that its power motor is placed between the first rotor mechanism and the second rotor mechanism, which makes the turbulence inside the duct more serious and the aerodynamic resistance is greater; There is a certain gap between the tip of the first rotor and the second rotor and the inner wall of the duct, which has a great impact on the ducted fan mechanism. There is a large pressure difference on both sides of the gap between the tip of the rotor and the inner wall of the duct, causing Axial air leakage, the work formed by this part of the airflow is wasted, resulting in leakage loss. At the same time, the wingtip turbulence will also increase the wall loss and eddy current loss inside the duct, resulting in an increase in internal flow loss.

The above two shortcomings lead to poor aerodynamic layout structure of the dual-rotor duct system, which affects the control of the UAV, and the use effect is poor

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