Land-air dual-purpose plant protection unmanned aerial vehicle and control method thereof

The invention discloses an air-ground dual-purpose plant protection unmanned aerial vehicle and a control method thereof, belongs to the technical field of unmanned aerial vehicles, and aims to solve the technical problems that a rudder ducted fan adjusts the airflow direction through blade grids, the blade grids can hinder passing airflow to form resistance to influence the power of the fan, and noise is also formed when the airflow impacts the blade grids. A supporting arm and a rotor wheel installed at the end of the supporting arm are installed outside the aircraft body in a hinged mode, a duct is formed in the aircraft body, a rotating cylinder is arranged in the duct, a deflectable cambered surface rotating ring is rotatably installed in the rotating cylinder, deflection of the cambered surface rotating ring is controlled through a deflection motor, and a driving rotor is installed in the cambered surface rotating ring. Flight is controlled through the driving rotor wings in the ducts ...