Abstract: An atomizing disc, an atomizing device with the atomizing disc, and an unmanned aerial vehicle are provided. The atomizing disc includes: a bottom disc, an upper surface of the bottom disc being provided with a liquid inlet space; and a plurality of ribs, the plurality of ribs being disposed on the upper surface of the bottom disc and being spaced apart in a circumferential direction of the bottom disc. A centrifugal flow passage in communication with the liquid inlet space is defined between two adjacent ribs and the bottom disc. An end of a rib close to an edge of the bottom disc is provided with a first groove penetrating a side portion of the rib so as to cut fluid flowing through the centrifugal flow passage.

Abstract: An operating method and device of a plant-protection unmanned aerial vehicle are provided. The operating method includes that: a plant-protection unmanned aerial vehicle starts to decelerate when flying to a first preset position (M) of a first operating route (AB), so that a flight speed of the plant-protection unmanned aerial vehicle at an operating end position (B) of the first operating route (AB) is decelerated to be zero; the plant-protection unmanned aerial vehicle flies to an operating start position (C) of a second operating route (CD) in a translational manner at a preset angular speed; and the plant-protection unmanned aerial vehicle flies along the second operating route (CD), and an operating nozzle is maintained in an open state during a flight process of the plant-protection unmanned aerial vehicle.

Abstract: An atomizing disc, an atomizing device with the atomizing disc, and an unmanned aerial vehicle are provided. The atomizing disc includes: a bottom disc, an upper surface of the bottom disc being provided with a liquid inlet space; and a plurality of ribs, the plurality of ribs being disposed on the upper surface of the bottom disc and being spaced apart in a circumferential direction of the bottom disc. A centrifugal flow passage in communication with the liquid inlet space is defined between two adjacent ribs and the bottom disc. An end of a rib close to an edge of the bottom disc is provided with a first groove penetrating a side portion of the rib so as to cut fluid flowing through the centrifugal flow passage.