Systems, devices, and methods for: an unmanned aerial vehicle (UAV); at least one sensorless motor of the UAV, the at least one sensorless motor comprising a set of windings and a rotor; at least one propeller connected to the at least one sensorless motor; a microcontroller in communication with the at least one sensorless motor, wherein the microcontroller is configured to: determine a rotation rate of the at least one propeller; determine a rotation direction of the at least one propeller; provide an output to stop the at least one propeller if at least one of: the determined rotation rate is not a desired rotation rate and the determined rotation direction is not a desired rotation direction; and provide an output to start the at least one propeller if the at least one propeller is stopped at the desired rotation rate and the desired rotation direction.

The present invention provides a flying apparatus that can accurately measure a weight of a transported objected in a simple configuration. The flying apparatus 10 includes rotors 11, motors 12, a flight sensor 13, an electric power conversion unit 14, and a computation control unit 15. The flight sensor 13 measures physical quantities acting on a fuselage base portion 16. The computation control unit 15 generates instruction signals based on the physical quantities to cause the fuselage base portion 16 to be at a predetermined position in a predetermined attitude. The electric power conversion unit 14 adjusts amounts of electric power supplied to the motors 121 and the like based on the received instruction signals. Moreover, the computation control unit 15 calculates an estimated weight that is an estimation value of a weight of the transported object, based on magnitudes of the instruction signals.

An aerial spray rainmaking device includes a container (10), a water storage assembly (20), a pump (30) and a spraying assembly (40). The water storage assembly (20) is disposed in the container (10) and includes a water tank (21) filled with water (B). The spraying assembly (40) includes a pressure tank (41) and multiple nozzles (42) communicating with the pressure tank (41). Two ends of the pump (30) separately communicate with the water tank (21) and the pressure tank (41). The water (B) is pressured by the pressure tank (41), and is nebulized and sprayed out of the container (10) by each nozzle (42). Therefore, widespread clouds in the high sky may be quickly condensed into water droplets to accomplish the function of rainmaking.

Provided is an unmanned aerial vehicle including: a discharge port configured to discharge contents in a container; an expansion/contraction unit configured to connect the discharge port and the container and be expandable; and a discharge position control unit configured to control expansion/contraction of the expansion/contraction unit.

There is provided a holding member including: a holding unit configured to hold a package with a variable volume; and a connection unit configured to connect the holding unit and an unmanned aerial vehicle. The holding member may include a posture change unit configured to change a posture of the holding member, and a posture fixing unit for the holding unit. The holding member may include a package fixing unit configured to fix the package to the holding unit. There is provided a spraying method in which in a state in which the holding member holds the package, and the holding member holding the package is mounted on the unmanned aerial vehicle, a content of the package is sprayed from the unmanned aerial vehicle.

There is provided a holding member including: a holding unit configured to hold a package with a variable volume; and a connection unit configured to connect the holding unit and an unmanned aerial vehicle. The holding member may include a posture change unit configured to change a posture of the holding member, and a posture fixing unit for the holding unit. The holding member may include a package fixing unit configured to fix the package to the holding unit. There is provided a spraying method in which in a state in which the holding member holds the package, and the holding member holding the package is mounted on the unmanned aerial vehicle, a content of the package is sprayed from the unmanned aerial vehicle.

Disclosed are compositions comprising compounds of Formula (I) and compounds of Formula (II). Also disclosed are N compositions containing compounds of Formula (I) or compounds of Formula (II), or combinations thereof and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the disclosure.

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A coating system for applying coating liquid such as a base coat, a paint, a lacquer or a protective layer to surfaces of buildings, wind turbines, ships and aircraft. The coating system includes an unmanned aerial machine in the form of a helicopter for dispensing the coating liquid. The aerial machine has a fuselage, two rotors, a tank for holding the coating liquid, and an applicator for dispensing the coating liquid and outputting same onto a surface to be coated. In order to supply the tank with coating liquid, the tank is fastened to the aerial vehicle and the tank or aerial vehicle has a filling opening for refilling the tank in the landed state of the vehicle, and/or the tank is part of an exchangeable tank module coupled to the fuselage and/or is uncoupled from the fuselage by a coupling device controlled in an automated manner.

A coating system for applying coating liquid such as a base coat, a paint, a lacquer or a protective layer to surfaces of buildings, wind turbines, ships and aircraft. The coating system includes an unmanned aerial machine in the form of a helicopter for dispensing the coating liquid. The aerial machine has a fuselage, two rotors, a tank for holding the coating liquid, and an applicator for dispensing the coating liquid and outputting same onto a surface to be coated. In order to supply the tank with coating liquid, the tank is fastened to the aerial vehicle and the tank or aerial vehicle has a filling opening for refilling the tank in the landed state of the vehicle, and/or the tank is part of an exchangeable tank module coupled to the fuselage and/or is uncoupled from the fuselage by a coupling device controlled in an automated manner.

An unmanned aerial device having cleaning function includes a fuselage, a washing assembly and two propulsion assemblies. The washing assembly is disposed at a head of the fuselage. The propulsion assemblies are connected to two opposite sides of the fuselage. The two opposite sides are connected to the head. The propulsion assemblies each have an axial direction, and the axial direction is parallel to a direction from a bottom of the fuselage to a top of the fuselage.