[Problem] To provide a chemical spray drone (an unmanned aerial vehicle) which minimizes unwanted chemical spraying outside of the agricultural field. [Solution] Downward air currents of the rotor areactively used to minimize spraying of chemicals outside of the target location. A two-stage rotor which rotates in mutually opposite directions may optionally be used. Furthermore, the chemical discharge amount, flight speed, altitude and nozzle position are adjusted depending on change in parameters such as rotor speed, the total weight of the aircraft, etc. It is preferable to stop chemical spraying when the speed difference between the upper and lower rotors of the two-stage rotor has exceeded a prescribed value. Additionally, it is preferable to adopt a propeller guide having a shape thatcan reduce air resistance of the downwards air flow.
提供使向农场外的不期望的药剂飞散最小化的药剂播撒用无人机(无人飞行器)。积极地利用转子的下降气流来使目标场所以外的药剂的飞散最小化。可以灵活应用朝彼此相反的方向旋转的双级转子。进而,根据转子的旋转速度、机体总重量等参数的变化,来调整药剂喷出量、飞行速度、高度、喷嘴位置。优选在双级转子的上下的转子的转速之差超过给定值的情况下,中止药剂播撒。此外,优选采用具有能降低下降气流的空气阻力的形状的螺旋桨防护件。
Chemical spray drone
药剂播撒用无人机
2020-09-18
Patent
Electronic Resource
Chinese