Desenvolvimento de uma Aeronave Remotamente Pilotada (RPA) para aplicação de agrotóxico

Since the demand for pesticide spraying in a total or localized manner is growing across the planet due to agriculture being on the rise, the present work aimed to develop a remotely piloted aircraft (RPA) for the application of pesticides. It was built with 5 mm extruded polystyrene and t7 styrofoam. After the construction of the RPA, a hydraulic spraying system was installed. The system was equipped with a CFACIL brand pump, Robotic model; tank with 350 mL capacity and Jacto® tips, empty cone, model JD12 P. Then, application efficiency tests were carried out, mainly to ascertain the useful range of application. An experiment was set up, under laboratory conditions, in a completely randomized design, in a factorial scheme (3X7), three flight heights (1.0; 2.0 and 3.0 m) and seven positions of hydrosensitive labels on the ground ( -1.5; -1.0; -0.5; 0.0; +0.5; +1.0 + 1.5m). The sprayer was previously checked for liquid flow of 160 mL min-1 per tip and flight speed of 20 km h-1, and the spraying was carried out at the said heights, in position 0.0, with deposition being verified in the others. points. The reference with a negative sign refers to the deposition to the left of the direction of travel and positive signs to the deposition to the right of the direction of travel. After spraying, the labels were digitized and submitted for analysis in the ImageTool 3.0 software, evaluating the results. The RPA presented a useful application range of 1 m wide when spraying with a height of 1 m. It also presented a production cost of R $ 3568.59, and, with due tests at the end, it was found that the developed system is ideal for localized applications, or small producers, since the tank capacity is limited . Another important aspect is that the system allows application in localized areas, mainly in perennial plants, in which there is difficulty in the application of pesticides.