COMPUTER SIMULATION OF AVIATION SPRAYING WHEN IMPROVING THE TECHNOLOGY OF AERIAL-CHEMICAL WORKS

Abstract

The article considers some practical issues of solving the problems of improving the technology of aerial-chemical works using methods of computer modeling of its processes, in particular, on non-traditional modes of aviation spraying. These modes are typical for the treatment of areas with obstacles at the borders, when the introduction of working fluids is carried out when the aircraft descends in the approach to the production passage over the area at the required flight altitude and climb after its end. The carried out computational and theoretical studies on the example of the An-2 biplane aircraft using the previously developed and tested multifactor software tools for modeling the processes of forming a vortex trace of an aircraft and depositing in it a spectrum of drops of working fluids characteristic of aviation spraying have shown that the use of unconventional technological treatment modes can significantly increase the productivity, safety and integral efficiency of aerialchemical works and measures for chemicalization of agricultural production in general. It is shown that to increase the efficiency of aviation spraying of areas limited by obstacles, it is technically possible and economically feasible to use a work scheme that provides for the beginning and end of processing of such areas at the stage of descent and climb at distances from obstacles corresponding to 1-2 seconds of the aircraft flight (for An-2 aircraft at distances of 50–150 m at a flight altitude of up to 20 m). Such a scheme provides an increase in the productivity of aviation spraying up to 10–15 %, a reduction in the prime cost of treatments by 3–5 % and an increase in economic efficiency by 2–3 % with an increase in their total effect by 6–8 %.