Description: The paper deals with the formation of the vortex wake of aircraft and flight safety around airports. Actuality of research vortex wakes with the rules and recommendations of the ICAO is shown. The analysis methods for the study of vortex wakes is accomplished. Algorithms for calculating the characteristics of the vortex wake using the discrete vortex method is produced. The qualitative picture of the vortex wake behind an airplane An-74 are shown.
Keywords: aircraft, wake vortex, discrete vortex method