Impact of aircraft deviations from the standard trajectories in the vertical and horizontal planes on generated noise

This article analyzes the effect of changes in aircraft spatial positions on noise impact at the ground level. The research used the Ecoflight Monitoring noise monitoring system to analyze 2,005 flight trajectories and corresponding noise events related to aircraft flyovers. It also shows the effects on noise levels registered at certain positions of changes in climb and descent parameters and distribution of lateral deviations relative to the expected AIP aircraft trajectory. A comparative analysis of calculated and experimentally established parameters shows the necessity to take into account the influence of actual flight trajectories distribution on the noise environment. Modeling the noise contour confirms the need to use actual information about flight paths and profiles of aircraft collected with noise monitoring system to get the most approximate result to real conditions. The developed software system for determining and monitoring the aircraft flight corridor enables effective management and control of the noise zone in the vicinity of the airport.