Board monitoring of airplane noise levels based on engine’s thermo-gasdynamics parameters

Abstract

The offered design procedure of acoustic characteristics Turbofan allows calculation of noise of the plane with use thermo-gasdynamic parameters measured for diagnostics of engines.
This technique can be used, for example, in the on board computer for monitoring by a crew of flying noise under a trajectory of rise - landing of the plane and, if necessary, partial correction of a trajectory of the flight from conditions of maintenance of the set norms on noise in three control points. 
At ground processing of the flight information there is an opportunity to calculate isolines of the plane effective or equivalent noise levels in area of the concrete airport, even if there is no system which measures noises of planes in control points. The size of the area of a contour of equal equivalent noise level can be used at calculation of economic efficiency of those or other acoustic actions providing liberation of the area of the ground near to the airport from the emitted noise.