Aviation noise – modelling basics

A sustainable approach to aircraft noise requires not only design changes to engines and aircraft, but also improved methods for modelling noise and its propagation through the air. The article continues the authors' holistic view of the problem of aircraft noise, also taking into account data from military aviation. First, the social and health problem of aircraft noise is recalled. Then the theoretical basis in acoustics and modern aviation noise modelling tools are presented, as well as selected research projects carried out in Sweden to assist in the reduction of aircraft noise. In the results of the study, an addendum to the mathematical description of airborne noise propagation and examples are presented. In conclusion, the authors' insights from their research are indicated.