AzB and ECAC Doc.29—Two best-practice European aircraft noise prediction models

The European Environmental Noise Directive END requires harmonized prediction methods for the major environmental noise sources. Currently two potential candidates are discussed for the modelling of aircraft noise: the 3rd edition of ECAC Doc.29 was published in 2005 describing a recommended method for the prediction of aircraft noise around civil airports. The German AzB model published in 2008 was developed as a tool for the enforcement of the revised German Act for Protection against Aircraft Noise that came into force in 2007. This paper gives a comparative overview on both methods, the underlying acoustic and aircraft performance models and their usability for different fields of application.