Aircraft noise calculations are rather complex because of the variety of source locations and the moving sources. The scenario defines manageable inputs for the acoustic calculation, which may vary in complexity according to the needs. The aircraft sound calculation program within IMAGINE (Improved Methods for the Assessment of the Generic Impact of Noise in the Environment) will be a very versatile instrument, which offers many features usually not available with today's widely used programs like INM (Integrated Noise Model). The various approaches to calculate aircraft noise are reviewed and the state of the art is described. Special attention is given to the description of airport operation, which has to be mapped into suitable input data for the calculations. The key feature of any aircraft noise calculation program is the availability of reliable and accurate sound source data for the aircraft types. Therefore, the lack of detailed source data for a large number of aircraft types prevents many sophisticated models from being used outside research areas. Within the EU6 project IMAGINE the methods are developed to use for aircraft noise calculations the same acoustic approach as e.g. for traffic noise by separating source emission and propagation. The application of that concept to aircraft noise is described.
Concepts of aircraft noise calculations
Konzepte zur Berechnung von Flugzeuggeräuschen
Acta Acustica united with Acustica ; 93 , 2 ; 253-262
2007
10 Seiten, 6 Bilder, 50 Quellen
Article (Journal)
English
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