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Aircraft Noise Prediction in the Iesta Program

Profile image of P. MalbéquiP. Malbéqui

Abstract

The aim of the IESTA program (Infrastructure for Evaluating Air Transport Systems) is to provide an efficient tool in the design and modelling of innovative air transport systems through a global evaluation platform. The first application of IESTA is focused on the environmental impact of the air traffic surrounding airports, including noise and chemical emissions. This paper presents the acoustic model dedicated to the aircraft noise prediction. Based on the different physical phenomenon, this model includes three modules: the acoustic source models, the installation effects and the atmospheric propagation. The noise source module describes the models for jet, fan, landing gears and high-lift devices which are mainly responsible for aircraft noise during take-off and landing. The module for the installation effect concerns the influence of aircraft surfaces on acoustic radiation, using a Ray Tracing method. Both direct and reflected fields are computed using Geometrical Acoustics p...

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References (9)

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  2. M. Brunet M., P. Malbéqui, W. Ghedhaifi. A novel approach to air transport system environmental impact evaluation through physical modelling and simulation, 26 th International Congress of the Aeronautical Sciences (ICAS'08), USA, September 2008.
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  7. M. F. Heidmann, "Interim prediction method for fan and compressor source noise," NASA TM-X- 71763 (1979).
  8. R. G. Kouyoumjian, P. H. Pathak, A Uniform Geometrical Theory of Diffraction for an Edge in a Perfectly Conducting Surface, Proc. IEEE, vol. 62, no. 11, pp. 1448-1461, Nov. 1974.
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