Challenges in Aircraft Noise Prediction

Abstract

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A Filippone
Greener Aviation Conference, Brussels, Belgium
Mar 2014

This contribution addresses the problem of aircraft noise prediction using theoretical methods. The problem is set in context with the needs at several levels to produce noise characterisation from commercial aircraft powered by gas turbine engines. We describe very briefly the computational model (whilst referring the reader to the appropriate literature), and provide examples of noise predictions and comparisons with measured data, where possible. We focus on the issue of stochastic analysis, which is required when the models rely on inaccurate, uncertain or unknown data. Examples are shown for the turboprop Bombardier Q400 and the Boeing B737-800. The paper finally addresses the challenges facing the development of accurate methods, their use in predicting existing and future aircraft noise. Calculations are shown with the author’s own FLIGHT computer program.

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