32th Congress of the International Council of the Aeronautical Sciences

05 - Propulsion

THE RESEARCH ON PROPELLER NOISE PREDICTION METHOD FOR TURBOPROP AIRCRAFT

C. Huš, J. Guš, F. Gaoš; šAVIC The First Aircraft Institute, China

Three methods of propeller noise prediction for turboprop aircraft are introduced: the NASA method, the SAE method and the ESDU method .Combined with the noise test results of a turboprop aircraft, the prediction results of different methods are compared and analyzed, including the first ten orders sound pressure levels at passing through frequency and the total sound pressure levels. The results show that the SAE method is more suitable for predicting propeller noise. The propeller noise prediction program is written based on the prediction method, which can improve the calculation efficiency and accuracy. The distribution of propeller noise along fuselage is studied. The results show that the propeller rotating plan has the biggest noise, and the farther the focus position from the rotating plane, the smaller the total sound pressure level is.


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