A series of experiments was carried out to investigate the acoustical behaviour of different propellers for values of the advance ratio spanning from zero to about one. At zero advance ratio the propellers were tested in a small anechoic chamber and the spatial distribution of the acoustic signature and of the sound pressure level has been evaluated. The preliminary data at positive advance ratios were obtained in the wind tunnel of the Aeronautical Laboratory of the Department of Mechanics and Aeronautics in Rome and are also presented here. In addition to the experimental investigation, a numerical analysis, based on a simple aerodynamic model, was performed and the results are compared with the test data and discussed in this paper. © 2010 by the American Institute of Aeronautics and Astronautics, Inc.
Experimental analysis of UAV- propeller noise / Marino, Luca. - STAMPA. - (2010). (Intervento presentato al convegno 16th AIAA/CEAS Aeroacoustic Conference tenutosi a Stockholm; Sweden).
Experimental analysis of UAV- propeller noise.
MARINO, Luca
2010
Abstract
A series of experiments was carried out to investigate the acoustical behaviour of different propellers for values of the advance ratio spanning from zero to about one. At zero advance ratio the propellers were tested in a small anechoic chamber and the spatial distribution of the acoustic signature and of the sound pressure level has been evaluated. The preliminary data at positive advance ratios were obtained in the wind tunnel of the Aeronautical Laboratory of the Department of Mechanics and Aeronautics in Rome and are also presented here. In addition to the experimental investigation, a numerical analysis, based on a simple aerodynamic model, was performed and the results are compared with the test data and discussed in this paper. © 2010 by the American Institute of Aeronautics and Astronautics, Inc.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
