Abstract
A semiempirical method for estimating the noise of a propeller on the basis of the Lighthill analogy is proposed. The main relations of the computational model for the acoustic-radiation power have been obtained from a dimensional analysis of the general solution of the inhomogeneous wave equation for the pulsed acoustic radiation from a propeller. A comparison of the calculation and experimental data on the acousticradiation power and the one-third octave spectra of the sound pressure of four- and eight-blade AV-72 and SV-24 propellers is presented.
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