CALCULATION OF TRANSONIC ROTOR NOISE USING A FREQUENCY DOMAIN FORMULATION

This paper presents a formulation of the prediction of transonic quadrupole rotor noise in hover using a frequency domain method. The technique is applied to compute the high-speed noise of a model rotor. Tests on the computational stability of the method are presented and theoretical results are compared with published experimental data. Noise predictions on rotors with swept-tip blades are made and discussed.