Daimlerchrysler Corporation

Mitchell M Puskarz

Jean P Mallebay-Vacqueur

A method for wind-noise testing of an automobile in a wind tunnel is disclosed. The method includes measuring wind-noise generated by the automobile in a first condition. The first condition is the condition of the automobile with a predefined set of exterior components attached. The method further includes measuring the wind-noise generated by the automobile in a second condition. The second condition is the condition of the automobile with all exterior components removed and all individual gaps taped. The second condition is the fully quiet condition of the automobile. The method also includes measuring the wind-noise generated by the automobile after adding a single individual exterior component and/or un-taping an individual gap.

Method for wind-noise testing of an automobile

An aerodynamic noise measurement system for a vehicle uses sound reflectors to determine the sound wave propagation of aerodynamic noise of the vehicle. The vehicle is placed within a test section of a wind tunnel. The air flow of the wind tunnel generates the aerodynamic noise as it passes over the vehicle. An array of sound reflectors is placed outside of the air flow of the wind tunnel. Microphone arrays receive the aerodynamic noise directly from the source and from the sound reflectors. An analyzer system forms an acoustic image of the vehicle based on the aerodynamic noise. A viewing device displays an image of the vehicle with an overlay of aerodynamic noise data in real-time.

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Troy, MI, United States of America

Mitchell M Puskarz