Trends in aero-acoustic wind tunnel testing
Keywords:Acoustics, Aerodynamics, Innovation, Signal to noise ratio, Spectroscopy, Tunnels, Vehicles, Background noise, Frequency spectra, General motors, Vehicle noise, Wind-tunnel testing
AbstractSome of the latest trends in new aero-acoustic wind tunnels, upgraded aerodynamic wind tunnels, and climatic wind tunnels are presented in terms of innovation to serve as aero-acoustic tools for the vehicle designer. The goal for better simulation in a wind tunnel is to have a signal to noise ratio of about 10dB between vehicle noise and background noise across the full frequency spectrum for a given vehicle. GIE S2A 24M2 automotive aero-acoustic wind tunnel and General Motors Aerodynamic Lab (GMAL) 56.2m2 are two of the latest innovations in the field of aero-acoustic tools for vehicle designers.
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