Acoustic characterization of an anechoic wind tunnel facility at the University of Florida is presented. A previously existing and ISO 3745 validated 100 Hz anechoic chamber is upgraded to incorporate an open-jet anechoic wind tunnel facility suitable for airframe noise studies. The design and preliminary characterization results at 17 m/s was initially presented in reference 1. This paper presents new acoustic characterization data with an empty test section for test section speeds up to UTS = 31.2 m/s. These new measurements show the overall SPL from 100 Hz–20 kHz ranges from 51 dB (re 20 μPa) at 13.4 m/s to 73 dB at 31.2 m/s.

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