Abstract
The aeroacoustic measurement using a half-span aircraft model equipped with high lift devices was carried out for the first time in JAXA 6.5m x 5.5m low speed wind tunnel. As the result of this test, the noise sources located at main wing tip, slat tracks, slat tip, flap tip, the slat-pylon region and so on are observed. The noise generated from wing tip and outboard flap tip had a strong dependence on Reynolds number and angle of attack. However, the noise generated from slat tracks and the slat-pylon region didn’t have a dependence on neither Reynolds number nor angle of attack. In this paper, a phased array system in JAXA is introduced, then the results of noise measurements for high lift devices are presented.
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