Landing gears are the main contributors to airframe noise, and, given their complex geometry, their noise generation mechanisms are not easily obtained. Therefore, an experimental investigation was carried out to assess the main characteristics of a simplified nose gear geometry, composed by two wheels, an axle and a stepped main leg. The aerodynamic tests, including surface pressure measurements and flow mapping provided a great deal of information on the flow around the model and can be used to understand the phenomena regarding the noise generation. The phased array aeroacoustic measurements, with beamforming techniques, in both sideline and flyover positions provided encouraging results, compared to similar tests found in the literature. The contribution of each of the model components could also be verified through analytical models of noise generated from cavities, beamforming maps, near-field correlations and cavity fillers.
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