摘要：Phased array technologies have been developed at Virginia Tech to perform noise source identification of aerodynamic noise sources, i.e. noise due to flow. A 32 element phased array was designed, tested an implemented. Details on the design process are shown. Preliminary testing in the anechoic chamber and the wind tunnel was conducted to evaluate the performance of the array in out-of-flow and in-flow condition. Results for the most significant preliminary tests are also shown. As part of this work, noise source identification on a 26%-scale 777 main landing gear model was performed at the Virginia Tech 6- by 6-foot Stability Wind Tunnel. Illustrative results of the phased array performance are presented here.
其他摘要：Phased array technologies have been developed at Virginia Tech to perform noise source identification of aerodynamic noise sources, i.e. noise due to flow. A 32 element phased array was designed, tested an implemented. Details on the design process are shown. Preliminary testing in the anechoic chamber and the wind tunnel was conducted to evaluate the performance of the array in out-of-flow and in-flow condition. Results for the most significant preliminary tests are also shown. As part of this work, noise source identification on a 26%-scale 777 main landing gear model was performed at the Virginia Tech 6- by 6-foot Stability Wind Tunnel. Illustrative results of the phased array performance are presented here.
