A four-ring, broadband receiver array was designed, fabricated, and tested by the Applied Research Laboratory at Pennsylvania State University to replace the existing downstream array in the large diameter water tunnel. The new array (ARL no. 02-16) provides a substantially larger frequency-operating band (0.5 to 200 kHz) than the previous array. The array is fabricated from 1-3 composite materials and has four separate ring channels and a sum (all four ...
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