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Acoustic emissions were characterized for fourteen, 8×8 arrays of axisymmetric supersonic jets experimentally. The nozzle diameters ranged from 3.2mm (1/8in.) to 6.4mm (1/4in.) and the hole-to-hole spacing (S) over hole diameter (d), or the S/d ratios ranged from 1.44 to 3. The arrays were tested at several net pressure ratios ranging from 2 to 24. It was found that up to a critical net pressure ratio,...
Shockwave structures and overall sound pressure levels from 8×8 arrays of axisymmetric supersonic jets were experimentally characterized for 14 different arrays. The results were also compared to behavior for single jets of similar dimensions. The jet diameters ranged from 3.2 to 6.4mm and the jet spacing to diameter ratio ranged from 1.44 to 3. The arrays were tested at nominal net pressure ratios...
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