Method for reducing flow induced vibration and noise in towed arrays
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsWilliam L. Keith, Kimberly M. Cipolla
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Abstract
A method for reducing noise in a towed acoustic array includes providing a towed array having a length, diameter, frequency range and tow speed. The relationship between tension in the towed array and wall pressure fluctuation spectral levels is determined. Wall pressure fluctuation spectral levels are related to the noise in the array. An optimal towed array tension is calculated using the determined relationship. Tension is increased to the optimal towed array tension by either provided additional towed array hose or a drogue at the end of the towed array.
Claims6
A method for reducing noise in a towed acoustic array comprising the steps of:
- providing a towed array having a length, diameter, frequency range and tow speed;
- determining the relationship between tension in the towed array and wall pressure fluctuation spectral levels, said wall pressure fluctuation spectral levels being related to the noise;
- calculating an optimal towed array tension using the determined relationship;
- and
- increasing the tension to the optimal towed array tension in the towed array while the towed array is being towed.
Dependencies are inferred from the claim text.