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http://dx.doi.org/10.9766/KIMST.2020.23.6.602

Tests on Ventilation Control of PRAIRIE for Improving Acoustic Stealth Performance  

Lee, Heechang (Maritime Technology Research Institute, Agency for Defense Development)
Moon, Youngsun (Maritime Technology Research Institute, Agency for Defense Development)
Kang, Seunghee (Maritime Technology Research Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.23, no.6, 2020 , pp. 602-608 More about this Journal
Abstract
PRAIRIE(Propeller Air Induced Emission) system is a kind of underwater radiated noise suppression systems to reduce the probability of the identification or classification of our warship's acoustic signature by an enemy ship. It is effective in case of strong cavitation events. This is because air bubbles emitted from the PRAIRIE system mitigate drastic collapses of the cavity bubbles that can generate an intense shock wave. However, when the PRAIRIE system is operated in a non or weak cavitation condition, it might increase the total level of underwater radiated noise and induce the acoustic signatures. Therefore, this paper presents the trial results on ventilation control of PRAIRIE to find a more efficient operation depend on the cavitation condition. Then, we show a variation of the amplitude modulation characteristics according to ventilation control.
Keywords
Cavitation Noise; PRAIRIE System; Acoustic Stealth;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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