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http://dx.doi.org/10.5050/KSNVE.2011.21.5.437

Self Noise Analysis of Towed Array Sonar Induced by Axisymmetric Vibrations Propagating Along Fluid-filled Elastic Hoses  

Ryue, Jung-Soo (울산대학교 조선해양공학부)
Shin, Hyun-Kyung (울산대학교 조선해양공학부)
Ahn, Hyung-Taek (울산대학교 조선해양공학부)
Kwon, Oh-Cho (국방과학연구소 제6기술연구본부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.5, 2011 , pp. 437-446 More about this Journal
Abstract
Performance of array sonars towed underwater is limited due to the self-noise induced mainly by the strumming vibration of the towing cable and also turbulent flow around the acoustic sensor module. The vibration of the towing cable generates axisymmetric waves that propagate along the acoustic module of the array sonar and produce self-noise. The present study aims to investigate the characteristics of the self-noise induced by the axisymmetric vibrations of the acoustic module. The waves of interest are the bulge and extensional waves propagating along the fluid-filled elastic hose. Dispersion relations of these waves are predicted by means of the numerical simulation to evaluate the wave speeds. The self-noise induced by the axisymmetric waves are formulated taking into account the damping of the elastic hose and the effect of the damping is investigated.
Keywords
Towed Array Sonar; Self-noise; Bulge Wave; Extensional Wave;
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Times Cited By KSCI : 1  (Citation Analysis)
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