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http://dx.doi.org/10.5762/KAIS.2019.20.8.579

Experimental Analysis of Towing Attitude for I-type and Y-type Tail Fin of Active Towed SONAR  

Lee, Dong-Sup (Maritime Technology Research Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.8, 2019 , pp. 579-585 More about this Journal
Abstract
Increasing the detection probability of underwater targets necessitates securing the towing stability of the active towed SONAR. In this paper, to confirm the effects of tail wing fin on towing attitude and towing stability, two scale model experiments and one sea trials were conducted and the results were analyzed. The scale model tests measured the towing behavior of each of the tail fin shapes according to towing speed in a towing tank. The shape of the tail fin used in the scale model test was tested with an I-type tail fine and four Y-type tail fins, totaling five tail fins of the two kinds. The first scale model test confirmed that the Y-type tail fin was superior to the I-type tail fin in towing attitude and towing stability. The second scale model test confirmed the characteristics of the vertical tail fin height increase and the lower horizontal tail fin inclination angle application shape based on the Y-type tail fin. The shape of the application of the lower horizontal tail fin inclination angle showed the best performance. In order to verify the results of the scale model test, a full size model was constructed, sea trials were performed, and the towing attitude was measured. The results were similar to those of the scale model test.
Keywords
Towed Body; Tail Fin; Towing Attitude; Towing Stability; Scale Model Test;
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