• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.110-112
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• 2016

In this paper, the captive model test of submerged body using RA test was carried out at the Square Basin. The target model is a submarine with four different types. For the comparison between theory and measurement, hydrodynamic coefficients are calculated according to the described method and compared with RA measurements on Submarine models. in addition, horizontal stability index of underwater vehicle was checked.

• Journal of Ocean Engineering and Technology
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• v.30 no.1
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• pp.25-31
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• 2016

In this study, hydrodynamic coefficients were obtained from a Rotating Arm (RA) test, which is one of the captive model tests used to provide accurate coefficients in the control motion equation of an underwater vehicle. The RA test was carried out at the RA facility of ADD (Agency for Defense Development), and the forces and moments acting on the underwater vehicle were measured using a six-axis waterproof gage. A multiple regression analysis was used in the analysis of the measured data. The experimental results were also verified by comparison with the theoretical values of the previous linear coefficients. In addition, the stability indices in the horizontal plane were calculated using the linear and nonlinear coefficients, and the dynamic stability of the underwater vehicle was estimated to have a good dynamic performance with a depth ratio of 6.0.