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Prediction of Hydrodynamic Coefficients for Underwater Vehicle Using Rotating Arm Test

강제선회시험을 이용한 수중운동체의 유체력 미계수 추정

Jeong, Jae-Hun;Han, Ji-Hun;Ok, Jihun;Kim, Hyeong-Dong;Kim, Dong-Hun;Shin, Yong-Ku;Lee, Seung-Keon
정재훈;한지훈;옥지훈;김형동;김동훈;신용구;이승건

  • Received : 2015.06.25
  • Accepted : 2015.02.18
  • Published : 2016.02.28

Abstract

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.

Keywords

Rotating arm test;Hydrodynamic coefficient;Underwater vehicle;Depth ratio;Dynamic stability

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Cited by

  1. 6DOF Simulation and Determination of Hydrodynamic Derivatives of Underwater Tow-Fish Using CFD vol.53, pp.4, 2016, https://doi.org/10.3744/SNAK.2016.53.4.315
  2. Hydrodynamic calculation and analysis of a complex-shaped underwater robot based on computational fluid dynamics and prototype test vol.9, pp.11, 2017, https://doi.org/10.1177/1687814017734500

Acknowledgement

Grant : SECRET PROJECT

Supported by : SECRET PROJECT