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http://dx.doi.org/10.5394/KINPR.2011.35.3.197

An Experimental Study on Characteristics of Hydrodynamic Forces Acting on Unmanned Undersea Vehicle at Large Attack Angles  

Bae, Jun-Young (Dept. of Shipbuilding Information, Dongju College University)
Kim, Jeong-Jung (Korea Maritime University Graduate School)
Sohn, Kyoung-Ho (Dept. of Naval Architecture and Ocean Systems Engineering, Korea Maritime University)
Publication Information
Journal of Navigation and Port Research / v.35, no.3, 2011 , pp. 197-204 More about this Journal
Abstract
The authors adopt the Unmanned Undersea Vehicle(UUV), the shape of which is like a manta. They call here it Manta UUV. Manta UUV has been designed from the similar concept of the UUV called Manta Test Vehicle(MTV), which was originally built by the Naval Undersea Warfare Center of USA(Lisiewicz and French, 2000; Simalis et al., 2001; U.S. Navy, 2004). The present study deals with the effect of Reynolds numbers on hydrodynamic forces acting on Manta UUV at large angles of attack. The large angles of attack cover the whole range of 0 to ${\pm}$ 180 degrees in horizontal plane and in vertical plane respectively. Static test at large attack angles has been carried out with two Manta UUV models in circulating water channel. The authors assume that the experimental results of hydrodynamic forces (lateral force, yaw moment, vertical force and pitch moment) are analyzed into two components, which are lift force component and cross-flow drag component. First of all, Based on two dimensional cross-flow drag coefficient at 90 degrees of attack angle, the cross-flow drag component at whole range of attack angles is calculated. Then the remainder is assumed to be the lift force component. The only cross-flow drag component is assumed to be subject to Reynolds number.entstly the authors suggest the methodology to predict hydrodynamic derivertives acting on the full-scale Manta UUV.
Keywords
Unmanned Undersea Vehicle; Model experiment in circulating water channel; cross-flow drag; Effect of Reynolds number;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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