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http://dx.doi.org/10.3744/SNAK.2016.53.3.201

Studies on Planing Avoidance Control for a Ventilated Supercavitating Vehicle  

Park, Jongyeol (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Kim, Seonhong (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Kim, Nakwan (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.53, no.3, 2016 , pp. 201-209 More about this Journal
Abstract
Supercavitation is a technology that reduces frictional resistance of an underwater vehicle by surrounding it with bubbles. Supercavity is divided into natural supercavity and ventilated supercavity which is formed by artificially supplying gas. Planing forces are present when a section of the underwater vehicle goes outside of the cavitation region in the supercavity condition. Planing often leads to an unstable flight because it acts vertically on the body suddenly. In this paper, a relationship between the ventilation rate and the cavitation number is determined. Based on the relationship, desired cavitation number which can avoid to planing is determined and then ventilation controller is designed. The performance of the ventilation controller is verified with a depth change controller using the cavitator. Simulation results show that the ventilation controller can minimize the planing force and moment.
Keywords
Supercavitating underwater vehicle; Ventilated cavity; Planing modeling; Depth control; Ventilation control;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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