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The Analysis of Impact at the Fin of High Speed Water-Entry Body  

Nah, Young-In (ADD)
Lee, Sim-Yong (ADD)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.13, no.6, 2010 , pp. 1026-1033 More about this Journal
Abstract
The analysis of water-entry impact forces acting on the fin shaft of high speed water-entry body is described. During the entry of high speed body into water, the physical phenomenon and flow properties are analyzed. A proper analysis model is established and the method to estimate the flow force which causes impact torque at the fin shaft is described. It is assumed that the fin shaft is damaged by the force which is induced by contacting with cavity wall. The pressure distribution of fin and the maximum torque are estimated and compared with breaking force. Conclusively, it is hard to resist water-entry impact force in terms of the reinforcement of fin shaft. Additionally safe equipment is essentially required.
Keywords
Water-Entry Impact; High Speed Water-Entry Body;
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  • Reference
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