Authors: KunWoo Kim JaeWook Lee WanSuk Yoo
Publish Date: 2014/03/21
Volume: 77, Issue: 3, Pages: 553-568
Abstract
When a torpedo is launched from a mother ship a fiberoptic cable that exchanges information between the torpedo and the mother ship is unwound from a spool so as to enhance the shootdown performance The unwinding motion of the fiberoptic cable has been numerically analyzed using steady or transientstate equations of motion but the simulation has not been verified by physical experiments Therefore in this study the numerical results for the unwinding cable are verified with a labbased physical experiment The experiment considers realistic situations in which the cable is unwound from an outer spool package with three different unwinding velocities in water The transientstate equation of motion is derived in a Cartesian coordinates system using Hamilton’s principle for an open system In conclusion the numerical results are similar to the motion of the unwinding cable in the physical experiment Particularly the numerical results indicate that the motion observed in the physical experiment coincides better with the simulation as the unwinding velocity decreasesThis research was supported by the Agency for Defense Development ADD by the 2014 PostDoc Development Program of Pusan National University and by the New Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning KETEP Grant funded by the Korea Ministry of Knowledge Economy No 20113020020010
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