Abstract
The article presents the results of the research on the interaction of rudder propellers (RP) with the hull and with each other in the dynamic positioning mode. It has been determined that the stop loss of the whole dynamic positioning system varies from 30 to 70% in any location of the RP. Research has been conducted to study the physical effect and interaction of the RPs with the hull and with each other. The results, obtained through this research, show that the drop in thrust can reach 55 % in case of RPs' interaction with each other and 15% in case of the RP's interaction with the hull. Neglecting these physical phenomena leads to the ship's positioning capability overestimation when operating in in difficult conditions, which substantially increases the accident risk and reduces the ship's economic efficiency. It is shown that the interaction of the RPs with the hull and with each other in the dynamic positioning mode must be taken into account when selecting the control means for sea and river facilities and developing the principles of motion control.
Keywords: propeller-steering columns, means of active management, dynamic positioning mode, interaction with the ship's hull, model trials.
References
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About authors
Solyakov Oleg - PhD, associate professor, FSEI HE "Admiral Makarov State University of Maritime and Inland Shipping", 5/7, Dvinskaya st., 198035, St. Petersburg, Russia, e-mail: solyakovl@yandex.ru
Kutin Nikolay - FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia, e-mail: 9_otd@ksrc.ru
Efremov Aleksander - FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia
Magarovsky Vyacheslav - PhD, FSUE "Krylov State Research Center", 4, Moskovskoe shosse, 196158, St. Petersburg, Russia, e-mail: V_Magarovskiy@ksrc.ru
Issue: 46/47 (2017)
For citation: O.V. Solyakov, N.A. Kutin, A.S. Efremov, V.V. Magarovsky. Studies of the rudder propellers' interaction with the hull and with each other in the dynamic positioning mode. Research Bulletin by Russian Maritime Register of Shipping. 2017, No. 46/47, pp. 89-92.
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