Manoeuvring characteristics of twin-rudder systems: rudder-hull interaction effect on the manoeuvrability of twin-rudder ships

With a recent increase in ship capacity and propulsion performance, a wide-beam ship fitted with a twin-rudder system has been adopted in many cases. However, to improve ship manoeuvring, it is still necessary to have a better understanding of rudder-hull interactions in twin-rudder ships. Captive m...

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Bibliographic Details
Published inJournal of marine science and technology Vol. 16; no. 4; pp. 472 - 490
Main Authors Khanfir, Sahbi, Hasegawa, Kazuhiko, Nagarajan, Vishwanath, Shouji, Kouichi, Lee, Seung Keon
Format Journal Article
LanguageEnglish
Published Japan Springer Japan 01.12.2011
Springer
Springer Nature B.V
Subjects
Automotive Engineering
Design engineering
Engineering
Engineering Design
Engineering Fluid Dynamics
Fluid mechanics
Mechanical Engineering
Offshore Engineering
Original Article
Propellers
Ships
Single-propeller twin-rudder system
Hull-rudder interaction coefficients
Rudder normal force
Twin-propeller twin-rudder system
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Summary:With a recent increase in ship capacity and propulsion performance, a wide-beam ship fitted with a twin-rudder system has been adopted in many cases. However, to improve ship manoeuvring, it is still necessary to have a better understanding of rudder-hull interactions in twin-rudder ships. Captive model tests (oblique towing and circular motion test) as well as free-running tests with a single-propeller twin-rudder ship and a twin-propeller twin-rudder ship are carried out. The effect of drift angle on the rudder forces and some peculiar phenomena concerning rudder normal force for twin-rudder ships are evaluated. A method for estimating the hull-rudder interaction coefficients based on free-running experimental results is proposed.
ISSN:0948-4280
1437-8213
DOI:10.1007/s00773-011-0140-3