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- Title
A proposal for propulsion performance prediction of a single-propeller twin-rudder ship.
- Authors
Nagarajan, Vishwanath; Kang, Dong-Hoon; Hasegawa, Kazuhiko; Nabeshima, Kenjiro; Arii, Toshihiko
- Abstract
Abstract The influence of a rudder’s axial force on the prediction of full-scale powering performance of a ship is investigated in this paper. Axial force characteristics of different rudder types were investigated by open water experiments. Viscous scale effects on the rudder’s axial force were investigated by carrying out open water experiments with different sizes of rudder. Experiments were carried out in the towing tank for a model ship fitted with different rudder systems to investigate the influence of rudder’s axial force on full-scale propulsion performance prediction. Based on the experiment results, a new prediction method is proposed for estimating full-scale power that considers scale effect on rudder’s axial force. Good performance of the proposed prediction method is demonstrated by estimating the engine power of a ship installed with a special high lift twin-rudder system from model experiments and comparing it with the values measured on the ship during full-scale experiments.
- Subjects
SHIP propulsion; STEERING gear; MARINE towing; FORCE &; energy; SCIENTIFIC experimentation; COMPARATIVE studies; PREDICTION models
- Publication
Journal of Marine Science & Technology, 2009, Vol 14, Issue 3, p296
- ISSN
0948-4280
- Publication type
Article
- DOI
10.1007/s00773-009-0043-8