File:A comparison of ship maneuvering characteristics for rudders and podded propulsors (IA acomparisonofshi109451023).pdf
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Summary
[edit]A comparison of ship maneuvering characteristics for rudders and podded propulsors ( ) | |
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Author |
Betancourt, Michelle K. |
Title |
A comparison of ship maneuvering characteristics for rudders and podded propulsors |
Publisher |
Monterey, California. Naval Postgraduate School |
Description |
A comparison of a high speed container ship using a rudder versus a podded propulsor is made to study replacing a rudder with a pod. A mathematical model is altered to simulate a ship operating with a rudder and with a pod to maneuver. The model incorporates the nonlinear maneuvering equations and couples the surge and sway forces, yaw and roll moment, and the roll angle induced during a steady turn with varying rudder and pod angles. The model uses the hydrodynamic derivatives and coefficients for a high speed container ship. The equations are numerically integrated in order to predict the roll angle, sway and surge velocities, and the ship's position in the xy-plane. Both transient and steady state results are utilized to quantify the relative efficiency of each system. The results are used as a preliminary study into replacing a rudder on a ship with a podded propulsor. The results indicate that the ship responds faster and has a shorter turning radius with the pod at lower initial speeds and pod angles, while the rudder responds better at high speeds regardless of angle. Further research is necessary to study the effects of changing the pod's position and increasing the number of pods used. Subjects: Steering-gear; Marine engineering; Ship propulsion |
Language | English |
Publication date | June 2003 |
Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
Accession number |
acomparisonofshi109451023 |
Source | |
Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted. |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 21:47, 13 July 2020 | 1,275 × 1,650, 86 pages (800 KB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection acomparisonofshi109451023 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #5238) |
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Short title | A comparison of ship maneuvering characteristics for rudders and podded propulsors |
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Author | Betancourt, Michelle K. |
Software used | Betancourt, Michelle K. |
Conversion program | Acrobat Distiller 5.0.5 (Windows) |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |