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Modelling multiple yacht sailing interactions between upwind sailing yachts
Journal of Marine Science and Technology, 2011An approach for enhancing the realism of yacht fleet race simulations based on a lifting line method is developed. The wake of an upwind sailing yacht is represented as a single heeled horseshoe vortex and image system. At each time step, changes in vortex strength are convected into the wake as a pair of vortex line elements.
Spenkuch, Thomas +3 more
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SNAME 6th Chesapeake Sailing Yacht Symposium, 1983
A joint SNAME/USYRU Project for Safety From Capsizing has led to significant progress in an understanding of the causes and mechanism of the single wave impact capsize. The paper traces the background of the project, outlines the approach selected in pursuing answers to the concerns of the yachting community, presents related findings ...
Karl Kirkman +2 more
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A joint SNAME/USYRU Project for Safety From Capsizing has led to significant progress in an understanding of the causes and mechanism of the single wave impact capsize. The paper traces the background of the project, outlines the approach selected in pursuing answers to the concerns of the yachting community, presents related findings ...
Karl Kirkman +2 more
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SNAME 5th Chesapeake Sailing Yacht Symposium, 1981
The 1979 Fastnet focused attention upon yacht capsizes and resulting damage and loss of life. A classical stability analysis does not clearly reveal some of the characteristics of the modern racing yacht which may exacerbate a capsizing tendency.
Olin J. Stephens +2 more
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The 1979 Fastnet focused attention upon yacht capsizes and resulting damage and loss of life. A classical stability analysis does not clearly reveal some of the characteristics of the modern racing yacht which may exacerbate a capsizing tendency.
Olin J. Stephens +2 more
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Instationary aeroelastic computation of yacht sails
International Journal for Numerical Methods in Engineering, 2001AbstractEffective schemes exist to calculate aerodynamic forces for thin bodies and structural dynamics of flexible membranes. The fluid dynamic of thin wings in a irrotational flow leads to the lifting surface theory. Neglecting the inertia of the membrane the structural dynamics are solved by the non‐linear (FEM).But the interaction of flexible ...
Schoop, Heinrich, Bessert, Nicolas
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Rudder Winglets on Sailing Yachts
Marine Technology and SNAME News, 1997During the defender round robins of the 1995 America's Cup, the yacht Young America featured a pair of rudder winglets. Their raison d'etre was to improve the vessel rough water performance, and in particular reduce her added resistance in waves. This article presents the background analysis which leads to the conclusion that rudder winglets may ...
Paul D. Sclavounos, Yifeng Huang
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Journal of Fluid Mechanics, 1978
This paper contains a simple and entirely conventional application of lifting-line theory to a close-hauled, high aspect ratio sail, set upright on a flat water surface. In seeking an optimum spanwise loading distribution however, an unconventional criterion is used, which leads to an unexpected result.By seeking to maximize the forward thrust for a ...
Wood, C. J., Tan, S. H.
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This paper contains a simple and entirely conventional application of lifting-line theory to a close-hauled, high aspect ratio sail, set upright on a flat water surface. In seeking an optimum spanwise loading distribution however, an unconventional criterion is used, which leads to an unexpected result.By seeking to maximize the forward thrust for a ...
Wood, C. J., Tan, S. H.
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Flotation for Ballasted Sailing Yachts
SNAME 2nd Chesapeake Sailing Yacht Symposium, 1975The thought of accidentally sinking after being damaged makes every skipper shudder at his probable helplessness in staying afloat. Sooner or later, yachtsmen will demand positive flotation for all boats through 65 feet in length. What should the Naval architect be doing and what can the builders expect in new materials and arrangements for flotation?
Vance O. Wilson, Wolfgang Reuter
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Hydrodynamic Modeling of Sailing Yachts
SNAME 15th Chesapeake Sailing Yacht Symposium, 2001In modem yacht design geometric modeling is regarded to be directly related to the hydrodynamic performance of the shape of the hull and its appending elements -usually the keel, often with winglets, and the rudder. While the traditional way of shape design - i.e., drawing, model building, tank testing, modifying .
Stefan Harries +2 more
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Modeling and nonlinear heading control for sailing yachts
OCEANS'11 MTS/IEEE KONA, 2011This paper presents a study on the development and testing of a model-based heading controller for a sailing yacht. Using Fossen's compact notation for marine vehicles, we first describe a nonlinear 4-DOF dynamic model for a sailing yacht, including roll.
Xiao, Lin, Jouffroy, Jerome
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