Determination of hydrodynamic coefficients by force excitation on free sailing ship models
de Vries, W.A. (1989). Determination of hydrodynamic coefficients by force excitation on free sailing ship models. Publications - Delft Hydraulics, 427. Delft Hydraulics Laboratory: Delft. 16 pp.
DHL has developed a special model testing technique for determination of manoeuvring coefficients, which is used in combination with straight line towing. A free sailing ship model is provided with two air propellers. These propellers excert lateral forces, which are controlled by a computer.
The paper discribes the system, including the instrumentation and method of analysis. Some results of recent investigations are shown and further applications of the system are discussed.
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