The paper presents a new configuration for roll fin stabilisers with increased maximum lift. The work is the results of a research project initiated by Fincantieri, that brought to the formulation of a patented fin configuration. A theoretical introduction of devices for lift increase is made, focusing on the physics of vortex generators for boundary layer control, which are employed in the new fin configuration. Experimental results (from model tests in cavitation tunnel) of the new solution respect to a reference conventional fin are presented and discussed. Major hydrodynamic advantages of the solution are: maximum lift increase of more than 10%, hydrodynamic efficiency increase of more than 15%, better cavitation behaviour and lower cavitation noise. The obtained hydrodynamic benefits are translated into tangible engineering advantages by means of an application example of the patented solution to a couple of fixed anti-roll fins for a patrol vessel. Substantial advantages in terms of increased stabilisation efficiency and easiness of installation/repairing are found.
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|Titolo:||New Types of Roll Fin Stabilisers with Increased Maximum Lift|
|Data di pubblicazione:||2000|
|Appare nelle tipologie:||04.01 - Contributo in atti di convegno|