Search results for "sailing"
showing 6 items of 16 documents
A multi-technique simultaneous approach for the design of a sailing yacht
2015
In this paper, most significant steps involved during the whole process of designing a sailing yacht are outlined. In particular, a novel simultaneous approach has been proposed to optimize the design process of a sailing yacht. Analytical resistance prediction models are simultaneously used with CAD systems and computational fluid dynamics tools to find, in the more effective way, the best solution for the chosen design conditions. As a general rule, in fact, once the target point has been decided, task of the designer is the definition of those systems of aerodynamic and hydrodynamic forces that are in equilibrium when the boat sails at its target. Unfortunately, a multi-purpose yacht doe…
Parametric Hull Design with Rational Bézier Curves and Estimation of Performances
2021
In this paper, a tool able to support the sailing yacht designer during the early stage of the design process has been developed. Cubic Rational Bézier curves have been selected to describe the main curves defining the hull of a sailing yacht. The adopted approach is based upon the definition of a set of parameters, say the length of waterline, the beam of the waterline, canoe body draft and some dimensionless coefficients according to the traditional way of the yacht designer. Some geometrical constraints imposed on the curves (e.g., continuity, endpoint angles, curvature) have been conceived aimed to avoid unreasonable shapes. These curves can be imported into any commercial Computer Aide…
List of Russian sailing vessels of 75 tons and upwards, registered in the ports of the Baltic sea
1905
Titullapa angļu valodā, teksts vācu un angļu valodā
‘Old English lida and the Sailors of the North Sea’
2017
The essay examines the words for ‘sailor’ in the Germanic languages, with particular regard to those going under the sobriquet of North Sea Germanic languages. The research begins with the lida of Maxims I and his safe return home. As with OE lida and līðend, nomina agentis from verbs of motion turn out to be among the most frequent formations for ‘sailor’, both in OE and many other Germanic languages. The research does not yield a common stock of Germanic words, but for the cognates of OE scipmann and sǣmann, that, however, are not recorded in all the Germanic languages. As to the līðend-compounds, their occurrence in more than one language might be due to the influence of OE models on bot…
Using FEM simulation to predict structural performances of a sailing dinghy
2017
The use of finite element method (FEM) tools is proposed to investigate the structural response of an eco-sustainable sailing yacht to different loading conditions, typical of those acting during regattas. The boat is, in particular, a 4.60 m dinghy with the hull and the deck made of an hybrid flaxâcork sandwich and internal reinforcements made of marine plywood. A preliminary activity has consisted in the refitting of an existing model in order to reduce the hull weight and to improve performances during manoeuvrings. These tasks have been interactively simulated in the virtual environment of the boat CAD model, where longitudinal and transversal reinforcements were enlightened and the m…
Veleggiare in gara
2015
Regulation of sailing sports during a race and civil liability of partecipants have a specific rule within the legal order of maritime law. The article focuses on pleasure navigation for sportive reasons, the level of sailing risk accepted by all partecipants, the damages occurring during a sailing race.