منابع مشابه
Improving the Efficiency of a High Speed Catamaran Through the Replacement of the Propulsion System
The high speed vessels are primarily designed for short distances services as public transport of passengers and vehicles. The range of high speed, according to the Code of high‐speed vessels begins at 20 knots, which depends on the cruise speed you desire for your vessel; you will have to use the most appropriate type of propellant. In general, in the past 20 years, they have been building...
متن کاملCfd Validation Studies for a High-speed Foil-assisted Semi-planing Catamaran
This paper details the CFD validation studies carried out as a pre-requisite for multi-fidelity CFD-based design optimization of high-speed passenger-only ferries aimed at reducing far-field wake energy that causes beach erosion. A potential flow code (WARP) and a URANS code (CFDShip) were validated using full-scale measurements of resistance, sinkage, trim, and far-field wake train obtained ov...
متن کاملpath following of a high speed planing boat based on gauss pseudospectral method
in this paper, the problem of optimal path following for a high speed planing boat is addressed. first, a nonlinear mathematical model of the boat’s dynamics is derived and then the serret-frenet frame is presented to facilitate the path following control design. to satisfy the constraints on the states and the input controls of the boat's nonlinear dynamics and minimize both the cross tracking...
متن کاملExperimental and CFD Study of Wave Resistance of High-Speed Round Bilge Catamaran Hull Forms
Although catamaran configuration has been around for a longtime, it is only in the recent past that such hull forms have seen unprecedented growth in the high-speed ferry industry. One of the design challenges faced by naval architects is accurate prediction of the hydrodynamic characteristics of such vessels primarily in the areas of resistance, propulsion and seakeeping. Even though considera...
متن کاملBoat Speed Monitoring Using Artificial Vision
This paper describes a method to detect, measure the speed, and extract statistics of boats moving on a wide water surface using a single image stream taken from grayscale camera. The approach is based on a background subtraction technique combined with classification and tracking to improve robustness; it provides a stable detection even with sea waves and strong light reflections. The method ...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1910
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07231910-64b