Recent Applications of Hydrofoil-Supported- Catamarans
نویسنده
چکیده
Hydrofoil assistance on a catamaran model was tried twenty years ago and an unexpected resistance improvement of 40% initiated the creation of a research project to investigate the effect. Today the research project is still active inspite of designs and model tests resulting in the construction of over 200 Hysucats. Theoretical efforts to determine the hydrodynamics of the Hysucat principle resulted in a numerical model for design analysis of planing type Hysucats which allows further design optimization. The milestones in the Hysucat Development are mentioned and the ten most recent applications (1998/2001) explained. The smallest Hysucat, a 6,5m Semi-Rigid Inflatable Hysucat, a 12m Fast Patrol Boat by Stingray Marine (Cape Town), the Panther 64 Hysucat by Prout Catamarans (UK), the 21m Kingcat (France), the 22m Ferry Sea Princess of Cape Town, the 45m Halter Marine E-Cat (USA), the Cougar 15m Ferry, the Cougar 12m Yacht and the Alwoplast 16m Luxury Yacht with Semi-Displacement demihulls are described and the performance evaluation is discussed.
منابع مشابه
Design of Hydrofoil Assisted Catamarans using a Non-Linear Vortex Lattice Method
Extensive experimental investigations of hydrofoil-assisted catamarans have identified the main hydrodynamic parameters affecting the performance of these vessels. Design principles of existing vessels are discussed in the light of these hydrodynamic findings. The experience gained from experimental testing has provided the basis for the development of a non-linear vortex lattice method for des...
متن کاملFoil Application to Reduce Resistance of Catamaran under High Speeds and Different Operating Conditions
Today, researchers exploit hybrid craft more than they used to be. The main reason is that they need to high speed as well as extra portability. For instance, a famous hybrid craft is named Hysucat, was designed through the combination of catamaran and hydrofoil. Catamarans, a type of multihull boats, have always considered by designers because of their simultaneous supply of high speed and sta...
متن کاملNumerical optimization of hydrofoil geometry for a Darrieus hydraulic turbine using dynamic mesh and central composite design
In this study, a Darrieus hydraulic turbine for power generation applications is chosen and the response surface methodology (RSM) based on central composite design (CCD) is applied to obtain the optimized design for its hydrofoil geometry to increase the torque coefficient. For this aim, all turbine performance factors, except hydrofoil geometry, were considered to be constant and the turbine ...
متن کاملEffect of trailing edge shape on hydrodynamic damping for a hydrofoil
Flow induced vibration on a hydrofoil may be significantly reduced with a slight modification of the trailing edge without alteration of the hydrodynamic performance. Particularly, the so called Donaldson trailing edge shape gave remarkable results and is being used in a variety of industrial applications. Nevertheless, the physics behind vibration reduction is still not understood. In the pres...
متن کاملHydrofoils and Hydrofoil Craft
At the present time several hundred hydrofoil craft are in service throughout the world. The upsurge in the use of these craft did not really begin until the late 1950s, although fascination with the idea of supporting small boats with underwater wings dates well back into the nineteenth century. About he turn of the century, hydrofoil flight was achieved, to be followed in a few years by Bell ...
متن کامل