Publication Detail

Hydrodynamic Design of a Family of Hybrid SWATH Unmanned Surface Vehicles

Stefano Brizzolara, Marco Bovio, Alessandro Federici, Giuliano Vernengo
2011
9 pp.
MITSG 11-21
$5.50 DOM / $7.50 INT
ORDER HARDCOPY / DOWNLOAD

This paper presents the concept designs of two autonomous marine vehicles belonging to a new family of unconventional SWATHs optimized for low resistance at high speeds. The focus is concentrated on the prediction of the hydrodynamic characteristics and the optimization methods used to design the hull forms in order to minimize the propulsion power at the operational speed of the vehicles. For both vessels a modern automatic parametric optimization computer based procedure has been developed and RANSE calculations performed to validate the final design. The second vessel, is a hybrid SWATH, capable of reaching a top speed of 120 knots in the foil-born mode, at which four supercavitating hydrofoils are folded down into water. Main issues related to the design of surface piercing super-cavitating hydrofoils, for operation at such a high speed, are presented and discussed on the basis of the results obtained through CFD simulations and feedback from preliminary results of model tests in cavitation tunnel.

type: Workshops, proceedings, symposia

Parent Project

Project No.: 2008-ESRDC-01-LEV
Title: Electric Ship Research and Development Consortium (ESRDC)

Other publications by this author (as Lead)