Figure 1: Concept craft in full dynamically controlled foiling mode (self-propelled) tested with waves in Seakeeping and Manoeuvring Basin
Foiling future and the Wageningen -series JIP proposal
Luigi Francesco Minerva & Francisco Miguel Montero,
l.minerva@marin.nl
Renewed interest in the use of foiling triggers new research efforts The first concept of a foiling boat was developed way back in the early 1900s on Lake Maggiore in Italy but the real industrial developments started in the 50s, and peaked in the 80s. Despite the obvious advantages in terms of improved seakeeping and resistance reduction at high speed, new development has stalled and the current fleet is slowly fading away.
However, there has been a resurgence in interest in using foiling for passenger transport, naval applications or leisure and top sport activities (such as the America’s Cup or the Ocean Race). This new interest comes from better developed and mature technology when it comes to composite materials, light weight structures and improved ride controls. The latter being important for safety, efficiency, ride comfort and health. More advanced structural and hydro- dynamic simulation capabilities have also helped design advanced solutions.
12 report
From a long-term perspective, MARIN’s main research objective is to develop new concepts for foiling vessels (possibly combined with a foil integrated electric propulsion system), advanced controls and deforming lifting foils. Within the next two years, we aim to provide a complete design methodology that facilitates early design decisions concerning the foils (and controls)
for future foiling crafts. Furthermore, simulation strategies will be developed both for optimisation of the control system but also for crew training.
Recent test campaigns in unsteady conditions In 2018, a fully foiling, self-propelled craft was tested in MARIN’s Seakeeping and Manoeuvring Basin.
Figure 4: Example of lift coefficient sensitivity to unsteady angle of attack variation during pitch oscillation (left) or sensitivity to depth variation (right) during heave oscillation
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