If you thought the current trend for foiling boats resulted in some strange looking craft you ain’t seen nothing yet. A specialist shipyard in La Rochelle, France has started building a range of wing-shaped catamarans that rely on aerodynamics rather than hydrodynamics to help them ‘fly’ over the water. Known as Advanced Aerodynamic Vessels, or A2Vs, they are capable of speeds up to 50 knots while also halving the fuel consumption of a typical craft of this size and pace.
They work by taking advantage of an aerodynamic phenomenon known as wing-inground effect. Conventional plane wings are shaped in such a way that as they pass through the air they generate low pressure on the top side and high pressure on the underside. The combined effect is lift. The closer the wing is to the ground, or in this case the surface of the sea, the more efficient it becomes as the high-pressure air is sandwiched between two surfaces. This is even more effective in the case of a catamaran as the hulls prevent the high-pressure air escaping from the side as well, creating more lift relative to speed.
Bu hikaye Motor Boat & Yachting dergisinin June 2021 sayısından alınmıştır.
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Bu hikaye Motor Boat & Yachting dergisinin June 2021 sayısından alınmıştır.
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Already a subscriber? Giriş Yap
Lofoten or Bust- Part 4- Grandezza owner Per Harrtoft heads back to Sweden after an epic 3500nm adventure deep into the Arctic Circle to visit the mythical Lofoten islands
After ten memorable days in the Lofoten Islands in the far north of Norway, we are on our way back south towards Sweden. We have already made it as far as Trondheim, a charming place even if it was raining so hard we had to cycle round the city centre clutching umbrellas. But now we are back on board Deamare, our Grandezza 40 Fly, eating up the miles at a steady 31 knots.
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