![]() ![]() In the first instance, you're creating maximum drag, pushing against the water. Then, with your hand flat and parallel to the water's surface. First, with your hand cupped and upright against the water. Try moving your hand through the water in two ways. Test out hydrofoiling yourself the next time you have a bath! Instead of going through the waves, it gently 'flies' over the water's surface. ![]() And it is also why the boat leaves almost no wake (waves behind it). This technology is why a boat like the C-8 can have an engine that is so much smaller than your average motorboat. Now there is way less drag, and boat can move faster, all while using less energy. The only parts of the boat that are actually in the water are those wings. The drag created by the water means that a boat must work much harder than a car to go fast.īut on a hydrofoil, once the boat gets enough speed, the foils lift the boat up and above the water. As the boat smashes into the waves, it is slowed down even further. This is extra true if there are any waves. This is because water is a much thicker medium than air.Īs a normal boat moves, it is constantly being slowed down by the water 'pulling' on its hull. The water pulls at your legs, slowing you way down. ![]() Just try 'jogging' through a wading pool. If you've ever gone swimming, you've probably noticed something pretty quickly. Boats already float on the surface of water-they sit on top of the medium of water. The main hydrofoil on the C-8 looks simple, doesn't it? (Candela)Ī hydrofoil does the same thing, but through the medium of water, not air. Now the plane can fly through the air! Water wings In the case of a plane, it would cause it to slow down and stay on the ground.Īn aerofoil works because it is a shape that creates a lot of lift while reducing, or lowering, drag. Meanwhile, drag is a force that pushes against something. It is just a word for a huge 3D space of stuff. (In this case, 'medium' is not a drink size or shirt size. Lift is a force that creates upward motion through a medium. In flight, there are two main forces: lift and drag. Though exactly how each of these foils work can be complex, the general idea behind them is pretty simple. And some are from human-made craft, while others are from nature! (Wikimedia Commons) Some of them are aerofoils, others hydrofoils. These are different examples of foils as seen from the side. Basically, if you look at a plane's wing from the side, you'll see an aerofoil. And to do that, we begin in the air.Īirplanes use something called aerofoils to fly. Well, let's talk about what hydrofoiling is. It uses about 80 percent less energy than those crafts, too.Īnd it flies! (Sort of!) Have a look below, as the team talks about the process of building the craft. It goes faster, but has a smaller motor than a conventional motorboat. Made by a company called Candela, the C-8 is an all-electric hydrofoil that breaks a lot of rules of personal motorboats. ![]() And that makes this new Swedish motorboat really interesting. Across Europe and parts of Asia, these boats have been used for decades as passenger ferries along rivers and lakes.īut no matter where you live, hydrofoils are rarely used as personal boats. A boat with 'wings' under its hull might sound like science fiction to many people.īut depending on where you live, a hydrofoil might be a regular sight. ![]()
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