Human-powered hydrofoil

From Wikipedia, the free encyclopedia

A human-powered hydrofoil is a small hydrofoil boat propelled entirely by the muscle power of its operator.[1] A typical design for human powered hydrofoils consists of a large hydrofoil at the stern end that is used both for propulsion and keeping the vehicle above the water, connected to a smaller foil at the bow used for steering. Riders operate the vehicle by bouncing up and down on a small platform at the stern, whilst holding onto a steering column.[2][3] Other designs, for example pedal-powered and propeller-driven models, also exist. Human powered hydrofoils are the fastest water-based vehicles propelled solely by human power. They can reach speeds of up to 34 km/h (21 mph; 18 knots)[4][1], easily exceeding the world records set by competitive rowing which stand at about 20 km/h. This speed advantage is achieved since human-powered hydrofoils lack a submerged body to provide buoyancy, greatly reducing the drag force.[1]

[edit] References

  1. ^ a b c Graham-Rowe, Duncan. "Human-powered hydrofoil seeks jumpy riders", New Scientist, 2005-05-23. 
  2. ^ Suzi goes for a bit of pumping. Five - The Gadget Show (2006-10-16). Retrieved on 2008-04-29.
  3. ^ Pumpabike: Human-Powered Hydrofoil. Gizmodo (2005-05-24). Retrieved on 2008-04-29.
  4. ^ Pumpabike personal hydrofoil. Stuff.tv (2005-12-17). Retrieved on 2008-04-29.