Thursday Video - The Parabike

The parabike can fly at speeds up to 8 knots

Here's an interesting comtraption - the parabike. It has a helium filled balloon to provide lift. The pilot pedals, which drives a big fan behind him to generate forward thrust. When the rudder is applied, the balloon remains essentially stationary, while the bike rotates underneath it. There is also an elevator which allows the craft to go up and down.

Here's the parabike in action: