I fly stunt kites and power kites, and what is not immediately apparent to someone who doesn't is that the movement of the kite itself will generate apparent wi

I fly stunt kites and power kites, and what is not immediately apparent to someone who doesn't is that the movement of the kite itself will generate apparent wind (and lift) on the sail/airfoil. Flying in a circle or a figure eight pattern will add a lot of "pull" on the tether. Ie. the load factor of a moving kite is far greater than a stationary kite or propeller. Here's another kite related technology that uses this to their advantage, they have built a giant computer controlled power kite that is used to power cargo ships (they claim 50% fuel savings in favorable conditions). They're also prototyping for electrical power generation. http://www.skysails.info/english/ http://www.skysails.info/english/