Photograph courtesy Doug Selsam |
The KiteGen power kite is designed to fly in figure-eight patterns, according to illustrations on the company website.
Another pioneering system that has garnered some attention has been under development since 2005 by Kanata, Canada-based Magenn Power. Its 100-kW device, the Magenn Air Rotor System (MARS), is a helium-filled mini blimp designed to float up to 1,000 feet (305 meters). (A land-based wind turbine of that capacity would be considered among the largest of small wind turbines.)
Wind makes the blimp's cylindrical core rotate around a horizontal axis, which generates electricity. The juice is then sent down the tether, according to the company.
Magenn claims the helium keeps the device especially stable in high-altitude winds, and says it has met U.S. Federal Aviation Administration guidelines for safety. Company marketing materials promote the product as ideal for remote applications like oil rigs and wilderness cabins, although it has not been released yet.
Some are skeptical of the company's claims. Alternative wind turbine designer Doug Selsam says the MARS system "takes the least efficient turbine type known and makes it more expensive and less efficient, by taking it into the air, with the balloon vastly increasing swept area without increasing power."
Magenn did not respond to a request for comment left on the company's Canadian headquarters answering system. The U.S. phone number listed on the company's website is disconnected.
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