What's the difference between a Magenn Cylindrical Rotor and propeller wind mills?
Other things being equal, Magenn Air Rotors are 50% as efficient as the best propeller rotors, in terms of their wind “intercepted area”. For a standard propeller system, this is the circular “swept area” of the propeller, and for a Magenn cylinder, its “wind facing area”. Thus Magenn must have an intercepted area twice as large to produce equivalent output. However, there are other factors that will boost Magenn efficiency such as being able to deploy above ground mechanical turbulence. Magenn cylinders are basically strong, closed structures and therefore can be built in large sizes at low cost — substantially reduced capital cost in comparison to the propeller units.
