{HEAD ~ This invention} relates generally to a variable aperture and {TAIL ~ geometry} ducted fan wind turbine which converges intake air masses allowing use on turbulence inducing, and air input flow increasing adjacent structures, such as commercial and residential buildings 
relates generally to
{ HEAD ~ This invention } relates generally to a variable aperture and { TAIL ~ geometry } ducted fan wind turbine which converges intake air masses allowing use on turbulence inducing , and air input flow increasing adjacent structures , such as commercial and residential buildings
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