An idea originally developed to increase the lift of slow moving aircraft wings and simplify helicopter rotors may soon improve the efficiency of wind turbine rotors and possibly reduce their manufacture costs. The aerodynamic idea of “circulation control” releases compressed air from narrow slots on the trailing edges of wings or hollow blades to change…

An idea originally developed to increase lift in slow moving aircraft wings and simplify helicopter rotors may soon improve the efficiency of wind turbine rotors and possibly reduce their cost of manufacturing. This “circulation control” aerodynamic technology could let wind turbines produce significantly more power than current devices at the same wind speed, 30 to…