Its not "bladeless". Its "no visible blades" That aside, I do remember a different design that allows for omnidirectional wind capture. A tall funnel structur

Its not "bladeless". Its "no visible blades" That aside, I do remember a different design that allows for omnidirectional wind capture. A tall funnel structure that directs wind from all directions to a turbine below the structure. It seemed like a good idea, and some installations were made. However, I think the efficiency and costs did not work out.