A large VAWT concept where elastic flaps on the sails change their shape according where the wind strike the flaps. The configuration of the flaps combined with elasticity, eliminate noise associated with movable flaps. This design also make manufacturing much simpler than if the flaps where free to rotate.
Below is the video of the Elastic Sail VAWT from the front.
Below is the video of the Elastic Sail VAWT from the above.