A Tunisian startup, Tyer Wind, has developed a “wind converter” which is equipped with flapping wings rather than blades.
The action of the wings mimics the motion of hummingbird wings. The company claims that this makes it a highly efficient wind converter.
The video below shows a pre-commercial prototype currently under various open air tests related to power efficiency, aerodynamic behavior, material resistance and stress over the mast. The test model has 1.6 metre wings, a swept area of 3.56 square metres and a rated output of 1 kilowatt.