éolienne volante coupole #catchthewind

thingiverse

Manufacturers strive to build wind turbines as tall as possible, but it's impossible to construct one that reaches an astonishing 2000 meters to harness the wind effectively. Inspired by the breakdancing movement "coupole," this innovative wind turbine can rotate its 12 blades in a dynamic motion, alternating between a windmill and propeller design. As a result, this remarkable device no longer requires a tower, allowing it to soar through the air and capture powerful, consistent winds at high altitudes. Two rails ensure smooth movement in two axes of rotation, while an internal rail enables the blade to adjust its angle of attack. The key to this revolutionary wind turbine lies in the subtle difference between lift coefficient and drag coefficient. To achieve optimal performance, I selected an EPP 591 profile for the blade (referenced on airfoiltools.com), which boasts a superior ratio. To minimize drag, we need to reduce the lift surface proportionally to its length while maintaining an elliptical variation of angle attack. To counteract the natural increase in speed with length, I implemented an elliptical lift variation along the blade's length, ensuring a consistent and efficient energy harvesting experience. Additionally, I designed an extrusion in the middle section for easy integration of a ball bearing.