Saw some articles on the new type of propeller design. Wonders if someone manage to 3D print them and test it on the tello.
Articles, Toroidal propellers: A noise-killing game changer in air and water, toroidal propellers turn your drones and boats into noiseless machines
Articles, Toroidal propellers: A noise-killing game changer in air and water, toroidal propellers turn your drones and boats into noiseless machines