> there has never been, nor will there ever be a functional "helicopter" that looks like Da Vinci's helicopter. No: it has no stabilising rotor. However, there

> there has never been, nor will there ever be a functional "helicopter" that looks like Da Vinci's helicopter. No: it has no stabilising rotor. However, there could be a functional quadcopter using four of Da Vinci's aerial screws: https://www.cnet.com/science/this-drone-flies-using-da-vincis-530-year-old-helicopter-design/ https://www.cnet.com/science/this-drone-flies-using-da-vinci...