Flying experiments attributed to leonardo da vinci?

A prototype of the helicopter (a draw), and the drawing of an experimental conic parachute, that should work today as something like a glider. There might have been other flying experiments sketched by him, and maybe even some were put at work, although I am not acquainted to them. (different kinds of work, such as bridges, were drawn by him too, so you have a lot of work on your way to find the information you want about Leonardo da Vinci in the internet) Go ahead and good luck! Boy, all the best.