This device, that will be considered the ancestor linked to contemporary helicopter,appears in a drawing dated around 1480 present theCodex Atlanticus. Leonardo defines the master arrange for an “aerial screw”imagining it as a worm screw with a diameter of around 5metres, of their motives, it offers “screwed it self” in environment takingadvantage of its depth. Relocated by the lean muscle mass power of four menwalking regarding primary platform, it has a wooden structurecovered with starched linen material. Because there is no proof that Leonardoactually built the device he imagined, it stays certainly one of hismany theoretical insights.
