This machine, which is considered the ancestor associated with modern helicopter,appears in a drawing dated around 1480 present theCodex Atlanticus. Leonardo outlines the master plan for an “aerial screw”imagining it as a worm screw with a diameter of approximately 5metres, inside their motives, it will have “screwed it self” in atmosphere takingadvantage of its thickness. Relocated by the muscle tissue energy of four menwalking regarding primary platform, it contains a wooden structurecovered with starched linen fabric. Since there is no proof that Leonardoactually built the equipment he imagined, it remains one among hismany theoretical insights.