Answer:
Aerial Screw (Helicopter) by Leonardo Da Vinci.
Explanation:
Dozens of inventions are attributed to Leonardo, of which few were carried out. Among his many inventions, the aerial screw stands out. This was a great innovation that has served as a starting point for the realization of other instruments. The aerial screw was devised in 1486 and is considered the forerunner of the modern helicopter. The instrument consisted of a circular base plate, with an axis crossed by a screw about 10 meters in diameter, made with a structure of reeds, covered in fabric, starched linen, and reinforced by a metallic edge.
