"Da Vinci's screw.Until time has passed, still nothing happened until 1480, when the early era of Leonardo da Vinci has made mechanical design that can be described as "air screw", The first recorded evidence of progression in the story of flying in a vertical. From his record if he says have created a small flying models, but it does not have any indication for the requirement to have to stop the rotor (helicopter's main rotor). From making the craft rotate to it. [7] [8] (which in the modern era, this helicopter is tail rotor section is added for the resistance effect of pushing the torque due to the strong reactions caused by reverse rotation due to the rotation of the blades into the rotor). As scientific knowledge increased and became more accepted. Humans still monitor new concepts In the matter of the vertical plane is located. Many of these mechanisms and a model in the subsequent period of time later, seemingly very closely similar to the plane that is made from bamboo, with rotating wings that fly above, than screw the air of da Vinci.
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