First helicopter

For those who adore the drawings Italian inventor Leonardo Da Vinci mad, here is the first helicopter 3D model. Some experts say the first helicopter 3D model was inspired by these very drawings. However, the 3D first helicopter has something in common with a toy with a rotary-wing that could lift and fly and proved the principle of helicopter flight. But here we are to mention the name of Igor Sikorsky who is considered to be the "father" of helicopters since this first helicopter 3D appears to be the one he created.