He didn't have or build an actual helicopter. It was just a sketch.
No, it was just a sketch.
He designed a helicopter. Or rather: in his sketchbook there is a sketch of something which looks similar to a helicopter and was meant to driven by a man pedaling. and a diving suit
He drew a sketch anyway.
Define "originated". -Does that mean da Vinci's sketch, or the first plans, or the start of actually building one, or the first flight.
I don't know weather he was at war or not but what i know is the first person to sketch airplane was Leonardo da vinci ( yes the painter of monalisa)
Leonardo da Vinci. Experts mean the sketch does not really show an adding machine, but a ratio machine.
Painter Sculptor Arhitect Designer Musician Scientist Mathmetician
maybe a nice sketch is a sketch not sloppy,messy, inappropriate maybe
The Sketch ended in 1959.
A gesture sketch
The Sketch was created in 1893.