The science behind how helicopters turn midair is straightforward enough. Most of them usually come with main and tail rotors, which spin to create lift for the craft. This lift can be controlled by ...

Historical references to spinning flying machines go back hundreds of years, with evidence like the 12th-century Chinese twirling kite and Leonardo da Vinci's bizarre airscrew contraption of 1483.

The fundamental design principles behind rotary-wing aircraft date back to the Renaissance, with some of the earliest-known designs belonging to Leonardo da Vinci. Naturally, technology has ...