helicopter

A helicopter is a type of rotorcraft which uses rotors on the top to lift and move. 

 

This allows the helicopter to take off and land vertically, to hover, and to fly forwards and backwards. These attributes allow helicopters to be used in congested or isolated areas where other aircraft cannot perform.

In the early 1480s, Italian artist and designer Leonardo da Vinci created a design for a machine that he called an "aerial screw", however the first operational helicopter wasn't built until 1936.