A helicopter is a vehicle which can fly in the air.
It is different from the aeroplane.
It does not have wings but has two or more blades on top.
The rotors on the top rotate very fast.
It lifts in air because of its rotors.
It is able to move in any direction, forward or back, up or down.
It can remain still while in air.
Hovering is the most challenging part of flying a helicopter.
It is also used to carry loads connected to long cables or slings is called an aerial crane.
It is also used as air ambulances at times of emergency.