A helicopter uses one or more powered rotors or rotary wings to fly and maintain directional control. The helicopter has the ability to move in any direction, unlike the plane that moves only forward, and can still (almost) hover in the air.

 

These characteristics make it irreplaceable as a means of air transport in confined spaces where maneuverability is difficult and in remote places where airport construction is not possible.

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The first machines with flapping or rotary wings were thought up in the late 18th century. The first World rotorcraft championships were organised in 1971 in Bückeburg. Since the mid-1980s, they have been held on average every three years.

 

The disciplines on the World championship programme  of FAI especially emphasize the rescue dimension of the helicopter.