A helicopter is a kind of rotorcraft in which elevate and drive are supplied by one or more engine determined rotors. In difference with fixed-wing aircraft, this permits the helicopter to acquire off and land vertically, to float, and to fly forwards, backwards and tangentially. These qualities enable helicopters to be used in crowded or isolated areas where fixed-wing aircraft would not be capable to take off or land. The ability to resourcefully hover for extensive periods of time enables a helicopter to achieve tasks that fixed-wing aircraft and other types of vertical takeoff and landing aircraft cannot do.
Due to the operating features of the helicopter its capability to takeoff and land vertically, and to hover for extended periods of time, as well as the aircraft's handling possessions under low airspeed conditions it has been selected to perform tasks that were earlier not feasible with other aircraft, or were time- or work-intensive to achieve on the ground. Today, helicopter uses consist of transportation, construction, fire fighting, search and rescue, and military uses.