Helicopters

thumb|VH-SUF, a McDermott Aviation Bell 214 taking off after refuelling. thumb|Cabin view looking out from a helicopter in flight thumb|Bell 412|Bell 412CF looking forward from the tail, showing its twin turbine engine exhausts thumb|1956 Hiller YROE-1 one-man "Rotorcycle" being tested at NASA Ames Research Center A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or

thumb|A heliport at Niagara Falls, Ontario|Niagara Falls, [[Ontario, Canada]] thumb|The Hernesaari Heliport in [[Hernesaari, Helsinki, Finland]] thumb|Heliport of Uniklinikum Aachen, [[North Rhine-Westphalia, Germany]] thumb|Heliport in the mountains of Loen, Norway|Loen, [[Norway]]

helicopter designed for multiple roles interchangeably

thumb|250px|Modern Japanese taketombo bamboo-copters; wooden type with winding thread (left); plastic type (right) thumb|250px|A decorated Japanese taketombo propeller The bamboo-copter, also known as the bamboo dragonfly or Chinese top (Chinese zhuqingting (竹蜻蜓), Japanese taketonbo ), is a toy helicopter rotor that flies upward when its shaft is rapidly spun. This helicopter-like top originated in Jin dynasty China around 320 AD, and was the object of early experiments by English engineer George Cayley, the inventor of modern aeronautics.

helicopter used to lift heavy or large loads

design for a protoytpe helicopter by Leonardo da Vinci

helicopter crew responsible for operating flexible-mount guns fired from the main cabin

a helicopter system designed to be worn on a person's back

1970s German battlefield reconaissance system

temporary advanced airbase

Wikimedia list article

1965 experimental helicopter model by Cicaré

American helicopter designer (1924-2006)