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The Airlander 10 airship is pictured airborne in its hangar during its media launch at Cardington Airfield in Shortstown near Bedford on March 21, 2016.
The Airlander, which was originally developed for the US military, is 300 feet (91 metres) long, according its British maker Hybrid Air Vehicles. The Airlander is essentially three streamlined airship-type bodies merged into one with wings and rotary engines. / AFP / ADRIAN DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
The Airlander 10 airship is pictured airborne in its hangar during its media launch at Cardington Airfield in Shortstown near Bedford on March 21, 2016.
The Airlander, which was originally developed for the US military, is 300 feet (91 metres) long, according its British maker Hybrid Air Vehicles. The Airlander is essentially three streamlined airship-type bodies merged into one with wings and rotary engines. / AFP / ADRIAN DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

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    World's largest aircraft prepares to take off

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World's largest aircraft prepares to take off

Airlander 10, a spectacularly huge, helium-pumped aircraft, is unveiled fully assembled for the first time, in a giant aviation hangar near London.

World's largest aircraft prepares to take off

Airlander 10, a spectacularly huge, helium-pumped aircraft, is unveiled fully assembled for the first time, in a giant aviation hangar near London.