Airlander 10, Butt-Shaped Airship Prototype and World's Longest Aircraft, to Be Retired
Hybrid Air Vehicles, the company behind the Airlander 10 airship (the world's longest aircraft and also known as the "flying bum" for its resemblance to a butt), said on Sunday that its current prototype will not be rebuilt but that it plans to build a new generation of airships, the Guardian reported.