German engineering firm Festo has created this flying manta ray. Dubbed the Air_ray, it’s a balloon made of an aluminum-vaporised “PET foil”. Inflated with helium, the Air_ray’s propulsion ...
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A Brief History of the Goodyear Blimp, Which Celebrates Its 100th Anniversary This YearThe helium-filled blimp’s actual birthday isn’t until ... In May 1937, the rigid German airship was landing in New Jersey after a commercial transatlantic crossing when it burst into flames.
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