Uncolored etching of the aircraft suggested by Franceso Lana de Terzi (1631-1687), in Prodromo (1670). The four metal globes are evacuated so as to make the craft buoyant. The craft was never constructed and was beyond the technology of the period. Created by Vanessa Nagengast Date Created Source National Air and Space Museum, Smithsonian Institution. Keywords Art Rights and Restrictions Not Researched
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