Interesting article about a real, historical plan for a heavier-than-air craft someone in the American Civil War South was waorking on.
http://io9.com/the-confederacy-almost-had-a-helicopter-during-the-civi-1603788364
Interesting article about a real, historical plan for a heavier-than-air craft someone in the American Civil War South was waorking on.
http://io9.com/the-confederacy-almost-had-a-helicopter-during-the-civi-1603788364
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