The National Interest on MSN
How Were Modern Helicopters Invented?
The idea of the helicopter dates back to the Renaissance—but the contraptions could not be built until the development of modern aerospace engineering during the interwar period.
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Catching Helicopters at Sea: The Ingenious System That Lets Pilots Land on Moving Ships
Landing on a Rolling Deck It may surprise you, but helicopters can safely land on the small decks of ships even when the ...
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