Unleash your creativity with our DIY tutorial on crafting an electric helicopter using a plastic bottle and a DC motor! Follow our easy, step-by-step guide to turn ordinary materials into a flying ...
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.
A little over a century ago, the idea of flying would have been laughable to many. Nonetheless, flying is entirely routine for millions today, and much of the reason that planes and helicopters are ...
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