This personal helicopter was way ahead of its time. | CNET
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Historical Medallion🎖️ on Instagram: "The early 1920s was a time when the idea of a helicopter was an engineering madness. These were not airplanes, but dangerous design hypotheses embodied in metal and wood. Exposed frames, crude blades, primitive engines — each prototype more resembled a flying birdcage with a propeller, doomed to shake and lurch chaotically. These machines had no stabilization systems. The pilot, sitting just centimeters from the air-beating rotor, became the main "damper" a
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