The World's First Helicopters
It's hard to imagine a world without helicopters.
They've been there my whole life, flying through the sky with ease.
However, there was, in fact, a time when the helicopter was just a crazy new invention.
Like every great machine, there were a lot of trial and errors a long the way.
This is an awesome video uploaded by Britishpathe showing us these early examples.
Thankfully, the inventors never stopped tweaking the design.