VTOL
VTOL describes fixed-wing aircraft that can lift off vertically. This classification includes only a very few aircraft; helicopters, autogyros; balloons and airships are not normally considered VTOL.
So, strictly speaking, the helicopter definition doesn't fly. But read on and there's some interesting history. The first patented example (1928) of a VTOL apparatus was called the "Flivver". The inventor? Nicola Tesla. Understandable if you're not frantic to know more about this, but, if you're curious, this article is worth a look.
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