De Havilland Comet
There are many great things to say about the De Havilland Comet, but there are also many negative things that are worse. It was the leading plane for examples of a poorly created aircraft. The engineers were trying to change their design but they could not avoid fatal accidents.
The Devil’s Hoverbike
Hoverboards were created in the 1950s and were reintroduced today! Back then, the U.S. military created a one-man chopper plane so that the U.S. Infantry could hover into battle. This may sound cool, but really these powerful machines would launch you into the air and be placed around four inches from your feet, where you had to balance.