The Lockheed Martin VH-71
This plane was not a complete disaster, at least not in its potential. Lockheed Martin and Augusta Westland put their brilliant minds together to make this unfeasible wonder during 2002 in America. The Marine Corps were so taken by the Lockheed Martin that they wanted the President to be transported by it! In the end it was its eventual price tag of a crazy $11.2 billion which clipped its wings.
The Bristol 188
The Bristol 188’s development suffered from the kind of development which was completely out of tune with its contemporary standards. The Bell X-1 was created by Chuck Yeager in 1947, inspiring many other people to replicate his model. The English produced a rather shoddy imitation named the Bristol 188, which was sadly riddled with errors in design. Shockingly, its fuel tank would sprout leaks while flying and failed to ever even take flight unless it was speeding along at a ground speed of 300 mph!