Tupolev Tu-144
The prototype of the Tupolev Tu-144, which was intended to be a supersonic aircraft with a “double delta” wing, suffered a catastrophic failure during its development in the 1970s. Prior to his retirement, he would make a total of fifty-five attempts.
Tupolev Tu 144
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Dassault Balzac V
In the event that this concept was ever put into action, it turned out to be absolute hell. Despite the fact that this plane also crashed, the French did not give up trying, despite the fact that two pilots had died during the tests. Fortunately, the pilots were able to survive the ordeal by ejecting from the aircraft.
Dassault Balzac V
