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The U.S. Air Force Went to Space on the North American X-15
The X-15 is the only conventional aircraft that has ever been flown above the “Karman Line” separating the Earth’s atmosphere ...
The National Interest14d
These 3 American Aircraft Redefined What It Meant to Fly “Fast”
Let’s take a look at a few of the fastest American aircraft ever flown. Operated by both the U.S. Air Force and NASA, the X-15 is the fastest aircraft ever flown. Even today, nearly sixty years ...