William H. Dana

Nov 3, 1930 - May 6, 2014

William Harvey "Bill" Dana was an American aeronautical engineer, U.S. Air Force pilot, NASA test pilot, and astronaut. He was one of twelve pilots who flew the North American X-15, an experimental spaceplane jointly operated by the Air Force and NASA. He was also selected for participation in the X-20 Dyna-Soar program.
On two separate flights, Dana flew the X-15 to an altitude above 50 miles, thereby qualifying as an astronaut according to the United States definition of the boundary of space; however, neither flight exceeded the Kármán line, the internationally accepted boundary of 100 kilometers.
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