 The "Dash 80" took less than two years from project launch in 1952 to rollout on May 14, 1954, then first flew on July 15, 1954.It was powered by the Pratt & Whitney JT3C turbojet engine, the civilian version of the J57 used on many military aircraft, including the F-100 Super Sabre fighter and the B-52 bomber.The prototype was a proof-of-concept aircraft for both military and civilian use.