This photograph, taken during the first flight of the XP-86, shows the 35° wing sweep and the deployed leading edge slats. (U.S. Air Force)
The North American XP-86 made its first flight Oct. 1, 1947. In 1948, the Air Force changed the “P” designation (Pursuit) to “F” (Fighter), and when the aircraft was added to the inventory, it was named the Sabre. (Courtesy photo)