The Bell Aircraft Corporation X-1-1 (#46-062) in flight.
E60-6204A
The Bell Aircraft Corporation X-1-1 (#46-062) in flight. The shock wave pattern in the exhaust plume is visible. The X-1 series aircraft were air-launched from a modified Boeing B-29 or a B-50 Superfortress bombers. Superimposed on this Air Force photo is the “Mach jump” paper tape data record of the first supersonic flight by Air Force Capt. Charles “Chuck” Yeager on 14 October 1947 in this aircraft.1947NASA Photo / USAF photo by Lt. Robert A. Hoover› X-1 Project Description