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The Bell X-1 is a famous US jet aircraft. It was the first aircraft in the world that reach a speed of Mach 1 in level flight. It was the October 14th 1947. Its pilot was Chuck Yeager.

X-1
Bell X-1 46-062 (in flight).jpg
X-1 #46-062, nicknamed Glamorous Glennis.
Role Experimental rocket plane
National origin United States
Manufacturer Bell Aircraft
First flight 19 January 1946
Status Retired
Primary users United States Air Force
National Advisory Committee for Aeronautics
Number built 4