The sound barrier was first broken on Oct. 14, 1947, according to the U.S. Air Force. That's when Capt. Chuck Yeager and the Bell X-1 rocket-propelled aircraft broke the sound barrier.

Supersonic jet dubbed ‘Son of Concorde’ breaks sound barrier for first time with 844 mph flight By Ronny Reyes Published Jan. 28, 2025, 4:45 p.m. ET ...