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Events on Tuesday 14 October 1947 2
1947Chuck Yeager breaks the sound barrierBell X-1, Mojave DesertFlying the rocket-powered Bell X-1 Glamorous Glennis, Chuck Yeager exceeds Mach 1 in level flight, opening the way to supersonic fighters.
1947Sound barrier brokenChuck Yeager flies the Bell X-1 faster than soundOn 14 October 1947, US Air Force Captain Chuck Yeager flew the rocket-powered Bell X-1 Glamorous Glennis past Mach 1 over the Mojave Desert. It was the first confirmed supersonic flight in level flight. The achievement was kept classified for several months.