The famous aviator known for breaking the sound barrier is Chuck Yeager. On October 14, 1947, Yeager piloted the Bell X-1, becoming the first person to travel faster than the speed of sound. This historic achievement marked a significant milestone in aviation, challenging the limits of flight and leading to advancements in aircraft design and aerodynamics. Yeager's bravery and skill not only inspired future generations of pilots but also contributed to military and commercial aviation development. His accomplishments established him as an iconic figure in the history of flight and exploration.