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Posted on Sun, June 5, 2016
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Because no jet engine at that time was powerful enough, the Bell X-1 used a four-chamber XLR-11 rocket engine than produced 26,500 newtons (6,000 lb) of static thrust.

  • Bell X-1 Engines

    The Bell X-1 used a 6,000-pound-thrust, liquid-propellant rocket engine from Reaction Motors, Inc. also known as Black Betsy. On October 14, 1947, flying the Bell X-1, Capt. Charles 'Chuck’ Yeager, USAF, became the first pilot to fly faster than sound.

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