The Air Force did not ask Chuck Yeager on October 13, 1947, to break the sound barrier the next day. He had been flying the Bell X-1 (which he had named the "Glamorous Glennis") since August and had made 8 previous powered flights. When he actually broke the sound barrier on October 14, it was by accident. The target speed was Mach .97, but at speeds just under Mach 1, a shock wave made the Machmeter read low.
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05/03/2025 alle ore 07:22
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