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1947年10月14日,贝尔X—1试验机完成了人类首次超音速飞行,速度为M1.015.从此航空科学技术开始进人超音速时代,世界各国纷纷研制装备超音速作战飞机.
October 14, 1947, Bell X-1 test machine completed the first human supersonic flight, the speed of M1.015. Since then aviation science and technology began to enter the supersonic era, countries all over the world have developed equipment supersonic combat aircraft.