贝尔X-1 – 照片和视频

照片库的 贝尔 X-1B, The Bell X-1, designated originally as XS-1, was a joint National Advisory Committee for Aeronautics-U.S. Army Air Forces-U.S. Air Force supersonic research project built by the Bell Aircraft Company. Conceived during 1944 and designed and built during 1945, it achieved a speed of nearly 1,000 miles per hour (1,600 km/h; 870 kn) during 1948. A derivative of this same design, the Bell X-1A, having greater fuel capacity and hence longer rocket burning time, exceeded 1,600 miles per hour (2,600 km/h; 1,400 kn) during 1954. The X-1 was the first manned airplane to exceed the speed of sound in level flight and was the first of the so-called X-planes, a series of American experimental rocket planes designated for testing of new technologies and often kept secret.

源： 贝尔X-1在维基百科上的内容

贝尔X-1是一架开创性的飞机，实现了历史上第一次超音速飞行。它由贝尔飞机公司与国家航空咨询委员会（NACA）和美国陆军航空队（USAAF）合作开发。贝尔X-1由火箭发动机提供动力，该发动机使用液氧和酒精作为推进剂。这架飞机的形状像一颗子弹，机翼很薄，以减少高速时的阻力。贝尔X-1由一架改装的波音B-29超级堡垒轰炸机携带，并在约23，000英尺的高度释放。然后飞行员点燃火箭发动机并爬升到所需的速度和高度。贝尔X-1于1946年12月9日进行了首次动力飞行，由查尔默斯·古德林驾驶。1947 年 10 月 14 日，查克·耶格尔成为第一个在水平飞行中突破音障的人，在 700 英尺处达到每小时 43，000 英里（1.06 马赫）的速度。贝尔X-1证明了超音速飞行是可能的，并为进一步研究和开发更快，更先进的飞机开辟了道路。