![]() The XS-1 was first discussed in December 1944. A variable-incidence tail appeared to be the most promising solution and having already decided on it for the M.52, the Miles and the Royal Aircraft Establishment (RAE) tests supported this. Bell was battling the problem of pitch control due to "blanking" the elevators. Unknown to Miles, Bell had already started construction of a rocket-powered supersonic design of their own, with a conventional horizontal tail. reneged on the agreement and no data was forthcoming in return. Miles' Chief Aerodynamicist Dennis Bancroft stated that Bell Aircraft personnel visited Miles later in 1944, and were given access to the drawings and research on the M.52, but the U.S. Later that year, the Air Ministry signed an agreement with the United States to exchange high-speed research and data. The project resulted in the development of the prototype turbojet-powered Miles M.52, designed to reach 1,000 miles per hour (870 kn 1,600 km/h) (over twice the existing airspeed record) in level flight, and to climb to an altitude of 36,000 ft (11 km) in 1 min and 30 sec.īy 1944, design of the M.52 was 90% complete and Miles was told to go ahead with the construction of three prototypes. In 1942, the United Kingdom's Ministry of Aviation began a top secret project with Miles Aircraft to develop the world's first aircraft capable of breaking the sound barrier. The X-1 aircraft #46-062, nicknamed Glamorous Glennis and flown by Chuck Yeager, was the first piloted airplane to exceed the speed of sound in level flight and was the first of the X-planes, a series of American experimental rocket planes (and non-rocket planes) designed for testing new technologies.ĭesign and development Parallel development 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) in 1954. Conceived during 1944 and designed and built in 1945, it achieved a speed of nearly 1,000 miles per hour (1,600 km/h 870 kn) in 1948. Air Force supersonic research project built by Bell Aircraft. The Bell X-1 ( Bell Model 44) is a rocket engine–powered aircraft, designated originally as the XS-1, and was a joint National Advisory Committee for Aeronautics– U.S. ![]() National Advisory Committee for Aeronautics ![]()
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