Passing through the Sound Barrier was thought to be impossible in 1947
Yeager in the Bell X-1 Glamorous Glennis did it
2019 much interest in SST and significant opposition
One of the great test pilots flew Glamorous Glennis in 1947 and visions of SST flight exploded among aeronautical engineers and airline planners. The Concorde broke the commercial barrier, but its economic performance broke the model of future supersonic flight.
Here’s a brief review of Yeager’s historical accomplishment and then a collection of past and future SSTs.
October 14 1947
U.S. Air Force Captain Chuck Yeager becomes the first person to fly faster than the speed of sound.
Yeager, born in Myra, West Virginia, in 1923, was a combat fighter during World War II and flew 64 missions over Europe. He shot down 13 German planes and was himself shot down over France, but he escaped capture with the assistance of the French Underground. After the war, he was among several volunteers chosen to test-fly the experimental X-1 rocket plane, built by the Bell Aircraft Company to explore the possibility of supersonic flight.
For years, many aviators believed that man was not meant to fly faster than the speed of sound, theorizing that transonic drag rise would tear any aircraft apart. All that changed on October 14, 1947, when Yeager flew the X-1 over Rogers Dry Lake in Southern California. The X-1 was lifted to an altitude of 25,000 feet by a B-29 aircraft and then released through the bomb bay, rocketing to 40,000 feet and exceeding 662 miles per hour (the sound barrier at that altitude). The rocket plane, nicknamed “Glamorous Glennis” (after Yeager’s wife), was designed with thin, unswept wings and a streamlined fuselage modeled after a .50-caliber bullet.
Because of the secrecy of the project, Bell and Yeager’s achievement was not announced until June 1948. Yeager continued to serve as a test pilot, and in 1953 he flew 1,650 miles per hour in an X-1A rocket plane. He retired from the U.S. Air Force in 1975 with the rank of brigadier general.
Here are some of the past and future SSTs and some of the challenges that remain after 72 years:
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There is a bow wave of SST interest and it is not clear whether those visions will become realities—not so much from a technology standpoint, but political/environmental perspective. Would it shock Yeager how little the SST has wrought?
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