A supersonic transport (SST) is a civilian supersonic aircraft designed to transport passengers at speeds greater than the speed of sound. To date, the only SSTs to see regular service have been Concorde and the Tupolev Tu-144. The last passenger flight for the Tu-144 was in June 1978 and it was last flown in 1999 by NASA. Concorde`s last commerc....
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http://en.wikipedia.org/wiki/Supersonic_transport
(from the article `aerospace industry`) The first major cooperative venture of European countries to design and build an aircraft began on November 29, 1962, when Britain and France signed ... ...the vertical and hover capabilities of the helicopter with the speed and efficiency of the airplane. Although environmental restrictions and h...
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http://www.britannica.com/eb/a-z/s/188
a commercial jet airplane that can fly faster than the speed of sound. Abbr.: SST
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https://www.infoplease.com/dictionary/supersonic-transport
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