NASA captures XB-1’s supersonic shockwave
But while the successful test flight of XB-1 shows that supersonic flight without sonic booms is technically feasible, the ...
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Daily Express US on MSN'Son of Concorde' breaks sound barrier moving closer to 90-minute transatlantic flightThe Son of Concorde, an XB-1 jet, has reportedly broken the sound barrier, making it one step closer to an astonishing feat.
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