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Boom’s XB-1 jet breaks sound barrier on first supersonic flight - Boom’s inaugural XB-1 supersonic test flight reached speeds ...
The test flight took place in the same Mojave Desert area in California where Charles "Chuck" Yeager first broke the sound barrier in 1947.
Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...
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