The U.S. has awarded Airbus the patent for its Mach 4.5 speed passenger plane, which can reduce a typical 11-hour flight to three hours. More impressive than its speed is the plane's no-noise feature, observers say.
The U.S. has awarded Airbus the patent for its Mach 4.5 speed passenger plane, which can reduce a typical 11-hour flight to three hours. More impressive than its speed is the plane's no-noise feature, observers say.
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