Hypersonic speeds are those between Mach 5 and Mach 10, meaning five to ten times the speed of sound, or 3,836 to 7,673 mph (6,173 to 12,346 kph). The U.S. military is working on several programs…
Author: John Clint
John Clint lives and breathes horsepower. At Dax Street, he brings raw passion and deep expertise to his coverage of muscle cars, performance builds, and high-octane engineering. From American legends like the Dodge Hellcat to modern performance machines, John’s writing captures the thrill of speed and the legacy behind the metal.
