US and Australian scientists test out a new observational green engine over the Aussie outback this week , and it broke Mach 10 . That ’s 10 times the swiftness of sound , or 6,835 miles per hour , to the laymen out there .
It ’s a scramjet , which means it needs to be propelled up to eminent focal ratio with a rocket salad before the engine can take over , in this case an air - breathing ultrasonic combustion engine . Jets of this f number decidedly wo n’t be take over passenger anytime soon , but if and when they do you may expect to get from New York to Tokyo in a little over an hour . Holy crap .
Jet locomotive prove at 10 times speed of sound[Reuters ]
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