The revolutionary plane called A2 will fly at a top speed of 3,400mph and should be able to carry 300 passengers. To reach Mach 3 the plane initially generates thrust through engines similar to those used in conventional jet aircraft. Beyond Mach 3, the super-heated air is pre-cooled before it enters the turbines, preventing the engines from melting. The plane has a minimal carbon footprint because it is fueled by liquid hydrogen, producing only water vapor and nitrous oxide as exhaust.
The A2 will cruise at an altitude of 100,000ft. A ticket from Europe to Australia is estimated to cost around $4000.
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