
Flying from Japan to the US in 2 hours: Japan Space Agency tests Mach 5 engine
Conceptual image of a hypersonic passenger plane. Credit: JAXA The Japanese Space Agency (Japan Aerospace Exploration Agencyalso known as JAXA) successfully conducted a ground combustion test for the Japan’s first hypersonic experimental aircraftcapable of simulating flight conditions at Mach 5 (five times the speed of sound), reaching approx 5,400 km/h and reaching an altitude of approx 100km. To be clear, ...








