JAXA's Mach 5 Engine Test Promises to Revolutionize Tokyo-LA Flights
The Japan Aerospace Exploration Agency (JAXA), in collaboration with Waseda University, has successfully tested a Mach 5 ramjet engine, marking a significant milestone in hypersonic travel. The test, conducted at JAXA's Kakuda Space Center, simulated flight conditions at an altitude of 25 kilometers, achieving stable ramjet combustion. This development could potentially reduce the flight time between Tokyo and Los Angeles from twelve hours to just two. The test vehicle, although only a fraction of the size of a planned passenger aircraft, demonstrated the feasibility of hypersonic combustion, with surface temperatures reaching 1,000°C due to compressed air and friction. This breakthrough positions JAXA as a competitor to SpaceX's point-to-point Starship service and other supersonic initiatives. 
