SMRTR Science & EngineeringMay 19, 2026Interesting Engineering

Ramjet engine for Mach 5-speeding hypersonic aircraft tested at 1,832°F by Japan

SMRTR summary

Japan's space agency JAXA, working with three major universities, successfully tested a ramjet engine built for Mach 5 flight at temperatures reaching 1,832°F. The aircraft's heat shield kept internal systems running normally, bringing Japan closer to hypersonic planes that could fly Japan-to-U.S. routes in just two hours.

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