World’s first underwater boron ramjet for hypersonic weapons achieves 90% efficiency
SMRTR summary
China has tested an underwater boron ramjet engine for hypersonic weapons, achieving 90% efficiency in lab tests. The engine operates in air and water, reaching exhaust velocities over Mach 3 and a specific impulse of 4,712 newton-seconds per kilogram - 33% more efficient than SpaceX's Raptor engine. This breakthrough could enable high-speed weapons capable of traveling through multiple environments.
SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.
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