Ramjet-Powered Artillery Moves Beyond Experimental Status

soldier carrying artillery shell
A solider carried a standard 106-lb., 155mm artillery shell during a fires exercise in 2020.
Credit: U.S. Army
A Nammo-designed solid-fuel ramjet inserted into a 155mm artillery shell ignited upon release from a U.S. artillery cannon in December 2019, proving for the first time the feasibility of an indirect fires system with extreme range. Although it was a major technical breakthrough for ramjet propulsion...

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