(ArtyEngineer,
I thought you especially might like this one.)
So I was browsing around the DTIC.mil/NDIA website and going over past conferences, and found this 25page pdf on cooperative developments the US has been doing with South Afrika on artillery concepts.
What's interesting is the brief mention of ramjet-powered 155mm shells that have far greater range potential than any other rocket-powered or boosted shells currently under consideration for near-term production, and that includes beating DENEL's already impressive VLAP extended range ammunition system.
http://www.dtic.mil/ndia/2004armaments/DayII/SessionII/13Fitchat_South_African_COOP.pdf
Like I said, it's a big one at 25 pages, and the ramjet shell is on pp 24-25.
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