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Originally Posted by M21Sniper
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I figure 10 years before a militarily useful prototype is ready, and probably 15 years before it's in service.
I figure it will first appear on the 120mm gun of the Abrams, and then branch out to 155mm land based and naval artillery.
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Half agree, 120 Abrams will be first. The MV is almost fast enough for ScramJet already. Rounds leaving tube at 1650 mps while Mach 5 is around 1655 mps. This will be pretty easy to do.
Next will probably be 5"/62 at 1052 mps. But then the snag come in. 155/39 firing a Super Charge 8 (M203) only hits 827 Have to almost double that for a scramjet.
But it is almost at the range of a RamJet. As are the 5"/54 (808) and 16"/50 (820). And thats using old WW2 propellents for the 16"