[MarkSheppard]

Thanks for all the work, Mark, I think I'll make extensive use of this!

May I suggest for the future US AFVs which share a common chassis across all lines, like the IFV, SP Artillery, Tank etc; in that you design them so that they all have the same basic protection, perhaps 50mm of Rolled RHA (outer frontal hull), followed by about 650mm of void space then 50mm of Rolled RHA (Inner hull).

And basically the void space is filled with materials of different densities depending on your protection requirements?

E.g, the MBT variant gets 650mm of Chobham Generation IV; while the IFV gets several layers of honeycombed aluminum, while the SPA gets filled with kevlar anti spall layers...