Posts by Chris 3 publicly visible posts • joined 1 Feb 2008
"We've got a possible range of nice to nasty of + 52 to – 95"
What you need to do is look at the extremes maximum benefit for minimum outlay and maximum outlay for minimal benefit. That gives us two sets of figures which are -
Good - £110 billion benefit - £30 billion cost = +£80 billion
Bad - £82 billion benefit - £205 billion cost = -£123 billion
The flames coming out the back are actually plasma caused by the intense heating of the slug.
10MJ is tiny, BAE already have a 32MJ railcannon-
http://www.dailytech.com/BAE+Sports+Most+Powerful+Railgun+Ever/article9791.htm
http://www.military.com/features/0,15240,160195,00.html
All you need is 3,000,000 amps to fire it :)
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