Dealing With EFPs
21st May 2008
Read it.
The EFP is nasty because it can penetrate the armor on just about anything but an M-1 tank. An EFP is a precision weapon, not an ad-hoc assemblage of explosives (like most roadside bombs). Your typical EFP is a cylindrical device, the optimal one often described as similar to a coffee can. But the cylinder metal must be thicker. You fill about 60 percent of the “coffee can” with explosives (C4, also known as plastique will do). Then you insert a detonator on the closed end of the “coffee can” and a concave copper plug that is pushed into the plastic explosive. The tricky part here is that the depth of the concave copper part, and the thickness of the copper, have to be just right. It requires someone expert at math and the chemistry of explosives to make those calculations. You can make a mould for casting the copper plug, but you must make sure you get the thickness just right. The more precisely the copper plug is made, and the EFP assembled, the more armor the device will penetrate, and the more damage it will do inside the target vehicle.
Just in case you were wondering. I know I was.