[mdlug] OT - IR jamming

Thomas Cameron (Red Hat) tcameron at redhat.com
Thu Feb 21 16:39:10 EST 2008


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Dave Arbogast wrote:
|> For what it's worth, you're conflating explosively-formed projectiles or
|> penetrators with shaped charges which produce a jet of molten copper not
|> a solid, bullet-shaped projectile.
|>
|> The difference shows up best with the utility of the slat armor used on
|> Strykers which detonates the the RPG warhead prematurely thus robbing it
|> of effectiveness but is essentially useless against an EFP.
|>
|> The shaped-charge, in order to be effective, has to detonate within a
|> fairly narrow minimum and maximum distance in order for the copper jet
|> to either form, at the minimum distance, or remain in a solid stream at
|> the maximum distance. EFPs are not so encumbered being effective from
|> substantially greater distances.
|>
|> The shaped-charge you refer too is a good example of the difference. A
|> half inch or so beyond its maximum range and it's ineffective. An EFP is
|> effective from at least tens of yards.
|>
|> That sensitivity to conditions is also how one type of active armor
|> works. The explosive sandwiched between the steel layers of active armor
|> detonates quickly enough to upset the conditions necessary to form a
|> coherent jet of molten copper rendering the munition ineffective.
|> Although I'm not certain, I'd venture a guess that this type of active
|> armor is ineffective against an EFP.
|>
|> If anyone's interested in building an Illudium Q-36 Explosive Space
|> Modulator I've got a neutronium barrel - practically new - that I can
|> contribute to the project. Full disclosure: the anti-matter containment
|> field is a big flaky.
|>
|> Allen
|>
| WOW!  I guess the censorship of our press during this war has been
| effective in confusing me ;-)

LOL - and I was just wondering when the FBI was going to show up at
Allen's door and cart him off to Gitmo.

- --
Thomas Cameron, RHCE, RHCX, CNE, MCSE, MCT
Solutions Architect Team Lead, Central Region
512-241-0774 office / 512-585-5631 cell / 512-857-1345 fax

Red Hat rated #1 in value by CIOs for four years running:
http://www.redhat.com/about/news/prarchive/2007/CIO_Insight_Study.html
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