"Force Field" to defeat RPGs - tell me more

Discussion in 'The Intelligence Cell' started by Stonker, Jun 17, 2007.

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  1. My civvy brother showed me this (from last year). Seems IDF were developing somethin similar. Can't find anything more recent.

    OPSEC considered - can anybody out there tell us more?

  2. Yep... lovely system that works as advertised with one major hitch. Friendly dismounts tend to get shredded if they happen to be between the vehicle and the incoming ATGM/RPG...
  3. I heard the Jedi have a similiar force field/ project going on led by Luke SkyWalker and his fellow Jedi Knights..
  4. Surely friendly dismounts would get shredded if the RPG/ATGM hit the vehicle anyway?

  5. Actually, I remember reading something about this ages ago..

    I suspect this article from the Telegraph by 'Michael Smith, Defence Correspondent' may shed some light.


    I wonder if its the same 'Mick Smith' that you swap eyesight posts with?

  6. Serpently is. C'mere Rover - bring me that white stick . . . . ow!! Who put that chair in the way. :?
  7. Leaving 'blind o'Reilly' to find the glasses he uses to find his glasses, the report by Mick Smith is dated 2002. This suggests there was some other major 'snag' to this system.......
  8. Yes - a determined refusal to fund it, no doubt
  9. Think along the lines of crew dismounted to patrol on foot ahead of/alongside the vehicle, in order to detect roadside IEDs/EFPs.

    I think that might be the kind of scenario Khyros had in mind. (confirm, Khyros?)

    What were you thinking: something like "Doesn't matter whether you fry inside or al fresco"?
  10. Firstly, I'm no electrician and I may be asking a stupid question, but I was struck by this part of Mick Smiths article:
    When the warhead fires its jet of molten copper, it penetrates both the outer plate and the insulation of the inner plate. This makes a connection and thousands of amps of electricity vaporises most of the molten copper. The rest of the copper is dispersed harmlessly against the vehicle's hull.
    I assume they tested this without a crew in the tank.
    According to this website http://van.physics.uiuc.edu/qa/listing.php?id=1335 the amount required to kill a human being is 0.07 amps..So, how do they ensure the crew of the tank aren't electrocuted - especially as there is molten copper(an excellent conductor of electricity)flying about?
  11. I'm guessing that mick is no technologist.

    I suspect wot happens is that this thing detects incoming, and then generates an electromagentic pulse (like yr mobile phone making yr car radfio go dzz-dzz) that is strong eneough to actuate the detonator, so the projectile detonates before it makes contact with its intended target.

    Shaped charges are ineffective against armour unless they detonate within a avery narrowly defined standoff distance, thereby focussing their explosive energies to best effect (think in terms of burning paper with a magnifying lens, on a sunny day - only works with the lens at the right distance.) On t'other hand, the explosion of a shaped charge is effective against personnel in the open, hence Khyros comments earlier.

    Haven't yet figure out how/if the system I'm imagingin might function in order to neutralise/minimise EFP attacks, which by deifinintion seem to be effective over a less narrowly limited range.

    This is guesswork, however - I'll happily have my deductions corrected/adjusted by others more informed than this ex-Grunt.
  12. The Mick Smith article concerns 'electric armour', the subject of extensive research by Dstl (and others). Electric armour essentially works by 'shorting out' the jet of a HEAT warhead, and part of the whole FRES work package has included a study to demonstrate the ease of integration of such a system.

    The original 'Trophy' article refers to an Israeli hard-kill DAS - i.e. a system designed to detect and destroy incoming warheads before they even make contact with the vehicle.
  13. So - similar but different - and not yet in the field (or even close?)
  14. Surely the theory (in the 'electric armour' article) is that the charge raises the temperature of the copper jet to such a point that it becomes ineffective as its' kinetic energy is dispersed by expansion? It would certainly have to do that very quickly, though, so the amp reading would have to be on the high side. Wouldn't have any effect on any other type of attack, though, unless you count the barbecue'd individuals with their suicide vests.