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Active Protection System (APS) for tanks

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https://www.defense.gov/Newsroom/Contracts/Contract/Article/1940606/



BAE Systems Land and Armaments, San Jose, California, was awarded a $13,688,402 modification (P00108) to contract W56HZV15-C-0099 for active protection system integration and urgent material release in support of the Bradley Fighting Vehicle. Work will be performed in San Jose, California, with an estimated completion date of June 30, 2020. Fiscal 2018 and 2019 research, development, test and evaluation funds in the amount of $13,688,402 were obligated at the time of the award. U.S. Army Contracting Command, Warren, Michigan, is the contracting activity.

 

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34 minutes ago, SH_MM said:

^ budget MUSS

   Yeah, when i first heard about it i expected a few more capabilities. I feel like this system will have problems with laser beam riding ATGMs, but this is just my opinion.

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That last intercept is a long rod.

Last time IMI (as it was at the time) included that capability in a promo vid for Iron Fist was quite a long time ago, cca 2009 IIRC. Pivot to high intensity conflict, anyone?

(It is of course also possible that they only got the thing to actually work reliably in that mode recently, which would explain the absence between the OG dev pitch and the current sales pitch).

I also note that the radar showcased there is quite different from the one theyve been using up to now- I wonder what's behind that change.

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https://breakingdefense.com/2019/10/how-active-protection-systems-knock-down-anti-armor-threats-for-both-legacy-and-future-combat-vehicles/

And just this month, Leonardo DRS and Rafael delivered on time the first Trophy APS to the Army in a hand over that marks the first of several that will ultimately outfit four brigades of tanks.

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https://www.stripes.com/news/europe/army-to-deploy-israeli-made-tank-protection-system-in-europe-next-year-1.604115

 

The Army has received an Israeli-made system that protects tanks from anti-armor missiles and will test it next year for the first time during the “Defender Europe” exercises.



Army units participating in the exercises will “field and conduct equipment training of the Trophy systems,” U.S. Army Europe said in a statement Tuesday.

 

 

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On 10/17/2019 at 2:01 AM, Bronezhilet said:

Nicely shows why it's difficult to intercept APFSDS.

 

Shit's fast yo.

dunno about that, if a computer can intercept a nasty at 800m/s, it can intercept a nasty at 1,600m/s

 

question is, does the intercept reduce said nasty's penetration.  Obviously an ATGM is far more fragile to attack than a solid rod of tungsten/DU etc.

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13 hours ago, Kal said:

dunno about that, if a computer can intercept a nasty at 800m/s, it can intercept a nasty at 1,600m/s

 

question is, does the intercept reduce said nasty's penetration.  Obviously an ATGM is far more fragile to attack than a solid rod of tungsten/DU etc.

Halving the available reaction time and the actual intercept time is pretty huge. Especially since, as you already pointed out, it isn't easy to degrade a penetrator's effectiveness, but it is possible. The most common method (and to be honest, its the only feasible method at the moment) is to introduce yaw in the penetrator by having an explosion push on the stabilising fins. And since the thing is moving at ~1500-1600 m/s, you don't have that much time to actually do so.

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back of napkin cals

 

a 100g cartridge of explodium is about 25mm dia and 185mm long, at 2.30 MJ/kg is about 230KJ

 

An APFSDS might also be 25mm, if we very very crudely approximate the energy at 200mm offset, we get 1/66th of the energy available to induce some yaw, so thats about 3.5KJ.  lets drop it down to 2.5kJ.  This is approximately  5 baseball bat hits.

 

but time left for momentum of yaw to take effect is perhaps 8m distance divided by 1600 m/s, so 1/200th of a second.

 

so, yeah, thats enough to introduce some yaw, not much, but probably enough for 2-4 degrees of yaw.

 

 

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