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Posted

Hi,

How is the efficiency of Arena against top attack ATGMs, like NT-S?

I heard that against ordinary anti-tank weapons it is 0,5

Regards

  • 2 weeks later...
Posted
Hi,

How is the efficiency of Arena against top attack ATGMs, like NT-S?

I heard that against ordinary anti-tank weapons it is 0,5

Regards

 

I'd rate Arena's chances from low to very low since Top Attack missiles come in from sphere not protected by Arena. Overfly Top Attack missiles can probably be intercepted almost as well as normal direct attack missiles.

 

Here : http://armor.kiev.ua/fofanov/Tanks/EQP/arena.html

 

 

you see from picture that Arena most likely cannot intercept high angle TA missiles like Spike/Gill/NTS.

 

OTA missile like BILL 2 probably enters into protective sphere and can be intercepted, see this pic:

 

 

And here you can see in how high angle Spike attacks a tank in lofted launch mode:

 

see :http://www.israeli-weapons.com/weapons/mis.../GillSpike.html

 

 

Compare that to pic about Arena operation and draw your own conclusions....

Posted (edited)

That's Spike, but other top attack missiles sometimes dive in a shallower path, e.g. Javelin.

The other question is whether the effectors can be launched at a sufficient angle, even if the system detects the incoming threat.

 

...and what about AWISS?

Edited by Ssnake
Posted
That's Spike, but other top attack missiles sometimes dive in a shallower path, e.g. Javelin.

The other question is whether the effectors can be launched at a sufficient angle, even if the system detects the incoming threat.

 

...and what about AWISS?

 

When looking at pictures of AWISS-system, I'd say it's definitely designed to engage also high-angle threats.

Posted
That's Spike, but other top attack missiles sometimes dive in a shallower path, e.g. Javelin.

The other question is whether the effectors can be launched at a sufficient angle, even if the system detects the incoming threat.

 

...and what about AWISS?

 

 

I have only seen a couple videos showing Javelin, but I thought it was coming down at a pretty steep angle?

Posted (edited)

According to FM3-22.37 (Fig. 1-27) the Javelin initiates the terminal dive phase (at max range) from 160m flight height and 750m before the anticipated impact point. To me, that's an impact angle of about 12° - not exactly steep. Shorter engagement ranges don't look substantially different in their flight profiles.

Edited by Ssnake
Posted
I have only seen a couple videos showing Javelin, but I thought it was coming down at a pretty steep angle?

 

It is descending at a very steep angle when compared to other forms of anti-armor ordnance. I have seen the same films and had the same impression as yourself regarding how steep the descent is when contrasted with more conventional ammunition or even TOW, Dragon, Sagger (etc) for that matter.

 

Put into better perspective, APFSDS -- even at ranges in excess of 4 and 5Km -- has an angle of fall of only a few "mils". 120mm tank fire HEAT with a range set of 2000m has a descent angle of less than 10-mils. DM18 HEAT has a descent angle of about 17-mils at 2000-m. That's a little less than a degree.

Posted
According to FM3-22.37 (Fig. 1-27) the Javelin initiates the terminal dive phase (at max range) from 160m flight height and 750m before the anticipated impact point. To me, that's an impact angle of about 12° - not exactly steep. Shorter engagement ranges don't look substantially different in their flight profiles.

That would be the impact angle if Javelin instantly changed course from 0deg to 12deg and remained at 12deg for the remaining 750m. I do not know if that is or is not the case (and would appreciate information from anyone who does know), but if Javelin follows an arced path over that 750m then its impact angle would be much steeper than 12deg (its average angle across the arc would be 12deg). Does anyone have firm information about this?

 

-- TTK

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