Main Battle Tanks and Armour Technology

[methos]

The Strv 122 uses exactly the same wedges, only the Leopard 2A7 UrbOb prototype uses different ones. The Strv 122B/Evolution prototype with new AMAP armour uses also different wedges.

 

[Damian]

Any idea what kind of armor type, these new wedges are?

I think that Sovngard assumption it might be composite is rasonable.

 

[Andrei_bt]

During greek Leo-2A6 turrets tests they used M332 APFSDS from Israel. It was very modern in 1990s round -whit long WHA rod, and really good penetration 600-650mm RHA at 2000m. In some vay it was analoge never introduced in to service 3BM42M Lekalyo (the same penetration). Leopard -2A6 turret windstand 18/20 shots (ussaly is given this value). What is important - NERA panels where not attached to the turret so real protection will be slighty bigger propably.

very interesting! Any sourse?

 

[Kunal Biswas]

Interesting ..

 

[Sovngard]

2S25 Sprut-SD with kinds of heavy composite side skirts ?

 

[militarysta]

very interesting! Any sourse?

Well, most sources is non on paper -rather informal. If you want first first source in paper, then it was greek article about armour test from 2006.
I haven't digitalizated version, but resume of this first article is avaible:

- to test greeks used incomplete Leopard-2A6HEL turret (without mounted equipment -only main armour)
- 30 shoots from diffrent weapons where done (in other translate: tank guns)
- one APFSDS penetrate front armour but stuck in cavity for EMES-15 main mehanism
here:

so this round not perforate armour completly and not came in to crew comparment
- next APFSDS penetrate whole armour thickens on EMES-15 side and perforate armour in to crew comparment
- Kraus Maffei Wegmann was obligate to improve armour in that place to pervent sucht cases in future

And this is all in first article about this topic.

In other (later) articles we have more infos:
- it was a "naked" Leopard 2A6 HEL turret (which means that it didn't carry the wedge shaped applique armour normally used)
- Greek defense magazines quoting German officials report that the armor problem of the Greek Leopard-2A6HEL has been solved with the adding of an additional 30-50Kg (unspecified exactly) of armor components in the space between the cavity of the gunners sights, without affecting the perfrmance of the targetting sights or the Tank.

 

[Damian]

2S25 Sprut-SD with kinds of heavy composite side skirts ?

No, these modules seems to be 4S24 ERA.

 

[Kunal Biswas]

ERA box with 4S24 tiles (left) as compared to the earlier ERA box (designed in 2000) with 4S20 tiles (right).

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From its size, It can be something new and not anyone of the above..

4S24 tiles

 

[Damian]

ERA box with 4S24 tiles (left) as compared to the earlier ERA box (designed in 2000) with 4S20 tiles (right).

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From its size, It can be something new and not anyone of the above..

ERA cassettes or modules can differ in size but can contain exactly the same reactive element. Your making wrong assumption.

 

[Sovngard]

ERA box with 4S24 tiles (left) as compared to the earlier ERA box (designed in 2000) with 4S20 tiles (right).

Okay, thanks :thumb:

 

[Kunal Biswas]

In that case there is a question why so ?,

When there is no issue mounting the existing once, Why for one platform this radical change has been done ..

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There are many assumptions can be drawn but hard to call facts, Unless there are solid logic to push the claim into fact..

ERA cassettes or modules can differ in size but can contain exactly the same reactive element. Your making wrong assumption.

 

[Damian]

In that case there is a question why so ?,

When there is no issue mounting the existing once, Why for one platform this radical change has been done ..

To better fit a different hull, or in case of 4S24, for weight reasons. 4S24 was designed such way, that despite increased weight, vehicle can still have it's original amphibious capabilities.

2S25 use a different hull than BMP-3, which means that ERA modules might have a nececity for a different size to improve vehicles displacement in water.

 

[Sovngard]

To better fit a different hull, or in case of 4S24, for weight reasons. 4S24 was designed such way, that despite increased weight, vehicle can still have it's original amphibious capabilities.

2S25 use a different hull than BMP-3, which means that ERA modules might have a nececity for a different size to improve vehicles displacement in water.

What is the effectiveness of such ERA blocks compared to the more common Kontakt-1 ?

Their size does not imply that they may be hollow ...to improve the buoyancy of the overloaded AFV ?

 

[The Last Stand]

What is the effectiveness of such ERA blocks compared to the more common Kontakt-1 ?

Their size does not imply that they may be hollow ...to improve the buoyancy of the overloaded AFV ?

Kontackt-1 is a First Gen ERA, very old and has low effectiveness. 4S23 Kontackt-5 and 4S24 Relikt are more modern ERA, which include better shaping, materials and design to get more effectiveness.

Estimating is probably a dream, but K-5 should be 30-40% more effective than K-1 and Relikt should be better.

 

[Kunal Biswas]

These are multi layered ERA, The ERA block contain many layers of dynamic protection also have more explosive, These are fire resistance too and have ability to take multiple hits from low / med caliber such as 30mm shells and RPG hits ..

You and other may find this interesting to read >>

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In Indian context, I hope we import and license produce this ..

Kontackt-1 is a First Gen ERA, very old and has low effectiveness. 4S23 Kontackt-5 and 4S24 Relikt are more modern ERA, which include better shaping, materials and design to get more effectiveness..

 

[Damian]

Kontackt-1 is a First Gen ERA, very old and has low effectiveness. 4S23 Kontackt-5 and 4S24 Relikt are more modern ERA, which include better shaping, materials and design to get more effectiveness.

Estimating is probably a dream, but K-5 should be 30-40% more effective than K-1 and Relikt should be better.

You confused designations.

"Kontakt-5" use 4S22 reactive elements, "Relikt" use 4S23 reactive elements, "Kontakt-1" use 4S20 reactive elements, 4S24 are new reactive elements for lightweight ERA (not heavy universal like "Kontakt-5" and "Relikt").

 

[Andrei_bt]

These are multi layered ERA, The ERA block contain many layers of dynamic protection also have more explosive, These are fire resistance too and have ability to take multiple hits from low / med caliber such as 30mm shells and RPG hits ..

Yes, very good for India to have protection against only ancient PG-9 and PG-7 )))))))))

 

[Andrei_bt]

Interesting ..

PShoped ))))

 

[Kunal Biswas]

Source ?

PShoped ))))

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Ever got hit by molten heat wave ?

Yes, very good for India to have protection against only ancient PG-9 and PG-7 )))))))))

 

[Damian]

Ever got hit by molten heat wave ?

Shaped charge jet is not molten. It is deformed and propelled by explosion metal which perforate armor by use of pressure (somewhat similiar to kinetic energy penetration) not temperature by molting armor.