FORMATOSE

38 minutes ago, Alzoc said:

Thermal shroud

A thermal shroud doesn't have a structural purpose.

2 hours ago, Serge said:

I don’t know the English translation but it’s used to better control the heat bending of the barrel. 

Heatshield ?

Two French VBMR Griffon at the Belgian national day military parade, Brussels, 21 July 2019.

What were the protection requirements again ?

105 mm APFSDS fired from the German smoothbore gun and the MILAN 1 ATGM ?

French 140 mm smoothbore gun firing :

On 6/18/2019 at 11:37 PM, LoooSeR said:

   Su-152 "Taran"

https://btvtinfo.blogspot.com/2019/06/152-120.html

 

  Reveal hidden contents

 

Apparently, its maximum gun elevation didn't exceed +15°, that's too bad, because it would have been perfect as a self-propelled howitzer.

This vehicle is playable in the video game War Thunder but the ammo racks configuration is somewhat different :

On 6/18/2019 at 11:37 PM, LoooSeR said:

   M69 was very serius boomstick by 1960s standarts

Regarding its armor-piercing sub-caliber projectile, was it a 152 mm APDS or APFSDS ? It's not specified.

Featuring the SEPAR kit (SystèmE de Protection EEI pour AMX 10RCR), the weight is around 22-23 t.

12 hours ago, SH_MM said:

Literature hasn't proven to be very accurate regarding protection levels and often relies on exaggerated generalizations -

Admittedly, but Marc Chassillan isn't a mere historian.

12 hours ago, SH_MM said:

if you believed old German books from the 1980s and 1990s, Leopard 2 was invulnerable against Soviet 115 mm rounds and most types of 125 mm APFSDS; but we know reality is quite a bit different.

It depends if you are referring to their 1960s/70s steel penetrators or their 1980s/90s monobloc penetrators.

The former weren't good against multilayer composite armor arrays.

12 hours ago, SH_MM said:

But the British documents are likely refering to a concept/prototype version of the Leclerc, which should be kept in mind.

Unfortunately, this excerpt is undated.

5 hours ago, SH_MM said:

 

 

Looking at the bustle, one-piece ammunition were considered at that time ?

British data about the Leclerc protection level don't reflect what we can find in the two French books dedicated to this MBT.

14 hours ago, Molota_477 said:

Of course from real documents.

Not very old, there're some files varied from 1985 to 1990.

I can't wait to read them.

So, it looks like an old British declassified DEFE document ...but it is not.

3 hours ago, heretic88 said:

Was the L64 similar to M735 or M111 then?

Superior to both of them

4 hours ago, Laviduce said:

 

I do not understand what i should correct. Could you please explain ?  From what i gathered from the  picture, among other things, was that the lower boundary of the special armor bays 1) seems to be level with the hull floor and 2) the lower edge of the front hull is more or less the lower boundary of the special armor bays.

• There should be two pipes connected to the turret roof : one for the air inlet and one for the exhaust outlet (your S1 model features the S2 hot air exhaust pipe).
• The attachment point at  the level of the gun elevation gear should be drastically improved.
• The hull special armor cavity extends downward from the hull front welding line (which doesn't delimit the bottom of the special armor cavity, the suspension recesses are a small clue).
• Regarding protection of the gun shield/mantlet/mount/square frame, there is not enough information available in the public domain to make any conclusion/accurate modelling.

2 hours ago, Laviduce said:

Oh, yes ! I used a high res scan of that image to get my lower boundaries for the front hull inserts among other things.

So, you have to correct your 3D model.

2 hours ago, Wiedzmin said:

The bottom right picture reveals some interesting details.

When the thermal sight of your Bradley is taller than the train station roof :

Place and date unknown.

23 hours ago, Mighty_Zuk said:

A lot of the mass still goes to the back, such as the turret and ammo.

There is still some inbalance favoring the front, but it's not necessarily an issue. It helps in gaining traction over sloped surfaces.

Take a look at the Swedish STRV-103, it had the tendency to nose down after passing an obstacle.

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The sights have indeed changed, but there is no indication yet that the loader's hatch addition is directly related to the 4B model. The 4B model entered service around 2011-2012, long after that hatch was added.

So, which Merkava Mk. 4 model features/doesn't feature the loader's hatch ?

9 hours ago, Mighty_Zuk said:

The different generations of Merkava were certainly evolutions of their predecessors, but clean sheet designs were not lacking.

Mark 3: Clean sheet design drivetrain.

The fuel tanks within the double-bottom of the hull were also removed (air attenuates shock-waves more strongly than liquids) .

9 hours ago, Mighty_Zuk said:

Mark 3: Clean sheet design turret.

I wouldn't say that,

With the exception of the brackets and recesses for the special armor modules, the Merkava Mk. 3 turret is still very similar to the one of the previous models (in particular, the M60A2-style rounded bulges on the sides, above the turret ring).

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Mark 4: Clean sheet design hull.

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for example a new hull to account for the new engine+transmission, and support the new heavier turret.

However, protection-wise, the armor plate separating the the driver from the engine compartment doesn't appear to have changed since the Mk. 1 and the same goes for the fuel tank in front of the transmission.

Of course I agree that the glacis has changed.

4 hours ago, Scav said:

Is there a way to visually differentiate them from each other?

IIRC, the Merkava Mk. 4A has a new commander panoramic sight and lacks of loader hatch.

Back to WW2, does the KV-2 turret traverse system was powered or just hand-cranked ?

Related :

WW2-related question :

Did the ZF AK 7-400 Heavy Duty transmission actually existed ? I've not found any reference in the books of Walter J. Spielberger.

Regarding the length of the L29A1 C3TR :

Source : Service Inquiry CHALLENGER 2 Incident at Castlemartin Ranges, Pembrokeshire 14 Jun 17