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Leopard Tank Question


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#21 Stefan Kotsch

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Posted 26 February 2018 - 1528 PM

Wow. That was my very first lightning thought. When I looked at the optics.

 

It's an experimental type on its way to the Leopard 2, but with 105 mm smooth-bore (?) gun (yes, without bore evacuator). Prototype designating PT15 with turret T02?


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#22 Wiedzmin

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Posted 26 February 2018 - 1535 PM

Thord Wedman: Chassies number 7 with turret number 6.

Edited by Wiedzmin, 26 February 2018 - 1535 PM.

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#23 Wiedzmin

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Posted 13 August 2018 - 1551 PM

Uxt1sUo2BOo.jpg
EK4UGe0O5Xk.jpg
P6Kzp8MBxkA.jpg

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#24 Old ROF

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Posted 14 August 2018 - 1459 PM

VxQKVh3.jpg
is L7A2 version of L7A3 without bore evacuator ?


The L7A3 variant was developed with breech modifications to interface with the Leo 1 recoil system rather than the Centurion recoil system. All L7 ordnance variants had an (eccentric) fume extractor (bore evacuator) fitted.
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#25 Interlinked

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Posted 16 August 2018 - 0943 AM

Wiedzmin, which document is that from? Very interesting information.


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#26 Wiedzmin

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Posted 08 September 2018 - 0617 AM

Bundesarchive reports mostly

J1HWZGSXc18.jpg

Leopard 1a3 turret, steel used HZB 301 370-410HB and up to 490 for 12mm plates,roof HZB20 260-300HB
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#27 bojan

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Posted 08 September 2018 - 1206 PM

Note a value for a supposedly solid gun cradle... :)


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#28 Wiedzmin

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Posted 08 September 2018 - 1256 PM

Gun cradle of all leo1 before 1a3 was made from constructional steel(not armor) and it hollow box yes, 1a3 have cradle from armor steel, as 2k, but for leo2av/2a4 I don't have any good info at this moment
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#29 Wiedzmin

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Posted 07 July 2019 - 0509 AM

fQ9Q0Jo.jpg

 

 

 

here what Leopard-2AV(and i think 2A0/4) mantlet armour look like in 1976


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#30 Interlinked

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Posted 08 July 2019 - 1323 PM

What do the numbers and letters signify?


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#31 Wiedzmin

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Posted 12 July 2019 - 0213 AM

thickness

 

260mm from front face of frontal 15mm plate to rear face of rear 20mm plate(225m "pocket" for special armour consisting of 12mm HHA and 4mm bulging plate)

 

"hh" - hohe Härte 

TL - TL spec steel 

"w" i don't know, maybe some german speaking members could help 

Lochblech - perforated sheet


Edited by Wiedzmin, 12 July 2019 - 0218 AM.

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#32 Panzermann

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Posted 12 July 2019 - 1205 PM

thickness

 

260mm from front face of frontal 15mm plate to rear face of rear 20mm plate(225m "pocket" for special armour consisting of 12mm HHA and 4mm bulging plate)

 

"hh" - hohe Härte 

TL - TL spec steel 

"w" i don't know, maybe some german speaking members could help 

Lochblech - perforated sheet

 

With the context of marking high hardness and TL steels and where the plates marked w are, I could imagine the "w" stands for weich, that is soft or mild (steel).


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#33 KV7

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Posted 12 July 2019 - 1233 PM

What is the bulging plate (in olive ?) made from ?


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#34 Wiedzmin

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Posted 13 July 2019 - 0813 AM

VbAtUVl10Wk.jpg

 

1976  Leopard 2AV armour(all from declassified reports) 

 

 

What is the bulging plate (in olive ?) made from ?

mild steel i think, but no data in report

 

 

 

 

With the context of marking high hardness and TL steels and where the plates marked w are, I could imagine the "w" stands for weich, that is soft or mild (steel).

 

maybe, thank you


Edited by Wiedzmin, 13 July 2019 - 0825 AM.

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#35 Rick

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Posted 14 July 2019 - 0550 AM

Bundesarchive reports mostly

J1HWZGSXc18.jpg

Leopard 1a3 turret, steel used HZB 301 370-410HB and up to 490 for 12mm plates,roof HZB20 260-300HB

Why the space between armor plates?


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#36 Rick

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Posted 14 July 2019 - 0552 AM

fQ9Q0Jo.jpg

 

 

 

here what Leopard-2AV(and i think 2A0/4) mantlet armour look like in 1976

Why the diagonal spaced plates?


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#37 DB

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Posted 14 July 2019 - 0642 AM

Penetrators are damaged at interfaces due to compression/release that creates internal shock pulses that exceed the material strength. But I am probably not using the right technical terms here.

The air gaps also give room for the bulging plates to move.
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#38 Przezdzieblo

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Posted 14 July 2019 - 0717 AM

Bulging plates need obliquity. There is little flow of armour material at projectile trajectory if there is no step angle.

Note that the first scheme (Leopard 2 prototype I generation) is oriented vs KE threats (full bore AP, APDS).


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#39 Wiedzmin

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Posted 15 July 2019 - 0127 AM

 

Why the space between armor plates?

 

for example, for protection from 20mm DM43 you don't need thick and heavy 65-70mm plates, you can use 12-35 spaced armor, firts plate damaging/destabilizes core second holds all thats left after first plate


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#40 Colin

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Posted 15 July 2019 - 1139 AM

The performance leap from 100mm to 115mm is impressive with frontal armour penetration leaping from 500m to 3000m. Not good being a Leo 1 crewman 


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