Laviduce
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Everything posted by Laviduce
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but but why not ? I like to "believe"...
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In summary , how valid are these chinese protection diagrams ?
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How far along are you with your Merkava I and II study ?
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But how valid is this information on the Merkava III ?
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Hello Xoon ! Here are the translations: red - Operational Pressure orange - Control Pressure/Actuators yellow - Pre-control pressure green - Recoil white - N2 white - Air These should be about right.
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Hi Xoon, I do not have all the information you requested but this might be of interest. According to Krapke: For the Leopard 2(A0-A4) the gun laying system or Waffennachführanlage (WNA) is known as H22. It is a electric-hydraulic retarder control eqipped hydrostatic motor where an electric motor powers a coaxial piston pump which pumps the hydraulic fluid out of the reservoir into hydro storage cell. Here is the diagram of the WNA H22:
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we need more !!!!! We need ....https://media.giphy.com/media/wLXo0vTZSM7GU/giphy.gif !!!!!!!
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1) Yes, i simplified the diagrams to show the approximate areas of vulnerability. Here is a more detailed breakdown of the roof area of the model: Overall, i would still consider this roof area to be a weakened zone given the quickly decreasing LOS thickness of the special armor and thinness of the roof plate. The trunnion area follows the same example. I assumed that this zone belongs to the 500+ mm RHAe areas in the diagram. I set this value to 5% of the total surface. 2) Spielberger said the following about the Leopard 2 vs. M
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Leopard 1: Leopard 2K: These images made me believe that the Leopard 2 trunnion interior is "...actually thin air, or cardboard..."
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But how valid is this chart ? Do you think the values really correspond to the actual protection values ?
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If the mantlet is using the same armor makeup as the turret cheeks with the same thickness efficiency we have => mantlet composite array (KE resistance of = ~220 mm) + 25 mm steel+ ~180-230 mm air gap + 25 mm steel = ~270-280 mm KE resistance against APFSDS rounds.
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Thank you very much for the feedback. I will make the changes! In the meantime, could you take a look at this and tell me what you think: The sponson and track areas gave me the greatest problems. Explanation: Sponson (outside->inside): Section around the turret ring: 10 mm steel (angled) + 490 mm Fuel Cell (diesel) + 10 mm steel. Total LOS: 510 mm Section around the heavy side skirts: 50 mm steel (angled) + 490 mm Fuel Cell (diesel)+ 10 mm steel. Total LOS: 550 mm Section around the powerpack: 10 mm steel (angled) + 490
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The mantlet seems to be 420 mm thick. This is followed by the hollow trunnion block giving a total LOS thickness of 680 to 730 mm.
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Update with corrections:
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Yes ! Using the drawings, the forward turret roof comes to about 45 mm at around 7 degrees , whereas the level turret roof comes to about 30 mm. This gives me a LOS thickness of aroudn 350 mm. I will make that change to the diagrams.
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Thank you for the feedback, Militarysta. Using the Hilmes drawings i came to about 30 mm at around 8 degrees from the horizontal. Looking at the Leopard 2K drawings , i see that the plate is 35 mm thick at 8 degrees from the horizontal. I think quite a few things were taken over from those early prototypes and i think this might be one of those features. Given this, i will adjust the estimate for this area to around 215 - 250 mm.
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Hello everyone! i would need some feedback on my latest estimates on the Leopard 2(A0-A4 early): My proposed protection solution could potentially satisfy the plot depicted in the Lindström presentation: As we know, the center plot is of particular interest. It seems to depict the various armor solutions (packages). I used the magenta colored plot line (B-type armor tech?) for my solution:
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Hmmm!!! Just like Fuel Cell B, that surrounds the ammunition , fuel cell A could be a composite array that uses diesel fuel to complement its protective properties. Note: The front hull special armor is supposed to have a mass of 1249 kg!
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Thank you ! But is block A a fuel tank or a special armor block. I treated it as a special armor block(s).
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This is very confusing. I used this diagram and other digrams to generate the front hull module volume. Here it is being described as a (fuel) tank ? This is rather confusing
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Thank you very much for this information. The turret modules seem to be asymmetrical, making one potentially heavier than the other. Anyway, from where did you get this ?
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Thanks! The frontal cross section area of the mantlet is about 0,4 m2 . I set the density of steel to around 8000 kg/m3. Knowing this, the steel block LOS thickness comes to about 197 mm of steel.
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Updated volume model:
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I will look into this! I will also update my Type 90 volume model.
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Leopard 2(A0/A1) Study Update:
