Challenger 2 MBT - Technical data and Discussion (Part 1)

5.2KG is much better than 4.3KG

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DU density = 19.07

18.6 = (0.9925 * 19.07) + (0.0075 * x), where x is the density of our mysterious non-du elements.
Solving for x you get -43.6. So the non-DU parts of the L27A1 have negative density/mass. Note these are using the absolute minimum values from that source. Instead of the 99.42% DU they actually observe. Seems legit.

It’s pretty basis maths, so you should try doing it yourself instead of putting numbers blindly into a “black box calculator”. 18.96 is the final projectile density I get.

Edit:
Apparently this is the wrong formula for density. I used a weighted average of the densities.

I actuated expecting to be abit heavier, more like 5.5kg. L26 is also 4.85kg.

Is 5.3 the overall weight?

In WT l26 is 4.3, sad

5.2kg is the weight of the penetrator I assume.

That’s not the formula for density of an alloy though…

The correct formula is:
image

Which using your numbers looks like this:
image

And solves to x = 4.36

If you use 19.0 as the density for Depleted Uranium it solves to x = 4.9
And if you use 19.05 it solves to x = 4.5, which just so happens to be the density of titanium.

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By the way, will you report the issue of 2F plate thickness again?


BSP_59744-JDW-22556
Challenger_3_MBT_Main_Battle_Tank_RBSL_United_Kingdom_004
@DevilO6 @Fireball_2020
CR3 also uses 2F late, right? I think these photos will help us confirm how thick this plate is

Yea, it also uses Gen2 plate

Although we cannot determine the material of this plate, I am very certain that it exceeds 50

no idea

Note it only used the applique in this instance, all other times it seems to not have it.

Well, not like that matters. T-80B got Thermals on one tank for tests. That is why im waiting for the right time to jump on the TISP.

On the train at the moment, so I’ll have to double check later, but I think that’s the formula for % by volume?

So I just used a weighted average. That assumes there is no physical interaction between the alloy components which influences density.

Maybe unfair for me to say it’s basic maths. It’s technically A-Level chemistry.

the actual arithmetic is fairly straight-forward.
the bit thats tricky is actually knowing the equation/or knowing how to derive it.

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So will you report about the L27A1?

Can’t use a weighted average formula.

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No, nothing to report. Things here were about pre production round

Maybe we can let gaijin to give Cr2 the L27