one million Jules of energy isn’t really a lot in this context. If we take what they say in the video mach 3 and 1MJ, with (m*v^2)/2=E we get to the point where the dart weighs a total of ~1.89kg. The dart isn’t made for armor penetration as it is also filled with electronics and explosives which gives it WAY less structural integrity than a APFSDS shell.
So compare that to a APFSDS shell, lets say DM33 that weighs 4.3kg and moves at roughly mach 5 which gives it a kinetic energy of slightly over 6.3 million Jules. and that is also designed for armor penetration and is Solid Tungsten.
So a starstreak dart has less than 1/6 the energy and likely less than 1/5 the overall density and as such way less structural integrity.
So if we then just assume that those factors result in 1/30 the amount of penetration capabilities (its likely even going top be less than that due to how armor is designed) and use the 0m values of the DM33 of 496mm penetration we get 496/30=~16.5mm of penetration. lets give it the benefit of the doubt and increase the average density as well as a bit of extra speed that would land us at 20mm penetration.
These calculations are most likely not correct but i just wanted to show how much those things can effect penetration values.
compare the changed speed, that’s likely your answer to the changed pen values.
and as the video you sent med stated; mach 3 which is ~1029~m/s so even slower than what the game currently uses.
We both know Gaijin don’t do energy calculations for weapon systems they put it into the Jacob de Marre formula. Pretty disingenuous to present this as the case for discussion.
Comparing a full size APFSDS dart is also questionable perhaps an APFSDS from a 25mm autocannon would have been a better example?
What data do we use to allow a Pantsir missile to penetrate that much armour, Or a Roland the missile has fragmentation warhead designed to shoot down aircraft and it also has electronics to lower it’s density.
On one hand we have a system designed for this purpose on the other hand we have Gaijin placating Russia and Germany allowing a Roland and Pantsir to destroy tanks.
Which is a ridiculous way to model an air defence missile.
it should have less penetration as it doesn’t have a penetrator. It is not an HE weapon
It explodes in a cloud of shrapnel it has a continuous rod warhead
All that energy would be dissipated vertically along the structure of what it hits directly
Just as a reference here is the penetration of a US 105mm HE shell
And here is a current NATO 155mm shell Gaijin would have us believe a Pantsir air defence missile has the same penetration and damage as a 155mm HE shell.
They weren’t ment to show any thing else than how big of a difference speed and density can make for penetration.
They use Jacob de Marre for AP/APC/APBC/APCBC shells. for APFSDS they use the Lanz-Odermatt formula. but the Lanz-Odermatt formula wont work for anything with a density lower than like 16 point something g/cm^3 .
and i don’t think any of those can be used for the starstreak. It has to low density for the Lanz-Odermatt and the Jacob de Marre assumes uniform solid armor as well as disregards density and length of the shell.
I don’t really think it can be compared to any sort of penetrating shell to any reasonable extent as even if we just take straight up numbers they are going to be way to high for the starstreak as it isn’t of uniform density and is full of electronics and explosives which would make just crumble to pieces against any modern layered armor. Again, the calculations above was just to show how much speed/density can affect things.
Now i know Wikipedia isn’t a source but i don’t have the energy to search for better onesso… yeah.
If we look at those numbers they write that each dart weighs 0.9kg and 450g of that is just explosives. that means 0.45kg of metal at roughly 1100m/s , metal that isn’t densely packed (https://youtu.be/2w1LPOPeM-Y?si=kDapxO8-qrK-ljim&t=69) and where a lot of it explodes out to the sides instead of going into the armor. lets be super generous and say that 0.38kg metal remains to make it easy to compare to something like the 35mm APDS shell of the CV9035DK which weighs 0.38kg and travel at 1400m/s.
so using the mv^2/2=E again we get 372kJ for the APDS and 230kJ for the star streak with the speed being the only difference (even if there is going to be A lot more than that affecting it). That means only 62% of the energy and if we just use straight numbers (which, again, are going to give us way to high pen-numbers) we get 127mm0.62=~79mm penetration. And that’s being hugely generous with many things.
You are comparing the wrong things. the HE shells penetrates with the explosive mass, not the speed/mass of the shell. The Pantsir missile has close to the same amount of TNT equivalent as the 155mm HE shell.
The starstreak has like less than a fifth the amount of TNT equivalent of both.
Surely we have to consider how the fuse and projectile functions. A 155mm HE shell is designed
To explode.
An airdefence missile yes Pantsir shot into the air and if it failed to detonate and fell back to earth would cause damage. That is very different from being shot at a tank. And penetrating/over penetrating.
I’m not saying Starstreak should be able to destroy tanks but neither should Pantsir or Roland
Sure, but it’s still ~8.5kg of TNT equivalent explosives that overpressures tanks. the deliver method matters little when it’s the amount of explosives that are ment to create the primary damage in both cases.
Whilst the star streak has 1.5kg of TNT equivalent explosives.
The other round is an HE round, an air defence missile is very different.
155mm HE shell is designed to focus it’s energy outwards they are not designed to dig into the ground. I’m sure I read 80% of the energy is forced out of the sides.
Pantsir, Roland and many other air defence missile are designed to explode spherically, very similar to how the APHE acts in game they use packed rods together when the fuse is triggered the warhead detonates and forces the shrapnel/rods outwards in a spherical pattern. I question the efficacy of slamming one into the side of an armoured tank.
There’s a number of issues around how Gaijin handles British vehicles. All of the vehicles using the FV101 hull should be more maneuverable and quicker then they are in game. All the Cromwell and Churchill tanks should be better at climbing. The Fox saw opperation with a pulse Doppler radar.
The Chally 3 TD was tested with the Perkins-Condor 1500HP engine, so why not in game?
You claim what they wouldnt do for historic reasons, but the truth is that the Snail balances things to the market and does play favourites
