Leopard 2 uses perforated armour plates with glass or ceramic reinforced polymer in the holes. Polymer was replaced by tungsten with A5 armor upgrade The holes are sized and placed so that a penetrator hits a part with low and a part with high density. This causes the penetrator to bend or wander of similar to a drill in objects with mixed hardness. To prevent the plugs from simply being pushed out of the holes a polymer plate is placed between each plate Backstop plate is actually 2 plates with a layer of polymer between because that allows the softer back plate to absorb some impact forces to prevent shattering of the harder front plate
are the wehraboos desperate? The armor of the Leopard was not changed, it remained the same only armor was added(arrowhead) this is a big problem today (actually for 20 years) because the Leopard was never modular (like the AMX-52 Leclerc for example) each Upgarde is extremely expensive and time-consuming so Hans..................your tank suck
Wehraboos? Go bugger yourself with a catus. Last time I checked, the Third Reich was dead. And yes, the armor of the A5 and onwards was significantly improved. Maybe not being such a dick would help?
Dear Viewers, the simulation is based on assumptions taken from references it does not replicate the actual scenario (as most of armor details are classified). Please comment below the changes required further, we will update that in next part of the simulation, thanks !
I eonder why does the rod deflect downwards so much, the force exerted on the plate is down, so it should bounce upwards if at all (APFSDS dont reqlly get defelected/bent unless in extreme angles) Also the NERA plates should get caved in, feeding the front plate into the penetrator, and then bounce back, feeding the back plate. That is what makes RA so effective, it makes projectiles go through way more armor than they actually should. The more spaced and angled, the more pronounced the effect is...
This kind of Reminder for Simulation Channel is so brilliant honest and professional.👏 Dejmian Xyz look shit they just show slab of armor you didn't know what part is that. They just put it in thumbnail just to assume lol
The main role that these wedges have is to change the path of the incoming Projectile. It penetrates the wedge and then starte so change it’s flight path. It then hits the main armory at a slight angle. That’s wha makes the turret so hard to penetrate. And that’s the reason the T14 is one of the only tanks that (supposedly) can penetrate the turret. Because the APFSDS dart is long enough that the start and the end of the dart both stay “connected” to the Armor. That way the wedge is unable to change the incoming angle that the dart has.
@@izaicslinux6961 No, it's a physical limitation of the length of the penetrator, the penetrator has to be long enough that the tip begins it's penetration of the composite armor before the tail leaves the arrow head wedge. Currently there are no projectiles long enough to circumvent this destabilization.
That part is probably the most accurate part of this simulation… the simulation is unlikely to fail when the armor configuration is just a sloped plate. The part where this simulation is incomplete is the composite armor material. Apfsds is unlikely to be that affected by angles. It may bend a little, but turning 90 degrees is nonsense. In order to make it bend more, they probably used other materials for the wedge, which is not shown in the simulation.
@@HunterYangBird im no expert on this and i may be wrong, but as far as im aware there is a layer of rubber sandwiched inside the armour between two plates, when hit this will cause the back plate to deform somewhat, this deformed plate destabilizes and damages the projectile prior to it hitting the main armor, not enough to turn it anywhere near 90 degrees but even a 3 or 5 degree rotation can have surprising effects on a long rod projectiles ability to penetrate armor.
My understanding of the space between the initial plate and the subsequent armour is intended to allow the impact of the initial penetration to destabilise the projectile to such an extent that it's energy is not so focussed when encountering subsequent layers. As the simulation shoes, little of the round breaches the crew space; with greater diffusion of energy from being unstable it could be that the armour model will have worked.
Exactly. The idea of this wedge armor with great spacing was that short russian APFSDS rounds would change angle of impact upon main turet armor defating its penetrating capabilities
Issue here specifically is that M829A2 is a long rod, so hitting about there makes is so that the tumble can be near neglected, arrowhead don't protect a bunch against NATO rounds I guess
@@ket451 not really, being a long rod penetrator does not negate the tumbling. To negate the tumbling effect you need an Penetrator of more than 1m length
Except this is m829. The dart will sharpen as it pentrates. Ie nothing will hang up causing it to tumble. It didn't tumble when it penetrated t72 upper front plate in iraq. It when in and out.
I respect the time you put in this, but the composite armour was not modelled right here, there are ceramics and rubber between the steel plates, so I dont count this test as successful.
Is this simulation accounting for the reactive element of the NERA array or is it treating the "rubber" element as static (ie just based on it has a hardens of X and a toughness of y and ignoring the fact that "rubber" bulges energetically into the projectile)? Also what are you basing the material properties on the NERA off of? As far as I know the specific characters of the polymer ("rubber") used is highly classified.
Ive yet to see a sim that got this part right. By all accounts NERA or Chobham is supposed to deform so energetically that is destroys the rod by returning a portion of its energy to the long thin projectile unevenly across the length of the rod itself. All photos Ive seen (on Merkava's mostly) of armor after its been hit with APFSDS show the rod as being entirely destroyed in most instances.
@@mostsacredstories Yeah but without knowing what proprieties the "rubber" has (never mind the exotic stuff used in more modern version) it's going to be hard to sim it. Also these armor sims might not just be set up to properly model how they work in the first place so it might be a while until we can get accurate simulations. Of course by the time we do that, tank armor is only going to be even crazier (needless to say, we're starting to see armor that is actually almost as batshit as the early speculation from the 80's thought it was) .
It is taking inertia effect but not that mach. We need to do further increase the thickness of deflector cone so that projectile will deflect and shatter while hitting the composite armor.
Even without shattering, the angle of attack of the penetrator would be such that it would approach the composite armor at a non-perpendicular angle, dramatically increasing the effective thickness of the armor. Also it's not inertia that isn't modeled here, it's destabilization; specifically the perpensity of a projectile to destabilize in flight after penetrating a non-perpendicular surface.
In other stimulations I've seen of similar parameters, the rod orientation is changed ≈1° by impact of the forward most plate and prior to impact with the inner plate (where 2A4 armor would begin). Is the penetrator in this simulation "on rails," or are there other factors differentiating this result?
It is my understanding that the unusual standoff distance provided by the wedge shaped armor is supposed to disrupt the terminal ballistics of long rod penetrators
The main wedge is way more than 15mmx3 thick, it's more like 80mm of NERA, behind which are thick angled NERA deflector plates which you didn't model either. I suggest you take a much deeper look at the pictures available of the plates. Remember the protection value of even the B-tech variant as pr. leaked Swedish defence documents is atleast between 840-890mm RHAe vs KE rounds.
Anywhere I can find this? I had the leaked still classified ones of the Challenger 2 but it was picked out my online folder by whoever went on a clean up. Some guy leaked them on a WarThunder forum because he felt the armour specs were too low for the I game Challenger 2. He wasn't wrong mind.
I thought part of the reason it was so hard to pen was due to the effect the angled armor has on the round from initial contact. I thought that the very first layer of armor destabilize the round making it hit the main armor at an undesired angle. Basically like smacking the main armor and not doing nearly as much damage.
For a bit it does that to some extent, visible on the tip being bent almost backwards spreading the forces *almost* enough to fully disintegrate the projectile. Sloped armor also works as "thicker" armor than the actual thickness. And the chambers "muffling" the shrapnel/hot gas is just beatiful to see at work! So much knowledge, thoughts and technological achievements put into something as "simple" as armor! Just marvelous what materials humanity is able to create and utilise! All this combined and it's still defeated by "just" throwing heavier stuff faster which itself is a technological marvel to pull off xD
@@datpudding5338 "For a bit it does that to some extent, visible on the tip being bent almost backwards" it is also visible that the simulation is ignoring this factors... Dylan is right, the dart should destabilize->and in this simulation it is completly not bothered by the fact that huge chunk of it is on its side->how?->it is a solid object not a fluid...
Would be more interested to see M839A2 vs the more modern composites in a leopard 2A7 turret for example, also at more realistic combat ranges of around 1km or more. I'm assuming the 2A7 has tungsten carbide plates instead of the steel ones shown here.
This is why DU is so important as a penetrator. The self Sharpening phenomena (adiabatic shear banding) allows it to continue penetration even though the first layer of armor may have deformed the round.
I'm pretty sure self sharpening is somewhat of a myth, and that the tip being blunt makes very little difference to the penetration, DU is better because it's denser
This sim shows that APFSDS deforms drastically when penetrating the angled armor. So, there should be like another several armor plates with counter-angle( like this "..."), that would be huge in sizes, but maybe less steel would be needed and space can be filled with ERA
That composite arrangement is weirdly simplified and not at all realistic. Also i don't belive the mixed materials are properly processed in this scenario, as i don't see much interaction.
I heard that the outer wedge plates of steel were to catches the fins on the sabots causing the rounds to hit the main armor on an angle don't know if that true
I feel like the NERA elements should be angled more. Here they are angled at what appears to be 30 degrees from the normal, when the maximum protection level would be achieved at 68 degrees from the normal.
Compounded angle of impact is something like 30o *50o==1.58 * LOS. Most research papers examining modern armors feature 1/2 dozen thin plates stacked short distance apart. As Each plate is penetrated the penetrator tip is slowed in relation to the tail speed.. When the tip clears each spaced plate ; the speed normalize to the tail speed ; , but erosion continues until equilibrium occurs. This should weaken the tip as it continues to penetrate "follow on " spaced plates, undergoing the same strain effect. Calculating this; each spaced plate adds one plate thickness plus the one rod diameter to the accumulated block resistance.: source ; 19th Int. Symposium of Ballistics TB16; pp1167 to pp 1174
Seems unrealistic that a rod would deform and bend that extremely at the tip without changing its flight angle at all. Just ask yourself: What force is bigger? A force that could bend a thick tungsten or DU rod that much, or the inertia that keeps that rod on course? As much forward momentum as such a projectile has, the force that keeps it on course is actually rather flimsy, which is the whole reason why you need to stabilize it and why accuracy is an issue. Wind can blow it off course at long enough distances traveled. Imagine the enormous perpendicular force necessary to bend the rod into a hook shape. There is no way it would just keep flying straight like a laser beam, no matter how fast it is. The wedge-shaped addon armor is supposed to make the penetrator tumble before it hits the main armor. There would be no point to it, if rods interacting with it would just be able to continue on their path undisturbed, like shown in this obviously flawed simulation. Also, as others have pointed out, the composite sandwich armor is not made of simple steel plates.
@ Sasha XXY: I got a notification for your reply, but when I click on it, it isn't displayed. Here my answer: You think knocking a super hard tungsten or uranium rod off course takes more force or time than bending it into a horseshoe shape?
Knocking a tungsten or uranium rod off course does indeed take time. If you do it in a few hundred microseconds, which is what happens here, the amount of time is so small that the forces necessary to deflect the rod in that time would break the bonds between the atoms and massively deform the rod. Recall that in order for the entire rod to be deflected as a unit, the forces would need to be transmitted across the entire rod from where the forces are initially applied. When the forces are very high, they cannot be fully transmitted across the gaps between atoms and the rod deforms. The forces may not look very high from the simulation, but that's because the time is slowed down by several thousand times. In reality, the rod is traveling at 1675 m/s and the entire sequence happens in about 1 millisecond.
@@TrangleC If the Dunning-Kruger effect is working that strongly on you, I'm afraid there's nothing I can do for you. All I can say is that whatever physics education you've had has not gone past the basics, and you should really do a lot more research. Given that you say "in school", I assume you never had any physics courses in college, if you even went. For the record, high school physics classes assume "rigid bodies", "negligible friction", and other such approximations that absolutely do not work for high velocity impacts. Edit: Actually, here's something. Have you ever seen a video of someone shooting lead plate with bullets? The plate craters and the bullets flatten into the shape of the crater they create. Have you ever held lead? It's solid metal, but it turns into play-doh when shot out of a gun.
@@J7Handle Physics vs Psychology? What a great response Idk I see a lot of people make underestimating narrative about the Germans or US, like you. You know I see a lot of loser using Psychology as a Response card when losing in arguments 😏.
I have zero knowledge about the subject so my question might be kinda stupid but anyway. Who is winning the race armor or AP? I think that armor is just alway trying to at least keep up but idk.
In the title of the video it says 120 mm and in the picture on the top left it always says 105 mm .... were the correct values used for the calculation?
@@extremeengineeringsimulati5627 Hi there. Take the video material you got and tanke a closer look on the inside of the wedge. There you can clearly see the plates. From my military career in the german army i can tell you, "they are there". ;) There are also rumors spread from tankers, that the wedge will be filled with someting more in a war. But that are just rumors. Not confirmed facts as i know.
Please study ballitics. Projectiles loose energy very quickly thru spaced objects plus the projectile will not stay intact nor have the inertia to stay fixed in speed or flight path. This is especially true of smaller diameter projectiles.
From what I've learned, the purpose of the thin, angled armor on the front of the turret is not to resist the penetrator but to disrupt its flight attitude. Any change in the pitch or yaw of the penetrator will have a significant effect on its ability to penetrate the main armor. In this simulation there's no real change in the rod's flight attitude, which is pretty unlikely. By all accounts this thin spaced armor is quite effective, so much so that the Russians are considering lengthening their penetrators to help deal with the issue.
Да, вчера за круглым столом собрались и решили удлинить пенетратор)) а если серьезно, то борьба щита и меча не останавливается ни на секунду и снаряды улучшают постоянно.
The Russians can't extend their penetrator because their automatic loaders can't handle it. Leo 2 and M1 can do this without any problems because these systems have a loading shooter.
Some fairy tales, Leo has a "beak" in front of the combined armor of the tower, which is mainly needed to protect against cumulative projectiles and small-caliber guns. Why does the BOPS bend even before hitting the armor? The crowbar should practically not notice the "beak".
If you mean the chisel-shaped addon-armor with "beak", then no, that has nothing to do with small arms fire. It is supposed to make APFSDS penetrators tumble and hit the main armor sideways, which is not simulated in this video.
What's the purpose of the wedged plate if it is so thin ? Why not make it at least a foot thick or place more plates inside ? The big space in between is useless and wasted.
It isn't. This video is intentionally incorrect. Look at the channels replies in awkward English. This channel is using Cunningham's Law to fish for classified info.
So the Arrow shaped armor doesnt actually destabilize the Projectile? xD Thats like the whole point of this kind of armor design, to destabilize the rod once it fully entered the arrowhead, leading to non succesful penetration.
There are multiple thing not accounted for like the effect of the rubber and the plates to change the angle before impact with NERA but those are classified as hell so
@Frido It was reported in the report of the 3rd Brigade, 3rd Infantry Division (attached to the 1st Armored Divion during Gulf War one.). It is also listed in the Brigades post war book
@@muzikizfun i rather doubt that, except it was actually a cheap iraqi T72 "copy" made out of cast iron armor OR a 90dergree hit on the lower hull, not the turrent of an actual T72
@@Blei1986 uh no, one thing alot of you people still do not understand, is how dense D.U is and how it self/sharpens itself it can and will go through 1 tank and keep going.
I believe there were images with removed wedge modules and there was an additional layer of steel angled outwards toward thes sides... what kind of machine/system are you using for the simulation?
All this is good ... but the probability of the tank being placed with its forehead under the projectile ... is 15-20% ... those who will shoot ... will always look for more convenient angles and even in the frontal projection they will not aim at the tower
Why, when hitting the outer layer of armor, part of the energy and the projectile is "reflected" thanks to the angle of the plate, and inside the simulation does not take into account the inclination of subsequent layers? With successive plates arranged in this way, the energy of the projectile would be dispersed vertically and certainly the remains of the sabot would not fall into the interior in the place where it is shown. As long as there is enough energy left in them to penetrate inside, the same penetration should take place somewhere near the ceiling of the tower, and not at the height at which the bullet hit the first layer ... Next plates are set on an specify angle to additionally they absorbed energy and changed the direction of its dissipation.
the long rod penetrator loses between 1&2 projectile diameters for each spaced plate it perforates. The erosion on the rod continues as if the air gap in between is solid metal.
Try not to aim at the turret....perhaps. I know a few gunners and very seldom is the target area the turret. A sly AT4 at the back end is usually the best option. Tanks on the modern battlefield need a lot of boots on the ground to secure their advancement. If an area hasn't been secured there is no way a tank crew is zooming off up the road. Most armour now is reduced to a support role. They need high maintenance to keep them looking pretty. Night vision for troops on the ground would be a better investment.
i read somewhere that the 2A7 config of the NERA with the hollow cavity combined have like something close to ~2500mm against heat and about 1800mm against apfsds since the hollow cavity acts like a scissors and deforms the rod dumping a good amount of "kinetic" energy into itself ergo rendering its effectiveness down as much as 50%...could be bs but ive never seen the data so yah
I love to pictures from war thunder x-ray to show 3d armour models.
based
Leopard 2 uses perforated armour plates with glass or ceramic reinforced polymer in the holes.
Polymer was replaced by tungsten with A5 armor upgrade
The holes are sized and placed so that a penetrator hits a part with low and a part with high density. This causes the penetrator to bend or wander of similar to a drill in objects with mixed hardness.
To prevent the plugs from simply being pushed out of the holes a polymer plate is placed between each plate
Backstop plate is actually 2 plates with a layer of polymer between because that allows the softer back plate to absorb some impact forces to prevent shattering of the harder front plate
Come on!!!
You have source?
Stop leaking classified documents hans…
are the wehraboos desperate?
The armor of the Leopard was not changed, it remained the same
only armor was added(arrowhead)
this is a big problem today (actually for 20 years) because the Leopard was never modular (like the AMX-52 Leclerc for example)
each Upgarde is extremely expensive and time-consuming
so Hans..................your tank suck
Wehraboos? Go bugger yourself with a catus. Last time I checked, the Third Reich was dead.
And yes, the armor of the A5 and onwards was significantly improved.
Maybe not being such a dick would help?
Dear Viewers, the simulation is based on assumptions taken from references it does not replicate the actual scenario (as most of armor details are classified). Please comment below the changes required further, we will update that in next part of the simulation, thanks !
I think it would be kinda important that the bulging plates BULGE.
I eonder why does the rod deflect downwards so much, the force exerted on the plate is down, so it should bounce upwards if at all (APFSDS dont reqlly get defelected/bent unless in extreme angles) Also the NERA plates should get caved in, feeding the front plate into the penetrator, and then bounce back, feeding the back plate. That is what makes RA so effective, it makes projectiles go through way more armor than they actually should. The more spaced and angled, the more pronounced the effect is...
This kind of Reminder for Simulation Channel is so brilliant honest and professional.👏
Dejmian Xyz look shit they just show slab of armor you didn't know what part is that. They just put it in thumbnail just to assume lol
@@morrisonparker3229 Thank you for appreciation !
The main role that these wedges have is to change the path of the incoming Projectile. It penetrates the wedge and then starte so change it’s flight path. It then hits the main armory at a slight angle. That’s wha makes the turret so hard to penetrate. And that’s the reason the T14 is one of the only tanks that (supposedly) can penetrate the turret. Because the APFSDS dart is long enough that the start and the end of the dart both stay “connected” to the Armor. That way the wedge is unable to change the incoming angle that the dart has.
So according to a german report, that wedge is suppose to make the projectile angle so that it hits the main armor sideways or so.
With older rounds that would probably work, but I think modern APFSDS would just go right through straight on
@@izaicslinux6961 No, it's a physical limitation of the length of the penetrator, the penetrator has to be long enough that the tip begins it's penetration of the composite armor before the tail leaves the arrow head wedge. Currently there are no projectiles long enough to circumvent this destabilization.
@@92HazelMocha thats only true if the projectile hits the center or around there
That part is probably the most accurate part of this simulation… the simulation is unlikely to fail when the armor configuration is just a sloped plate. The part where this simulation is incomplete is the composite armor material. Apfsds is unlikely to be that affected by angles. It may bend a little, but turning 90 degrees is nonsense. In order to make it bend more, they probably used other materials for the wedge, which is not shown in the simulation.
@@HunterYangBird im no expert on this and i may be wrong, but as far as im aware there is a layer of rubber sandwiched inside the armour between two plates, when hit this will cause the back plate to deform somewhat, this deformed plate destabilizes and damages the projectile prior to it hitting the main armor, not enough to turn it anywhere near 90 degrees but even a 3 or 5 degree rotation can have surprising effects on a long rod projectiles ability to penetrate armor.
My understanding of the space between the initial plate and the subsequent armour is intended to allow the impact of the initial penetration to destabilise the projectile to such an extent that it's energy is not so focussed when encountering subsequent layers. As the simulation shoes, little of the round breaches the crew space; with greater diffusion of energy from being unstable it could be that the armour model will have worked.
shows, not fkn shoes...
@@LessAiredvanU U are so mean!
Penetrating the hollow wedge will actually cause the dart to tumble, reducing its AP capability even further.
Exactly. The idea of this wedge armor with great spacing was that short russian APFSDS rounds would change angle of impact upon main turet armor defating its penetrating capabilities
Issue here specifically is that M829A2 is a long rod, so hitting about there makes is so that the tumble can be near neglected, arrowhead don't protect a bunch against NATO rounds I guess
@@ket451 not really, being a long rod penetrator does not negate the tumbling.
To negate the tumbling effect you need an Penetrator of more than 1m length
Exactly. I don't think any existing shell is able to penetrate modern Leopard turret protection up front.
Except this is m829. The dart will sharpen as it pentrates. Ie nothing will hang up causing it to tumble. It didn't tumble when it penetrated t72 upper front plate in iraq. It when in and out.
I respect the time you put in this, but the composite armour was not modelled right here, there are ceramics and rubber between the steel plates, so I dont count this test as successful.
Is this simulation accounting for the reactive element of the NERA array or is it treating the "rubber" element as static (ie just based on it has a hardens of X and a toughness of y and ignoring the fact that "rubber" bulges energetically into the projectile)? Also what are you basing the material properties on the NERA off of? As far as I know the specific characters of the polymer ("rubber") used is highly classified.
Ive yet to see a sim that got this part right. By all accounts NERA or Chobham is supposed to deform so energetically that is destroys the rod by returning a portion of its energy to the long thin projectile unevenly across the length of the rod itself. All photos Ive seen (on Merkava's mostly) of armor after its been hit with APFSDS show the rod as being entirely destroyed in most instances.
@@mostsacredstories Yeah but without knowing what proprieties the "rubber" has (never mind the exotic stuff used in more modern version) it's going to be hard to sim it. Also these armor sims might not just be set up to properly model how they work in the first place so it might be a while until we can get accurate simulations. Of course by the time we do that, tank armor is only going to be even crazier (needless to say, we're starting to see armor that is actually almost as batshit as the early speculation from the 80's thought it was) .
0:32 this is from WarThunder
Game with:
Airplanes 20s-80s
Tanks 20s-2020
Warships 1913/4 80s/90s
Helicopters 60s-2020
This simulation is not counting the INERTIA that would change drastically the direction of impact causing the shattering of the APFSDS.
It is taking inertia effect but not that mach. We need to do further increase the thickness of deflector cone so that projectile will deflect and shatter while hitting the composite armor.
@@extremeengineeringsimulati5627 i wonder if they have changed the turret wedge composition over the versions.
@@fabio6170 the wedges are mostly empty.
Even without shattering, the angle of attack of the penetrator would be such that it would approach the composite armor at a non-perpendicular angle, dramatically increasing the effective thickness of the armor.
Also it's not inertia that isn't modeled here, it's destabilization; specifically the perpensity of a projectile to destabilize in flight after penetrating a non-perpendicular surface.
@@Tankliker no they are not empty there are alkos plates inside the wedge to make the Penetrator tumble / break even more
In other stimulations I've seen of similar parameters, the rod orientation is changed ≈1° by impact of the forward most plate and prior to impact with the inner plate (where 2A4 armor would begin). Is the penetrator in this simulation "on rails," or are there other factors differentiating this result?
Id like to see this sim again with different materials in the armor to see what is best
It is my understanding that the unusual standoff distance provided by the wedge shaped armor is supposed to disrupt the terminal ballistics of long rod penetrators
This video is going to have a lot of visitors
The main wedge is way more than 15mmx3 thick, it's more like 80mm of NERA, behind which are thick angled NERA deflector plates which you didn't model either. I suggest you take a much deeper look at the pictures available of the plates. Remember the protection value of even the B-tech variant as pr. leaked Swedish defence documents is atleast between 840-890mm RHAe vs KE rounds.
Anywhere I can find this? I had the leaked still classified ones of the Challenger 2 but it was picked out my online folder by whoever went on a clean up.
Some guy leaked them on a WarThunder forum because he felt the armour specs were too low for the I game Challenger 2. He wasn't wrong mind.
Yeah i think warthunder is not valid for any modern MBT armor.
yes its an ongoing problem with discussions.
Imagine War Thunder being taken as a reference
At 2:18 the screen text says “composite armor defination”, I don’t know that word “defination” and can’t find it on-line. Is it a technical term?
what's the name of the software used for the simulation?
The steel aera has holes filled with ceramic and rubber!! You missed that!! Great Vid btw
Вот только, что смотрел видео, где снаряд т 72 не пробил броню леопарда, а тут снаряд леопарда пробивает сам себя. Кому верить?
I'm waiting for someone to comment a classified document. It's becoming more and more interesting when someone argues in the internet.
Is it possible to simulate APFSDS vs sand (contained)?
Do T-64A and T-72A turrets vs M-735 and M-774 apfsds.
There is no tracer version on the APFSDS round, all rounds above 50mm are visible wether tracer or not.
I thought part of the reason it was so hard to pen was due to the effect the angled armor has on the round from initial contact. I thought that the very first layer of armor destabilize the round making it hit the main armor at an undesired angle. Basically like smacking the main armor and not doing nearly as much damage.
For a bit it does that to some extent, visible on the tip being bent almost backwards spreading the forces *almost* enough to fully disintegrate the projectile. Sloped armor also works as "thicker" armor than the actual thickness. And the chambers "muffling" the shrapnel/hot gas is just beatiful to see at work! So much knowledge, thoughts and technological achievements put into something as "simple" as armor! Just marvelous what materials humanity is able to create and utilise!
All this combined and it's still defeated by "just" throwing heavier stuff faster which itself is a technological marvel to pull off xD
@@datpudding5338 "For a bit it does that to some extent, visible on the tip being bent almost backwards" it is also visible that the simulation is ignoring this factors... Dylan is right, the dart should destabilize->and in this simulation it is completly not bothered by the fact that huge chunk of it is on its side->how?->it is a solid object not a fluid...
Would be more interested to see M839A2 vs the more modern composites in a leopard 2A7 turret for example, also at more realistic combat ranges of around 1km or more. I'm assuming the 2A7 has tungsten carbide plates instead of the steel ones shown here.
Actually all this is impossible since the armor details are classified. Even this video can be inaccurate.
@@Yeshayahu. maybe some warthunder fan leakes them again like they did with the Challenger 2
@@memiusobscuricus1438 you mean military WT fans with official tank manual lol.
Yeah the actual armor is highly classified. Even from the Leopard 2s earliest models.
@@memiusobscuricus1438 bro leaking something as classified as that would get alot of people in a lot of trouble.
This is why DU is so important as a penetrator. The self Sharpening phenomena (adiabatic shear banding) allows it to continue penetration even though the first layer of armor may have deformed the round.
I'm pretty sure self sharpening is somewhat of a myth, and that the tip being blunt makes very little difference to the penetration, DU is better because it's denser
@@JohnDoe-jp4em And that would make you an idiot,
Please google adiabatic shear banding and DU.
@@JohnDoe-jp4em negative, it’s not a myth.
@@SgtDangles yes they study it in the ''int.journal of engineering''. many papers.
Could you make a video with APFSDS rounds but with different materials for a comparison? Say steel, then tungsten, then depleted uranium!?
This sim shows that APFSDS deforms drastically when penetrating the angled armor. So, there should be like another several armor plates with counter-angle( like this "..."), that would be huge in sizes, but maybe less steel would be needed and space can be filled with ERA
What range would this shell be fired at?
The range in this similation or in general?
wow that`s alot of energy
Y por que no le meten ma sblindaje en donde esta la parte inclinada externa ?
That composite arrangement is weirdly simplified and not at all realistic. Also i don't belive the mixed materials are properly processed in this scenario, as i don't see much interaction.
I heard that the outer wedge plates of steel were to catches the fins on the sabots causing the rounds to hit the main armor on an angle don't know if that true
I feel like the NERA elements should be angled more. Here they are angled at what appears to be 30 degrees from the normal, when the maximum protection level would be achieved at 68 degrees from the normal.
Compounded angle of impact is something like 30o *50o==1.58 * LOS.
Most research papers examining modern armors feature 1/2 dozen thin plates stacked short distance apart. As Each plate is penetrated the penetrator tip is slowed in relation to the tail speed..
When the tip clears each spaced plate ; the speed normalize to the tail speed ; , but erosion continues until equilibrium occurs. This should weaken the tip as it continues to penetrate "follow on " spaced plates, undergoing the same strain effect.
Calculating this; each spaced plate adds one plate thickness plus the one rod diameter to the accumulated block resistance.:
source ; 19th Int. Symposium of Ballistics TB16; pp1167 to pp 1174
ngl that war thunder image of the armour caught me defenseless
Im sleeping in 90% BUT I HAVE TO WATCH IT
Seems unrealistic that a rod would deform and bend that extremely at the tip without changing its flight angle at all.
Just ask yourself: What force is bigger? A force that could bend a thick tungsten or DU rod that much, or the inertia that keeps that rod on course?
As much forward momentum as such a projectile has, the force that keeps it on course is actually rather flimsy, which is the whole reason why you need to stabilize it and why accuracy is an issue. Wind can blow it off course at long enough distances traveled.
Imagine the enormous perpendicular force necessary to bend the rod into a hook shape. There is no way it would just keep flying straight like a laser beam, no matter how fast it is.
The wedge-shaped addon armor is supposed to make the penetrator tumble before it hits the main armor. There would be no point to it, if rods interacting with it would just be able to continue on their path undisturbed, like shown in this obviously flawed simulation.
Also, as others have pointed out, the composite sandwich armor is not made of simple steel plates.
@ Sasha XXY: I got a notification for your reply, but when I click on it, it isn't displayed.
Here my answer:
You think knocking a super hard tungsten or uranium rod off course takes more force or time than bending it into a horseshoe shape?
Knocking a tungsten or uranium rod off course does indeed take time. If you do it in a few hundred microseconds, which is what happens here, the amount of time is so small that the forces necessary to deflect the rod in that time would break the bonds between the atoms and massively deform the rod.
Recall that in order for the entire rod to be deflected as a unit, the forces would need to be transmitted across the entire rod from where the forces are initially applied. When the forces are very high, they cannot be fully transmitted across the gaps between atoms and the rod deforms. The forces may not look very high from the simulation, but that's because the time is slowed down by several thousand times.
In reality, the rod is traveling at 1675 m/s and the entire sequence happens in about 1 millisecond.
@@J7Handle Did none of you guys attend physics classes in school?
@@TrangleC If the Dunning-Kruger effect is working that strongly on you, I'm afraid there's nothing I can do for you. All I can say is that whatever physics education you've had has not gone past the basics, and you should really do a lot more research. Given that you say "in school", I assume you never had any physics courses in college, if you even went.
For the record, high school physics classes assume "rigid bodies", "negligible friction", and other such approximations that absolutely do not work for high velocity impacts.
Edit: Actually, here's something. Have you ever seen a video of someone shooting lead plate with bullets? The plate craters and the bullets flatten into the shape of the crater they create. Have you ever held lead? It's solid metal, but it turns into play-doh when shot out of a gun.
@@J7Handle Physics vs Psychology? What a great response
Idk I see a lot of people make underestimating narrative about the Germans or US, like you. You know I see a lot of loser using Psychology as a Response card when losing in arguments
😏.
Can you do a video that T-54 soviet tank gun vs Abram frontal armor?
so, does it penetrate or not? The simulation stops right before someone can figure out
A bad day for the crew!
I find it allways so funy that Amateure know how the top secrect Armor of modern Tanks works🤣. Hmm russian troll?
Todays warfare with APFSDS-T Darts is: Whoever shoots first wins. No Armor is really capable of compleatly stopping that projectile.
Exelent! Can you show haw pojechał trawel after penetration in turet/Hull?
I have zero knowledge about the subject so my question might be kinda stupid but anyway. Who is winning the race armor or AP? I think that armor is just alway trying to at least keep up but idk.
You should model the latest GIAT or Nexter rounds.
How do you calculate the hydrodynamic course for the projectile in this simulation?
It is taken care by simulation software.
Great simulation. Is it possible to calculate the amount of torque this hit generates, that would be transferred to the turret and then onto the ring?
its actually a bad simulation, steel NERA has holes filled with ceramic. That changes course of apfsds
In the title of the video it says 120 mm and in the picture on the top left it always says 105 mm .... were the correct values used for the calculation?
Why the internal angled plate in the frontal wedge is missing in your simulation?
We do not have reference information on that, We will add in next iteration.
@@extremeengineeringsimulati5627
Hi there.
Take the video material you got and tanke a closer look on the inside of the wedge. There you can clearly see the plates.
From my military career in the german army i can tell you, "they are there". ;)
There are also rumors spread from tankers, that the wedge will be filled with someting more in a war. But that are just rumors. Not confirmed facts as i know.
You forgot to model the triangle armour inside the wedge armour. Iirc, it was intended to de-normalize APFSDS rounds.
Please study ballitics. Projectiles loose energy very quickly thru spaced objects plus the projectile will not stay intact nor have the inertia to stay fixed in speed or flight path. This is especially true of smaller diameter projectiles.
From what I've learned, the purpose of the thin, angled armor on the front of the turret is not to resist the penetrator but to disrupt its flight attitude. Any change in the pitch or yaw of the penetrator will have a significant effect on its ability to penetrate the main armor. In this simulation there's no real change in the rod's flight attitude, which is pretty unlikely. By all accounts this thin spaced armor is quite effective, so much so that the Russians are considering lengthening their penetrators to help deal with the issue.
Да, вчера за круглым столом собрались и решили удлинить пенетратор)) а если серьезно, то борьба щита и меча не останавливается ни на секунду и снаряды улучшают постоянно.
The Russians can't extend their penetrator because their automatic loaders can't handle it. Leo 2 and M1 can do this without any problems because these systems have a loading shooter.
The leopard 2’s turret armour inside the turret could be profected be more angling the plats
Sorry for my terrible spelling
Some fairy tales, Leo has a "beak" in front of the combined armor of the tower, which is mainly needed to protect against cumulative projectiles and small-caliber guns. Why does the BOPS bend even before hitting the armor? The crowbar should practically not notice the "beak".
If you mean the chisel-shaped addon-armor with "beak", then no, that has nothing to do with small arms fire. It is supposed to make APFSDS penetrators tumble and hit the main armor sideways, which is not simulated in this video.
Apfsds its okay but what mean the letters T after ?
What's the purpose of the wedged plate if it is so thin ?
Why not make it at least a foot thick or place more plates inside ?
The big space in between is useless and wasted.
Its meant to make the round tumble so it hits the nera components sideways or at least at a slightly higher angle
Certified war thunder moment
How is it possible to simulate this if the armor is classified?
Assumptions
It isn't. This video is intentionally incorrect. Look at the channels replies in awkward English. This channel is using Cunningham's Law to fish for classified info.
There are a leopard model with titanium and tungsten armour besides the steel plates, could be penetrated this armour???
Never seen any evidence to support armor plates of tungsten/titanium ???? Even DU seems dubious ?
So, even Leopard-2A6 doesn't have any armor under the first plate. The same picture as A5. What about KF-51 Panther?
that type of armor gives very good protection against cumulative shells and rockets but it struggles to stop deadly kinetic darts
The spaced armor picked nose is actuall intended to make the penetrator tumble after it enters completely.
Not clear the part of the arrow that penetrantes the cabin
This pencil is mightier than the sword.
Which programs have you used to make this animation ?
apparently the hollow part is suposed to make darts less than 1000mm lengh tumble. But this simulation does not seem to account for that.
So the Arrow shaped armor doesnt actually destabilize the Projectile? xD Thats like the whole point of this kind of armor design, to destabilize the rod once it fully entered the arrowhead, leading to non succesful penetration.
There are multiple thing not accounted for like the effect of the rubber and the plates to change the angle before impact with NERA but those are classified as hell so
Isnt cheeks have composite too?
The silver (depleted uranium) bullet is a serious tank killer. Heard one round went completely through two T-72 tanks!
Interesting, do you have an source on that?
@Frido It was reported in the report of the 3rd Brigade, 3rd Infantry Division (attached to the 1st Armored Divion during Gulf War one.). It is also listed in the Brigades post war book
@@muzikizfun i rather doubt that, except it was actually a cheap iraqi T72 "copy" made out of cast iron armor OR a 90dergree hit on the lower hull, not the turrent of an actual T72
@@Blei1986 uh no, one thing alot of you people still do not understand, is how dense D.U is and how it self/sharpens itself it can and will go through 1 tank and keep going.
What is this for a Simulation Mode to Create this Video?
NATO boys coping the hard as they can get in the comment section 😂
One may think about putting reactive armor on the arrowhead. That should increase the deformation of the rod.
Please make the Leclerc's upper frontal plate.
If that was so easy to pen every country must sell leopard 2 now 😂
I believe there were images with removed wedge modules and there was an additional layer of steel angled outwards toward thes sides... what kind of machine/system are you using for the simulation?
video: how to kill tank crew
Musick: 🤗🌺
seems to be one hell of a shot trap on the lower side of the wedge
All this is good ... but the probability of the tank being placed with its forehead under the projectile ... is 15-20% ... those who will shoot ... will always look for more convenient angles and even in the frontal projection they will not aim at the tower
Русские скоро снимут видео с краш-тестом Леопардов и абрамсов.
пока украинцы целый год снимают краштесты ка-52 ,т-90, су-35, тор, панцирь и даже ракетного крейсера
@@ivanpupkin9096 шо маемо то маемо... но поверь моим словам.
This is if the penertrator doesn't change its angle !
Funny how the wehraboos stupidly believed the simulations of this channel were realistic AF until they saw this video, lol
And to think the a2 is an older variant. We now have longer a3 and classified a4 varients
My favourite twamk has dissapointed me.
The point of the angled and spaced wedge turret is to make the round cavitate on its longitudinal axis, which you haven't modelled
Will further update simulation in next part...
Isn't supose that the arrowhead is divided in 3?
Why, when hitting the outer layer of armor, part of the energy and the projectile is "reflected" thanks to the angle of the plate, and inside the simulation does not take into account the inclination of subsequent layers? With successive plates arranged in this way, the energy of the projectile would be dispersed vertically and certainly the remains of the sabot would not fall into the interior in the place where it is shown. As long as there is enough energy left in them to penetrate inside, the same penetration should take place somewhere near the ceiling of the tower, and not at the height at which the bullet hit the first layer ... Next plates are set on an specify angle to additionally they absorbed energy and changed the direction of its dissipation.
the long rod penetrator loses between 1&2 projectile diameters for each spaced plate it perforates. The erosion on the rod continues as if the air gap in between is solid metal.
Try not to aim at the turret....perhaps. I know a few gunners and very seldom is the target area the turret. A sly AT4 at the back end is usually the best option. Tanks on the modern battlefield need a lot of boots on the ground to secure their advancement. If an area hasn't been secured there is no way a tank crew is zooming off up the road. Most armour now is reduced to a support role. They need high maintenance to keep them looking pretty. Night vision for troops on the ground would be a better investment.
There are different materials of the armoured plates and the ceramic/resin material between…
Lmaoooo all the people rushing to defend Leopard 2
I guess that's why they make reactive armour
i read somewhere that the 2A7 config of the NERA with the hollow cavity combined have like something close to ~2500mm against heat and about 1800mm against apfsds since the hollow cavity acts like a scissors and deforms the rod dumping a good amount of "kinetic" energy into itself ergo rendering its effectiveness down as much as 50%...could be bs but ive never seen the data so yah
bro fr gto reference pics outta war thunder
like a piece of paper )))))))
Yeah it ok as demonstrative simulation but without knowing composition of internal armor we can only guess.
So roughly the same as T-72BM3 with K5.
There is no way M829A2 can penetrate the turret cheeks.
Arjun Mark 1 A can stop this rounds from point black range. Tested.