12 March fresh new video here
just so many of good footage,praise the IRINN.IR
so,Karrar MBT aka T-90MS mod 2017 Iranian limited Edition 2.0
Has finally have a bit long TV report,and what is this?
when i see this ‘barrel protective case’ thing，the only thing in my mind is
"NO,T-72I4! It's him! He is Back!"
but after watch the video i pretty sure it's nothing but reference ~
first noticed difference is the ERA kit
Karrar 'ERA kit is smaller, have 6 plate on each slide front
compare to T-90MS 's 4 larger size Relikt ERA
the thickness of the ERA are pretty close so i guess it's just the smaller new Relikt variant
RCWS/Commander panoramic sight Station
huge muzzle brake but it seems just a 7.62mm RCWS，but looks cool
also the sight itself looks a cheaper product compare to T-90MS
Digital map,commanding system and Vehicle information Display
this is pretty good, Karrar may have the best digital equipment in all Iranian tanks，not even Zulfiqar-3
normal vision channal of the commander sight
for the gunner，i noticed something interesting
now this is something new, the Karrar have a whole new gunner sight,so obviously the new gunner sighting system is not simply rip-off from russian
but the really interesting thing is, it keeps the 1K13,which compare to T-90MS removed 1A45 completely and replaced by Sosna-U and a back up sight
why is this? @Lightning think, that Iran hasn't prepare or able to create their own laser guide coding equipment，if they want to use 9K120 ATGM system,they need keep the 1K13 for laser coding
which i found is a high possibility that could be true
karrar‘s gunner displayer compare to T-90MS
let's expect more information of this tank in the future
PELE (Penetrator with Enhanced Lateral Effectiveness) rounds are a new type of ordnance developed by Rheinmetall in the late nineties and early two thousands.
As the patent shows, they are similar in outward appearance to traditional long-rod penetrators, but are different in cross section:
The basic principle of a PELE is that the outer walls of the penetrator are made of a denser material than the core. At the extremely high velocities that the penetrator strikes the target, density (rather than material strength) is one of the most important factors in determining penetration. So the outer walls are able to penetrate the target, but the inner core is not. The outer walls of the penetrator continue moving forward, which compresses the inner core. This presentation from ATK has a helpful diagram:
As this Rheinmetall presentation shows, this gives much greater behind armor effect than a traditional long rod penetrator:
This new ammunition is available both in large-caliber and autocannon calibers.
Compared to traditional high explosive rounds, PELE rounds have the advantage that there is no explosive material in the penetrator. This means that there is no UXO risk at training ranges. Additionally, a tank with APFSDS and PELE ammunition types would be able to tackle most target types. If the ammunition were two-piece, then the inert APFSDS and PELE penetrators could be stored in the turret while the propellant charges could be stored separately in isolation. Britain's chieftain MBT used an ammunition stowage scheme like this, keeping inert APDS projectiles in the turret and propellant bags underneath the turret ring in wet ammunition containers. An ammunition stowage scheme like this would have the advantages of isolated ammunition stowage, but would require a less bulky isolated section of the tank, which often adds to the silhouette of the vehicle (e.g. abrams' enormous turret bustle).
The biggest disadvantage of PELE compared to traditional high explosive rounds is that the rounds do not fragment unless they hit something hard. As the presentations above show, the 120mm rounds will produce considerable fragmentation patterns after hitting something as light as 10mm of sheet metal, but they still need to hit something. So airburst or proximity fused options are out.