Wiedzmin

and one more addition to scheme

GPS area

50mm is strange, and can be another 80mm one...

26 minutes ago, Laviduce said:

Will you have the chance to post the actual threats and results of the ballistic and blast tests (i.e. 1-7, A-F,etc.) ?

if there was any details i've already posted, but all that was inside report is these pages sadly(if you need i can post full report), but i think threats is same as Leo2AV(cause both standartized around it) even that report claim "120 APFSDS and 105mm heat"

A - 5’’ brl precision shaped charge

B - 4,2’’ brl precision shaped charge

C - 3,2’’ brl precision shaped charge

D - 105mm APFSDS xm579e4 at striking velocity of 4858 ft/sec

E - apc-m.(br412d mod) at striking velocity 3150 ft/sec

interesting design changes in gun rotor, from M1 to IPM1(PV11 XM1 seems already had IPM1 type of rotor) and to M1A1

IPM1 had similar structure of rotor as M1A1, but lesser thickness 

105mm HEAT pened turret side ?

"Between Jan and Dec 2001, 45 Abrams tanks suffered fires during training, some were damaged, some were destroyed entirely. Over the tank's life at that point (22 yrs), there had been >600 fires - that's almost 10% of the fleet had..."

https://www.nist.gov/system/files/documents/el/fire_research/Finnerty-Fires-Experienced-and-Halon-1310-Fire-suppression-systems-in-current-weapon-Systems.pdf

An examination of data from peacetime fire incidents experienced by ground vehicles reveals several facets pertinent to this study. In Table 1, peacetime fire incident data for the M1/M1A1 tank for the years 1988, 1989, 1990 and the fires six months of 1991 have been summarized. These data show that the AFES system was only activated 71 percent of the time for M1/M1A1 fires and was adequate to extinguish the fire by itself only 34 percent of the time.

so how many tanks actually burned ?

https://disk.yandex.ru/d/kh72XfFbWlGDVg

https://disk.yandex.ru/i/kUCWvlQOfs8QJA

british report on trophied iranian chieftains in Iraq

side panels of arjun external fuel cells, 10mm ceramic plate on 10mm FRP backing(aramid fibers based) - IV by NIJ 0108.01 

engine hatches, same thing, ceramic on FRP, how they planing NOT to damage ceramic tiles during daily maintenance of tank i have no idea 

thanks to KR15T0F for help

Pz58 firing trials

https://www.recherche.bar.admin.ch/recherche/#/en/archive/unit/29378223

and a lot of others in swiss archives 

the final version of Arjun's calculations, all the thicknesses of the plates correspond to the real ones according to the nomenclature of the armor plates (those that existed), the dimensions of the special armor of the turret may not be accurate because there is nothing to check them with, 2 fuel tanks inside the engine bay have been added to the diagram which were not previously visible, more accurate estimates only possible if someone undertakes to build 3D...

*pink plate - pure frp

mantlet

turret LOS, don't know how accurate this is, but this all i can do

possible error for this overall- 20-25% in plus

it's only cradle barrel guide, and front plate will be mount in front of main casting, no any "solid chunk of steel" 

2 minutes ago, Fireball said:

the front should be solid around the gun but isnt here..

the other side 

Arjun turret structrure...90mm roof and bar seemst to be there only for structure stiffness 

nope  

there is more holes on other side 

CR2 rotor, hollow 

updated one more, added what seems to be early UFP

update on turret

something like that, can't tell more accurately 

hm, yeah possible, but can't see rifling in it, but...

@Renegade334

any ideas which gun this is ?

not sure, maybe M35 for M10

XM360

1964 soviet ERA

L2A4 hited by either tank fired HEAT, HE or heavy ATGM, driver hatch removed