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Militarysta

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Posts posted by Militarysta

  3. Ukrainian armor - Oplot-M, T-64M Bulat and other.

    in Mechanized Warfare

    Posted

    1 hour ago, Laviduce said:

     Could anyone  please explain this information?

     

    Yes, it's marketing fairytails. Knive ERA is well known and abilities to stop APFSDS are known too. Nope it does not work in sucht way on most covered by ERA area.

    And without a lot of RHA before and after Knive efectivens is less then old polish ERAWA-2 ERA. Knive/Nozh ERA abilitiest to protect are highly depend on place where SC/penetrator hit casette.

    And no way that Knive overcome Kornet. This is possible only for low-hight part of frontall hull module, but not in it's upper part par or on turret.

     

  4. Tanks guns and ammunition.

    in Ballistics Science Discussion

    Posted

    Soviet's since ca 1982 where looking abilities to overcome NERA armour and NxRA - so 3BM26 3BM26 and finally 3BM42 and 32. But in end of the 80's main arour where switched from NERA/Nxra layout to ceramics - and IMHO it's dffrent problems for main armour.

    Again - nothing to compare to "stupid mm RHA"

    It was in sucht schape on former Soviet Unionf

    cKBVlrM.jpg

    (sorry - source I will let to myself)

    Impossiblu?

    One of the T-80UD turret armour - orange  - ceramics,bluse -RHA,  heavy blue - HHS plate, light blue -cast:

    Z6jfjpa.gif

    A lot of RHA and HHS and Ceramics. And 4s22 before that.

     

    (again -shitty quality of the image by purpose)

     

  5. Tanks guns and ammunition.

    in Ballistics Science Discussion

    Posted

    15 hours ago, alanch90 said:

    A little lower than what was claimed before, right?

    Yes, and no :-)

     

    Remember that wester norms are based on 50% + 1 penetration norm for sucht level, and estern (and former WarPac) are ussaly 75%+1 penetration for sucht level.

    What's difffrent?

    DM33A1 accoding to polish WITU has 470mm RHA for 2000m (60 slopped) in western - ca 500- 510mm. The difrence is circa 8%.

    Maybe this  600mm @60. is for 75%+1 norm so circa  650mm for 50%+1?

     

    And the most importatnt - penetration level of "mm RHA" is BS.  It's completly not relevant. 

  6. Turkish airstrikes on Syrian AFVs

    in Mechanized Warfare

    Posted

    3 hours ago, Marsh said:

    The video is of an exceptionally high standard high. I don't recollect anything as clear as this being released by other air forces.

     

    Indeed, I aw this video dozen times and sevral things are interesting:

     

    1) Some shoots are from Lybia not Syria (Pantsir for example)

    2) Definetly this compilantion was made from video taken form more then one whole week

    3) SAA tactis not in FEBA area  is shity, AA defens on small unit level is shit, not even mentioned about camouflage, mockups etc. Tehre is exatly nothing like this.

    4) Many, to many hits are in  IR hot region of tanks or SPH's  - 2S1 and 2S3. Hit's in upper engine comperments are possible in two ways:

    - first- using this ciute: https://www.roketsan.com.tr/en/product/mam-l-smart-micro-munition/?fbclid=IwAR0gG-_9K7V9p0Ga1t1VmX7mjslu6FoseB_7PN9Jud16_nCWn1dEAxn5jho

    it's SAL guided so there is possible thet some sort of autotracer is targeting the most contrast region of IFV/SPH's -in other viideo parts tehere is pure visible SAL guidence on soilders group.

    - second - maybe this: https://www.roketsan.com.tr/en/urun/umtas-uzun-menzilli-tanksavar-fuzesi/

    is integrated whit drones whit pure thermal quindence

    Whathever - many hit's are not terminall kills and  im preatty sure that 25-30% hit's on this video in to tanks are not tottal loss. 

  10. Explosive Reactive Armor

    in Ballistics Science Discussion

    Posted

    23 hours ago, LoooSeR said:

       I guess only our Polish superhero, @Militarysta, can give an answer for those questions above my post.

     

    To the rescue!

    5f16e57d55c2.jpg

     

    also ERAWA have some sort of rubber outer pads ?

    Yes, ERAWA-2 casettes are covered by 4mm special absorber layer (1K2KS and 1KF2KS absorber) whit mass 6kg/m2 and able to protect against radar working in band X and Ku whit f=8-16GHz. On typical PT-91 sucht absorber cover circa 20m2 and achive reduce detecting range at 50 to 60% for typical conditions.

     

    btw is there live fire(tank firing at target with

    ERA, or tank with ERA) of tank 120-125mm HEAT on ERAWA ? not static test when they install HEAT near ERA cassete and detonate it

    Yes, on Ukarine in 2016 (tests for other client) when ERAWA-2 outperform Knive ERA vs HJ-8, RPG-29 and PG-7VR and BK-14M.  Sorry, no details couse all is classified still :(

     

  16. Polish Armoured Vehicles

    in Mechanized Warfare

    Posted

    In some way funny but it's seems that Abrams are seriously consider for polish army...

     

    11 Armoured Cav. Div. HQ told to brigades that in December will be finall decision about take ca.240 M1 Abrams. I'sholud be sceptic but source is rather good.

    Abrams should be taken by two brigades: 10Armoured Cav Brig and 34 Armoured Cav Bde. Still Im doubt but knowing this goverment - it's possible...

     

  17. StuG III Thread (and also other German vehicles I guess)

    in Mechanized Warfare

    Posted

    19 hours ago, SH_MM said:

    Mine protection plate of the Puma. It is either the upside down or the iimage is mirrored.

    EHT9ZBOXYAADtui?format=png&name=900x900

     

    It is also confirmed that the Puma uses NERA in the hull front and parts of the hull sides.

     

    Well in SPz Puma even hot air exhaust is made by double slopped NERA:

     

    urwdwKD.jpg

     

     

    hx8D9G7.jpg

     

     

    vDbK3h4.jpg

     

     

    About month ago I looked very cearfully on Shutzpanzer Puma on Ostrava NATO days :-) Lets's sey that is  better protected then I suspected. Mucht better. Talks whit crew was very interesting too.

     

    In fact for upper front hull part SC jet or 30-40mm KE rod must overcome 2 or 3 slopped on 18@ NERA plates, then overcome slopped front plate (LOS ca.50-60mm) then fly trought engine comparment and finnaly overcome 20mm bulkhead before crew comparment.  In lower hull we have two slopped 15mm plates whit primary engine fuel tank (50L) then we have huge slab of metal - HSWL and MTU engine and then 20mm bulkhead.

    IMHO Puma front is between 200-250mm vs KE penetrator from medium caliber automatic canons. In case SC warhed lower hull is less protected but upper hull - it shoud be able to stop any 80's ATGM without precursor and propably RPG-28 and PzF-3T frontally. A lot of NERA and huge space is nice protection IMHO.    

    Couple photos:

    Engine compartment - look at triple NERA layers:

     

    dYhxPSI.jpg

     

    NeRa or NxRA everywhere...:

    HSVt8TI.png

     

    Here is visible bulkhead thickenss:

    eyYDo3e.jpg

     

    And chamber for 50L fuel tank and doubla slopped ca.15mm plates:

    b5NoQtV.jpg

     

  20. Tanks guns and ammunition.

    in Ballistics Science Discussion

    Posted

    6 hours ago, Jackvony said:

    I can try to take more pictures today, especially to compare with photos of M829A3. I mentioned the hypothesis stated earlier in this thread that the datalink is used to program some kind of precursor to fly infront of the round to defeat heavy ERA to the Master Sergeant in charge of the display. He asked me if my parents worked for the military and when I said no, shook his head, smiled, and told me I knew too much. I know this is "heresay" but to me, it's pretty good confirmation you guys are on the right track.

     

    And and that this info's came public due to sevral polish military journalist in 2015 ;-)

     

    More seriously - sucht german patent:

    https://patentimages.storage.googleapis.com/4a/31/76/4c24841d62e3ce/US20180224251A1.pdf?fbclid=IwAR1SAv9tFXS7rPPAqhy4YDU6Cu10vt5sGK7tYRqBN8BW55NaOliQHJI-JLA

     

    Show this idea:

    QE8geVi.jpg

     

     

    When we are talking sevral years ago the only posiblities to overcome sucht thick and multi-ERA-layerd armour like on Oplot-M (whit some consist Lmax for western 120mm ammo) was to change idea of the attack, and infos about data-link for M829E4, Nexter OLF-F1NG, and...KE2020 whare some aditional help to think how to hell it could work.

    And really the only resonable option is detached during fly precursor -in fact it can be very elegeant and simply solution but onnly whit state-of-art metalurgy. Just metal  conection beetween main rod and precursor which overheat during fly  lets go "precursor" - rest is pure areodynamic or in more complex way - small air breakers somwhere near fins or tracer - just tiny ones to very small incarase aerodynamic resistance.

  23. The Leopard 2 Thread

    in Mechanized Warfare

    Posted

    From my article about 2AV armour.

     

    Many thanks for all peoples who help me whit this subject ;-)

     

    2AV armour:

    Turret armour citadele:

    evEnBpM.jpg

     

     

    turret special armour:

    4cHcn75.jpg

     

     

     

    hull in 1st version:

    IIqAI2S.jpg

     

     

     

    B&V test station, simmilar armour was choosen for 2A0:

    mMuEOTX.jpg

     

     

     

    Compare wester and estern tank but important notice - in my article is almoust exatly the same as @SH_MM mentioned above:

    Quote

    Btw. while the Brits assessed the Type B armor to provide protection equal to 350 mm steel against KE rounds, they also said that according to Germany it stopped 125 mm steel APFSDS (with WC slug), which according to the Brits could penetrate 380 mm of steel armor at 1,000 m and 420 mm point-blank. So protection is very variable, always depending on what round is used as reference. DM23 (with 420 mm RHA penetration at 200 m) was considered to be equal to Soviet 125 mm tungsten APFSDS with 475 mm penetration into steel point-blank and 440 mm at 1,000 m

     

    Compare:

    3P465M4.jpg

     

     

    And  AT weapons and sevral APFSDS munition:

    kn5YTyT.jpg

     

     

     

     

     

     

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