0006568: Shouldnt the Abrams Hull ( latest modell in mod ) be penetrated by most russian APFSD for example 3bm46 ? + Kornet

Notes
(0011981) Damian (reporter) 2021-12-06 17:03	No, it should not, because hull was improved. Do not use War Thunder or similar games as source, their armor model is BS. I was digging through the archives and found publications and documents confirming that hull was improved. Ballistic Research Laboratory "Ballisticians in War and Peace volume 3" states that M1A2 (model 1992/93) had front hull protection increased by 35% vs KE and by 25% vs CE compared to M1A1 (model 1985). The same publication also states that M1IP (1984) and M1A1 (1985) received improved armor vs KE threats compared to basic M1. I made some calculations. If M1IP and M1A1 front hull armor was increased from 400mm vs KE to at least 450mm vs KE, then basic M1A2 front hull would be 607.5mm vs KE. But this can be even greater value, for example if hull front of M1A1 was 500mm vs KE, then basic M1A2 would be 675mm vs KE. Front hull armor improvement is confirmed by The US Army Laboratories at Watertown publication "CONTRIBUTIONS TOSCIENCE AND TECHNOLOGY : A HISTORY" where it is said that Watertown with BRL developed tandem ceramic armor that provided 33% increase in protection vs KE. This corelates to "Ballisticians in War and Peace vol.3". And this is just late 1980's to early 1990's technology. In mod we have M1A1AIM, M1A1FEP, M1A2SEPv1 and M1A2SEPv2, all have improved armor. Only M1A1HC would be equivalent to basic M1A2 in terms of armor protection. I have plenty of photos of various M1A1 and M1A2 subvariants prototypes with weight simulators on the turret and hull indicating that also front hull armor was improved. So again, war thunder or other "eastern" "sources" are bs, Abrams front hull armor WAS improved. https://i.imgur.com/jzdHr8q.jpg [^] https://i.imgur.com/hWXtbHR.jpg [^] https://i.imgur.com/cF66Ahw.png [^] Photos: https://i.imgur.com/hcue5Hv.jpg [^] M1A1 prototype with weight simulator indicating front hull armor improvement. https://i.imgur.com/HsTZiJu.jpg [^] M1A2 prototype, weight simulator plate welded to the hull front is visible, confirming hull front was improved. https://i.imgur.com/WjesGJq.jpg [^] M1A2SEPv1, again weight simulating plates, also on the hull front, showing improved armor. https://i.imgur.com/l7mbQUv.jpg [^] M1A2SEPv2, again, weight simulator on the hull front. https://i.imgur.com/R6JlGoo.jpg [^] Another M1A2SEPv2 prototype, again weight simulating plate visible on the hull front. https://i.imgur.com/Ls9873s.jpg [^] M1A2SEPv3, again, weight simulating plates, this time improvement is massive. Also confirmed by documents : https://i.imgur.com/HrjtYB3.jpg [^] https://i.imgur.com/lAESgiU.jpg [^] And here I have a photo of the hull front being opened (external steel plate is cut off) to replace old armor package for the newer, improved one.

Issue History
Date Modified	Username	Field	Change
2021-12-05 22:27	Js2t	New Issue
2021-12-06 17:03	Damian	Note Added: 0011981
2021-12-09 09:06	reyhard	Status	new => closed
2021-12-09 09:06	reyhard	Assigned To	=> reyhard
2021-12-09 09:06	reyhard	Resolution	open => no change required

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