Andrei_bt

27 minutes ago, Collimatrix said:

 

 

Do you have a link to the entire chart?  I googled for it, but in vain.

 

IIRC, it had some strange ideas, like M47 was slightly better than M48.  But I would expect the Soviets to have a pretty good idea about their own tanks.

http://btvtinfo.blogspot.com/2017/10/blog-post_16.html

http://btvtinfo.blogspot.com/2017/08/blog-post_14.html

and

http://btvtinfo.blogspot.com/2017/10/blog-post_12.html

On 6/7/2018 at 10:53 PM, Collimatrix said:

Are you going to cover that never-made variant of T-64 that the T-80U turret design is taken from?

Why never made?

So called "T-80U"  turret was designed for T-64B

24 minutes ago, skylancer-3441 said:

there was some discussion on the Otvaga forum about BMP-3's protection, starting with this message (and then going for more than an entire page,) which says that it's frontal armor can withstand 30mm 2A42's AP from 300m at +-40 degrees, and side armor can withstand 7,62 B-32 from 0 m at 90 deg, 

and it seems like BMP-3's sides without additional armor are protected against 12.7 B-32 at some distance - only at angles that are much smaller than 90 deg.

 

BTW, it has been claimed https://imgur.com/a/2Ua7OkE that to withstand 12.7mm B-32 from 100m at 90 degrees one needs 70mm thick layer of same ABT-102 as BMP-3 has (and it is known that it's side armor only 43mm thick).

BMP-3 protection

http://btvt.info/5library/vbtt_1991_bmp31.htm

Compared with the "Abrams", "Leclercs" and "Leopards"

Borisov believes in strange VNIITM reports - 

http://btvt.info/1inservice/rarn_sravnenie2006.htm

On 7/15/2018 at 11:23 PM, Militarysta said:

1984, Leopard 2 in soviet report:

 

 

 

As we can see - Soviet assume Leopard 2 armour in 1984 on 400-450mm vs KE and 550-600mm vs HEAT

 

 

What is the source?

The welded turret of such shape was really developed in 70-s

Not ATGM, mine clearing charges

14 hours ago, Met749 said:

Tests with many K-1 layers shows low efficiency, so it was a bad experiment

Which tests?

On 5/7/2018 at 7:02 PM, AndreyKryuchenko said:

 

Yes, it looks like Bulat.

 

And BRM-3 "Rys" also has a radar.

It is Shipunov's conception of "Ideal" weapon - so called "smart bullet", in reality a beam riding small missile with not CE, but high speed kinetic warhead (along the round). Designed for use by a single trooper or as add-on weapon for IFV and so on.

 http://btvt.info/3attackdefensemobility/rarn_shipunov.htm

yes of course, it is a german patent, I will find it's number tomorrow and post, as I remember it was early 90-s

Suppose they had plans for ERA and "reflecting plates" also -

On 4/14/2018 at 7:42 AM, EnsignExpendable said:

@Andrei_bt posted this archive on Livejournal, I'm going to share it here. This folder has the English language documents and books, if you go one up there's a ton of Russian stuff. The server is very wonky, so if you download anything (click the checkbox and then Скачать in the toolbar above) only do one or two docs at a time. Also the site periodically 404s, but it always comes back.

Hi, I did not posted, just shared. Not me.

Great blog! I Like it)

No problem with Watermarks !

2 hours ago, Molotav_DIGITANK said:

This is my blog , I was not very  familiar with this platform at that time, the system put Watermarks automatically but I didn't know about it, if necessary I will delete this post, sorry about that.

No problem!

Ukraine has it's own Black Eagle ))))

Thank you!

Thanks! Not only "diesel package proposed by General Dynamics a couple years ago"  also 70-s era competition.

Mostly train of gears of transmission.

Great ! Thanks! Looking info about Abrams diesel engine transmission.

How T-80U-UD armor "works" - http://btvt.info/5library/vot_yacheiki.htm

41 minutes ago, Stierlitz.Dango said:

Fuel Cell composite armor is believable....

And talk about fuel cell armor，i've heard an interesting design. Few years ago Chinese enginner has built a special fuel cell composite armor which uses Oplot-M ‘s design as reference.

With the similar principle, filling diesel in the cell wall structure actually worked like an ERA and successfully weakened a HEAT testing warhead which capable of penetrating 280mm to 160mm by only 20mm thick of fuel cell armor.

Actually it is a well known idea used in "cells" armor developed by hydrodynamic institute of Siberian departament of academy of scince of USSR in 70s. http://btvt.info/5library/vot_yacheiki.htm

Quote

CAWA-2 armour was tested for never build PT-97 and "Gorilla" tank. And it was tested and "finnal" product - for welded turret and PT-91MZ Hull

ERA is another product.

 Creation of a welded turret or at least new turret requires a large ammount of "base resourses".

 A scientific "school" on welding and armour materials, it is not possible just to appear from nothing.  And  for example it was 40 years passed from t-64 welded (http://btvt.info/3attackdefensemobility/turret_welded.htm) turret to t-84.

This so called "rod" (sand rod) is used rod form a cavity in T-64  turret, then aluminum is filled into it.

 But this not a case for T-72, as the sand itself remains as filler.

https://c.radikal.ru/c38/1803/f6/3576ae39ecea.jpg[/img]

6 hours ago, Akula_941 said:

the guy who wrote Tankograd?hmm

anyway...

 

object432 has the similar support structure.but i'm not so familiar about the actual sequence of casting and product in detail.

 

It's head or lost head; feeder

You can read an article on this - http://btvt.info/5library/vbtt_1969_01_bashnja.htm

maybe translation will help (in russian)