Wiedzmin Posted March 6, 2024 Posted March 6, 2024 22 hours ago, Bichri001 said: textolite, not ceramics like on the late T-80U(D) models? Inside polyurethane, ceramics was never used on serial vehicles, only experiments was done, mostly with turrets, but some hull arrays also was tested afaik
old_goat Posted March 12, 2024 Posted March 12, 2024 An iteresting video about the electric ingiter GUV-7, how it works, (including a little experiment), and also about why misfires are so dangerous, especially with old, expired ammunition.
alejandro_ Posted March 14, 2024 Posted March 14, 2024 Russian ambassador to India has stated that almost 1,000 T-90s have been produced under license. https://www.aex.ru/news/2024/3/14/268742/ Just top recapitulate, in the past India signed contracts for 310, 330, and 347 to be delivered after assembly and in kits. A license agreement for 1,000 tanks was signed in 2006. In 2020 it was extended to 2028. Latest contract for 464 T-90MS was signed in 2019. HVF should be producing these under license.
Perun Posted March 18, 2024 Posted March 18, 2024 nice literature you have, thanks for sharing 😉 5 minutes ago, Wiedzmin said: 1964 USSR, one of first ERA trials 😉
Bichri001 Posted March 21, 2024 Posted March 21, 2024 Would this Kontakt-1 on Relikt setup even work effectively? I always thought that stacking Kontakt-1 on Kontakt-1(or any ERA on ERA) would disturb the moving pattern of ERA plates, was my thinking wrong?
Gavin-Phillips Posted March 31, 2024 Posted March 31, 2024 What an amazing place that would have been to visit, Kiev's BTRZ. Thanks for sharing the video.
old_goat Posted April 6, 2024 Posted April 6, 2024 16 hours ago, Wiedzmin said: T-62M sight operations, very rare This is awesome, thank you for posting it! I always find it funny that this sighting system is more advanced than the TPD-K1 in T-72... Too bad the video doesnt show the lead calculator display in operation at the bottom of the sight picture. Actually, I modeled this system in a game (although for T-55AM). I found the range scale significantly harder to read than in older TSh-2 sights, until now, I thought it is because its a game after all... But turns out it is not better IRL. Fortunately there is a separate range display for Volna FCS, so it is possible to check the range quickly if needed.
Stefan Kotsch Posted April 7, 2024 Posted April 7, 2024 17 hours ago, old_goat said: I always find it funny that this sighting system is more advanced than the TPD-K1 in T-72... Why?
Gavin-Phillips Posted April 7, 2024 Posted April 7, 2024 What model of sight are we looking at here in the T-62M? TShSM-41U or something else? For someone like me who has never looked through the sights of a tank, this is all very intriguing stuff to be honest (as well as being a fan of the T-62 in general).
Stuart Galbraith Posted April 7, 2024 Posted April 7, 2024 On 3/21/2024 at 2:59 PM, Bichri001 said: Would this Kontakt-1 on Relikt setup even work effectively? I always thought that stacking Kontakt-1 on Kontakt-1(or any ERA on ERA) would disturb the moving pattern of ERA plates, was my thinking wrong? The latter photos was put in place for a delegation of US Senators that were visiting a Soviet Motor Rifle Division. The conclusion that was come to is that it was either a joke (in which case it was pretty funny) or a lame effort at disinformation. As you can see from the pictures, the bricks would blow the view out of the commanders cupola, and were judged unlikely to work in that configuation anyway. Looks good thought...
old_goat Posted April 7, 2024 Posted April 7, 2024 5 hours ago, Stefan Kotsch said: Why? It has a built in lead calculator system. TPD-K1 didnt have that. Only later, with the T-72B, the UVBU add-on lead calculator system was introduced. And also the BV55/62 ballistic computer can work with more data than the TPD-K1. Dont know how much does this matter in practice, since all of those data can be set only manually. 3 hours ago, Gavin-Phillips said: What model of sight are we looking at here in the T-62M? TShSM-41U or something else? TShSM-41U.
Gavin-Phillips Posted April 7, 2024 Posted April 7, 2024 35 minutes ago, old_goat said: It has a built in lead calculator system. TPD-K1 didnt have that. Only later, with the T-72B, the UVBU add-on lead calculator system was introduced. And also the BV55/62 ballistic computer can work with more data than the TPD-K1. Dont know how much does this matter in practice, since all of those data can be set only manually. TShSM-41U. Thank you.
Stefan Kotsch Posted April 7, 2024 Posted April 7, 2024 (edited) I think a comparison of TPD-K1 and FCS VOLNA is a bit unfortunate. If compare, then FCS 1A40 (TPD-K1 with lead calculator) and FCS VOLNA. The 1A40 and VOLNA entered military service at about the same time. And the VOLNA computer calculates the same values as the 1A40 calculator. But VOLNA has a serious disadvantage. The laser is attached to the gun cradle. Therefore, the laser cannot be used while the loader is working. And until then the computer doesn't receive any data. And when the gun is stabilized again, the LOS stabilization is no longer independent, but dependent on the gun again. Also a big disadvantage compared to the 1A40 FCS. 2 hours ago, old_goat said: the BV55/62 ballistic computer can work with more data than the TPD-K1 But this only applies to lead and cross wind. Temperature of air and propellant, air pressure and barrel wear can calculated from the computer of the TPD-K1 and also VOLNA. Edited April 7, 2024 by Stefan Kotsch
old_goat Posted April 7, 2024 Posted April 7, 2024 1 hour ago, Stefan Kotsch said: . But VOLNA has a serious disadvantage. The laser is attached to the gun cradle. Therefore, the laser cannot be used while the loader is working. And until then the computer doesn't receive any data. hmmm, I didnt think about this... Yes, it can be a problem when the gun is reloading. btw, now that we are talking about the modernized gunsights of T-55/62... Do you know how the lead calculator works on the earlier TShS (that without Volna FCS) ? I know that after lasing the target, the gunner presses a button, stops tracking, meanwhile a LED lights up in the sight and when that goes off, he can see the lead he needs to apply. This is okay. But what I do not understand, is how does the system know what kind of ammo is loaded? I didnt see any selector switch. Or it is configured only for a single ammo type, lets say APDS/APFSDS?
Wiedzmin Posted April 7, 2024 Posted April 7, 2024 10 hours ago, Stefan Kotsch said: Why? common belief on post-soviet territories, nothing more
Stefan Kotsch Posted April 8, 2024 Posted April 8, 2024 16 hours ago, old_goat said: Do you know how the lead calculator works on the earlier TShS (that without Volna FCS) Hmm, that's unknown to me. I only know FCS VOLNA. What information do you have about this unknown system?
old_goat Posted April 9, 2024 Posted April 9, 2024 20 hours ago, Stefan Kotsch said: What information do you have about this unknown system? It is actually a very simple system, just a laser rangefinder added to a manually adjusted sight. The only thing I do not fully understand is this strange lead calculator.
old_goat Posted April 9, 2024 Posted April 9, 2024 (edited) 1 hour ago, Stefan Kotsch said: @old_goat Can you cite any sources? This is all I have: First, obviously your site http://www.kotsch88.de/f_t-55am.htm Then there is the tankograd blog. I may be wrong, but in my opinion there is some confusion there. The blog mentions it by the name of "TSsSD-41U", but I didnt find anything about this on russian sites. What the blog described there is simply the TShS-41U I think. https://thesovietarmourblog.blogspot.com/2015/12/t-62.html#tshsd And finally, there was an old russian forum, where the gunsights of T-34 and T-55 were described. (pictures do not work anymore sadly) The author explained here how the TShS works, but still it isnt known how the sight calculates required lead, what ballistic data does it use. http://old.sukhoi.ru/forum/showthread.php?t=29125 Edited April 9, 2024 by old_goat
Stefan Kotsch Posted April 9, 2024 Posted April 9, 2024 (edited) Hmm, can't find anything about the 'simple' system. I'm only acquainted of the VOLNA FCS. @ There may be a misunderstanding here. VOLNA is available for T-55 and T-62. And without VOLNA with its ballistic computer there is no lead calculation. Edited April 9, 2024 by Stefan Kotsch
old_goat Posted April 10, 2024 Posted April 10, 2024 19 hours ago, Stefan Kotsch said: And without VOLNA with its ballistic computer there is no lead calculation. Yes there is. But in a rather primitive way. I forgot to add one more source, it is the 1982 manual of the T-54M tank, also fitted with KDT-1 laser rangefinder, TShS-32PVM sight, but no Volna FCS. There is some general description on page 224 how the lead calculator works, but its actually the same as written above on the sukhoi.ru forum archive. No details how exactly the system works. Look for this: Танк Т-54М техническое описание и инструкция по эксплуатации 1982 год If you wish, I can upload the page from the book that describes the system.
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