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  1. It's rarely pointed out because it is an absolute load of bullshit, and most self respecting people have enough of a brain to not embarrass themselves in public by making such inherently absurd claims. Clearly you either have no brain or no sense of self worth if you are willing to put your name behind such an incredibly stupid line of thought. Let us take, as a starting date, the year 1943, as that is nicely mid-war. At that point in the war, the Western Allies were largely engaged in the Tunisian campaign, where other than defensive actions the entire battle of the Mareth line was decid
    10 points
  2. Object 219M with Burlak turret, without APS
    9 points
  3. Already before WW2 Czechoslovak industry rutinely produced heavy extremely thick armoured cast pieces, especially observation cupolas and firing posts for the fortifications. To my knowledge at least three companies were supplying them in hundreds (Steel works in Vítkovice, Třinec and Škoda in Plzeň). They had a lot of experience from working on armoured parts for Austro-Hungarian fortresses and navy (basically all heavy machinery of A-H Empire was enherited by Czechoslovakia). The mass-produced armoured cupolas for Czechoslovak interwar fortiffication had 150-300 mm thickness (pe
    7 points
  4. Just a gif ofT-14 firing and ejecting spent case, stolen from otvaga
    6 points
  5. ROKMC M48A3Ks of the 2nd Marine Division on maneuvers sometime recently in 2021 according to the title of the video.
    6 points
  6. 6 points
  7. More info on DM73, KE2020Neo, Rh130mm and MGCS. - Super confirmed that DM73 is the same good old DM53/63 projectile and sabot but with more powerful propellant. Existing DM63 rounds can be upgraded to DM73. 8 Percent performance improvement over DM63. - KE2020Neo will get a new "DM" designation in 2-3 years, mass production expected for 2025. Entirely new design both for projectile and sabot. Design is not yet finalized. - There is not enough info currently to simulate T-14 armor for trials and experiments with the new ammo. - Rh130 has 50 percent more chamber volume than 120mm, an
    5 points
  8. Bismarck wheeled Tank from behind
    4 points
  9. https://breakingdefense.com/2021/04/omfv-why-small-biz-mettleops-has-a-shot/
    4 points
  10. https://www.airspacemag.com/military-aviation/bazooka-charlies-grasshopper-180974445/ Bazooka Charlie and his Piper Cub went tank busting in that battle that Delete here claims never happened. The restoration was finished last year.
    4 points
  11. Man, millions and millions of automatic gearboxes in past eighty years all around the Globe have been equipped with torque converter. If you never heard about the most common coupling solution in automatic gearboxes, it means without any doubt that you have zero clue about transmissions and since differentials are rather difficult topic to grasp I think you shall not argue about them. Even what you just wrote is simply stupid.
    4 points
  12. Soviet evaluation of Pershing in summer 1945 gives some light to the previously discussed terrain speed of Panther and Pershing. The result didn't favour Panther... http://www.tankarchives.ca/2018/03/pershing-heavy-by-necessity.html This is the measured average speed in comparison with other tanks on the same terrain track. Pershing was the fastest of them in this test mainly thanks to its torque converter. T26E3 - 18,9 km/h T-44 - 17,5 km/h M4A4 - 16,5 km/h Panther - 15,8 km/h IS-3 - 14,6 km/h Fuel consumption on the same track ho
    4 points
  13. If it doesn't count as spam, there are some pictures of the spaced-out suspension on a hybrid M4 here.
    4 points
  14. K1s and K1E1s of the 5th Infantry Division conducting training at the Darakdae Training Center.
    4 points
  15. Beer

    Scale Models Megathread

    Not being a pro at all, just building some paper stuff for fun from time to time. Here a couple of 1:35 (T-30 and LT vz.38) and a couple of 1:50 (T-50 and P-26/40).
    4 points
  16. Idk about IJA, but the practice has become a lot more common with the JGSDF. TKG is the most common way to refer the main cannon of armored vehicles. Basically TanK Gun. Usually it's just the XXmmTKG, but I've also seen the Type 10 cannon called 10TKG to differentiate it from the 120mmTKG of the Type 90. AFV's themselves on the otherhand really only receive this style of abbreviation from the Ministry of Defense rather than the JGSDF. ie: 90TK, 74TK, 89FV, 11CVR, 16MCV. https://www.mod.go.jp/gsdf/equipment/ve/index.html This nomenclature is frequently
    4 points
  17. https://helda.helsinki.fi/bitstream/handle/1975/8020/ECO031.pdf;jsessionid=1D4F492F19FEAAE2F3ECAA7A5A2BEF66?sequence=3 A paper outlining a bunch of methods for calculating tire/track pressure on soil. This includes the original MMP formulas.
    4 points
  18. Oh this whole thing has been just delightful. Let's do a quick mid-season recap, shall we? It started with Beer making an observation (which he's actually rather well qualified to support, not that you'd know because you don't actually pay any attention at all to who you're talking to), and you claimed his observation was conjecture, and packaged this with an amusingly ignorant oversight (which any eleven year old tank game enthusiast would know, let alone someone who preens and struts about as if he were a german tank expert) about the Pz.38(t) n.A. Specifically, you didn't know it existed
    4 points
  19. Great update courtesy of DTR: https://defencetechnologyreview.partica.online/defence-technology-review/dtr-apr-2021/flipbook/11/
    4 points
  20. I just find it very amusing that MAN was able to submit a vehicle that did not meet the hard requirements (the 5cm gun), and still managed to win. That is some grade A favoritism.
    4 points
  21. That's a good question, and I'm not sure. Per the spec sheet N-L-M posted, it is a solution hardening (which is the same thing as "age hardening;" metallurgical terminology is nonsense sometimes) alloy. I bet that small titanium addition is what's doing the trick. So the precipitation hardened part could be reset. However, it also has a bit of carbon in it, unlike a lot of other maraging steels. If you tried to "reset" the heat treatment, that carbon could cause some problems. Some carbides form at higher temperatures than the intermetallic precipitates, and if the metal is ho
    3 points
  22. Because, as I stated in my sarcastic suuuure line, the final drive is a very small target (and it's only exposed from some angles!). You'll note other armies have a conspicuous lack of 'oops all our final drives were hit by arty what a shame'. So either the man is bullshitting as to why the final drives broke, or the allies are actually putting their very best marksmen on artillery teams - with strict orders to aim only for final drives. It's rather comparable to exclaiming that the enemy was scoring nothing but headshots on your infantry. You'd think the Germ
    3 points
  23. Why yes, I do. Lets open it up. Nothing to suggest the incident in October 28th was anything but an above-average batch. Final drive complaints come back when fighting with the 654th picks back up in November.
    3 points
  24. It uses a mix of medium and high frequency induction heating. With the device they patented, they are able to treat sections of steel up to 3m in length (which is a pretty big deal since it's usually hard to get NC steel plates that large). Talks about the quenching liquid and cooling rate to prevent cracking, but doens't mention which liquid was used, but does mention that Matensite does form in the cooling process. Talks about maintaining the correct space between the induction heater and steel plate and methodology to maintain that distance despite possible warpage from the heating process.
    3 points
  25. I covered Kamaz chassis that was used for Pantsir, there is an interview somewhere on this forum with soldiers that drive that truck. They drive it carefully, because it have noticeable height and not wide enough, with heavy components on top of the vehicle. Originally Pantsir system was mounted and tested on BAZ-produced truck, which had wider base and lower height of SHORAD module. Perfomance of this system depend on target type, integration in AA network and used counter-measure against it. System wasn't really designed to take out certain types of drones, although i remember
    3 points
  26. Broke: The Brad is the worst IFV and can't do any mission properly. Woke: the Brad is the best of all the IFVs of its vintage and is de facto the yardstick by which all others are measured. Bespoke: The Brad is such an unbelievably good design that it can only be replaced by another Bradley.
    3 points
  27. AMPV with a turret but for arguments sake yeah.
    3 points
  28. Collimatrix

    General AFV Thread

    I'm not sure if strong conclusions can be taken from that one video. Different ammo types produce radically different amounts of recoil. Discarding sabot training ammo doesn't produce too much recoil, while HE-FRAG is firing a big, heavy shell with a lot more momentum. Aside from that, it occurs to me that the 120mm armed tanks listed are all heavier than the 125mm armed ones, although the weight of the K2 and T-14 overlap. How a tank responds to the recoil of its gun firing is a function of the total momentum of the shot, the mass of the vehicle, the moment of inerti
    3 points
  29. 3 points
  30. T-90A protection KE 715-725mm, CE 1100mm
    3 points
  31. K1A2s, K30s, and K200s of the 30th Armored Brigade training at the Seungjin firing range on the 8th of this month.
    3 points
  32. 3 points
  33. Cockerill themselves don't make ammunition, Mecar (now part of the Nexter group) does, but the Nexter ammunition catalog does not contain any 90mm for the M3 family. It does, however, contain many ammo types for various Cockerill 90mm guns, including the spicier ones, and presumably transplanting those projectiles (perhaps with driving and obturating band modifications) onto the correct case would not be a hassle. Incidentally, the Nexter catalog lists penetration for the M690A1 APFSDS for the high pressure Cockerill 90mm mk 8 as a NATO single heavy (150mm at 60) at 2000m. Reg
    3 points
  34. Since we got to the topic of the fortiffication cast elements in another topic I'm giving here what thickness of what in which resistance class was used and what those were supposed to withstand (by mid 1930' technology). I'm listing only what could be hit from enemy side. As mentioned elsewhere the known requirement for the steel was 550-700 MPa tensile stregth and ductility 14-17%. Per recent analysis of one cupola the hardness was 177 HV 30, i.e. 169 HB. The required compressive strength of the concrete was 450 kg/cm2, i.e. 44 MPa. Early object had less, some only around 30 MPa
    3 points
  35. Yeah a lack of Mo, Ni, and B limit the hardenability of the steel, particularly at the core. Good quantity of Mn, which means impact properties should be good. More phosphorus and sulfur than would normally be recommended, but the Mn should help with that. The Al is presumably left over from deoxidation. A hardness of 169 BHN corresponds to around 570 MPa yield, which is indeed fairly soft and weak for armor steel, but that's somewhat typical for fortifications where weight was less of an issue than the ability to take multiple repeated hits.
    3 points
  36. Laser Shark

    The Leopard 2 Thread

    KMW has established a new website to promote the Leopard 2A7NO for Norway.
    3 points
  37. A patent that looks like it might be for the SU-57 air intake: https://patents.google.com/patent/RU2460892C1/ru Very interesting shock wave geometry.
    3 points
  38. You categorically do not understand what you're talking about. That's not the theory at all. I'm slightly curious if you read this nonsense somewhere or came up with it on your own, but only slightly curious, so please don't belabor me with a large amount of detail. Having more points of articulation on a suspension does not affect the force experienced by the chassis or crew. When the tank is at rest the road wheels will exert the tank's weight against the ground via the suspension springs. When the tank is going over an obstacle, the vertical component of the acceleration
    3 points
  39. HJ-16, claimed specs: -8-10 km range -entire system (launcher, missile, control unit) weighting 28kg together. -dual mode guidance/launch modes: fire and forget, wireless datalink control, i.e. operator can steer the missile after launch, which enables it to be used as a suicide drone and attack targets hidden behind cover -top-attack, impact at a 55 degree angle
    3 points
  40. 3 points
  41. LoooSeR

    Bash the F-35 thred.

    JSM prototype in F-35A
    3 points
  42. Don't hold me on this but as far as I know, there was a picture of a brochure of DM53 posted sometime in the past on the net where it said the penetrator body was 685mm though I don't remember if it also said anything about the diameter; Regardless of this, i think comparing DM53 to Type 10 AFPSDS is a bit of a moot point and it would do us better to compare DM53 to M829A1/2 which both have 680x22mm and 690x22mm penetrators respectively in a projectile body roughly ~760mm long (though it's 779mm long in total). There's also the case of yet another, I believe Rheinmetall
    2 points
  43. SH_MM

    General AFV Thread

    The recoil length is 340 mm for the L/44 and L/55 guns with a hard stop at 380 mm. Only the L/47 LLR (light low-recoil) has a recoil length of 500 mm.
    2 points
  44. Cost and simplified logistics will likely be their primary advantages.
    2 points
  45. Photos from my trip to Krasnodar region to father's relatives in late December 2020/early January 2021. Later will post more, from different locations i visited there. Pulkovo airport. Our plane was scheduled for night take off, airport was nearly empty. Destnation of first flight was to Moscow, where we (father, sister, me) would change planes to one to Krasnodar city. Novokubanks. Small town near Armavir. Basically a no-name town somewhere in Southern part of Russia.
    2 points
  46. 2 points
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