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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. Posted on otvaga, found docs about Armata soft-kill APS. System type is reffered as SPN (anti-targeting system). Kit have 4 integrated sensors (multispectral) of working rocket engines and laser illumination detectors. 4 detectors combined create full coverage of upper hemisphere of vehicle. SPN was designed to not give away vehicle when it was turned on and working, so it uses only passive sensors. On scheme 1 is detectors, 2 are PPU (rotatable launchers) and 3 are 2 vertically aimed PUs (stationary launcher).
    9 points
  4. 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
  5. Just a gif ofT-14 firing and ejecting spent case, stolen from otvaga
    6 points
  6. ROKMC M48A3Ks of the 2nd Marine Division on maneuvers sometime recently in 2021 according to the title of the video.
    6 points
  7. 6 points
  8. 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
  9. Beer

    The MiG-23 Thread

    It makes no sense to compare MiG-23 with MiG-25. Those are planes of different category used for different tasks. MiG-23 replaced MiG-21 and it was much better than MiG-21 in everything with the exception of the initial MiG-23S batch with RP-22 radar and armamament from MiG-21 (and the cost) and the Arabic "monkey" export model MiG-23MS which had the RP-21 radar and armament from MiG-21. Also the other comparisons are strange... GSh-23L has muzzle velocity 715 m/s and it's much more interesting feature is its operating principle since it is one of the only two operationally used G
    5 points
  10. 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
  11. If it doesn't count as spam, there are some pictures of the spaced-out suspension on a hybrid M4 here.
    4 points
  12. K1s and K1E1s of the 5th Infantry Division conducting training at the Darakdae Training Center.
    4 points
  13. 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
  14. 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
  15. 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
  16. 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
  17. Great update courtesy of DTR: https://defencetechnologyreview.partica.online/defence-technology-review/dtr-apr-2021/flipbook/11/
    4 points
  18. 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
  19. https://www.army.mil/article/244447
    4 points
  20. 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
  21. 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
  22. 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
  23. AMPV with a turret but for arguments sake yeah.
    3 points
  24. 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
  25. T-90A protection KE 715-725mm, CE 1100mm
    3 points
  26. K1A2s, K30s, and K200s of the 30th Armored Brigade training at the Seungjin firing range on the 8th of this month.
    3 points
  27. 3 points
  28. 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
  29. 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
  30. 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
  31. Laser Shark

    The Leopard 2 Thread

    KMW has established a new website to promote the Leopard 2A7NO for Norway.
    3 points
  32. 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
  33. 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
  34. 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
  35. 3 points
  36. LoooSeR

    Bash the F-35 thred.

    JSM prototype in F-35A
    3 points
  37. LoooSeR

    Israeli AFVs

    Namer with unmanned turret, possibly during testing in army unit.
    3 points
  38. TWMSR

    French flair

    Great idea It is so silly to put parasitic mass into design, why do not use zero-mass sabots instead? And why waste so much energy on muzzle blast? All energy should go into penetrator, it must be easy task.
    2 points
  39. Photos on a subject Parade vehicle Vehicle that was going through tests. Driver is in front of rest of the crew.
    2 points
  40. ZBD04 (not ZBD04A, I think you guys call it ZBD08?) also don't have a thermal sight. For a pretty long time ZBD04A is the only ifv equipped with thermal sight in the PLA arsenal. For tanks, ZTZ-96A and ZTZ99's sight is pretty much T-90A level (one for thermal and one for daylight, just like ESSA+1G46M on T-90A). ZTZ-99A and VT4 has something similar to SOSNA-U, a multi channel combined day/night sight.
    2 points
  41. In our time, us old salts have seen dumber things come crawling out of the muck and mire that is German tank discourse. But this one is still all kinds of stupid. It's sort of endearing, really: the inbred, brachycephalic version of an intellectual swamp creature.
    2 points
  42. This is Kätzchen K2. The second Auto-Union test vehicle used for comparison of suspension variants (K1 had Kniepkamp suspension). It has nothing to do with he final vehicle which was ordered from ČKD/BMM. The hull has zero common with Pz.38(t). I have never implied that leaf springs were a thing of the future. I have claimed interleaved wheels were absolutely not (I can't see how you still can't understand it even when next 80 years showed clearly the truth). And that is a big difference. Simple sturdy leaf suspension of 38(t)/(d) simply worked, it was cheap, reliable and easy to
    2 points
  43. kinda comparsion of 3 photogrammetry scans... size can be a little off, but not much
    2 points
  44. Sorry it was referred to as a white paper elsewhere but yeah its only slightly less vague than the defense review itself. At least the name Challenger 3 is finally confirmed by the government.
    2 points
  45. Few more shots from the autumn trips with a new phone. The so-called Mácha lake and the countyside of the Česká tabule vulcanic hills in the northern Bohemia. Bezděz castle can be seen on the very right, Ralsko vulcanic mountain with another (small) castle ruin on the top is on the very left. In between there is Ještěd mountain barely visible on the horizont. The land of castles. The view is taken from the ruins of a small Oltářík castle towards the magnifficent Házmburk castle (the two towers on the right) and on the left there is another castle ruin called Košťá
    2 points
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