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Kal

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Everything posted by Kal

  1. Kal
    Re: Merkava It is an object of the present invention to provide a non-explosive energetic material suitable for NxRA which does not contain explosive material and fulfills its protective function (high efficiency and high survivability of the armor), whilst the non-explosive energetic material lowers the requirements of transportation and logistics according to various standards e.g. UN regulations as appearing in the Recommendations on the Transport of Dangerous Goods. [0014] It is a further object of the present invention to provide an armor element fitted for such an energetic material and where the armor is of comparable efficiency to SLERA and of comparable survivability to NERA.
  2. Kal
    The turret of the armata suggest to me postage stamps of ERA. I was contrasting that to the block bricks of soviet ERA. Postage stamps being thin ERA. There are demonstrations using just the explosive inserts, upon thick steel. Something more akin to that.
  3. Kal
    Ive yet to see clear definitons of 'middling' reactive armour. My understanding of SLERA is that it is essentially ERA, but the compounds/assembly make it technically not ERA. Similary to how ANFO is not high explosive but is a blasting agent instead. Or how a high explosive if stored at less than critical diameter might not be 'high explosive'. Basically its a arbitary definition, according to a rule, so to prioritise storage and handling procedures and laws.
  4. Kal
    I dont think russia would use the perforated steel for the leading steel plate, but it is a option. Perforations are much cheaper now than historically. I do think russia will use their new steel, if it the same/similar chemistry as the old steel, but ran through a special roller, then the cost increase is small, in particular, the cost is sunk anyway and the incremental costs of using special rollers is probably less than the the benefit of higher strength. I do think they will upgrade the rubber interlayer, cost is neglible and reward is great. I suspect that russia would make the rear flyer plates out of titanium, just because its Russia, and its a suitable application. In general, with 5 sandwiches, newer tech is probably cheaper than 6 sandwiches of the older tech. With 6 sandwiches, newer tech can be thinner than the older tech. Either way, they are going to use ultrafine steel in there.
  5. Kal
    Off topic, but UK tata PAVISE is a good example of technological metalurgy improvements significantly reducing costs.
  6. Kal
    Whose apfsds? Pakistans or india? For many operators this armour is simply overmatch anyway. + russia really likes her ERA, this t14 is going to have era postage stamps all over it. I havent found a good paper comparing apfsds vs perforated armour. My intuition is that perforated armour works best when its holes/slots are optimised against a design projectile caliber. Also that the angle of the perforations can also have a large influence. Some of metallurgy improvements are costly, others are low cost, others still reduce cost. Obtaining fine grain by special rolling is not high cost at all, just specialised. But the benefits dissappear upon further heat treatment or welding. So its suitable for applications like bulging plates, covers and body armour, but NOT for applications involving wide re anealling. Would i design the armour to be like the t72b/t90 derivatives above? No. But i sure would test ammunition against the t72b/t90 derivative above. Its a baseline for simpliest technological progression for the armata t14.
  7. Kal
    This t72b/t90 derived armour would be equivalent to entry level heavy armour. Its what a current t90 operator like india or egypt could use if they wanted to. What russia could do to improve it includes. Steel - Special rolling techniques, presumably this is what upgrades the 44s sv sh to be 'ultrafine' Should be able to use approximately same steel (t72b/t90) but improve both hardness and toughness, thus the 15% weight reduction (less steel used). Still artic friendly. Upgrade rubber interlayer to more energised compound, many options, an earlier israeli patent displays that highest decomposition but adequate stability is desirable. Upgrade the rear flyer plates to titanium. Can also use similar advanced rolling techniques. Make intitial front steel layer perforated steel, can save upto 50% weight. These all maintain the current design, just upgrade individual elements (or reduce weight)
  8. Kal
    0.615 (los steel) x 2.3 (width) x 0.8 (height, lessor guess) x 7.8 = 8.8tonne 0.663 x 2.3 x 1.0 x 7.8 = 11.9 tonne So approximate range for front upper glacis armour is between 9 and 12 tonnes, using assumptions above. That is heavy.
  9. Kal
    I would consider the rise of aerial drone warfare to make this a sensible solution. Whether on same vehicle or adjacent vehicle (t-15 with 57mm) But as main gun doesnt elevate to AA, the coaxial needs additonal elevation. We live in a world where mining's electronic millisecond fuzes cost about $20. So sooner or later it will be normal for a 57mm round to all come with those, so airburst becomes ubiquitous. So far only israel see fit to keep a 60mm mortar on tank, so my guess is that only israel would add a similar caliber gun to a tank. Others would keep it as an additional vehicle. Looking at syria conflict, a t 15 with 57mm couldve been so useful, tank round sniping vs individual infanty is here to stay, do we need 125mm rounds for that? What about future 130/140/150mm rounds?
  10. Kal
    Weight guesses for t14 armata. The numbers banded around seem to be 48 tonnes and 57 tonnes. Personally i suspect 57 tonnes is more realistic (as its a longer tank and probable keeping the similar ground pressure as t90.) What do others think? A modern 57tonne, tank with hull only manning sounds significantly more survivable than a less modern 48 tonne tank witb conventional turret.
  11. Kal
  12. Kal
    Most of China's contested territory is either mountains or islands. When i saw that lynx, i immediately thought how useful for either side it would've been for india/pakistan mountain skirmish. (Followed by, what a great platform for development of robotank. I wonder if logistics make it a cheaper robotank than reuse of excess type59 tanks)
  13. Kal
    And furthet details about these cast titanium cassettes? The polish ERA does seem quite a sensible solution, so it would be intetesting to see what they are up to now. (Polish ERA tends to use a high brisance explosive, which is great for defeating the tip of a Shape charge jet, but relies on the cassette assembly to stop bullets from detonating the ERA). it kinda reminds me of a flak jacket with a layer of high explosive glued to the back!
  14. Kal
    So, an outer layer of 'razors' that look like flimsy steel meant to deform before penetration. A backing layer of cast 'something' in a box. Perhaps its concrete, or a rubber/pebble mix. This could just be some type of externally applied bulging plates armour.
  15. Kal
    So it looks flimsy, slightly inclined, Is this some type of nera? Using a mesh/slats would've been cheaper just for standoff, so its more than that?
  16. Kal
    Not with ifv, apc Same ceramics, Replace lightweighting aluminium, magnesium, titanium, fiberglass with good steel, weight up, armour up, cost down. Take a namer, change the steel to aluminium and the weight would drop drastically. Cost would increase Take a korean k21, change the aluminium to steel, weight would increase, not so much cost.
  17. Kal
    To some extent, families of vehicles are also divided in cost class. So namer is a fair comparison, for users who have not airlift as important.
  18. Kal
  19. Kal
    North europeans? South african? Aussie? Their hats look like different origins.
  20. Kal
    So, a paper carnival, and a near paper panzer. Is there a disconnect between what australian defense thinks the world will offer. Vs what the world thinks australian defense wants?
  21. Kal
    Is that a CV90 with twin 120mm mortar with a funky muzzle loading mechanism that make it look like 4 barrels?
  22. Kal
    Now, thats an IFV.
  23. Kal
    Reminds me of a boat, amphibious capacity. Even if they 'lose' the bulk of land 400 phase 3, they might still get to place 50-100 units. Its a serious contender. Can it swim 12nm?
  24. Kal
    That looks a lot wider than standard kf21. Is that nera/era/ floaties on the sides?
  25. Kal
    Interesting detail there for the door and armour. Any guesses as to what the panel consists of?
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