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Lord_James

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Everything posted by Lord_James

  1. Lord_James
    @N-L-M, I’ve never seen you so aggressive; you’re usually respectful and pretty chill... everything alright? Bad day, or maybe bad week?
  2. Lord_James
    @T___A, we may have another “Chinese AFV Thread” situation developing.
  3. Lord_James
    That was my thought with my armor array: For both: front RHA disrupts projectile, followed by air to decompress and allow fragments to separate from main body, then HHA to shatter the projectile, with first group of NERA to catch whatever gets through HHA. If it survives: CE; the middle textolite and RHA plate are to slow down the jet so the second group of NERA will perform better (the geometry to make the NERA plates crosswise oriented is either a huge pain in my ass, or I have to remake my arrays for the 5th time...). KE; the middle RHA and textolite are to further erode and disrupt the projectile, and the back JPA plate to catch whatever is left. I’m also looking to use fuel tank geometry as armor (using tubes filled with fuel to do fun things, but I can’t find the study anymore ). Anyway, I’ve updated my turret (it looks either like a chubby Merkava 1/2 turret, or a long T-90A turret), with 1100mm LoS from dead ahead, and at planning on Leopard 2 or Merkava 3 style wedge appliqué as upgrade. Haven’t been working on it much though, as I am finishing my final for school, but hopefully I will have something to present before Friday.
  4. Lord_James
    What all was bombed in Sri Lanka? Most of the pictures are of a church but it looks like some other buildings were attacked too, or at least damaged from nearby bombs.
  5. Lord_James
    Guy sounds like a wehrboo; should be flogged with an M1 inspired, DU whip.
  6. Lord_James
    H&K MP-7: https://www.heckler-koch.com/en/products/military/submachine-guns/mp7a1/mp7a1/overview.html
  7. Lord_James
    By the amount of rust that’s built up, I don’t think it’s economically feasible.
  8. Lord_James
    @N-L-M: From left to right (all at 60o unless otherwise stated): 35mm RHA 61.5mm air 20mm HHA 127.5mm NERA-L (71o) 28.5mm RHA 36mm Glass Textolite 127.5mm NERA-L (71o) 50mm JPA at 1.16 TE For my calculations, I used the full K1 value for the first set of NERA, and then 1.1 for the second set.
  9. Lord_James
    a-la imgur. Sounds about right with how parliament treats their "subjects"...
  10. Lord_James
    Ok, just remade my upper right array, AGAIN, and re calculated both completed arrays: Lower Front: 1206mm CE 635mm KE Front Right: 1177mm CE 625mm KE For CE, K1 was 2 for the first group, and 1.1 for the second group. KE was 1.05 for the first group and 1.0 for the second. Both arrays can withstand Deserent 60/105 ATR and any known AP (125mm included) currently used by Cascadia, from ~30o from the front (the mock up of my side array is giving these numbers, but they're not finalized yet). Unfortunately, that BGM-1 is a monster, so an upgrade kit will most definitely be required to survive a hit from those.
  11. Lord_James
    No offense, but I don’t trust you as much as some of the other people on this forum; they have proven their knowledge. So, I’m gonna have to ask for a second opinion. @N-L-M, @Toxn, any confirmation on what I did wrong? BUT!, your response does make sense, and I probably should have considered that. Yeah, I just checked and I think I mis-clicked a button on my calculator, but it’s 113mm LoS (80mm / cos45 = 113.1), which is 1.13 decimeters. Multiplied to 1.1 gives me 1.24. I’ll make some corrections when I have time.
  12. Lord_James
    … ok... now, I am either extremely wrong, or my armor array is ridiculously good... I calculated at least 4782mm CE for the lower front array, which I find completely bananas. But I cant seem to find my error when solving for max thickness: 4782 - 63.6 = 4718.4 RHA 4718.4 / 1.3 = 3629.5 AIR (1.3 is from multiplying 1.19 [how many decimeters LoS in this section] to 1.1) 3629.5 - 70.7 = 3558.8 HHA 3558.8 / 2 = 1779.4 (2 is the k1 for NERA at 19o) 1779.4 - 55.3 = 1724.1 (12 / cos71 = 36.85 ; * 1.5 = 55.3) 1724.1 / 2 = 862.1 862.1 - 55.3 = 806.8 (it passes through 2 NERA layer) 806.8 - 40.3 = 766.5 RHA 766.5 - 33.5 = 733 Textolite 733 / 2 = 366.5 (3rd NERA layer) 366.5 - 55.3 = 311.2 311.2 / 2 = 155.6 (4th NERA layer) 155.6 - 55.3 = 100.3 100.3 - 104.7 = defeated I have a very strong feeling I did something monumentally wrong, but I cant find where I made the mistake!
  13. Lord_James
    ok, I have a question about the reactive elements in the array: in the calculation doc, it says Pr = Pi / k1 - k2 * LoSt … but using this verbatim gives me negative numbers, which isn't a good thing when calculating residual penetration. Is it suppose to be calculated Pr = (Pi / k1) - (k2 * LoSt) or maybe Pr = Pi / ([k1 - k2] * LoSt)? I just cant seem to get my NERA arrays to work with the initial formula. Anyway, I have my KE values for the 2 completed arrays: Lower Front: 590mm (593) Front Right: 730mm (734)
  14. Lord_James
    First 2 armor arrays completed. I changed around some thicknesses, and had to completely remake the first array: Lower Front Hull Array: Front Right Hull Array: New LoS thicknesses are : Lower Front: 980mm Front Right: 976mm Will work on KE and CE thicknesses.
  15. Lord_James
    Ah fuck... ok, that makes things a little harder. Was working on my arrays and now I need to revise 2 of them
  16. Lord_James
    Thank you; my adventures into the internet to find a better solution come up questionable. Anyway, in reference to NERA: do the brackets and spacers have to be mounted on structural components?
  17. Lord_James
    I maxed out mass (15000 gn) and minimized diameter (0.10 in) for JBM, while using the G7 coefficient, and I only get an extra 4 m/s at 3km. If I bump up the elevation to 4500ft (Reno, Nevada), I get an extra 50 m/s... but that's at 4500ft, and that extra penetration would be useless against the Deserent wheeled death traps and jihadyotas. If you have an alternate way to calculate drag and ΔV, I'm all ears.
  18. Lord_James
    Penetration table and velocity charts for S11-I and S21-I (velocity was calculated by multiplying 0.25 to ΔV and adding that product back Vf): S11-I: S21-I:
  19. Lord_James
    I mean it reduces the drag by 25% for as long as the burner is active (in this case: 3km), sorry for weird wording. Liquid explosives are not good in high velocity applications, as in a 155mm naval shell traveling at >800m/s.
  20. Lord_James
    per the internet: Astrolite is a liquid, and IIRC liquid explosives are not effective as high velocity bursting chrages, and RDX (the main ingredient of A-IX-2) has a comparable brisance value.
  21. Lord_James
    Ammo update: I haven't completely finished the rough draft for the weird ammo yet (sorry @Toxn), but I did finish the primary ammo types: 155mm S11-I (APCBC-HE-T) 155mm S21-I (HE-FRAG-T) C4B (800mm) semi-combustible propellant charge Both projectiles are 900mm long with a similar construction to my first shell and are spin stabilized; the propellant charge is the maximum size charge available for C4B guns (all mods). They both also contain the combined tracer / base burner as my first shell. To do: A. calculate penetration / add masses for each piece of the projectiles. B. Ask @N-L-M if 25% is a good velocity conservation modifier for a base burning artillery shell. C. Ask for the density of A-IX-2 (I want to use that instead of Explosive D for the filler). D. fix some errors I may have made (I want the burner to last for 3km [for army versions, navy burners should last out to 15km], but don't know how large to make it). PS. I used the S21 as the largest (by volume) shell to estimate my autoloader's capacity, and it turns out I can only fit 17 such shells I don't have the patience to remodel my ammo for higher autoloader capacity, so I will leave their dimensions as is.
  22. Lord_James
    @N-L-M, what is the cetane / octane rating for fuels in the DPRC?
  23. Lord_James
    I totally forgot about RAPs; thank you @Toxn. Hold onto your bagels, everybody, because I just found some inspiration for some new shells and things are about to get weird!
  24. Lord_James
    Is the reduction in penetration due to the reduction in mass and less dense materials, or is there another reason?
  25. Lord_James
    Just to clarify (because I suffer from autism): you multiply the actual thickness of the material by the TE modifier and this gives you the RHAe of that material, right?
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