Lord_James

Oh please dear lord, do not let this turn into another insult contest. 

3 hours ago, Collimatrix said:

 

 

That would work!  The total array efficiency would be somewhat less efficient than pure HHA due to the RHA holding it together, but it would be admirably efficient overall, and certainly quite thin.

 

I was thinking of arrangements where steel armor of different hardnesses is laminated together (note: this is tricky to do).  An arrangement with a harder, more brittle steel as the strike face backed by a softer, tougher steel is more protective than the sum of those two plates on their own.  An arrangement with soft/hard/soft is better still.

 

Metallurgically trickier still are laminates with aluminum bonded to high hardness steel.  I haven't read much about them, except that they're supposed to be quite good, and also a bitch to make.

@N-L-M, is laminated armor available in DPRC? 

I dont think I’ve seen anything on the process for laminating armor plates, though I do know Hot Isostatic Pressing can laminate different metals together, albeit it takes a while. 

The Gavin continues to evolve! 

I don’t understand the difference between K1 and K2 in those calculations. 

To the Honorable Diane Feinstein VIII and other nobles related to this contest, 

I have questions about the metallurgy of DPRC. As my company, Song Heavy Machine Works, has only experience in large agriculture and multi-axle transport vehicles, along with the civilian grade materials used in them, we are in need of additional information pertaining to the questions I have given below, if that is acceptable for release. In regards to weapon and vehicle design expertise, we have contacted the ‘Mann Ltd’ corporation (Ms. Hillary Mann was kind enough to send several designers, as well as research, to assist our efforts), so information pertaining to those aspects does not need to be sent. My questions are as follows: 

1. Are there Uranium or Tantalum mines within our territories; and if so, what is the level of technology for refining those metals? 

2. Are these high hardness steels brittle or are they alloyed well? What kind of alloying materials would we have available for armor grade plates? 

3. Is face hardened armor available for use, or is the industry / processes not developed? 

I may send additional queries, but for now these are our biggest questions relating to the new heavy tank. Long live the DPRC, and long live the Feinsteins! 

Sincerely, 

Song Liu-Haack, CEO and Lead Designer of Song Heavy Machine Works. 

Relevant 

Are these BMPTs actually fighting, or are they just THERE? General Patton was THERE at the battle of the bulge, but I don’t believe he fought any Nazis himself, or was in any significant danger at all. Due to the lack of media portraying BMPTs in Syria, I’m inclined to think they are just sitting around somewhere, occasionally driving somewhere else just to say “we have it in Syria”. 

1 hour ago, Collimatrix said:

I wonder how much more of an armed force could be made "elite," for whatever value of "elite" you choose, if you had sports medicine/hormone therapy/stem cell magic that could wring another 10 years of peak performance out of them.

As well as advancements in exosuit tech like in the (non exploding) infantry hardware thread. Even the passive leg and back supports that the Russians use are somewhat effective, so soldiers can carry more weight, which could mean more armor and/or sensors/equipment. Scout or supplementary combat drones would also improve a soldiers effectiveness in many combat settings. However, this would also make individual warriors more expensive, and would require more training to properly operate and maintain said equipment, which would naturally translate to fewer but better warriors. 

In general, I am part of the quality > quantity crowd, up to a point (see Battle of Thermopylae). However, as @Toxn referenced in the OP, and similar engagements I’ve heard of between SFs and irregulars/conscripts, the better trained (and equipped) forces will slaughter the opposition in most cases. With the advancements in technology (and hopefully tactics and strategy), I can only see this efficiency gap getting larger. 

1 hour ago, Lord_James said:

This is made for the UAE/Saudi right? So I guess they wouldn’t mind the non-precision rockets landing on civilians... or the crew getting roasted by a Kornet. 

Fixed

Necro (sorry), but this topic was too cool for me not to post on! 

When researching about this, I found some enlightening (for me) information about this: 

Per Wikipedia (taken with large helpings of salt), Teflon and other PTFEs react with metals like aluminum at high temperatures. Along with the surrounding air, could these reactions explain why Al/PTFE liners have such powerful explosions? 

PTFEs have strong bonds between their fluorine and carbon atoms, as well as a very low coefficients of friction. Could this also explain the powerful explosive force (due to the release of this energy), and its ability to penetrate armor (low friction between the armor and the jet), respectively? 

This sounds like a very good precursor charge for tandem warheads. The Al/PTFE pre-charge doesn’t need to be very big to do large amounts of damage; I would think a 40mm (or even smaller) RLSC on a 120mm would literally blow up the first couple of layers of NERA /ceramics /whatever (and itself, so no remaining jet tip to penetrate as well) and leave a big hole for the main jet to pass through undisturbed. 

But, I can see why this isn’t being fielded whilst being very efficient (and surprisingly easy to make): fluorine is not the nicest of chemicals to have reacting in air. I can imagine what all the environmentalists would tout about the military using ammo with fluorine compounds as products. 

This is made by the UAE/Saudi right? So I guess they wouldn’t mind the non-precision rockets landing on civilians... or the crew getting roasted by a Kornet. 

1 hour ago, LoooSeR said:

 

Source said that turret protected from 14.5 mm HMG max.

The whole turret, or just the unmanned portion? 

Finished 155mm S12a APHE naval shell: 

Total mass: 47.8kg 

Ballistic mass: 46.48kg - 46.39kg (the lower number is for when the tracer burns out) 

Penetrating mass: 44.74kg 

I have no velocity for this round yet, as I have yet to make propellant charges and an actual gun, but I am planning on around 780m/s at muzzle. With these numbers, the penetration would come out to be 492mm point blank, but I doubt the DDL this goes with will fire at other ships PB. This might be better as a SAP shell as the late war 6"/47 heavy AP were 59kg, and travelling at a similar velocity. 

Anyway, I am always open to adjustments to the design, and I will not bore everyone here with more posts about Naval AP shells. 

Probably niche and not useful for most people here, but: 

https://forum.warthunder.com/index.php?/topic/373522-id0054325-additional-aphe-fragmentation-and-power-addendum/

Estimating fragmentation (velocity and direction) of APHE shells. Seems solid from my ignorant point of view. 

2 hours ago, Meplat said:

"Thunderdome" would definitely sort out the "indefinite wait on death row only to gurgle your last under a huge dose of pentothal"  nonsense we have now.

I’m all for modern gladiator type death games for people stuck on death row (or life in prison), so long as they consent to fighting (as to avoid the 8th). No guns though, only swords and the like. 

Can we just have a 1789-esque French purge of the entire upper class of Britain (with guillotine, and without murderous dictator), and then elect actual human beings who aren’t a bunch of retarded, inbred monkeys? I mean, Jesus H. Christ on an upside-down cross in hell, this has to be the most imbecilic idea I have seen come from knife crime island, even dumber than a having an id to use porn. 

On 2/4/2019 at 3:08 PM, Bronezhilet said:

Shape stabilisation increases drag though, and increasing drag together with lowering mass is a double whammy for your deceleration numbers. Although I haven't checked if the increase in Mv offsets the increase in drag.

Question: 

I remember, either you or someone else, said that soviet HEAT shells were primarily shape stabilized. Why are they referred to as HEAT-FS, and not HEAT-ShS (Shape Stabilized)? Also, do the fins do much of anything for those HEAT shells? 

Glad to hear you’re safe, and thank you in advance for the answer. 

I present the 155mm S12a APCBC-HE: 

46.1kg all together, with an aluminum outer shell, steel cap and body, and Explosive D burster (driving band 'sabot', tracer/burner, and base fuse not created yet). 

From left to right:

• Aluminum shell front (ballistic cap) ~0.8kg 
• Normalizing cap ~10.8kg 
• Projectile body ~31kg 
• Aluminum shell rear (cup) ~0.6kg 
• 2.87kg of Explosive D 

I probably fucked up the normalizing cap, so if anyone wants to elaborate, I would be grateful. 

I saw a commercial for that, and pondered posting it, but I forgot about it a couple minutes later. 

Thanks @LoooSeR for posting it, though  

Edit: I’m retarded, Ram posted a thing on the previous page. 

In addition: 

https://web.archive.org/web/20120423174233fw_/http://www.fischer-tropsch.org/primary_documents/gvt_reports/USNAVY/USNTMJ Reports/USNTMJ-200E-0184-0239 Report 0-16.pdf

Report on Japanese armor processes. Common alloying agents are Manganese, Nickel, Chromium(!), Copper, and Molybdenum. Also includes the (long) process for producing said armor as well as testing results. 

A lot goes into making thick, armor-grade steel; it’s not just “throw iron into furnace, heat up until iron turns into steel, make steel into plate”. 

I agree with @Meplat, good homogeneous armor (especially thick armor) is very time consuming, requires precise alloy ratios (of the same strategic materials as used in aircraft), as well as a similar testing regime to make sure the armor is of quality. 

I hadn’t realized the Russian were a whole year ahead of the US in proximity fused AA technology, considering the Moskva (1941 leader) has ZS-46R (as well as Tashkent 1942 and Kirov 1941)... 

I thought they used pneumatic or combination liquid-gas pistons for recoil. 

On 3/14/2019 at 6:13 AM, Toxn said:

INSERT HUMOROUS FAKE NAME HERE

Arnold Smutenjager. 

Looks like a Cockrill Mk.3 to me. Speaking of which, do any of the German PAW guns have a muzzle break like that?