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Post by concretedonkey on Oct 28, 2016 19:09:25 GMT
Are you guys still accounting for the nuclear EFPs we discovered earlier? On pages 5 and 6 they beginning to be seen as the biggest threat, but I haven't really seen them discussed at all since then. Admittedly I didn't go through the whole thread again, but I'm pretty sure they're a highly credible threat. I have a compact 95 ton NEFP (10x200 cm, approximately) that I'm considering trying as the last stage in a multistage shipkiller MIRV. NEFPs currently have some fusing issues, though: they hit the target without detonating as often as not. I'm using them too, frankly they are quite the penatrators. I usually see the whole flock going through the same hole, some detonating on the inside. I'm likely to try the radiators idea today, since overpenatration is widespread. Aerogel filled armor is usually quite resistant but the ship behind it ... not so much. I had cases where all the tanks were obliterated ship was literally glowing slag from inside. Armor was still mostly intact. Edit: A picture is worth a thousand words
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Post by ross128 on Oct 28, 2016 20:09:46 GMT
I think the main reason there hasn't been much talk about armoring against NEFPs is that nobody has really discovered a reasonable way to do so yet. I know when I'm testing them, I have to use 5 or more meters of Osmium or Vanadium Chromium Steel just to start seeing differences between different warheads (less than that and I end up trying to split hairs between varying degrees of "punched clean through"). I have discovered though that 7 or more meters of VCS can be fairly resistant to small/intermediate NEFP warheads. Not proof against them, but their penetration rate starts to get fairly low past that size. Megaton-range NEFPs still visit annihilation on it though. But who'd be crazy enough to armor their ship with 7 meters of VCS?
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Post by captinjoehenry on Oct 28, 2016 20:47:06 GMT
I think the main reason there hasn't been much talk about armoring against NEFPs is that nobody has really discovered a reasonable way to do so yet. I know when I'm testing them, I have to use 5 or more meters of Osmium or Vanadium Chromium Steel just to start seeing differences between different warheads (less than that and I end up trying to split hairs between varying degrees of "punched clean through"). I have discovered though that 7 or more meters of VCS can be fairly resistant to small/intermediate NEFP warheads. Not proof against them, but their penetration rate starts to get fairly low past that size. Megaton-range NEFPs still visit annihilation on it though. But who'd be crazy enough to armor their ship with 7 meters of VCS? Well that is a pretty poor test. I mean monolithic armor is pretty worthless at those velocities and no one uses that so a better test would be against armor with whipple shield and a complex composition armor. So use stuffed whipple shields or spall liners and those types of things.
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Post by nivik on Oct 28, 2016 22:49:18 GMT
God, I'd neglected to actually check the thicknesses of the aerogel armor you guys have been talking about. Ten meters. Hell's bells. My target station is getting fat.
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Post by ross128 on Oct 29, 2016 0:06:32 GMT
Well, if you've got 10m of Silica Aerogel (which actually does help a bit by making the warhead detonate further away), about 7m of Boron, 10m of Graphite Aerogel, 4m of VCS, and 10m of para-aramid fiber as a spall liner, you can get about an 80% stop rate against 1-megaton warheads.
It does reduce the amount of VCS you have to use, but increases your total armor thickness to 41m and is still prohibitively expensive.
A typical whipple shield (milimeter-range thickness) does absolutely nothing to incoming NEFPs, even stuffed, though you do still at least see the "warhead detonates further away" effect from the 20m+ of spacing.
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Post by nivik on Oct 29, 2016 0:26:45 GMT
... A typical whipple shield (milimeter-range thickness) does absolutely nothing to incoming NEFPs, even stuffed, though you do still at least see the "warhead detonates further away" effect from the 20m+ of spacing. At that point you're basically using a point-defense system. It's just that the bullets are pre-deployed around your ship, and happen to follow the ship around when it moves.
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Post by captinjoehenry on Oct 29, 2016 1:04:45 GMT
The best part is that 10 meters of aerogel or any of the other things are ONLY cost prohibitive. Mass wise they are virtually free! So as long as you have an unlimited budget and give 0 shits about cross section you can end up with very light weight nigh impenetrable armor!
Also I would recommend testing with far more aerogel and a lot less other stuff. The other stuff tends to heavily degrade the effectiveness of the whipple shield by adding more plasma to the impact. So just using a crap load of aerogel or better yet microlattice with just some very thin like 1cm thick layers of basalt fiber has given me the best result.
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Post by cuddlefish on Oct 29, 2016 1:06:43 GMT
Hopefully when fuses work more consistently we'll be able to ascertain things like the effective standoff range of NEFP weapons, because that will have ramifications for what defenses can even attempt to defeat them. So far, armor seems to be a miss...
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Post by fallingaggressively on Oct 29, 2016 1:14:51 GMT
I'm a little confused about the effectiveness of Whipple shields. In my stock weapon tests I've found that having the monolithic block works better than the Whipple! I tried the 3cm boron/1.4m aerogel/5mm boron arrangement but found it was better to reverse the matrix? Is this because of the 285mm coil gun isn't significantly effected by the Whipple?
If I change the mono-block to 5cm van chrome (on an angled nose) the thing was practically invulnerable.
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Post by cuddlefish on Oct 29, 2016 1:18:18 GMT
Heavy projectiles are believed to be the least affected by Whipple shields, yes. Low mass, hyper-velocity threats are where they work best, relative to traditional armor.
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Post by kjakker on Oct 29, 2016 1:27:17 GMT
Hello, I am a new member, I just found out about the CoaDE yesterday and just started playing it today. Now I have not had time to read this whole thread but it reminded me of these images. They are from a Babylon 5 fan site but I wondered if you think either of these armor layouts are viable in CoaDE? Link to source: efni.org/armor.htm
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Post by captinjoehenry on Oct 29, 2016 1:39:06 GMT
Hello, I am a new member, I just found out about the CoaDE yesterday and just started playing it today. Now I have not had time to read this whole thread but it reminded me of these images. They are from a Babylon 5 fan site but I wondered if you think either of these armor layouts are viable in CoaDE? Link to source: efni.org/armor.htmWell similar ideas are definitely applicable but most of those materials are not in CoaDE. In addition in real life I think that armor would need very different proportions of the various materials and we are capped at 5 diffrent armor layers which can be at most 10meters thick.
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Post by ross128 on Oct 29, 2016 1:42:33 GMT
The best part is that 10 meters of aerogel or any of the other things are ONLY cost prohibitive. Mass wise they are virtually free! So as long as you have an unlimited budget and give 0 shits about cross section you can end up with very light weight nigh impenetrable armor! Also I would recommend testing with far more aerogel and a lot less other stuff. The other stuff tends to heavily degrade the effectiveness of the whipple shield by adding more plasma to the impact. So just using a crap load of aerogel or better yet microlattice with just some very thin like 1cm thick layers of basalt fiber has given me the best result. _____________________________________________________________ Even an 80% defeat rate is not very good when you're dropping a budget of gigacreds though. It just means all the enemy needs to do is spam even more missiles at you, if they drop a few Mcreds on missiles to kill 40+Gcreds worth of ship, that's quite a good trade for them. Also, aerogel buffers are not mass-free if you have any hard shells outside them. Because the larger radius will increase how much material you need for the outer shell. NEFPs also make very large holes when they hit, so the aerogel buffer will crumble under sustained bombardment, and missiles are quite capable of flying through gaps in armor without getting destroyed (though I don't know if completely destroyed hull sections still count towards proximity, so the fuses might still go off in the same place). One amusing thing with KKVs actually, if you have a large swarm of KKVs that have tons of delta-V to spare, the back end of the swarm can fly through the holes in the initial target after the swarm has bored through, turn around, and hit a secondary target. It's an interesting side-effect of them not having fuses. Anyway, my opinion is that armor is not the solution to NEFPs. It's better to intercept them with something that can set off their prox fuses prematurely. The most armor can do is give you enough protection from direct-fire weapons that you can force the enemy into a missile duel, a missile duel you can hopefully be equipped to win.
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Post by captinjoehenry on Oct 29, 2016 1:49:53 GMT
The best part is that 10 meters of aerogel or any of the other things are ONLY cost prohibitive. Mass wise they are virtually free! So as long as you have an unlimited budget and give 0 shits about cross section you can end up with very light weight nigh impenetrable armor! Also I would recommend testing with far more aerogel and a lot less other stuff. The other stuff tends to heavily degrade the effectiveness of the whipple shield by adding more plasma to the impact. So just using a crap load of aerogel or better yet microlattice with just some very thin like 1cm thick layers of basalt fiber has given me the best result. _____________________________________________________________ Even an 80% defeat rate is not very good when you're dropping a budget of gigacreds though. It just means all the enemy needs to do is spam even more missiles at you, if they drop a few Mcreds on missiles to kill 40+Gcreds worth of ship, that's quite a good trade for them. Also, aerogel buffers are not mass-free if you have any hard shells outside them. Because the larger radius will increase how much material you need for the outer shell. NEFPs also make very large holes when they hit, so the aerogel buffer will crumble under sustained bombardment, and missiles are quite capable of flying through gaps in armor without getting destroyed (though I don't know if completely destroyed hull sections still count towards proximity, so the fuses might still go off in the same place). One amusing thing with KKVs actually, if you have a large swarm of KKVs that have tons of delta-V to spare, the back end of the swarm can fly through the holes in the initial target after the swarm has bored through, turn around, and hit a secondary target. It's an interesting side-effect of them not having fuses. Anyway, my opinion is that armor is not the solution to NEFPs. It's better to intercept them with something that can set off their prox fuses prematurely. The most armor can do is give you enough protection from direct-fire weapons that you can force the enemy into a missile duel, a missile duel you can hopefully be equipped to win. Hmm for me I use just 5mm of basalt fiber for my whipple shields so the mass penalty is very little even with huge amount of aerogel. It is definitely costly for sure and under any circumstances you want to intercept the hostile missile as far from you as possible. As for KKV I have found they are not hugely effective against packed whipple shields. Mind you now and then they just roflstomp the ship but most of the time they don't do much. Now for nuke propelled shots I have not really experimented with them.
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Post by dragonkid11 on Oct 29, 2016 1:57:20 GMT
Tested my own kinetic kill dense radiator missile or hypervelocity radiator missile against my aerogel whipple shield ship with 3 cm boron, 1.4 meter graphite aerogel, 5mm boron, 1.4 meter graphite aerogel and finally 2 cm silica aerogel. The missile did MASSIVE damage to the whipple shield area. The fact that it's still functionable is a proof to the toughness of the armor and it's still not enough. The KKDRM just rip holes through anything....if they hit. As I mentioned in post your design thread, they seems to...follow their dead kins to doom due to their heat tracking mechanism. Which sucks, a lot. Of course, that's assuming if they get hit by it. Hello, I am a new member, I just found out about the CoaDE yesterday and just started playing it today. Now I have not had time to read this whole thread but it reminded me of these images. They are from a Babylon 5 fan site but I wondered if you think either of these armor layouts are viable in CoaDE? Link to source: efni.org/armor.htmTrust me, throw everything you know about scifi armor out of the window. Because half of those material in the image are non-existent and kinda too costly for their capability for REAL scifi armor capable of being made by MAN (Or WOMAN).
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