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Post by David367th on Dec 4, 2017 3:43:50 GMT
make a ship of AR500?
Edit: course AR500 will never let you know what that shit is made out of
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Post by ππππππππππ on Dec 4, 2017 4:33:09 GMT
make a ship of AR500? Edit: course AR500 will never let you know what that shit is made out of If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. |
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Post by David367th on Dec 4, 2017 4:52:13 GMT
make a ship of AR500? Edit: course AR500 will never let you know what that shit is made out of If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. It's actually a composite. Steel core with rubber outer layers. |
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Post by ππππππππππ on Dec 4, 2017 5:45:10 GMT
If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. It's actually a composite. Steel core with rubber outer layers. the rubber only protects against spalling, and nothing else. the steel would be just as effective without it, but your face would be splattered with hot shrapnel of bullets not penetrating the armour. Demolition ranch fired 50 shotgun slugs at a plate, and the rubber came off but the plate stayed intact, although slightly bent. |
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Post by darthroach on Dec 4, 2017 9:51:48 GMT
The ship doesn't have anything close to that performance. When operating with NTR it will usually have no more than 10km/s delta v, while operating with MPD it will have acceleration in the microgees. It's not a torchship, it's just got two very different systems of engines - sort of like two gears. Pretty much everyone puts an MPD on their ships nowadays, because they are very little additional mass and give a ton of additional delta v. You can't use them in deep gravity wells due to the glacial acceleration, though. That isn't necessarily true. Granted sufficient power, MPDT-equipped craft can achieve acelerations nearing 1 m/s^2 while maintaining tens of kilometres per second of delta-v. As an proof, I presentΒ this. Do note though, that this craft later had its low-gear acceleration boosted to 40.1mg-114mg in exchange for a somewhat smaller delta-v budget. Your MPD probably breaks physics in some way. Most likely somewhere in the heat transfer system. |
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Post by Rocket Witch on Dec 5, 2017 16:39:50 GMT
make a ship of AR500? Edit: course AR500 will never let you know what that shit is made out of If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. High manganese, high nickel, medium carbon. Conventional armour steel. I don't think the surface is usually modified as hardness is already very high. 247 ksi = 1703 MPa ultimate tensile strength. |
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Post by Kerr on Dec 5, 2017 18:28:22 GMT
View AttachmentΒ I wonder if a .22 long rifle could penetrate an AR 500 plate if it was going 1.1 kilometers per second and was made of depleted uranium  Sounds like the equivilant of a 5.56 Incendiary-SLAP with self sharpening abilities. I Δ£uess it depends on how long the penetrator actually is, if it is only 15mm i think it will have problems simply because of an lack of inertia. |
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Best Nuke i could come up with
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Post by Best Nuke i could come up with on Dec 7, 2017 13:39:13 GMT
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Post by teeth on Dec 7, 2017 20:46:32 GMT
If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. Tamahagane is trash, the reason they had to do so much folding and have so many different hardness steels throughout the blade is because it was so weak that a sword made in a more simple manner would break. All of Europe and Asia had much better steels, but those were still inferior to modern steel (except maybe damascus steel, but I can't find any mechanical properties on it.) That's surprising, I expected a much higher carbon content considering its hardness. |
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Post by Kerr on Dec 7, 2017 20:54:54 GMT
If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. Tamahagane is trash, the reason they had to do so much folding and have so many different hardness steels throughout the blade is because it was so weak that a sword made in a more simple manner would break. All of Europe and Asia had much better steels, but those were still inferior to modern steel (except maybe damascus steel, but I can't find any mechanical properties on it.) That's surprising, I expected a much higher carbon content considering its hardness. I think most about Damascus steel is more legend than fact. Japan had pretty shitty steel because they had bad sources for steel, their often had impurities of sand and other substances. Although an modern steel German Sword appears to be superior to a modern steel Katana. |
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Post by teeth on Dec 7, 2017 21:00:04 GMT
I think most about Damascus steel is more legend than fact. Japan had pretty shitty steel because they had bad sources for steel, their often had impurities of sand and other substances. Although an modern steel German Sword appears to be superior to a modern steel Katana. Historical examples of Damascus steel have been examined and they've found carbon nanotubes in the steel, I'd imagine it's tougher than other steels of the time and can be hardened to a higher degree before becoming too brittle. Any talk of them being able to cut through other swords or through armor is pure fantasy though. |
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Post by Kerr on Dec 7, 2017 21:18:53 GMT
I think most about Damascus steel is more legend than fact. Japan had pretty shitty steel because they had bad sources for steel, their often had impurities of sand and other substances. Although an modern steel German Sword appears to be superior to a modern steel Katana. Historical examples of Damascus steel have been examined and they've found carbon nanotubes in the steel, I'd imagine it's tougher than other steels of the time and can be hardened to a higher degree before becoming too brittle. Any talk of them being able to cut through other swords or through armor is pure fantasy though. Source? CNT within Damascus steel sounds very interesting, adding graphene to copper increases its yield strength by a factor of 500x, while not even making up 0.1% of the total mass up. |
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Post by teeth on Dec 7, 2017 21:40:57 GMT
Source? CNT within Damascus steel sounds very interesting, adding graphene to copper increases its yield strength by a factor of 500x, while not even making up 0.1% of the total mass up. It's one of those situations where there are so many pop-sci articles about the study on the internet that it's impossible to find the original study, but here's two articles from reputable sources news.nationalgeographic.com/news/2006/11/061116-nanotech-swords.htmlwww.nature.com/articles/444286aNobody has managed to recreate it as far as I know, modern "damascus" steel is just pattern welded steel that imitates the look of real damascus. |
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Post by Rocket Witch on Dec 8, 2017 1:55:26 GMT
That's surprising, I expected a much higher carbon content considering its hardness. There is a significant proportion of silicon, which may have something to do with that. I've read that high silicon content is undesirable but it seems more advanced steels have uses for it. |
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Post by targetx on Dec 8, 2017 12:04:15 GMT
make a ship of AR500? Edit: course AR500 will never let you know what that shit is made out of If I had to guess, Id say its made of the same stuff a katana is made out of. its super hard on the surface, but it can still bend without shattering. Its even tempered in a similar manner. Face hardened armour isn't used any more. You want it as homogeneous as possible. Face hardening after the steel has been rolled introduces defects into the grain structure of the steel. Some parts are harder than others, the depth isn't perfectly even, there are dislocations introduced to the grain structure etc etc. Rolled homogeneous armour replaced krupp type armours, which were in turn replaced by composites in armoured vehicles and for personnel use, steel has been supplemented or replaced by ceramic plates and in some cases even plastics (tho for lvl III and above you're only looking at steel and ceramic in personal armour) |
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