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Post by Hicks on Mar 13, 2017 20:17:55 GMT
100 ton torpedo ? What is the payload ? Most likely ~30 tons of "go away." Apply liberaly to the enemy and watch them go from an active shipping hazzard all the way to a passive one. |
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Post by Enderminion on Mar 13, 2017 20:28:18 GMT
100 ton torpedo ? What is the payload ? three 5Mt bombs |
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Post by RiftandRend on Mar 14, 2017 0:47:58 GMT
Isn't Fluorene supposed to be highly corrosive? I'm still leery about using propellants that might eat through their tanks in the 6 months travel to a combat zone. Flourine treated metals are resistant to it's corrosive effects if properly prepared. |
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Post by Enderminion on Mar 14, 2017 0:57:25 GMT
like PTFE
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Post by dwwolf on Mar 14, 2017 7:36:27 GMT
100 ton torpedo ? What is the payload ? three 5Mt bombs 100 tons for that ? Do they have 20km/s dV. |
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Post by The Astronomer on Mar 14, 2017 7:49:51 GMT
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Post by samchiu2000 on Mar 14, 2017 8:05:40 GMT
WHAT DELTA V IS BANNED!?
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Post by RiftandRend on Mar 14, 2017 8:44:01 GMT
As far as I know it was a temporary ban that should expire soon. |
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Post by samchiu2000 on Mar 14, 2017 8:58:02 GMT
As far as I know it was a temporary ban that should expire soon. Alright thanks for remaining. BTW why he is banned? |
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Post by RiftandRend on Mar 14, 2017 9:32:07 GMT
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Post by Enderminion on Mar 14, 2017 11:09:21 GMT
100 tons for that ? Do they have 20km/s dV. nope, 35mm of armour and high acceleration |
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Post by vegemeister on Mar 14, 2017 12:55:04 GMT
Isn't Fluorene supposed to be highly corrosive? I'm still leery about using propellants that might eat through their tanks in the 6 months travel to a combat zone. I was also concerned about this, so I found this book about fluorine handling in rocket systems. See discussion starting on pg. 63 of the PDF. It looks like fluorine is actually pretty safe for a lot of common structural metals, so long as no water gets in the system. Many metals passivate with fluoride flims in fluorine environments, but water dissolves the films and allows continuous corrosion. Boron is a no-go, but I think our "martensitic stainless steel" is probably similar to 410 stainless, and it allows a tank mass ratio of 98. Aluminum Zinc Magnesium is slightly safer, I think, and gives a mass ratio of 95. I use magnesium for turbopumps. It doesn't look like they characterized lithium metal, because who the fuck uses alkali metals for structural applications? I suspect the fluorine tanks would be filled at the missile factory and sealed with a diaphragm. After missile launch, the diaphragm could be burst by heating the fluorine with a submerged electric heater, which would provide autogenous pressurization during flight. Or you could use a mechanical piercer. |
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Post by dwwolf on Mar 14, 2017 20:18:32 GMT
For a 100tons I can fire off 20 of my 9.6Mt Fatman missiles.
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Post by newageofpower on Mar 14, 2017 23:48:16 GMT
Coat with a few microns of PTFE. I think our "martensitic stainless steel" is probably similar to 410 stainless, and it allows a tank mass ratio of 98. Aluminum Zinc Magnesium is slightly safer, I think, and gives a mass ratio of 95. What do you think of Maraging steel? I mean, it's inferior to AlZnMg for propellant tank purposes, but it's mechanical properties are pretty good for the price. I used to build coils out of them, last patch. I use magnesium for turbopumps. It doesn't look like they characterized lithium metal, because who the fuck uses alkali metals for structural applications? It's disgustingly light weight, though I prefer Potassium in most designs. Again, coat with something maximally florinated. I suspect the fluorine tanks would be filled at the missile factory and sealed with a diaphragm. After missile launch, the diaphragm could be burst by heating the fluorine with a submerged electric heater, which would provide autogenous pressurization during flight. Or you could use a mechanical piercer. Given that my missile drives only have 2 settings (Full thrust, or Off, and my high acceleration missiles refuse to turn off) this is now my headcanon. |
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Post by vegemeister on Mar 15, 2017 7:51:51 GMT
Coat with a few microns of PTFE. PTFE is, amusingly, not maximally fluorinated. The book says it's the least worst polymer if you have to use one, but suggests only using it if you have to, for valve stem packing. For gaskets, it suggests soft aluminum or copper. A thin layer of aluminum would probably work though. Could be sputtered. Copper can be electroplated. COPVs are also a thing, but if the missiles are kept cold, the storage pressure might be too low for a COPV to be any better. Also, our "boron" seems to be a material that has the bulk properties of boron fiber. I'm skeptical about realism here. I think our "martensitic stainless steel" is probably similar to 410 stainless, and it allows a tank mass ratio of 98. Aluminum Zinc Magnesium is slightly safer, I think, and gives a mass ratio of 95. What do you think of Maraging steel? I mean, it's inferior to AlZnMg for propellant tank purposes, but it's mechanical properties are pretty good for the price. I used to build coils out of them, last patch. Maraging steel is actually better than AlZnMg, for tank structure, due to better strength/weight. Tank mass ratio of 120 achievable. Vanadium chromium steel is even better, but I'm having trouble finding a real world steel that matches its properties. However, the book says: And table 3-I, "CORROSION OF METAL SPECIMENS IMMERSED IN LIQUID FLUORINE FOR 1 YEAR", doesn't contain iron or any mild or carbon steels, so I'm wary of it. Chrome plating might make it as good as stainless, on the surface. I use magnesium for turbopumps. It doesn't look like they characterized lithium metal, because who the fuck uses alkali metals for structural applications? It's disgustingly light weight, though I prefer Potassium in most designs. Again, coat with something maximally florinated. Book says flow conditions make spontaneous combustion more likely. Probably better to coat with aluminum. I suspect the fluorine tanks would be filled at the missile factory and sealed with a diaphragm. After missile launch, the diaphragm could be burst by heating the fluorine with a submerged electric heater, which would provide autogenous pressurization during flight. Or you could use a mechanical piercer. Given that my missile drives only have 2 settings (Full thrust, or Off, and my high acceleration missiles refuse to turn off) this is now my headcanon. The diaphragm idea was just for making sure the fluorine doesn't leak into the inside of your ship and cause problems. You could have a valve downstream of the diaphragm. |
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