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Post by ddzirowan on Aug 8, 2018 18:38:11 GMT
Not sure if anyone already said this somewhere. Does a highly electrically conductive gas exist? Could we use that to prevent any solid-solid friction? Would that be feasible? Would it cost a lot more if like, the gas was at a very low temperature? What about a design that doesn't accelerate the slug in one rail but in multiple shorter conductive barrels. The plasma would be able to exit from holes in the not conductive rails. Would this help with barrel overheating? Could even a low friction coating for the bullet like teflon reduce friction like in The Expanse? Also, why isn't the barrel sublimation due to friction a problem in CoaDE?
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Post by bigbombr on Aug 8, 2018 18:50:04 GMT
Not sure if anyone already said this somewhere. Does a highly electrically conductive gas exist? Could we use that to prevent any solid-solid friction? Would that be feasible? Would it cost a lot more if like, the gas was at a very low temperature? What about a design that doesn't accelerate the slug in one rail but in multiple shorter conductive barrels. The plasma would be able to exit from holes in the not conductive rails. Would this help with barrel overheating? Could even a low friction coating for the bullet like teflon reduce friction like in The Expanse? Also, why isn't the barrel sublimation due to friction a problem in CoaDE? Plasmas are electrically conductive. Railguns using this are called plasma-sabot railguns or something. "What about a design that doesn't accelerate the slug in one rail but in multiple shorter conductive barrels. The plasma would be able to exit from holes in the not conductive rails. Would this help with barrel overheating?" No, this wouldn't help, as the heat still gets spread over the same distance, and each time you enter a knew barrel things will go very wrong if said barrel is even slightly out of alignment (due to vibrations or thermal warping for example). The Expanse railguns are unrealistic. Teflon would probably replace friction from movement with electrical resistance. The teflon would also melt/vaporize. Sometimes when designing a railgun, the game will warn you of "excessive rail erosion" or something. CoaDE doesn't track erosion over consecutive shots though, so IRL the 1g sandcasters would probably not work. I do know of a few guys that made a railgun themselves that fired aluminium slugs. They picked aluminium because it's electrically conductive and has a fairly low melting point. Some of the projectile would melt and act as a lubricant.
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Post by ddzirowan on Aug 8, 2018 19:19:06 GMT
Plasmas are electrically conductive. Railguns using this are called plasma-sabot railguns or something. "What about a design that doesn't accelerate the slug in one rail but in multiple shorter conductive barrels. The plasma would be able to exit from holes in the not conductive rails. Would this help with barrel overheating?" No, this wouldn't help, as the heat still gets spread over the same distance, and each time you enter a knew barrel things will go very wrong if said barrel is even slightly out of alignment (due to vibrations or thermal warping for example). The Expanse railguns are unrealistic. Teflon would probably replace friction from movement with electrical resistance. The teflon would also melt/vaporize. If plasmas are conductive why arent we using them? (or are we?(Vsauce music amplifies)). Well uhm i was thinking that some of the plasma could get out of the barrel before and so could prevent some erosion. Also, i said the CONDUCTIVE barrels would be separated but there would be a barrel anyway that connects everything. There would not be disalignements. I know The Expanse's are unrealistic. I was asking if something similar could be done. Of course not teflon. Something harder, with an higher specific heat and low friction. Could we have shrinking barrels? So that the diameter is always the same even with eroding shots. That would be only for a big, low-rof weapon thought.
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Post by bigbombr on Aug 8, 2018 20:42:12 GMT
Plasmas are electrically conductive. Railguns using this are called plasma-sabot railguns or something. "What about a design that doesn't accelerate the slug in one rail but in multiple shorter conductive barrels. The plasma would be able to exit from holes in the not conductive rails. Would this help with barrel overheating?" No, this wouldn't help, as the heat still gets spread over the same distance, and each time you enter a knew barrel things will go very wrong if said barrel is even slightly out of alignment (due to vibrations or thermal warping for example). The Expanse railguns are unrealistic. Teflon would probably replace friction from movement with electrical resistance. The teflon would also melt/vaporize. If plasmas are conductive why arent we using them? (or are we?(Vsauce music amplifies)). Well uhm i was thinking that some of the plasma could get out of the barrel before and so could prevent some erosion. Also, i said the CONDUCTIVE barrels would be separated but there would be a barrel anyway that connects everything. There would not be disalignements. I know The Expanse's are unrealistic. I was asking if something similar could be done. Of course not teflon. Something harder, with an higher specific heat and low friction. Could we have shrinking barrels? So that the diameter is always the same even with eroding shots. That would be only for a big, low-rof weapon thought. I believe people are looking into plasma sabot railguns (which aren't the same as plasma railguns, which are also looked into). But Getting even regular railguns to an operational level is hard enough. I'm not sure if shrinking barrels are necessary. The projectile erodes, but also expands when it heats up. I don't know if the projectile overall increases or decreases in diameter. That would probably depend on the specific design.
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Post by AdmiralObvious on Aug 8, 2018 21:04:28 GMT
If plasmas are conductive why arent we using them? (or are we?(Vsauce music amplifies)). Well uhm i was thinking that some of the plasma could get out of the barrel before and so could prevent some erosion. Also, i said the CONDUCTIVE barrels would be separated but there would be a barrel anyway that connects everything. There would not be disalignements. I know The Expanse's are unrealistic. I was asking if something similar could be done. Of course not teflon. Something harder, with an higher specific heat and low friction. Could we have shrinking barrels? So that the diameter is always the same even with eroding shots. That would be only for a big, low-rof weapon thought. I believe people are looking into plasma sabot railguns (which aren't the same as plasma railguns, which are also looked into). But Getting even regular railguns to an operational level is hard enough. I'm not sure if shrinking barrels are necessary. The projectile erodes, but also expands when it heats up. I don't know if the projectile overall increases or decreases in diameter. That would probably depend on the specific design. I think it'd depend on what the amerature is, and specifically how small the bore is. I can also think of plasma ameratures possibly splitting themselves in the barrel in the event of any fouling if it does happen, and that probably would be a bad thing, for damaging the rails, and the efficiency of the projectile. I think saboted plasma projectiles would be more effective because it would effectively eliminate the potential for the amerature to break apart in the barrel. Lastly, I'm pretty sure that plasma rails would be inefficient in atmosphere. I think the sabot would cool down in flight, but that turns into an extremely weirdly shaped shot for actually hitting anything remotely distant to the gun due to any air resistance. For spaceborne applications all of the above is much less likely to happen.
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Post by bigbombr on Aug 9, 2018 6:46:26 GMT
I believe people are looking into plasma sabot railguns (which aren't the same as plasma railguns, which are also looked into). But Getting even regular railguns to an operational level is hard enough. I'm not sure if shrinking barrels are necessary. The projectile erodes, but also expands when it heats up. I don't know if the projectile overall increases or decreases in diameter. That would probably depend on the specific design. I think it'd depend on what the amerature is, and specifically how small the bore is. I can also think of plasma ameratures possibly splitting themselves in the barrel in the event of any fouling if it does happen, and that probably would be a bad thing, for damaging the rails, and the efficiency of the projectile. I think saboted plasma projectiles would be more effective because it would effectively eliminate the potential for the amerature to break apart in the barrel. Lastly, I'm pretty sure that plasma rails would be inefficient in atmosphere. I think the sabot would cool down in flight, but that turns into an extremely weirdly shaped shot for actually hitting anything remotely distant to the gun due to any air resistance. For spaceborne applications all of the above is much less likely to happen. Yeah, plasma railguns were exclusively for in-space use. They were researched as part of SDI.
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Post by ddzirowan on Aug 9, 2018 14:39:03 GMT
If plasmas are conductive why arent we using them? (or are we?(Vsauce music amplifies)). Well uhm i was thinking that some of the plasma could get out of the barrel before and so could prevent some erosion. Also, i said the CONDUCTIVE barrels would be separated but there would be a barrel anyway that connects everything. There would not be disalignements. I know The Expanse's are unrealistic. I was asking if something similar could be done. Of course not teflon. Something harder, with an higher specific heat and low friction. Could we have shrinking barrels? So that the diameter is always the same even with eroding shots. That would be only for a big, low-rof weapon thought. I believe people are looking into plasma sabot railguns (which aren't the same as plasma railguns, which are also looked into). But Getting even regular railguns to an operational level is hard enough. I'm not sure if shrinking barrels are necessary. The projectile erodes, but also expands when it heats up. I don't know if the projectile overall increases or decreases in diameter. That would probably depend on the specific design. Yeah sorry, I was talking about plasma sabot railguns.
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