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Children of a Dead Earth >  创意工坊 > Echo 的创意工坊
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Realistic Stock Materials
描述 讨论0 留言36 改动说明
   
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2020 年 11 月 28 日 上午 10:22
2022 年 5 月 28 日 上午 4:43
8 项改动说明 （ 查看 ）
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AtomHeartDragon
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Realistic Stock Materials

在 Echo 的 1 个合集中
Materials
1 件物品
描述
Realistic Stock Materials (RSM):
  • changes some materials' properties to make them more realistic or to prevent them from being used as structural materials (every change is sourced)
  • changes some materials’ element count so that their sum is 1
  • adds tweaked elements and changes some materials’ properties to prevent them from being used as arc lamp gases
  • changes some elements' solar abundance and materials' cost to make costs somewhat more realistic
  • provides fixed designs that seamlessly replace the stock ones that would otherwise break

Full description here: https://drive.google.com/file/d/1L75eyQqxQc1RqF5INf9bElAF_mR9ydHE/view

Materials spreadsheet: https://drive.google.com/file/d/14acK-VzPIc-0w-Oy1APw3Srsg3SE4yg2/view

Please unsubscribe from this mod before you export any design that uses one of the following stock modules:
  • 2.43 km/s LOX Methane 12 - Gimballed Combustion Rocket
  • 2.50 km/s LOX Methane 7 - Gimballed Combustion Rocket
  • 2.60 km/s LOX Methane Gimballed Combustion Rocket
  • 2.90 km/s Nitrogen Nuclear Thermal Rocket
  • 234 kW Thermoelectric Fission Reactor
  • 1.04 MW Thermoelectric Fission Reactor
  • 13.5 MW Thermoelectric Fission Reactor
as this mod will parasitically attach itself to the exported version of your design.

Credits:
36 条留言
< >
Echo  [作者] 2022 年 11 月 12 日 上午 8:48 
Updated description:
• Fixed Boron Filament changelog.
• Added third source to Diamond's melting point and expanded its notes section.
• Added link to (RSM) materials spreadsheet.
Echo  [作者] 2022 年 11 月 12 日 上午 7:47 
The experiment is done in a non-oxidizing environment and at pressures not exceeding 267 μPa. Those do not seem to be conditions found in lasers ("The arc lamp envelope will rupture from the stress" error seems to suggest that the arc lamp envelope has to withstand the gas internal pressure), and surely are not conditions found in a rocket engine (as I can not prevent diamond from being used there, it needs to have a safe use temperature that would make it survive in those conditions too).

The paper says that oxidizing agents cause oxidation of diamond at temperatures as low as 923 K (in the right conditions; usually 1273 K or higher), and current diamond melting point is 1235 K (the lowest I can go without breaking stock lasers).

Unless I misinterpreted something, I think it's safer to leave diamond melting point as is.
Echo  [作者] 2022 年 8 月 9 日 下午 11:18 
Thanks for the link, Zuthal. AtomHeartDragon has already provided it, but I still haven't implemented it. It's on my todo list though.
Zuthal 2022 年 8 月 9 日 上午 6:53 
For the diamond issue, this article says [royalsocietypublishing.org] that heating at 1500 °C for 45 min under a vacuum yields barely any graphitisation and only on an exceptionally thin specimen, with the rate increasing rapidly up to full graphitisation in 5 to 10 minutes at 1900 °C.

So, I think it would be justified to set the "melting point" for diamond up to possibly as high as 1700 K (still 73K below the temperature at which only a very thin specimen showed any detectable graphitisation).
Echo  [作者] 2022 年 5 月 29 日 下午 1:32 
Added spreadsheet with all material properties. Link in the description.
Echo  [作者] 2022 年 5 月 27 日 下午 1:45 
Mod, description and change notes updated. If you've ever used this mod before this update, every time you booted the game while subscribed to this mod a new crash log was generated in %AppData%\Roaming\CDE\Crashes. If there are no crash logs you're interested in keeping, you can delete that folder. Sorry for the inconvenience.
Echo  [作者] 2021 年 4 月 5 日 上午 5:27 
Mod, description and change notes updated
Echo  [作者] 2021 年 4 月 2 日 上午 8:24 
It seems that material properties are irrelevant for arc lamp vapors, so this means that I don't have to make separate liquid and vapor states for the same material.

@AtomHeartDragon
Unfortunately I don't have much free time this period, but hopefully I should be able to fix the tracers relatively soon.
I don't understand what "blocks" means in the last sub-mod you're proposing. Materials cost and properties fixes mods woudln't be compatible with each other because of the diamond though, so I would have to make a mod for each combination.
The fact that people can select Tungsten Rhenium as a rocket engine material does not change the fact that they can select it as a thermocouple material...

@WarDaft
Thanks for the paper!
WarDaft 2021 年 3 月 27 日 下午 5:13 
Didn't mean to leave a reply for so long, but, I do finally have a source for a supposedly common material for at least some kinds of rocket engines: Disilicide coated niobium alloys.

Source is:
https://arc.aiaa.org/doi/abs/10.2514/3.23967?journalCode=jpp#:~:text=engine%20combustion%20chamber%20requires%20the,of%20the%20propellant%20combustion%20temperature

And contains proposals for other materials.

One outcome I don't have a source yet for is simply considering the engine disposable and having part of the chamber literally burn away during normal operation.
AtomHeartDragon  [作者] 2021 年 3 月 27 日 下午 4:42 
Also, I don't think Tungsten-Rhenium change is good, since it breaks one of the primary applications of the alloy - rocket engine won't be running that long.