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For SpaceNut .... the new topic looks good! Thanks for the touchup!
Best wishes for success with the topic. It seems to me it has great potential.
It may take a while to build up steam, but eventually the idea of building a ** real ** Superdome on Mars is going to inspire wealthy corporations to make the plunge. The advertising value is probably incalculable.
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For SpaceNut re update in OpenFOAM ... https://newmars.com/forums/viewtopic.ph … 94#p237294
Thanks for that ** very ** interesting report on oscillations in ion engines.
I was completely unaware of problems with that engine type, and appreciate your finding and showing that information,
You are probably aware of this but our readers may not be ... the ion engine and kbd512's Optical Plane design are competitors for future space missions. The ion engine has a ** very ** long start, and an accomplished track record. Never-the-less, kbd512's concept appears to have potential. A hybrid design is possible. In that case, the brute force of kbd512's concept would be balanced by the long-and-slow propulsion of an ion design, using the exact same photon collection system.
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For SpaceNut re heat pump for Calliban's Dome... https://newmars.com/forums/viewtopic.ph … 25#p237325
Interesting! As a question for your AI friend... would this work with the massive Ziggurat layer around the dome?
In other words, if you place your tubing in the regolith as you pack it around the dome while building the wall, could it serve as an thermal exchange system without having to dig down into the material under the dome?
Calliban seems to spend worrying time more on cooling than on heating, so the ability to move thermal energy out of the habitat might prove useful.
Plus, if the regolith packed around the dome is heated, then the dome itself will not be losing thermal energy to the regolith as rapidly as otherwise would be the case.
I still think the right way to go is to build a light weight metal scaffolding inside the wall to hold fixtures like LED panels, and let the basalt wall carry the load of the radiation regolith piled above.
In any case, neat post on heat pumps.
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A Borehole Thermal Energy Storage (BTES) system, involving a series of U-tube pipes connected in a closed-loop and drilled 50–200m deep, would be necessary to transfer heat between the habitat and the deep ground.
The ground loop is dug and the filled where you would like it so if you want the loop in the ziggurat structure it could be done on even beneath the entire structure the loop does not care where it is so long as its at a given depth to become a stable location of temperature gradient.
As far as something to hold internal items that are not load baring for the structure it depends on how much materials remains after the dome is built.
I gave you in the topic two different methods to get what we need one that costs power energy and one that uses waste radiated heating with less energy being used to achieve the goal.
The heat pump also give cooling while a separate cooling loop is required to supplement the waste heat system which increases resources that might not be present.
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For SpaceNut .... thanks for bringing the land making topic back into view from 2017...
You and Void are the only current members who participated in that series.
There's lots of dry land on Mars, but not much that Earth people would call "livable".
I'm hoping kbd512 will talk about the round ring torus habitat on Mars tonight.
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Rather than shape more information of Basalt forming blocks from hard rock or from sands if site present as I included in the topics.
As 5 days plus for single blocks means we are not building very much for each processed batch.
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For SpaceNut re neat post in OpenFOAM...
https://newmars.com/forums/viewtopic.ph … 66#p237366
I added that to the index for the topic.
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