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The current hab isn't split into two quonset-shaped halves because the hab is spun to produce artifical gravity on the way out, and that would put the floor "standing up" ninety degrees in the wrong orientation for artificial gravity.
-- RobS
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"Forty-two point seven percent of all statistics are made up on the spot" Steven Wright
I know the hab is spun - but what would be wrong with bisecting it with a vertical wall that allowed the hab to open like a book - hinged on one side - if you wanted to have it flat like two quoset huts? That way you spin it like it normally would be spun - and on mars the spin floors would be the walls. Everything should be bolted on and designed so it can be removed and used for multiple uses. Plastic tubs for drawers in the desk so that the drawers can be used for bio experiments if needed,for example. All bolts the same, so you can repair missing ones on the rover. Designed multiple uses for everything - so you have the maximum chance to survive in case of the inconceivable. Currently, what happens if the hab is forced onto it's side ( like falling into a ravine)?
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I think the plan for avoiding a ravine is to land the hab in a place where there aren't any. But the unexpected can still happen.
I don't think any of us know the answer to your question, since we weren't involved in designing the hab. But here would be my guesses:
1. Covering the roof of the hab with sandbags is adequate in terms of radiation protection (*Case for Mars* does not envision doing anything else).
2. Designing a hab that can be swung around and deployed without a crane is complicated and prone to failure. The thing will weigh several tonnes even in Martian gravity, after all.
3. The floor area in the "tuna can" design is probably the same as in a quonset hut, or nearly the same.
Therefore on the principle of keep it simple, the idea was not considered.
-- RobS
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If the hab did fall on its side and survived, and you had the rover already on the surface, you might be able to use it to slowly raise the hab up, using piled regolith to move it cm by cm. Or, you could undermine one side to right it, ending up with the hab in a hole. This is probably the best, if most tiresome meathod with the limited resources availible, as I don't think any earthmoving equipment besides shovels is coming along. The real problem would be injuries from such an offcenter landing.
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Fixed another shifting topic and removed the other artifacts as well....
Have been thinking about the mass of a fixed habitat which keeps being quoted as being 40 mt for a mass and I am wonder why so heavy.....
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The use of every square inch to cm means planning....
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Jennifer Lane is a PhD architecture candidate researching the optimal interior design for Mars habitats, so that when we eventually send humans to live on Mars, they have access to spaces that promote their mental and emotional health.
'PneumoPlanet' inflatable moon habitat could house 32 astronauts
https://www.space.com/pneumoplanet-infl … at-concept
Designing the interior of Mars habitats
https://www.curtin.edu.au/news/designin … -habitats/
“When people have lived in Mars and Antarctica simulation environments, they have had a lot of psychological problems, things like sensory deprivation, monotony and feelings of confinement,” Lane says.
“For example, one simulation had a second level, and a lot of the people who lived there said they felt like they were being watched, and that was an uncomfortable experience for them.
“These problems can be ameliorated by using lighting, colour, scale, material and volumetric qualities of the habitat, and there’s actually a lot of existing literature on these concepts.”
Introducing TERA by AI SpaceFactory
https://www.youtube.com/watch?v=3S57kpoQZcY
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