Log in

No account? Create an account

Previous Entry | Next Entry


I need help finalizing the plans for my WonderSaga. I need someone who actually understands calculus. Does such a person exist? If so, will you please help me?


May. 21st, 2009 02:51 pm (UTC)
I'd actually recommend a larger donut hole, as the centrifugal force would increase with the inner radius, so that the station could spin slower for the same gravitational effect.
If you went with a 3 mile diameter center and an average of 1 mile high (hehehe) soil, you'd be looking at a distance of 22 miles to go from a starting point all around the station and return to the same point.
May. 21st, 2009 02:54 pm (UTC)
I'd still recommend a bigger donut hole if you want it to be "realistic". I can probably figure out what the rotational speed would be to simulate earth's gravity. :)

Oh man, am I ever a geek.
May. 21st, 2009 02:56 pm (UTC)
See, this I know nothing about :D I just know how to crunch the numbers ;)
May. 21st, 2009 03:12 pm (UTC)
Sweet, thank you so much! I suppose I'll go with 3 mile center, then, but is that just the hole itself or the hub that it's rotating around?

That gives a different length than kiwiria's figuring - 3 ; 56.5 ; 7.6 (Diameter of Centre;Length;Segments [all lengths in miles]). Is that because of the soil depth?

If you can figure out the rotational speed, that would be so awesome. You would not be a geek, but a hero. I've been so far working on the very simplified assumption that one rotation/min = 1 g.
May. 21st, 2009 03:20 pm (UTC)
I was including the hub in the hole.
Kiwiria and I are using different formulas. Mine's right, as I'm infallible.

I'm off to work now, so I won't be able to work on it for a bit, but i'll get back to you on the rotational speed thing. Where did you come up with your 1g per turn per minute?
May. 21st, 2009 03:27 pm (UTC)
Okay, thanks! That gives me a bit of wiggle room with the size of the hub then.

I really appreciate your help! Coddle me at your own leisure. I'll have to include you guys in the dedication when I become breakout famous. Or you can have a character in your honor, if you like.

I'm not sure where I got the rotation thing. I'd done a lot of reading last year just before nano, and I saw that somewhere during the course of that. I don't know what size a colony they were suggesting it for, though. I did, but I can't remember and don't have all my old bookmarks on this computer.

Incidentally, it seems I just stopped getting lj notifications. Ha!
May. 24th, 2009 10:13 pm (UTC)
I'd love to have a character in my honour. :)

I did some (very) brief research about rotational speed to gravity ratios and it looked more complicated than would be practical. I may see if there is an easier way to figure it out, but don't hold your breath.
May. 25th, 2009 09:07 pm (UTC)
Bummer. Oh well, thanks anyway!
May. 21st, 2009 03:22 pm (UTC)
Hm, I'm thinking I may have to go with a soil depth of 1.5 miles after all. Having the main farmland be two miles below the light source might be a bit too much.