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    Thread: Penumbra Station
Post: RE: Penumbra Station

(06-01-2016, 08:25 PM)iancampbell Wrote: To improve tidal locking if that's what you want: Incorporate a long tether (maybe 5x the length of the station) with a big mass at the end, on the side faci...
AlanSE Worldbuilders Resources 12 21,796 09-26-2016, 10:24 AM
    Thread: Penumbra Station
Post: RE: Penumbra Station

Reading the last batch of comments here, I see some very valuable feedback. First, let me cover some of the sun-shading physics, as per stevebowers comments. Why 1 degree? Because that's roughly the ...
AlanSE Worldbuilders Resources 12 21,796 05-31-2016, 12:06 PM
    Thread: Penumbra Station
Post: RE: Penumbra Station

This doesn't work well with less-than-perfect orbits, because the angle of the penumbra is on the order of 1 degrees (although it depends on where you are). So I lack any idea of how a non-circular or...
AlanSE Worldbuilders Resources 12 21,796 05-27-2016, 01:22 PM
    Thread: Penumbra Station
Post: Penumbra Station

I want to put out there an artificial mega-structure concept. Specifically, a design that would be an attractive option for civilizations between around 1.0 and 0.75 on the Kardashev scale, who get en...
AlanSE Worldbuilders Resources 12 21,796 05-25-2016, 12:43 PM
    Thread: Gravity Balloons
Post: RE: Gravity Balloons

This is so cool! Amazing illustration. You went a bit of a different route than I had in mind. I think it's worth looking at, where you start with a liner, inflate it, and then add rocks around it wh...
AlanSE Worldbuilders Resources 24 55,015 03-25-2015, 04:01 AM
    Thread: Gravity Balloons
Post: RE: Gravity Balloons

(03-07-2014, 12:13 AM)Cray Wrote: Another thought: compression. The idea of a gravity balloon is that the weight of the shell is balanced against gas pressure. Something I ran into with Hawkings No...
AlanSE Worldbuilders Resources 24 55,015 05-24-2014, 04:30 AM
    Thread: Gravity Balloons
Post: RE: Gravity Balloons

(03-06-2014, 11:18 AM)Cray Wrote: I like the self-gravitating approach to resisting 1-bar of pressure. Instead of the many layers of flow dividers, you could just use a single-layered, closed alumi...
AlanSE Worldbuilders Resources 24 55,015 05-24-2014, 04:14 AM
    Thread: Gravity Balloons
Post: RE: Gravity Balloons

I had overlooked Orion's Arm. Although I knew of it from the self-gravitating ring concept, I never found any direct precedents for what I wrote about in the blog, but the Ederworld page really did h...
AlanSE Worldbuilders Resources 24 55,015 12-19-2013, 07:15 AM