09-13-2019, 10:40 PM | #41 | |
Join Date: Feb 2007
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Re: Realistic STL Interstellar Missions
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Also, 1 or 2 particular assumptions can change the calculus. For ex, suppose a reliable, effective 'sleeper' tech exists, so the crew and passengers can pass the 200 years in suspended animation. (Never mind how probable that is in itself, assume it exists.) For a group that wants to get away from Other Group, sleeper tech makes a 200 year journey a lot more tempting. The same generation arrives that sets out, and the journey feels much shorter. The combination of sleeper tech and frozen (or otherwise suspended) embryos could enable a new colony to create a large population in a relatively short time, too. Other particular technologies can change the equation, as well.
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HMS Overflow-For conversations off topic here. Last edited by Johnny1A.2; 09-13-2019 at 10:48 PM. |
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09-13-2019, 11:03 PM | #42 |
Join Date: Feb 2016
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Re: Realistic STL Interstellar Missions
Realistically, a TL10 society seems to need around $10 million per person, a TL11 society $5 million per person, and a TL12 society $2.5 million per person (at least from my estimates) for a STL interstellar colony mission. I would suggest that a society cannot sustain more spending on such missions than 1% of their GDP. Assuming a sustainable population for the Sol System of 10 billion and the Space per capita income, your annual colonization budget comes to $6.7 trillion at TL10, $9.7 trillion at TL11, and $13 trillion at TL12.
When you divide by the cost per person, that translates to 670,000 people per year at TL10, 1.94 million per year at TL11, and 5.2 million per year at TL12. Societies may be able to sustain up to 5% per year, which would increase the number of people fivefold, if they use biotechnology to improve health and longevity (the savings in health care may be diverted to space colonization). Such a society would likely need affordable and easy longevity treatments, perhaps in the form of symbiotic parasites genetically engineered to produce longevity drugs. Imagine a society where the average person live 300 years due to symbiotic parasites and benefits from comprehensive eugenics genetic engineering. A society where the average person possesses IQ 12 and Intuition would be radically different than our society. People would not take nearly as many risks and would usually be willing to take time to solve problems. |
09-17-2019, 09:13 AM | #43 |
Join Date: Aug 2010
Location: The Land of Enchantment
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Re: Realistic STL Interstellar Missions
A mid-mission time frame strikes me as natural for a Horror game, due to the inherent isolation. Seven light years to the nearest help sure is isolated...
Otherwise, I think arrival is the obvious time frame for an adventure. I loved Beowulf's Children, for example. Coyote had a neat twist, too.
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I'd need to get a grant and go shoot a thousand goats to figure it out. |
09-17-2019, 12:42 PM | #44 |
Join Date: Dec 2007
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Re: Realistic STL Interstellar Missions
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09-17-2019, 01:28 PM | #45 |
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Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: Realistic STL Interstellar Missions
I would hazard to step up that to a system-wide scale project needing resources from more than just one gravity well.
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09-17-2019, 02:18 PM | #46 |
Join Date: Feb 2016
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Re: Realistic STL Interstellar Missions
I would agree. For example, it would be cheaper to build it in the Neptunian Lagrange Points rather than Earth orbit (in delta-v terms).
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09-17-2019, 02:45 PM | #47 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Realistic STL Interstellar Missions
Depends on your drive profile; the Oberth effect can make launching from lower orbit cheaper.
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09-17-2019, 05:17 PM | #48 |
Join Date: Feb 2016
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Re: Realistic STL Interstellar Missions
Realistic high delta-v drives have 0.005g acceleration, far too puny for Oberth maneuvers.
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09-17-2019, 05:35 PM | #49 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Realistic STL Interstellar Missions
It may be profitable to have more than one drive system.
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09-17-2019, 05:56 PM | #50 |
Join Date: Mar 2005
Location: Maitland, NSW, Australia
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Re: Realistic STL Interstellar Missions
This is an increase of almost 50%. It seems pretty dramatic to me.
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