Citizens of the Imperium

Citizens of the Imperium (http://www.travellerrpg.com/CotI/Discuss/index.php)
-   The Lone Star (http://www.travellerrpg.com/CotI/Discuss/forumdisplay.php?f=13)
-   -   beltstrike (http://www.travellerrpg.com/CotI/Discuss/showthread.php?t=40159)

Condottiere July 5th, 2019 03:54 AM

Or you can re-establish the Gold Standard.

Or strategically threaten those who've been hoarding.

Straybow July 13th, 2019 02:43 AM

At 2E19 kg, all the oil produced in the world, if devoted to the effort, split between fuel sent to propel the asteroid and the fuel required to launch it from earth to the asteroid, couldn't bring the asteroid here in a century. And, of course, we can't devote the entire transportation resources of the world for a century much less reach that launch capacity.

If we could magically use the energy to move the asteroid, a century at present production rates would amount to 25 kWh per kg. That would easily do it... of course, if we can magically move the asteroid we don't need the gold.

mike wightman July 13th, 2019 05:20 AM

You do not need to use the Earth's resources to provide the kinetic energy.

The asteroid has gravitational potential energy, lots of it. Give it a nudge and its orbit changes - it can fall towards the sun and potential energy becomes kinetic energy. This kinetic energy changes its orbit a bit more. Change its orbit to be in the viscinity of Earth from time to time and at these times of closest approach send the payloads of gold extracet by your minng robots.

Painting once side of the asteroid white would be enough - it would just take a long time, a very long time. Or put an ion engine powered by solar panels or a nuclear reactor. Again it will take a long time but not as long as painting it.

I would be very wary of trying to put this thing in actual orbit around the Earth or moon since it is going to be going a tad fast as it flies by on its new orbit.

The simplest method, and probably the cheapest, would be to send a robotic mining operation there powered by solar or nuclear. The robots would mine the gold and manufacture fuel for the return trip.
(can't gold be used as propellant for an ion engine... or you could build a mass driver and use waste rock as reaction mass)

BRJN July 13th, 2019 01:10 PM

The chunks you cut off the asteroid do not have to be neat. Send a series of small pieces (that would burn up in atmosphere in the event you are clumsy) which will fit into your in-orbit processing machinery. Small-ish vehicles to collect the arriving chunks can have higher speeds and maneuverability than if they had to handle multi-deca-ton asteroidlets.

Of course this stops working well when there are two rivals trying to catch the incoming rocks.

kilemall July 13th, 2019 03:46 PM

Quote:

Originally Posted by BRJN (Post 604175)
The chunks you cut off the asteroid do not have to be neat. Send a series of small pieces (that would burn up in atmosphere in the event you are clumsy) which will fit into your in-orbit processing machinery. Small-ish vehicles to collect the arriving chunks can have higher speeds and maneuverability than if they had to handle multi-deca-ton asteroidlets.

Of course this stops working well when there are two rivals trying to catch the incoming rocks.


IMTU the LaGrange points host solar foundries, originally built to melt tailings from He3 lunar mining into orbital city colonies. They get repurposed into asteroid smelters, and yes the chunks need to be small to be allowed anywhere near Earth.


It's a continuous stream, a river of rock that keeps the industrial machine fed. Course, what makes that work is Traveller M-Drive and power plants, continuous accel/decel.

flykiller July 13th, 2019 03:51 PM

Quote:

Of course this stops working well when there are two rivals trying to catch the incoming rocks.
(laugh) sounds like a grade-school dodgeball contest ....

Quote:

Course, what makes that work is Traveller M-Drive and power plants
bingo. chemical fuels and solar panels can't do it.

mike wightman July 13th, 2019 04:05 PM

Yes they can. It's a question of investment, not capability.

When it is cheaper to harvest rare earths and the like from asteroids than it is to try and exploit the dwindling resources here on Earth then it will be done.

flykiller July 13th, 2019 04:41 PM

Quote:

It's a question of investment, not capability.
in theory, sure. in practice investors want to see returns on their investments within their lifetimes, and if they don't see those returns then they just won't invest.

Quote:

When it is cheaper to harvest rare earths and the like from asteroids than it is to try and exploit the dwindling resources here on Earth then it will be done.
in theory, sure. in practice the costs would be so high that no-one will be able, let alone willing, to muster the resources to do so.

mike wightman July 13th, 2019 04:53 PM

The cost to orbit is dropping. Moon stations and bases will be built. Once the bases are built industry will follow. Cost will fall again.

In thirty years time when the world is being held to ransom by those few countries that have the mineral resources the alternative option to catastrophic war will be space industry and resource exploitation.

Trouble is China, Russia and possibly India may well get there first.

flykiller July 13th, 2019 11:18 PM

Quote:

China, Russia, and possibly India
nah. china's debt ponzi economy is rolling over, not to mention they're on the edge of a huge demographic decline. russia ... maybe. they have the tech, but they lack the economic weight. as for india, they're like brazil - the superpower of the future, and always will be.

Quote:

Moon stations and bases will be built.
and they'll suffer the same fates as the viking colonies in vinland and greenland.


All times are GMT -4. The time now is 03:55 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2010-2013, Far Future Enterprises. All Rights Reserved.