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The Space Elevator

It is expected that should a space elevator be completed the structure will drastically reduce the cost of reaching space, finally making large scale projects such as SPS and asteroid mining a distinct possibility. Even so, there are a number of challenges that must be overcome. Join us to discuss everything related to the space elevator.

A few of the many topics that will need to be considered are the base tower, space station, and counter weight. How will the cable be constructed and what materials will be used? What would be the optimal propulsion system and how will the elevators themselves work? And, of course, there are still many other issues that need to be considered.

"Never doubt that a small group of thoughtful, committed citizens can change the world, indeed, it's the only thing that ever has." - Margaret Mead

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Re: Laser Ablation Propulsion
... I think you mean a milliradian. Numbers I have seen is 3-4 mrad for commercial diodes. If you can cram one kW into a square cm, you need a focal length of
Posted - Thu Oct 16, 2008 4:23 am
Andreas
awnd329
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Re: Laser Ablation Propulsion
LOL, and read the bit about Jordin Kare's company here: http://nextbigfuture.com/2008/10/space-power-conference-highlights.html -- -Ian Woollard We live in an
Posted - Thu Oct 16, 2008 12:38 am
Ian Woollard
wolfekeeper
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Re: Laser Ablation Propulsion
... It depends whether you consider reaching the very magnifications needed to get a useful image size that can fit in multiple laser diodes by using multiple
Posted - Wed Oct 15, 2008 8:08 pm
Ian Woollard
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Re: Laser Ablation Propulsion
... Let's say your target is D = 10 km away. Let's further say the target is R = 10 m in diameter. The diameter of the image of the target in the image plane
Posted - Wed Oct 15, 2008 6:47 pm
Andreas
awnd329
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Re: Laser Ablation Propulsion
... This is formally correct ;-) You just arrange the optics so that they all still hit the target... ... Careful here- light is reversible, so if you've
Posted - Tue Oct 14, 2008 10:32 pm
Ian Woollard
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2007 136 16 45 16 17 98 195 13 13 31 10 2
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