space-elevator at Yahoo! Groups

Space is big business

Craig Holm — Tue, 23 Jun 2009 01:24:56 GMT

... or so says this IEEE article. http://spectrum.ieee.org/aerospace/space-flight/space-is-big-business

Re: Star Tram

Andreas — Sat, 20 Jun 2009 01:33:09 GMT

... To be feasible, both StarTram and coil gun will need to be designed in such a way that the energy needed during launch is first stored in the system, as

Re: Star Tram

William Haught — Fri, 19 Jun 2009 16:22:36 GMT

As I recall the Sunshield episode of Discovery Project Earth considered a coil gun for launching lenses to deflect light away from Earth. The project called

Re: Star Tram

Andreas — Wed, 17 Jun 2009 16:30:30 GMT

... Here is another very interesting link about superconducting cable in very practical utility applications since about 2000, when we were all very much

Re: SSP Swarm Array

Andreas — Sun, 07 Jun 2009 22:45:34 GMT

Just another thought on the swarm array: The diffraction limit says the transmitter antenna size needs to be proportional to wavelength, and the thinned array

Re: Star Tram

Herbert Murray — Sun, 07 Jun 2009 14:10:59 GMT

I believe Star Tram is more like 600 Billion instead of 60 Billion. Still 0.2 % of GDP over 20 years is very good space investment.

Re: Star Tram

Herbert Murray — Sun, 07 Jun 2009 13:56:53 GMT

I would say a 60 billion for a Star Tram is deal. More less half the price of the space station. Just for comparsion the 2009 US DOD budget is more than 600

Re: Kinetic Energy Storage

Andreas — Fri, 05 Jun 2009 21:45:27 GMT

... I don't think there is much, but it follows directly as a cross between the launch loop (particularly the circles where the loop turns around) and a

Re: Tower

Craig Holm — Fri, 05 Jun 2009 18:59:59 GMT

Aye. Therein lies the rub. Grotleg ! CH Check out www.craigholmfiction.com ... From: Herbert Murray Subject: [space-elevator] Re:

Re: Star Tram

Jo Jaquinta — Fri, 05 Jun 2009 16:02:15 GMT

... size, ... strength. I'm not exactly seeing how, but I've only been skimming this conversation. ... I'm all about flywheels. :-) Rub my nose in a previous

Re: Star Tram

Ian Woollard — Fri, 05 Jun 2009 14:12:55 GMT

... No, no idea. It was on UK TV years ago. It was absolutely the minimum you could imagine- it was a wire going around in a cable. It did lift though. ... --

Re: Star Tram

Andreas — Fri, 05 Jun 2009 14:11:14 GMT

... Yes, I remember, I called that a sputtering chain reaction back when we discussed it elsewhere. It could have been a show-stopper, but it turns out to be

Re: Star Tram

Andreas — Fri, 05 Jun 2009 13:59:09 GMT

... Really? That would be nice to see. Any idea where it could be found? Andreas

Re: Star Tram

Ian Woollard — Fri, 05 Jun 2009 13:46:08 GMT

... They do that because the turbine is spinning much more slowly; also the geometry is radically different. I think turbines spin at about 350 m/s, whereas a

Re: Star Tram

Andreas — Fri, 05 Jun 2009 13:32:56 GMT

... I am not an expert, but I think turbomolecular pumps have multiple stages, and each has blades angled just the right way, and they have to have a pretty