----- Original Message ----- From: "Keith Henson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, April 13, 2007 4:46 PM Subject: There might be a way out
> The idea of solar power satellites has been around nearly 4 decades. > The > physics and engineering are sound and the economics *almost* makes > with > rockets. > > Now the possibility exists that an early nanotechnology product, > carbon > nanotubes, might be strong enough to build a space elevator. > > The efficiency of space elevators using laser powered climbers is > almost as > poor as rockets But if you can make one with a moving cable, then > it is > possible to lift parts for a power sat at low enough energy cost > that the > energy payback time is a day or less. > > http://eugen.leitl.org/A-2000-tonne-per-day-Space-Elevator1.ppt > > Free viewer for power point if you don't have one: > > http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=428D5727-43AB-4F24-90B7-A94784AF71A4 > > If you are interested, ask questions. > Howdy Keith! Glad to see you posting! You might be interested in joining [EMAIL PROTECTED] The web page is at http://tech.groups.yahoo.com/group/space-elevator/?yguid=80654082 Brian Dunbar posts to this group as does Blaise Gassend. There are dozens of physics and engineering minded people discussing the subject at a level far above the comprehension of simple mortals such as I. I forwarded the link from your previous post on the subject to this group a while back. xponent Cross Pollination Maru rob _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
