Vesoljsko dvigalo: Razlika med redakcijama
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Vrstica 8:
Po kablu bi potovalo dvigalo, napolnjeno s tovorom. Način pogona dvigala še ni povsem določen. Ta način transporta ne zahteva doseganja [[Ubežna hitrost|ubežne (izhodne) hitrosti]], dvigalo lahko zapusti Zemljo pri poljubni hitrosti.<ref name=Edwards>Edwards, Bradley Carl. [http://www.niac.usra.edu/studies/521Edwards.html The NIAC Space Elevator Program]. NASA Institute for Advanced Concepts</ref>
O vesoljskem dvigalu je prvi pisal [[Konstantin Edvardovič Ciolkovski]] leta 1895.<ref>{{cite web|url = http://www.g4tv.com/techtvvault/features/35657/Space_Elevator_Gets_Lift.html|title = Space Elevator Gets Lift|accessdate = September 13, 2007|last = Hirschfeld|first = Bob|date = January 31, 2002|work = TechTV|publisher = G4 Media, Inc.|archiveurl = http://web.archive.org/web/20050608080057/http://www.g4tv.com/techtvvault/features/35657/Space_Elevator_Gets_Lift.html|archivedate = June 8, 2005|quote = The concept was first described in 1895 by Russian author K. E. Tsiolkovsky in his "Speculations about Earth and Sky and on Vesta."}} {{Webarchive|url=https://web.archive.org/web/20050608080057/http://www.g4tv.com/techtvvault/features/35657/Space_Elevator_Gets_Lift.html |date=2005-06-08 }}</ref> Njegov predlog je bil prostostoječi stolp iz Zemlje pa vse do geostacionarne orbite. Ta struktura bi imela velike kompresijske obremenitve, od leta 1959 naprej je večina predlogov z natezno strukturo. Sila [[gravitacija|gravitacije]] bi bila najmočnejša na spodnjem delu kabla, na zgornjem delu pa bi bila močnejša [[centrigualna sila]] zaradi [[Gibanje Zemlje|vrtenja Zemlje]] - tako bi kabel ostal napet.
Na Zemlji, ki ima razmeroma močno gravitacijo, trenutno ni na voljo dovolj močnega materiala za kabel. Se pa razvijajo [[karbonska nanocevka|karbonske nanocevke]] in [[boron nitridove nanocevke]], ki imajo izredno veliko [[natezna trdnost|natezno trdnost]] in bi lahko v prihodnosti z njimi zgradili dvigalo. Koncept vesoljskega dvigala je možen tudi na drugih nebesnih telesih, npr. na Luni ali Marsu. Ker imajo ta telesa šibkejšo gravitacijo, niso potrebni tako močni materiali, lahko bi uporabili še obstoječe npr. [[kevlar]].<ref>[[Hans Moravec|Moravec, Hans]] (1978). [http://www.frc.ri.cmu.edu/~hpm/project.archive/1976.skyhook/papers/scasci.txt ''Non-Synchronous Orbital Skyhooks for the Moon and Mars with Conventional Materials'']. Carnegie Mellon University. frc.ri.cmu.edu</ref>
Vrstica 20:
* Edwards BC, Ragan P. "Leaving The Planet By Space Elevator" Seattle, USA: Lulu; 2006. ISBN 978-1-4303-0006-9
* Edwards BC, Westling EA. ''The Space Elevator: A Revolutionary Earth-to-Space Transportation System.'' San Francisco, USA: Spageo Inc.; 2002. ISBN 0-9726045-0-2.
* [http://www.nss.org/resources/library/spaceelevator/2000-SpaceElevator-NASA-CP210429.pdf] {{Webarchive|url=https://web.archive.org/web/20150328040627/http://www.nss.org/resources/library/spaceelevator/2000-SpaceElevator-NASA-CP210429.pdf |date=2015-03-28 }} <nowiki>[PDF]</nowiki>. A conference publication based on findings from the Advanced Space Infrastructure Workshop on Geostationary Orbiting Tether "Space Elevator" Concepts, held in 1999 at the NASA Marshall Space Flight Center, Huntsville, Alabama. Compiled by D.V. Smitherman, Jr., published August 2000.
* "The Political Economy of Very Large Space Projects" [http://www.jetpress.org/volume4/space.htm HTML] [http://www.jetpress.org/volume4/space.pdf PDF], John Hickman, Ph.D. ''[[Journal of Evolution and Technology]]'' Vol. 4 – November 1999.
* [http://spectrum.ieee.org/aerospace/space-flight/a-hoist-to-the-heavens A Hoist to the Heavens] By Bradley Carl Edwards
Vrstica 30:
* [http://www.spaceelevator.com/ The Space Elevator Reference]
* [http://spaceelevatorwiki.com/ Space Elevator Engineering-Development wiki]
* [http://science.nasa.gov/headlines/y2000/ast07sep_1.htm Audacious & Outrageous: Space Elevators] {{Webarchive|url=https://web.archive.org/web/20080919070924/http://science.nasa.gov/headlines/y2000/ast07sep_1.htm |date=2008-09-19 }}
* [http://www.bildung-kultur.org/167/ Ing-Math.Net (Germany)] – Ing-Math.Net (German Max-Born Space Elevator Team 2006) (German)
* [http://www.warr.de/spaceelevator Project of the Scientific Workgroup for Rocketry and Spaceflight](WARR) (German)
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