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• Space_elevator abstract "A space elevator is a proposed type of space transportation system. Its main component is a ribbon-like cable (also called a tether) anchored to the surface and extending into space. It is designed to permit vehicle transport along the cable from a planetary surface, such as the Earth's, directly into space or orbit, without the use of large rockets. An Earth-based space elevator would consist of a cable with one end attached to the surface near the equator and the other end in space beyond geostationary orbit (35,800 km altitude). The competing forces of gravity, which is stronger at the lower end, and the outward/upward centrifugal force, which is stronger at the upper end, would result in the cable being held up, under tension, and stationary over a single position on Earth. Once deployed, the tether would be ascended repeatedly by mechanical means to orbit, and descended to return to the surface from orbit.The concept for a space elevator was first published in 1895 by Konstantin Tsiolkovsky. His proposal was for a free-standing tower reaching from the surface of Earth to the height of geostationary orbit. Like all buildings, Tsiolkovsky's structure would be under compression, supporting its weight from below. Since 1959, most ideas for space elevators have focused on purely tensile structures, with the weight of the system held up from above. In the tensile concepts, a space tether reaches from a large mass (the counterweight) beyond geostationary orbit to the ground. This structure is held in tension between Earth and the counterweight like an upside-down plumb bob. Space elevators have also sometimes been referred to as beanstalks, space bridges, space lifts, space ladders, skyhooks, orbital towers, or orbital elevators.On Earth, with its relatively strong gravity, current technology is not capable of manufacturing tether materials that are sufficiently strong and light to build a space elevator. However, recent concepts for a space elevator are notable for their plans to use carbon nanotube or boron nitride nanotube based materials as the tensile element in the tether design. The measured strength of these molecules is high compared to their densities and they hold promise as materials to make an Earth-based space elevator possible.The concept is also applicable to other planets and celestial bodies. For locations in the solar system with weaker gravity than Earth's (such as the Moon or Mars), the strength-to-density requirements are not as great for tether materials. Currently available materials (such as Kevlar) are strong and light enough that they could be used as the tether material for elevators there.".
• Space_elevator thumbnail Tsiolkovsky.jpg?width=300.
• Space_elevator wikiPageExternalLink displayStory.cfm?story_id=7001786.
• Space_elevator wikiPageExternalLink ast07sep_1.htm.
• Space_elevator wikiPageExternalLink dn13552-space-elevators-face-wobble-problem.html?feedId=online-news_rss20.
• Space_elevator wikiPageExternalLink spaceelevatorwiki.com.
• Space_elevator wikiPageExternalLink a-hoist-to-the-heavens.
• Space_elevator wikiPageExternalLink Non-rocketSpaceLaunchAndFlight,.
• Space_elevator wikiPageExternalLink 167.
• Space_elevator wikiPageExternalLink OrbitalTower_ME362.pdf.
• Space_elevator wikiPageExternalLink www.isec.org.
• Space_elevator wikiPageExternalLink CLARK1.HTM.
• Space_elevator wikiPageExternalLink space.htm.
• Space_elevator wikiPageExternalLink space.pdf.
• Space_elevator wikiPageExternalLink SE_Roadmap_v1beta.pdf.
• Space_elevator wikiPageExternalLink 2000-SpaceElevator-NASA-CP210429.pdf.
• Space_elevator wikiPageExternalLink nov0301.htm.
• Space_elevator wikiPageExternalLink space_elevator_020327-1.html.
• Space_elevator wikiPageExternalLink www.spaceelevator.com.
• Space_elevator wikiPageExternalLink viewnews.html?id=337.
• Space_elevator wikiPageExternalLink article5529668.ece.
• Space_elevator wikiPageExternalLink spaceelevator.
• Space_elevator wikiPageExternalLink space-elevator.
• Space_elevator wikiPageID "29192".
• Space_elevator wikiPageRevisionID "606413567".
• Space_elevator date "October 2012".
• Space_elevator expiry "2014-05-06".
• Space_elevator hasPhotoCollection Space_elevator.
• Space_elevator small "yes".
• Space_elevator subject Category:Emerging_technologies.
• Space_elevator subject Category:Exploratory_engineering.
• Space_elevator subject Category:Hypothetical_technology.
• Space_elevator subject Category:Megastructures.
• Space_elevator subject Category:Space_access.
• Space_elevator subject Category:Space_colonization.
• Space_elevator subject Category:Space_elevator.
• Space_elevator subject Category:Spacecraft_propulsion.
• Space_elevator subject Category:Spaceflight_technologies.
• Space_elevator subject Category:Vertical_transport_devices.
• Space_elevator type Artifact100021939.
• Space_elevator type Device103183080.
• Space_elevator type Instrumentality103575240.
• Space_elevator type Object100002684.
• Space_elevator type PhysicalEntity100001930.
• Space_elevator type VerticalTransportDevices.
• Space_elevator type Whole100003553.
• Space_elevator comment "A space elevator is a proposed type of space transportation system. Its main component is a ribbon-like cable (also called a tether) anchored to the surface and extending into space. It is designed to permit vehicle transport along the cable from a planetary surface, such as the Earth's, directly into space or orbit, without the use of large rockets.".
• Space_elevator label "Ascenseur spatial".
• Space_elevator label "Ascensor espacial".
• Space_elevator label "Ascensore spaziale".
• Space_elevator label "Elevador espacial".
• Space_elevator label "Ruimtelift".
• Space_elevator label "Space elevator".
• Space_elevator label "Weltraumlift".
• Space_elevator label "Winda kosmiczna".
• Space_elevator label "Космический лифт".
• Space_elevator label "مصعد الفضاء".
• Space_elevator label "太空電梯".
• Space_elevator label "軌道エレベータ".
• Space_elevator sameAs Orbitální_výtah.
• Space_elevator sameAs Weltraumlift.
• Space_elevator sameAs Ascensor_espacial.
• Space_elevator sameAs Ascenseur_spatial.
• Space_elevator sameAs Lift_luar_angkasa.
• Space_elevator sameAs Ascensore_spaziale.
• Space_elevator sameAs 軌道エレベータ.
• Space_elevator sameAs 우주_엘리베이터.
• Space_elevator sameAs Ruimtelift.
• Space_elevator sameAs Winda_kosmiczna.
• Space_elevator sameAs Elevador_espacial.
• Space_elevator sameAs m.0775x.
• Space_elevator sameAs Q1473823.
• Space_elevator sameAs Q1473823.
• Space_elevator sameAs Space_elevator.
• Space_elevator wasDerivedFrom Space_elevator?oldid=606413567.
• Space_elevator depiction Tsiolkovsky.jpg.
• Space_elevator isPrimaryTopicOf Space_elevator.