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Topic: Space elevator economics

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	Space elevator - Wikipedia, the free encyclopedia
		A space elevator cannot be an elevator in the typical sense (with moving cables) due to the need for the cable to be significantly wider at the center than the tips at all times.
		However, most space elevator designs call for the use of multiple parallel cables separated from each other by struts, with sufficient margin of safety that severing just one or two strands still allows the surviving strands to hold the elevator's entire weight while repairs are performed.
		Another type of space elevator that does not rely on materials with high tensile strength for support is the space fountain, a tower supported by interacting with a high-velocity stream of magnetic particles accelerated up and down through it by mass drivers.
	en.wikipedia.org /wiki/Space_elevator (7831 words)

	Space elevator economics
		With a space elevator, materials could be sent into orbit at a fraction of the current cost.
		Space elevators have high capital cost but low operating expenses, so they make the most economic sense in a situation where it would be used over a long period of time to handle very large amounts of payload.
		A space elevator built according to the Edwards proposal is estimated to require $40billion.
	www.sciencedaily.com /encyclopedia/space_elevator_economics (1060 words)

	Space elevator economics (Site not responding. Last check: 2007-10-10)
		With a space elevator, materials could be sent into orbit at afraction of the current cost.
		By the time the space elevator is build, Dr. Bradley Edwards expects technical advances to increase the efficiency to 2%.(see power beaming for details).
		Space elevators have high capital cost but low operating expenses, so they make the most economic sense in a situation whereit would be used over a long period of time to handle very large amounts of payload.
	www.therfcc.org /space-elevator-economics-198854.html (1031 words)

	Space Elevator (Site not responding. Last check: 2007-10-10)
		Though a space elevator would need to reach 35,785 km to geosynchronous orbit, since gravity drops off as the square of our distance from Earth, we can collapse the 35,785 km down to its equivalent height as if it were all in 1g, giving 4940 km.
		Getting a 100,000 km space elevator into position and insuring its survival is a daunting engineering challenge, and much of the book is dedicated to answering what-if scenarios and attempting to prove to the skeptical mind that such an ambitious undertaking is feasible.
		Much of the elevator deployment plans depend on the flawless execution of robotic mechanisms controlled remotely from Earth, including the trip from LEO to geostationary orbit, the deployment down to Earth, and the subsequent strengthening of the ribbon by robotic climbers that splice additional nanotube material onto the existing ribbon.
	www.misterc.ca /space_elevator.htm (2131 words)

	'Space Elevator' Planning Moves Steadily Ahead
		Preliminary studies of the space elevator suggest that it would be capable of lifting 5-ton payloads every day to all Earth orbits, the Moon, Mars, Venus or the asteroids.
		The space elevator is subject to the economy of scale and opens up the possibility of truly inexpensive access to space," Laubscher said.
		Space tourism, microgravity materials processing, astronomy all these and other uses that cant now be imagined could be tapped given the space elevator, he said.
	www.rense.com /general41/spac.htm (1425 words)

	Wired News: Critics Jump on Space Elevator (Site not responding. Last check: 2007-10-10)
		That was the clear message of the second international conference on the space elevator, jointly sponsored by Los Alamos National Laboratory and the Institute for Scientific Research, held this weekend in Santa Fe.
		The key figures in the space elevator movement, led by Brad Edwards, a former Los Alamos researcher who literally wrote the book on the concept, embrace a big-tent philosophy for moving toward a decision, two or three years down the road, on whether a space elevator might make practical sense.
		Andrew Price, a space elevator enthusiast who lives in Hope, British Columbia, was also added to the schedule, and despite the lack of preparation time gave a talk on his idea of a "Frankenstein's Elevator," triggering a robust discussion.
	www.wired.com /news/print/0,1294,60449,00.html (834 words)

	SPACE.com -- The Space Elevator Comes Closer to Reality
		An initial elevator, he added, is sure to give birth to even larger systems, capable of handling larger loads of up and down traffic.
		Space elevators for use on other worlds, like Mars and the Moon are receiving attention as well.
		Astrosociology is the study of astrosocial phenomena (social/cultural patterns related to space), a multidisciplinary field open to all scientists and engineers interested in "space and society" issues.
	space.com /businesstechnology/technology/space_elevator_020327-2.html (709 words)

	Getting A Lift From An Engineering Makeover
		The Space Elevator concept is a structure extending from the surface of the Earth to geo-stationary Earth orbit (GEO).
		The idea of the space elevator was first raised in 1960 by Russian engineer Yuri Artsutanov, and rehashed several times in the years that followed.
		Some four decades after the space elevator was first dreamed up, there are still plenty of reasons to be sceptical about it, even allowing for the tremendous technological advances that have been made during this period.
	www.spacedaily.com /news/future-01f.html (2606 words)

	Space elevator economics - Enpsychlopedia (Site not responding. Last check: 2007-10-10)
		With a space elevator, materials could potentially be sent into orbit at a fraction of the current cost.
		A comparison can therefore be made between the marginal costs of fully or partially expendable rocket launch and space elevator marginal costs.
		By the time the space elevator is built, Dr. Bradley Edwards expects technical advances to increase the efficiency to 2%.
	www.grohol.com /psypsych/Space_elevator_economics (1331 words)

	deseretnews.com \| Scientists envision 'space elevator' to deliver cosmic loads (Site not responding. Last check: 2007-10-10)
		The space elevator concept was dramatized in an Arthur C. Clarke science fiction novel, "The Fountains of Paradise," 26 years ago.
		Edwards' plan envisions a base station for the elevator located at sea level in the eastern equatorial Pacific Ocean, an area where weather is calm and lightning rarely strikes.
		The physics of building a space elevator are relatively simple, he said.
	deseretnews.com /dn/view/0,1249,595073481,00.html (1052 words)

	The Space Elevator - Elevator:2010
		A vision that will not only further space exploration and knowledge, but has the potential to shape the existential future of the human race for centuries to come.
		Elevator 2010 has joined the massive construction effort, adding energy, resources and new initiatives to the ever-growing number of organizations, companies, websites and enthusiasts focused on the technical, political and economic development of the Space Elevator.
		We firmly believe that the set of technologies that underlie the infinite promise of the Space Elevator can be demonstrated, or proven infeasible, within a 5 year time-frame.
	www.elevator2010.org (220 words)

	Going (Way) Up: 32-Million-Story 'Space Elevator' Rising toward Reality, Site Selection Online Insider
		It's the "Space Elevator," and its total projected cost is pegged at between $5 billion and $10 billion.
		The Space Elevator will be positioned on an ocean-based platform (pictured in an artist's rendering) somewhere in the equatorial Pacific, an area with almost no hurricanes and tornados.
		One of the biggest is space debris, particularly the tons of dead or dying satellites now floating in space after 40 years of human space exploration.
	www.conway.com /ssinsider/snapshot/sf031201.htm (1477 words)

	The Space Review: The space elevator: going up? part 1 (page 1)
		While the space elevator concept had gained a lot of attention recently, the general idea itself is not new.
		Early space elevator studies ran into problems because the strongest materials then available were far too weak to support the weight of the full elevator.
		In one of the first technical studies of the space elevator, performed in the 1950s by artificial intelligence pioneer John McCarthy, the strength of existing materials emerged as the biggest problem.
	www.thespacereview.com /article/47/1 (988 words)

	CBS News \| Going Up, WAY Up \| October 20, 2003 16:52:48
		Five to 10 scientists at any given time are analyzing the economics, technical specifications of how the elevator would work and possible health risks to those using it.
		The elevator shaft would be made of a very strong, thin, lightweight material called carbon nanotubes attached to the Earth's equator.
		"Space is not really being exploited or used as a revenue opportunity because it's so expensive to get to space," he said.
	www.cbsnews.com /stories/2003/10/14/tech/main577942.shtml (786 words)

	Notes from the Third Annual Space Elevator Conference (Site not responding. Last check: 2007-10-10)
		I enjoyed the opportunity to see a lot of faces that were in Santa-Fe, and I was happy to be recognized by most of the ISR and Los Alamos folks.
		Wrong frames for the space elevator: glamour of manned space exploration, the public that is captivated by this frame is already captivated, will not move the persuadable skeptics.
		Space is not high on the list of top priorities for the general public.
	www.mit.edu /people/gassend/spaceelevator/3rd-conference-notes/index.html (6043 words)

	Ribbon to the Stars: Science News Online, Oct. 5, 2002 (Site not responding. Last check: 2007-10-10)
		Close-up of a proposed robotic climber attached to the ribbon of a space elevator.
		The greatest concern for the space elevator appears to be impacts.
		The last space shuttle-tether experiment, which unspooled about 12 miles of cable, generated thousands of volts of electrical potential and kilowatts of power, burned through the insulation of the cable, and generated a tremendous explosive arc of electricity, that snapped the tether.
	www.sciencenews.org /20021005/bob9.asp (4329 words)

	American taxpayers unaware of conspiracies of the scientific world - PRAVDA.Ru (Site not responding. Last check: 2007-10-10)
		He was also the one to conceive the idea of Space elevator one hundred years ago.
		Space elevator in itself is a space station situated on or above the geocentric orbit and attached to the Earth by means of a strong cable.
		The 42-page report, half of which is mere illustrations, represents a mere explanation of the idea of the space elevator intended for elementary school pupils.
	english.pravda.ru /world/20/91/368/14685_.html (938 words)

	Re: Space elevator will be built around 2015
		And the sort of steady stream of payloads that is important to the space-elevator economic case would do wonders for RLV and ELV economics too.
		See, in particular, Jordin Kare's talk on space-elevator economics, included in the online presentations archive of a recent workshop: -- MOST launched 1015 EDT 30 June, separated 1046,
		Re: Space elevator will be built around 2015, E.R. Re: Space elevator will be built around 2015, Dr.
	www.usenet.com /newsgroups/sci.space.policy/msg04484.html (428 words)

	The Space Elevator Reference
		It would be great if the Liftport Group competed in the Space Elevator Competion but as of yet I don't see them listed as one of the entrants.
		The Space Elevator 2005 Competition slated for the weekend of October 22nd has added two new teams to the Tether Competition.
		Well it seems the race is on to see who will be the first to mass produce carbon nanotubes for a future space elevator.
	www.spaceelevator.com /index.rdf (1027 words)

	LiftPort Group Discussion Boards - current financial/infrastructure state (Site not responding. Last check: 2007-10-10)
		Could a space elevator be considered enough of a public good to qualify as a charity or a charitable trust in USA, Canada, Europe, Japan, or anywhere else?
		The monopoly won't last long, and the initial elevator could probably be used for "humanitarian" purposes, without too much cost to the initial operators of it, if it would help it to currently qualify as a charity.
		A platform might have other potential applications too, which would mean it would probably be useful to owners as collateral to borrow against for other pieces of the elevator or for other needs.
	www.liftport.com /forums/showthread.php?t=172 (419 words)

	Rocket Man Blog: Space Elevator (Site not responding. Last check: 2007-10-10)
		Just let me say that designing an anchor for a space elevator can definitely be "dealt with," but it would be a huge job.
		I have always assumed the required technology would eventually be available to make a space elevator feasible and that people smarter than I am would do the necessary math to define the construction parameters.
		Recently, the elevator has encountered a problem: A material or composite based on SWNT's has not been developed in the required amount and specificity to preserve the orignial tensile strength that these structures possess..
	www.rocketmanblog.com /2003/10/space_elevator.html (1687 words)

	The Space Elevator Books, Documents and References \| The Space Elevator Reference (Site not responding. Last check: 2007-10-10)
		With recent advancements in technology many people now believe it is possible to build a space elevator.
		The Space Elevator Documents and References section is in its infancy.
		The Space Elevator Reference is Copyright © 2004 SpaceRef Interactive Inc. All rights reserved.
	www.spaceelevator.com /docs (663 words)

	Some links of interest
		GURPS Transhuman Space should also be mentioned as the first application of a transhuman-type setting to rpg.
		Ribofunk, space opera, fantasy, social commentary, all of them are present in Lungfish Alpha as well as plenty of original ideas.
		It is also refreshing to see a space opera that does not have to rely on the existence of aliens.
	www.orionsarm.com /links.html (5337 words)

	chez Nadezhda :: Main Page
		Reassignment of roles within the military's bureaucracy, driven by a concern with undifferentiated "WMD" threats (now reacronymed an even less specific "WME" to the chagrin of the Armchair Generalist), raise suspicions that DOD may be repeating the same sorts of mistakes DHS has made in its reorganization.
		With the summer slow-season at an end, we are seeing some bigger-than-incremental steps that suggest the big players are starting to place their bets on one or another route for developing their business.
		And then the CNN article proceeds to recite, chapter and verse, an utter disconnect between statements by federal officials and what Americans were seeing -- simultaneously -- with their own eyes and hearing with their own ears on the air, regarding conditions at the Convention Center, uncollected corpses, evacuations of hospitals, and security.
	cheznadezhda.blogharbor.com (7447 words)

	WorldChanging: Another World Is Here: Add to Brian Eno's "250 Projects"
		The construction of a space elevator will greatly reduce the cost of accessing space and allow us inexpensive access to the resources and opportunities it offers.
		The space elevator should be ready for construction within two years and we could have an operational one in 15 years.
		Once they see their opinion matters, then there is the chance for domestic change.
	www.worldchanging.com /archives/000091.html (4922 words)

	Space Elevator (Orbital Tower) by Arthur C. Clarke from The Fountains of Paradise at Technovelgy.com
		Space Elevator (Orbital Tower) by Arthur C. Clarke from The Fountains of Paradise at Technovelgy.com
		If they could be mass-produced, Artsutanov's dream could become reality, and the economics of space transportation would be utterly transformed.
		At last we can build the Space Elevator or the Orbital Tower, as I prefer to call it.
	www.technovelgy.com /ct/content.asp?Bnum=720 (416 words)

	^zhurnal v.0.26
		See the ZhurnalWiki on zhurnal.net for a parallel "live" Wiki experiment.
		Then we ride up in a slow elevator that includes a narrow cushioned bench, presumably placed there for the elderly or infirm to take their rest on during the journey.
		He suggested that people, if placed in an "original position" of ignorance about where they would end up economically and politically and socially in the world, would choose a structure that would make sure the worst-off were in as good a shape as possible.
	zhurnaly.com /zhurnal26.html (10271 words)

	Trails Number 18 July 2001 - Texas State Library
		The need to see partnership as casting a large net, addressing the needs of urban, suburban, rural, rich, and poor in a manner that uses the library/museum network as broadly as possible.
		Stairs or the library's glass elevator, which provides a sweeping view of the courthouse square, provide access to the second floor.
		Many of the senior citizens were excited to find out that with more space and computers, staff would now be able to offer computer classes targeted to different age groups.
	www.tsl.state.tx.us /pubs/trails/trailscurrent.html (5650 words)

	Archspace 2005 Guide (Site not responding. Last check: 2007-10-10)
		Use of other orders can be useful in hitting certain fleets, such as those in the back or on the sides, as well as obtaining the additional critical hit chance gained from hitting a fleet from behind or on the side.
		As you can see, 9 Gunboats can carry 27 Fusion missiles in total, while 1 Frigate costs the same as 9 Gunboats but can carry only 8 Fusion missiles in total.
		Thus, +50% means that the enemy will need 50% more detection points to see the fleet at a given range.
	www.archspace.org /manual (4295 words)

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