Hi Ian, Well, I actually think this is an adequate list to discuss it since the principal reason for building the elevator is the high cost to deliver payload...
... Mac, if your doing a thesis you might want to know that the Titan is no longer available. Currently the ONLY U.S. Launchers are Delta and Atlas.... Randy ...
If you look in the file section of this group, there is a doc that states cost estimates for differnet ELVs. I don't understand why this group is not the best...
From: Herbert Murray "I don't understand why this group is not the best place to talk about cost to orbit, and cost for SE. The big selling point of a SE is...
I usually at least take note of TOTN:Science Friday's shows. I flat out missed it this time. I've listened to the first thirteen minutes - by and large...
From: RanulfC@... "Actually the 'anchor' has to be within easy shipping distance of the port. Like a seaport with a 'nearby' airport. " Since we'd be...
I have a copy of the transcript in the files section of the NSS yahoo group. I would post it on this site but I received permission from NPR to only post on...
From a security point of view a space elevator would be considered critical infrastructure. I would think you would want to off load cargo away from the base...
With Japan already building a prototype PLATFORM with runway. It might by easier (read faster) to "lease" a Megafloat for testing as future SE Base platform. ...
NPR Talks Skyhooks Posted by Zonk on Sunday June 05, @05:37PM from the beyond-the-clouds dept. David writes "NPR's Talk of the Nation this past week featured...
... Playing the DA, (Devils Advocate :o) here, why would we be 'building' anything like either of them for the near future? We've already figured out that the ...
RanulfC@...
Jun 6, 2005 11:47 pm
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... Or indeed why build anything at all? Use standardized shipping containers and you can lease what office, warehouse and dock facilities you need. Oh, I'll...
CNTs can only be bent a certain # of degrees before they break. Scaling down knots tied with conventional rope materials, would place the nano-knots far past...
... Their stiffness may indeed make bending individual tubes them into knots difficult. However, Fig. 1 in the "Direct Synthesis of Long Single-Walled Carbon...
Dear All: I've just completed an interview with Michael Laine, CEO of the Liftport group. It's online in Windows Media format at the following page: ...
... I donīt have the reference but as far as I was told, the single walled nanotubes can be bent as much as you please, they just buckle, and when released,...
... buckle, ... I thought the same thing about CNT rings/chain-mail as a ribbon substrate before googling around and checking out the Liftport archived...
Interesting link, that. It says, essentially: Early theoretical predictions of nanotube strength were greatly exaggerated. We now know it is only around 50GPa....
... No, it translates to: goodbye Phillip's dumb and inattentive breeze through the article. CNT bending is not called axial compression, it is called bending...
I believed CNTs have been measured between 50 GPA and 120 GPA. Models indicate up to 300 GPA. The real problem to be solved is transferring the load from the...
... Wouldn't it be pretty to think so? In fact, neither calculating nor measuring the tensile strength and ultimate yield strength of individual CNTs is simple...
As ever, you make good points Monte. I would add one rider that will limit some of the uncertainty, even if it hasn't yet. Although we tend to discuss GPa, the...
... Yes, that's fair to say. The trouble is, the lower credible limit could easily put you into a regime of high taper and high total ribbon mass that plays...
... material *must* be possible.< Agreed, your caution about hand-waving is laudable. Let us hope that the CNT folks will be able to disclose some tangible...
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