I've seen a lot of discussion on this list about the feasibility of the space elevator concept but not much, if any, discussion about its applications. Imagine...
Btw, how does a space elevator work for the Moon? The model is radically diferent from the Earth SE model, as the Moon rotates so slowly. The model must take...
... Make a profit. As I think you correctly point out, this is critical to *actually getting it built*. But some of your comments on logistics are interesting....
Hi Ricardo, I think there are two models for Luna SEs, one type would be attached to the far side of the moon, and the motion of the moon rotating in sync with...
The mail might deserve a deeper reply, but I am short on attention at the moment. Comments follow. ... Make a profit? Save the universe? The t-shirt...
Brian Dunbar
Brian.Dunbar@...
May 4, 2004 2:42 am
4270
I don't believe a Moon SE is very practical. As Greg explained, a lunar SE pointed toward Earth would have to have a counterweight somewhat to this side of...
So generally question comes what are the difference between three kinds of space elevator application wise. Apparently what I think 1) Earth Space Elevator...
... You're right of course about the requirement to move the anchor around. The original poster had said "converted oil rigs" and when I typed the above I was...
Brian Dunbar
Brian.Dunbar@...
May 4, 2004 1:51 pm
4275
Em Ter 04 Mai 2004 06:08, Debiprasad Ghosh escreveu: (...) ... (...) I don't know the exact numbers for the length of a space elevator at L2, but I remember...
Several recent news items of interest, in case you missed them... NASA Will Invite Ideas for Centennial Challenges [By: Michael Huang on: Mon 26 of Apr, 2004] ...
Recently as I was looking at yet another tether design, I noticed that they had flywheels on the counterweight to store energy for reeling in the tether, etc....
Hi Abraham, If I recall, there was a discussion on flywheels in the fall. The energy density wasn't at all good enough. ... You could also deal with the...
... The following link is to a pdf file dated 05.07.2002 http://www.aasias.com/PDFA/Zylon_DSM.pdf It states that zylon has a tensile strength gpa of 5.8. Now,...
... Yep. My first post to the list was on the same subject. ... I did not agree with the conclusions at the time. The energy densities of flywheels are among...
Hi Jo, ... At the time, we did our calculations using the same CNT data as we use for the tether. The flywheel ends up having having an energy density about 2...
... Hi Jo, intuitively I would expect that the mass requirements for a flywheel and its associated bearings (I'm assuming magnetic bearings would be the best?)...
The 'pardon our dust' sign has yet to come down, but we've moved our website to a new provider, and taken the opportunity to spruce things up a bit. If you...
Brian Dunbar
Brian.Dunbar@...
May 6, 2004 6:33 am
4285
Lúcio de Souza Coelho <lucio@...> wrote: Em Ter 04 Mai 2004 06:08, Debiprasad Ghosh escreveu: (...) ... (...) I don't know the exact numbers for the...
Em Qui 06 Mai 2004 09:16, Debiprasad Ghosh escreveu: (...) ... (...) Maybe your \begin{SF} should be put at the top of the text, for I think that it is...
Lúcio de Souza Coelho <lucio@...> wrote: Em Qui 06 Mai 2004 09:16, Debiprasad Ghosh escreveu: (...) ... (...) Maybe your \begin{SF} should be put at...
this is not strictly space-elevator talk, but i have a hunch that someone on this board will be able to answer a related question which has troubled me for...
... Indeed, a conductive tether deployed from an orbiting spacecraft can be used in ways similar to what you describe. There are two modes of operation: 1) You...
Blaise Gassend <blaise.gassend_yahoo@...> wrote:There are two modes of operation: 1) You drive a current through the tether. A current in a magnetic field ...
Cheers Blaise, group, and tethers: My last couple of messages were not posted. AGAIN. So, please tell me or forgive me if I have asked the wrong questions in...
Hi Phxrizn, ... I wasn't really considering any variations in ambient plasma density. I expect they influence the amount of of current you can get to flow, but...
Hi Blaise, Thank you so much for talking with me yesterday. It has opened my eyes on other things I need to address in SE. I appreciate being involved with...
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