The NSTI Nanotech 2007 is calling for papers. I wonder if the subject of SE will come up? http://www.nsti.org/Nanotech2007/symposia/Composites_Interfaces.html...
Though I didn't read the article, I think the idea goes back to the 1950s. The problem from then until recently was the weight of the tether, which needed to...
... 1950s. The problem from then until recently was the weight of the tether, which needed to be 15000 - 45000 ft or so long and have a lot of tensile...
True. They do share some of the same issues. The space elevator has significantly more issues to resolve than tethering a high altitude kite. Of course...
... Speaking of turbines, 80% of the world's electrical power is generated by steam turbines. Tensile strength and thermal stability of the blades are major...
... Are you talking about photo-thermo-mechanical, with ground-based lasers supplying the heat? If so, it seems like an extra transition we don't necessarily...
... Well, yes, that is the idea. light -> heat -> mechanical power instead of light -> electricity -> mechanical power. No extra transition, and the above...
Is anyone estimating the cost of constructing the ribbon? If it's practical to put up one base ribbon, why not add a continuous loop of ribbon? The loop can...
... It's a great conceptual start! Let's get rid of that night-time down time and tweak the engineering a bit: Since the geosynchronous anchor will be in the...
... A stirling engine might be an additional possibility ( http://en.wikipedia.org/wiki/Stirling_engine ). Regardless, a thermo-mechanical drive would be an...
... lasers ... don't ... to the ... instead ... and ... an ... 300 MW ... that. ... using ... monochromatic ... ring ... to ... high ... which ... Whether ... ...
I also think a ribbon that is used like and elevator cable would solve the power problems and give some redundancy and safety in case of cable failure, of one...
I tend to think that a continuous loop ribbon like Jim describes would need to be twice as strong as a single strand ribbion. Also, one might run into...
... Not necessarily twice as strong, but it has to be strong enough that it doesn't need to taper, since it obviously can't. ... No, the two sides are moving...
I don't think you would have a problem if it was done like an elevator-cars cable, anyway its a no win situation if you don't have a material that has proper...
... As I understand it, Turbines come close enough to ideal efficiency that other factors are more important, such as weight. There must be a good reason for...
... Unfortunately, sunlight is entirely unsuitable for beaming over long distances, due to its high divergence (~ 1 degree, I believe). You'd need a mirror 360...
... The beam divergence is the same as the suns apparent size. That is 32 Arc seconds or ~1/2 degree. The actual math is trig, However the 1/100 ratio is a...
... cells. No ... nano-tubes may change ... That is a surprise to me. Catch up? I was under the impression that turbines have specific power at least an order...
In a message dated 11/30/2006 8:28:53 PM Central Standard Time, awnd329@... writes: If anyone is ... experiments you can do ... I am interested. ...
GEddieA95@...
Dec 1, 2006 5:02 am
7555
You can beat 0.5 tons / MW of output power with an electric motor. Although the actual specs specified about 5/12ths that, on testing we kept that up for a ...
... I don't have time this morning to address all of this. But quickly. The motor of a solar electric corresponds to the transmission in a turbo mechanical...
... Check out the following link: http://www.nrel.gov/vehiclesandfuels/powerelectronics/about.html It says that advanced electric motors reach about 1 kW/kg...
NASA announced today that it is planning to set up a lunar base by 2024. If this indeed happens then it makes sense to build the first space elevator on the...
Only if it's an equatorial base. It couldn't be done at a polar moonbase, which is a site that has been mentioned frequently, as a way to assure uninterrupted...
Brad Walsh
epibeemie@...
Dec 5, 2006 3:22 pm
7561
It is possible with materials that exist today to attach a space elevator to the lunar south pole. See article about Pearson's design: ...
... I'm curious why you specified the SOUTH pole. Is there some subtle geometric reason, or is it just that we looked for water at the north pole and didn't...
... OK, The home improvement store sell a package of 1 foot square mirrors for about $8 Take one of these and aim it at a target 100 ft away. The result should...
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