... orbit. ... could cost less than send goods to the space (orbit). ... earth. ... As in my last post, where do the re-entry bodies come from? If launched...
... The mentioned 1-2 km. size is the diameter of the aerostat. He said one mile, actually. het ... Could the CNTs be woven into a fabric and made airtight?...
... large ... So, a single 1 km diamater balloon is going to lift up a 1-2 thousand km track made of magnets? I would like to see that calculation. ... I'd bet...
... distance, ... and ... I remember a caller on The Space Show suggesting a circular mass accelerator but he hadn't figured out several problems such as ...
... Interesting idea. But, then, the reason the linear accelerator needs to be so long is the g-force limit. Making it circular does not solve that at all. ...
CNTS may have a strength of 300 GPA. If you look at Blaise Gassend paper on Exponential Tethers we may only need about 50 GPA. CNT/Nanotech research is still...
This has been discussed extensivly in the space elevator world. If you can find Brad Edward's reply to it, it's well worth reading. Space.com is about 2 months...
One problem with Pugno's study is that it assumes a requirement for individual nanotubes to be very long. However, imagine for a moment that a short nanotube...
... CNTs may have a strength of 30 GPA. Blaise's paper, although excellent, really has no bearing on that. If you look at the paper, you will see that for the...
I have copied the conclusion from Blaise's paper. I will let everyone come to thier own opinion. Blaise's conclusion follows: "In this paper I have introduced...
... I recommend a look at figure 4 of Blaise's paper, which shows that uniform stress (conventional) SEs can be built faster than exponential tethers at...
I am not sure if we are on the same sheet of music. The issue is not how fast a SE can be built, but IF a SE can be built using a weaker ribbon. An exponential...
... If we are talking IF, we need to look at the SE that can work with the lowest possible strength, and that is the uniform-stress SE. The one where climbers...
... If the 'circular' accelerator can be used and re-used for the same launch, the 'shipment capsule' could be accelerated slowly over many 'round trips' and...
... The mentioned 1-2 km. size is the diameter of the aerostat. He said one mile, actually. ... --I also would like to see it. If you read the earlier posting,...
... You're still running into G-force limits; more accurately, centripetal acceleration limits. The rate of change of the speed of the capsule within the ...
... In a circular mass driver, most of the repulsing magnets will be along the outer wall facing in and not on the floor. All that push towards the center and...
... Thanks for the comments, Ed. How about this?: Lets assume we want a 3 meter diameter capsule. We make a circular accelerator with a radius of 10-20...
Harvey, ... If you lower the pressure in the cylinder there is not enough air in the bottom of the cylinder to hold up the air at the top against gravity....
... Thanks Graham, I don't see this as a 'show stopper'. I don't care if the exit port is a 10 cm. plate steel cover that is counterbalanced and hinged to be...
What about running the linear accelerator part up the side of a mountain and taking over with balloons once it reaches the summit? Just a thought, Duncan ... ...
... I have read at least one science fiction book or short story with Pike's peak as a sloping take-off ramp for rockets, so I think a mountain would be...
For small payloads you could hang a gun or coilgun based system from an airship Gun based http://www.columbiad.ca/industrial/index.html Coil Gun Based: ...
For a propulsion system why not use an electrical power steam rocket? This would require a water feed, electrical lines to be build into the tether. But a...
I see announcements that the space elevator challenge will be held at NASA Ames on August 4th http://www.spaceref.com/news/viewpr.html?pid=18314, and that it...
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