Did I miss something here? Didn't the 3rd annual Space Elevator Conference not just conclude this week? And all we have to show for it is a couple of message...
... I wasn't able to attend but from the comments I've gotten from the Liftport crew who did go .... it was informative. Something about 'lack of sleep' and...
Brian Dunbar
Brian.Dunbar@...
Jul 2, 2004 1:35 am
4467
... Well, they aren't really IN the PR profession, and in my experience (PARC, Bell Labs, IBM Scientific Centers) research institutions are generally both...
... I did respond to your posts. For example messages 3974 and 2988 are included below. I have never been interested in stronger nanotubes, only a reasonable...
... They don't have to be IN the PR profession, they can hire that work out. Or at least realize that if they're going to produce a slick web site (and it is,...
Brian Dunbar
Brian.Dunbar@...
Jul 2, 2004 12:29 pm
4470
Sorry for the long-time reply. Life, as they say, has a way of getting in ones way.... ... NOX producers? Nitrous Oxides? :o) ... “Thrust Producing” seems...
RanulfC@...
Jul 2, 2004 3:51 pm
4471
Thank you for your fascinating "introduction" to this subject, Randy. I'm very interested in finding good material about atomic rockets development. Could you...
... head and put them on a Mars bound ship. Or I can lift directly from the spaceport with 5000kg of cargo on a direct course for Mars. Or you can carry a...
... I'm not sure if your just being a bit dense Bob, or you are joking. I made up the numbers to illustrate a point. Lets take yours. 12,000kg, (of which part...
RanulfC@...
Jul 3, 2004 7:14 am
4474
... Not a problem. One of my many interests :o) ... You, me and a lot of other people too :o) ... NERVA, yes. I can even give you some good sites on things...
RanulfC@...
Jul 3, 2004 7:23 am
4475
... <interesting points follow, which were read, appreciated and snipped in the interests of brevity> ... Mighty big 'if', in my opinion. Nuclear 'anything'...
Brian Dunbar
Brian.Dunbar@...
Jul 3, 2004 12:05 pm
4476
... into geosynch orbit in under 10 minutes. Just doing the math mentally, I get something like 40 g and a speed at turnover of 120 kps. That can't be right. ...
A concept that has been thought of before, but not mentioned that much in the context of the SE, is what I like to call a Skyhook: A rotating momentum transfer...
... Thanks very much for posting these notes. One of the highest "content" posts ever. When you say the best nanotube rope is still 3.5 GPa, is that the PBO...
... I think the clumsy elevator is just easier for people to understand. I think rotating tethers will be built within 15 years but don't think a space...
In a message dated 7/4/2004 12:50:37 AM Central Standard Time, windemut@... writes: 5) As mentioned before, the whole climbing thing is a real weakness. ...
GEddieA95@...
Jul 4, 2004 11:43 pm
4482
... Most people just plan on using a reusable suborbital rocket to get up to 100 km and then going to the tether. Maybe something like SpaceShipOne, only a bit...
Hi All Wear and tear and being a huge space-going fly-swatter for everything in the equatorial plane... rotating sky-hooks are also limited in the release ...
Could the centrifugal forced generated by the space elevator be usaed for energy. I would think that much centrifugal force could power millions of things....
... Energy is force times distance. So you would have to let the cable out to generate energy. But as you let it out the force would get stronger (as gravity...
... Early rotating tethers will probably be like 500 km. The space elevator is like 100 times as long. The space elevator is a far bigger target and so would...
... Have there been any "Skyhook Conferences?" I haven't been able to find any mention of any. There have been several "Tether Conferences" of various kinds,...
Hi Vince I think the biggest advantage of an SE over the rotovator/spinning tether is the fixed ground base and no need for aerospace vehicles. Half-orbital is...
... Most of the interesting tether problems would not be specific to a tether where the tip speed exactly matched the orbital speed. So there is no need for a...
... With current materials we need about the first stage of a normal 2-stage orbital rocket. But as materials get stronger the rocket can do less and less...
Bob, Putting aside the technical arguments is easy until it becomes time to actually build something... Let me repeat my most relevant points: 1) Existing...
... Safety really, a rotavator would be fascinating, but it would also collide with existing valuable LEO assets. Where did the word 'clumsy' come from? What...
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