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Messages 7016 - 7046 of 9017   Oldest  |  < Older  |  Newer >  |  Newest
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7016
Brad Edwards chose a 100m/s climber ribbon feed estimate. This results in a speed of 360km/h (about 200miles/h), not 200km/h. So 8640km a day and GEO in 4...
ill ugg
northernchronic
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Mar 1, 2006
6:27 pm
7017
... An early objection to rollers and caterpillar drives was that existing caterpillar drives are low speed, high maintenance affairs. It just occurred to me...
Brian Dunbar
economic_ref...
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Mar 1, 2006
11:53 pm
7018
A critical path in developing a space elevator is method or process that will fuse or bond CNTs to each other or to a substrate so that the load can be...
Herbert Murray
hcm1955
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Mar 3, 2006
3:37 am
7019
... Or maybe we'll be able to design climbers that exceed the speed of light and reverse time, so we'll be able to send cargo up the SE before it's even been...
Robert Munck
bobmunck
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Mar 3, 2006
5:25 am
7020
... I do not agree with this assessment. If the CNT are long enough (mm-range), no fusing is needed. The vdW forces between parallel CNT, although weak, will...
Andreas
awnd329
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Mar 3, 2006
7:25 pm
7021
... Very good assessment. I'm actually in favor of weaving them. I would use a kind of a flattened rope weave (a weave similar to that used in woven rope)....
Ray Drouillard
ka8uuu
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Mar 4, 2006
2:33 am
7022
... Why?...
Robert Munck
bobmunck
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Mar 4, 2006
3:05 am
7023
... Essentially, because there is no adhesive involved at all. The strength reduction in strength caused by moving the fibers 2 degrees from vertical (3.5%)...
Ray Drouillard
ka8uuu
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Mar 4, 2006
4:28 am
7024
... You are _so_ in trouble for giving away the Big Secret. David's already built the FTLL (FTL Lifter) - it's in his garage next to the Delorean. -- Brian...
Brian Dunbar
economic_ref...
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Mar 4, 2006
1:29 pm
7025
... ballistic. ... Ballistic electron transport is a microscopic phenomenon. I don't think anyone seriously thinks it can be made to work macroscopically. Even...
Andreas
awnd329
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Mar 5, 2006
6:04 am
7026
... *** from a previous post of mine *** [...] Also, one conduction mode is for the electrons to be ballistically sent down the center. Not technically a...
Ray Drouillard
ka8uuu
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Mar 5, 2006
4:48 pm
7027
... sent ... Yes. This makes CNTs Field Effect Transistors. Useful for making thin TV screens and maybe CNT paper someday. How does this apply to the SE?...
northernchronic
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Mar 5, 2006
9:57 pm
7028
... fiber ... will ... NIST thinks so: http://www.nist.gov/public_affairs/releases/n02-17.htm Also: ...
Herbert Murray
hcm1955
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Mar 6, 2006
12:24 am
7030
... Room temp superconductor nanotube may be possible: http://superconductors.org/roomnano.htm...
Herbert Murray
hcm1955
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Mar 6, 2006
3:33 pm
7031
... process ... that ... other ... strength. ... If ... (or ... the ... perfect ... they ... not, ... ballistic. ... superconductors -- ... cm. ... But the...
Herbert Murray
hcm1955
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Mar 6, 2006
3:43 pm
7032
Have one week to submit a 3-5 page introduction on the topic. Have some crumbs to start with. Please contact me if interested. abecker1 at gmail.com...
abexman2000
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Mar 7, 2006
2:36 am
7033
I am working on a climber for the Spaceward climber competition. It is a thermal engine. I am looking for alternatives to the traditional search light for...
blturner3
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Mar 8, 2006
2:49 pm
7034
... Yes, but you need a largeish parabolic dish to aim it. The wavelength of microwaves is ~12cm so the dish has to be large relative to that otherwise the...
Ian Woollard
wolfekeeper
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Mar 8, 2006
3:00 pm
7035
The power that needs to be delivered to the climber is in the 1 to 5 Kwatt range. If your where to use a search light then you are talking about a 10Kw light....
Herbert Murray
hcm1955
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Mar 8, 2006
3:47 pm
7036
The largish parabolic dish is the show-stopper. The biggest cost of visible searchlights is the parabolic reflector. If a microwave based solution has the same...
blturner3
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Mar 8, 2006
5:42 pm
7037
You should be aware there are other teams on this list too :p I'm curious what people hafto say on this matter as well though, but I would rather not share my...
kyros
terenot
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Mar 8, 2006
6:06 pm
7038
... It's not really the same thing though. The microwave dish may be bigger, but its probably much cheaper. Because of the long wavelength you don't need to...
Ian Woollard
wolfekeeper
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Mar 8, 2006
6:26 pm
7039
The search light can be rented. For the required set of PVs with 20% or better eff will cost you about 10K(USD), as you stated the microwave option is easier...
Herbert Murray
hcm1955
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Mar 8, 2006
10:43 pm
7040
With a 10 meter chickenwire dish, and a 10 m rectenna, you might be able to get decent power transfer up to about a 800 m or so, according to the old rule of...
Andreas
awnd329
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Mar 8, 2006
10:45 pm
7041
I believe the old style 3 Meter SAT-TV dish might do the trick. You should email Ben (@elevator2010) to see if that is acceptable in terms of footprint. I...
Herbert Murray
hcm1955
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Mar 8, 2006
11:01 pm
7042
... thermal ... power ... microwaves ... list. Probably the wrong search parameters, look up 'Microwave Thermal Thruster Concept' that should get you in the...
RanulfC@...
Send Email
Mar 8, 2006
11:13 pm
7043
... Electric heater? (Might well be the way to go in fact, the electric heater gives high temperatures, whereas the microwave power is likely to be diffuse; ...
Ian Woollard
wolfekeeper
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Mar 8, 2006
11:32 pm
7044
It might be easier to build a maser which focuses energy better than a Magneton. See plans for 1 to 5 KW maser http://www.plans-kits.com/kits.html Also using...
Herbert Murray
hcm1955
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Mar 9, 2006
1:50 pm
7045
Thanks for all the input. As most of you figured out it's all about cost vs power. I can make some estimates from the information you have provided. As we get...
blturner3
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Mar 9, 2006
2:10 pm
7046
... Ok, one last idea to put in your pipe: With the microwave idea- one other approach you could try is rather than building a wacky-shaped parabolic, you...
Ian Woollard
wolfekeeper
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Mar 9, 2006
3:31 pm
Messages 7016 - 7046 of 9017   Oldest  |  < Older  |  Newer >  |  Newest
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