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Messages 5648 - 5677 of 8988   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
5648
... Right. It's a simple matter of math, with the critical measure being the Specific Power (power to mass ratio) as I pointed out in "the se SE" here. I'm...
Kerry
kerry_lien
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Apr 1, 2005
11:44 am
5649
... Um, that was *not* your point. Your point was 4 times the surface area/mass for the PV panels, without any increase in the *effective* collecting area of...
millenial70
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Apr 2, 2005
1:09 am
5650
Okay, here's my simulation of the times taken by a solar powered climber versus a laser powered climber. This indicates 23.75 percent more time needed for the...
millenial70
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Apr 2, 2005
3:06 am
5651
I just found a flaw myself: the maximum speed for the climber be 55.55 (in m/s), and not 200.0 (in km/hr). This leads to a more puzzling output. The time...
millenial70
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Apr 2, 2005
3:14 am
5652
... 220 hours is 9 days, 4 hours. I don't know what "0/18" means. I couldn't see where in your code you computed centripetal acceleration on the climber....
Robert Munck
bobmunck
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Apr 2, 2005
5:01 am
5653
... So you have 48 or so panels fastened to the climber by a pivot at one corner and supported by fishing line? How does the electricity get to the climber? I...
Robert Munck
bobmunck
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Apr 2, 2005
6:45 am
5654
THE CONCEPTUAL DIAGRAM: http://www.isr.us/Downloads/niac_pdf/pdfimages/fig4_1.gif THE IDEAS: Well at the end of day some sort of Laser beaming at the optimum ...
Karl X
asilicondude
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Apr 3, 2005
3:36 am
5655
... Typo. It should say: 9.18 days. ... Correction made in the code, however it has almost no effect on the time. It is now 219.2 hours for the laser-powered...
millenial70
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Apr 3, 2005
4:09 pm
5656
... No. Sorry, my description probably wasn't the best, or I might be misunderstanding what you're asking. For a 2.4 MW load I would have 4 panels connected to...
Kerry
kerry_lien
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Apr 4, 2005
10:29 am
5657
Hey, thanks. When I did my first guesstimate I just assumed that they *could* go at 200 kph all the way on the power quoted, instead of checking. I'll stuff...
Kerry
kerry_lien
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Apr 4, 2005
10:41 am
5658
... Probably, but the point of the exercise was to find the 'optimum' solution with off-the-shelf, (or as near as possible) tech. Compared, the non-tracking ...
RanulfC@...
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Apr 4, 2005
10:40 pm
5659
bp164 wrote: (Automated assembly) ... Actually it doesn't IF you make the arrays something easy for a teleoperated or autonmous robot to handle :o) ... ...
RanulfC@...
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Apr 4, 2005
11:14 pm
5660
Brian; I meant to mention this a bit earlier but forgot or spaced out. ... I'd check on that... I believe that American Antigravity has "Lifter" trade marked...
RanulfC@...
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Apr 5, 2005
2:04 am
5661
... I'd understood it that the 'standard' laser baselined in the Phase II report could hit 1MW with a full complement of 'exciters' in it. But that the ...
RanulfC@...
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Apr 5, 2005
3:11 am
5662
... Thanks for pointing out the teleoperated possibility. I can't imagine an autonomous robot doing it. ... I understand that. The PV array is going to need...
millenial70
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Apr 5, 2005
4:28 pm
5663
Just an off-the-top-of-my-head $0.02NZ idea: For a laser powered climber, the entire solar array will be positioned behind the climber and literally dragged...
Gary Mu1der
garyjmulder
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Apr 5, 2005
5:08 pm
5664
I had the program do simulations for how long the travel times would be for a laser-powered climber, depeding on how fast the maximum climbing speed for the...
millenial70
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Apr 5, 2005
5:13 pm
5665
http://www.msnbc.msn.com/id/7280483/ Very nice!...
jrabprof
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Apr 5, 2005
5:44 pm
5666
... Agreed. There hasn't been anywhere nearly enough analysis done in this kind of thing (or at least not enough that was published). For instance, I'd expect...
Robert Munck
bobmunck
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Apr 5, 2005
5:55 pm
5667
I've seen 360km/hr mentioned as the top climbing speed in a few sources because of ribbon feed issues. I assume this is accurate. The NIAC reports average the...
northernchronic
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Apr 5, 2005
8:48 pm
5668
... There's a bit of confusion here; the lasers are back on the ground, where they'll have no trouble getting rid of waste heat. The climber will definitely...
Robert Munck
bobmunck
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Apr 5, 2005
9:16 pm
5669
... But also consider the fact that the ribbon is very, very thin! It doesn't take much heat to warm a tortilla-- only a few seconds on the top of a hot...
Abraham Fowler
z0p1l0t3
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Apr 5, 2005
10:00 pm
5670
NASA About Freaking time! Although the prize has to be around $1,000,000 to attract serious commercial competitors. I bet you Dr. Brad Edwards firm...
Karl X
asilicondude
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Apr 5, 2005
11:38 pm
5671
... Yep, this is a very good idea for a free way to conduct waste heat. Unfortunately, of the the 1MW of low temp. waste heat power-train and controls systems...
northernchronic
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Apr 6, 2005
2:31 am
5672
... Question: I've seen the number of 200 km/hr used as ... From Edwards, p. 159: "At this (the first ribbon) level of ribbon development, we are using ...
karikarhi
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Apr 6, 2005
3:49 am
5673
I had the program simulate the travel times until another climber can be launched, when the first climber reaches an altitude where it is at 0.1 g force. This...
millenial70
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Apr 6, 2005
4:48 pm
5674
... That's not an optimal solution, unless there's some reason that each individual payload has to be as large as possible. If, as is likely, the cargo is...
Robert Munck
bobmunck
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Apr 6, 2005
5:38 pm
5675
... Seems MOST folks have a hard time imagining a 'autonomous' robot doing anything at all :o) Really that's why you'd want to make the panels pretty 'simple'...
RanulfC@...
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Apr 6, 2005
11:10 pm
5676
... If you go to the NIAC site you can download a report on Modular Lasers from Dr. Jordin Kare. RAndy [Non-text portions of this message have been removed]...
RanulfC@...
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Apr 6, 2005
11:13 pm
5677
... Lasers from ... It's a good report, the 100MW power requirements are in the same ballpark as a climber's, and the budget estimate is useful. I guess I was...
northernchronic
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Apr 7, 2005
5:42 am
Messages 5648 - 5677 of 8988   Oldest  |  < Older  |  Newer >  |  Newest
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