Search found 155 matches
- Tue Aug 12, 2008 1:39 am
- Forum: General
- Topic: Vasmir Engine To Be Tested In Space
- Replies: 3
- Views: 3065
Re: Vasmir Engine To Be Tested In Space
* http://www.dailytech.com/Commercially+Developed+Plasma+Engine+Soon+To+Be+Tested+In+Space/article12612.htm * The new rocket is named Variable Specific Impulse Magnetoplasma Rocket (VASIMR). A traditional rocket can produce a specific impulse of around 450 seconds, or in other words 1 pound of thru...
- Thu Aug 07, 2008 10:32 pm
- Forum: General
- Topic: Propulsion development
- Replies: 27
- Views: 15288
Simon, Sure, based on the raw power reqs that makes sense. But I'm doubtful that can actually happen, given a Polywell's complexity, cooling reqs, and the need for a 5-10MW input to run the reactor. My guess is this only goes on something that already has one or more diesel/fission engines. Well, a...
- Wed Aug 06, 2008 9:32 pm
- Forum: News
- Topic: New Energy Reports the Latest
- Replies: 59
- Views: 37809
Yes, I do agree also. Secrecy can at best give only a short term advantage. Once it's known to work, it can be built from scratch by any number of states/organizations. Secrecy would buy the navy a lot more time than it will buy EEStor, I think though. Consider that if a BFR were built inside an ai...
- Wed Aug 06, 2008 9:28 pm
- Forum: Implications
- Topic: So... what if it didn't work?
- Replies: 29
- Views: 23053
Similarly I think requesting $100 million dollars when you still don't really know what's going on inside your little machine would be a big mistake. It would be setting the project up for a fall. 100 million dollars may not be much for solving the world's energy problems but it is not good value f...
- Sat Aug 02, 2008 1:55 am
- Forum: News
- Topic: More EEStor news
- Replies: 40
- Views: 28240
Unfortunately, it reminds me entirely too much of the kinds of press releases Gary Hudson had Rotary Rocket putting out for most of the late 90's..."Processes certified! Progress is being made! First increment completed!" (unstated was that it was the only increment they could afford given that they...
- Tue Jul 22, 2008 4:41 am
- Forum: Theory
- Topic: The problem with ion convergence
- Replies: 126
- Views: 63260
you're using prob(fus) =i*n_0*sigma*r_c; geometry independent. Implies the central 10% of the device (0.1 m?) is an undifferentiated, isotropic thermal distribution. sigma is geometry independent, per Art's equation above. No, I was assuming all the ions have 1-D motion and they will only interact ...
- Sun Jul 20, 2008 3:48 am
- Forum: Theory
- Topic: The problem with ion convergence
- Replies: 126
- Views: 63260
There is another way to look at this calculation. It is the number of deflections that occur driving ions off center due to coulomb interactions. In that sense it's really good - on any one pass there are very few deflections and ions should stay radial for a good number of passes. The cross sectio...
- Sat Jun 21, 2008 4:24 am
- Forum: General
- Topic: Ya Gotta Be A Little Bit Crazy
- Replies: 11
- Views: 6060
Re: it's not that cut and dried
My snarky comment raised a question in my mind: The Farnsworth fusor can't achieve net power output b/c the charged grid has a transparency of better than 90%, but not 100%. sort of. Fusors can't achieve net power for reasons that may be simply, but only imprecisely boiled down to, "excess loss of ...
- Sat Jun 14, 2008 3:30 am
- Forum: News
- Topic: Another one from Alan Boyle
- Replies: 52
- Views: 34438
Maybe they could get Todd Rider or Richard Hull on the peer review, when the toughest skeptics are convinced then you can pretty much guarantee it works. The toughest skeptics are usually those who have opinions they're unwilling to change no matter what the evidence is. While Richard Hull strikes ...
- Sat Jun 14, 2008 3:22 am
- Forum: News
- Topic: Another one from Alan Boyle
- Replies: 52
- Views: 34438
Re: rnebel answers Art Carlson
Art Carlson posted a comment to Alan Boyle's article (June 13, 1:17 PM). As usual it was hard critic. The surprise is that this time some rnebel (our rnebel?) posted a very interesting and informative answer to Art (June 13, 2008 6:17 PM). I dont know if it's right to copy Art's critic and rnebel's...
- Tue Jun 10, 2008 1:44 am
- Forum: Theory
- Topic: magrid configuration brainstorming
- Replies: 632
- Views: 278238
Ok, Tombo I think I see a potential problem with your coil formation, most visible to me on http://i299.photobucket.com/albums/mm317/tombo1234/PolywellC-8-hedron4CircuitA-2.jpg It's not a problem "inside" the device so much as realizing that a recirculating machine means that both "inside" and outsi...
- Sun Jun 08, 2008 4:52 pm
- Forum: Theory
- Topic: magrid configuration brainstorming
- Replies: 632
- Views: 278238
About the rf plugging pdf: the coils are all just encircling the central axis. There is probably a coil on either side of the line cusp in the diagram, so that both coils have their same poles (ie, N to N or S to S) facing each other. There's no line cusp (as far as I can tell) on the polywell; tha...
- Sat Jun 07, 2008 8:47 pm
- Forum: Theory
- Topic: magrid configuration brainstorming
- Replies: 632
- Views: 278238
electron plasma really just superimposes it's own field over the field from the coils, Yes, that looks good. But, I’m still not sure how the plasma ball assumes a spherical shape without peaks at the coil centers & corners. True, there are peaks at the coil centers & corners. To see this in action ...
- Sat May 31, 2008 5:09 pm
- Forum: Theory
- Topic: magrid configuration brainstorming
- Replies: 632
- Views: 278238
Hello Simon, I was under the (perhaps mistaken) impression that the WB series had all their magnets' North face pointing inwards; and that the return pole was a virtual magnetic face through the holes where three circles "meet". Certainly Indrek's visualisations imply this. Please feel free to corr...
- Fri May 30, 2008 8:02 pm
- Forum: Theory
- Topic: magrid configuration brainstorming
- Replies: 632
- Views: 278238
<snip> A similar field configuration would result if the 6 cube coils were replaced with 8 coils at the corners where the virtual coils are. The original coils would now be the virtual coils. Like this: http://i299.photobucket.com/albums/mm317/tombo1234/CornerViewPolywellCubeCoilsPlusE-1.jpg Or fin...