Search found 371 matches

by WizWom
Fri Jun 11, 2010 9:30 pm
Forum: Design
Topic: Using atmosphere as propellant
Replies: 151
Views: 104844

Stoney3K, the rest of us are working in the realm of "Real, proven" - not "might possibly be, if we wish hard." If you have a massless thruster, then, of course you can go to the moon on a whim and never have to play with reaction mass. Just like if I have a Unicorn to ride, I never have to worry ab...
by WizWom
Fri Jun 11, 2010 7:12 pm
Forum: Design
Topic: Using atmosphere as propellant
Replies: 151
Views: 104844

One concept has been using water injection into an heated aristream in atmosphere and a heat-based rocket engine for added thrust outside atmosphere. Since high speed electric fans are light and effective, I put my vote on this concept as reaching SSTO first. We already have very efficient gas turb...
by WizWom
Fri Jun 11, 2010 6:19 pm
Forum: Design
Topic: Using atmosphere as propellant
Replies: 151
Views: 104844

Any system using an atmospheric engine has to balance the usefulness of the airbreather against the mass of it. Is 3-5 kps worth the added mass? One concept has been using water injection into an heated aristream in atmosphere and a heat-based rocket engine for added thrust outside atmosphere. Since...
by WizWom
Wed Jun 09, 2010 5:27 am
Forum: Theory
Topic: Another (simple) FAQ - DONE
Replies: 79
Views: 12094

Bussard studied the ionization issue extensively (it was one reason he built PZLx-1). If you have a paper that suggests Bussard's number is way off, I'd be curious, but it seems safe to ignore this in the FAQ. It seems unlikely neutrals can survive more than usecs. You really just don't seem to und...
by WizWom
Fri Jun 04, 2010 8:02 pm
Forum: General
Topic: How to solve the first wall problem. :} use Boron.
Replies: 4
Views: 2532

Wow, that's a real example of hillbilly construction if I ever saw one.
by WizWom
Fri Jun 04, 2010 6:19 pm
Forum: Theory
Topic: Help with Describing a Graphic Please
Replies: 17
Views: 3557

I know it was 10MW for a reactor, I hadn't seen that # for WB-6. Let's see, if WB-6 was around 100KV, that would make it... 100A (100A x 100,000V = 10,000,000W)? I guess that's possible. http://www.emc2fusion.org/QuikHstryOfPolyPgm0407.pdf WB-6 was driven at 12.5K V and2000A. So it was a very short...
by WizWom
Thu Jun 03, 2010 4:32 am
Forum: Theory
Topic: Initial Polywell Simulation
Replies: 18
Views: 6241

What eletropotential and magnetic field did you use?

Did your simulation software account for recirculation?
by WizWom
Wed Jun 02, 2010 5:41 pm
Forum: Theory
Topic: A Funel analogy instead of a Wiffleball analogy
Replies: 6
Views: 1811

I like this analogy, but have a question. Since the fuel ions are charged, near and being impinged on by the magnetic field, they are also spiraling in the direction of the flux. The marble in the funnel is spiraling towards the exit, but there are other ways it can spin as it heads that direction ...
by WizWom
Wed Jun 02, 2010 3:03 am
Forum: General
Topic: Electoral Map
Replies: 4
Views: 1355

The polls are bull, this far out.

What will decide it is the economic situation in the final month before elections.
by WizWom
Wed Jun 02, 2010 2:59 am
Forum: General
Topic: Taqiya
Replies: 2
Views: 586

I notice the scrap metal didn't seem to make it :-)
by WizWom
Wed Jun 02, 2010 2:49 am
Forum: Implications
Topic: QED drives vs. Orion drives?
Replies: 6
Views: 10444

http://www.askmar.com/Fusion_files/The%20QED%20Engine.pdf Is the paper properly about the suggested engines. It suggests a thermal drive for raw thrust/high mass ratio. High ISP is accomplished by using ion drives such as in VASIMR. He's honestly suggesting Isp of 200,000 to 1,000,000 for his vacuum...
by WizWom
Tue Jun 01, 2010 4:04 am
Forum: General
Topic: I wasn't going to post anything politcal, but
Replies: 2
Views: 624

I loved Savage's response. classic.
by WizWom
Tue Jun 01, 2010 3:50 am
Forum: Theory
Topic: Another (simple) FAQ - DONE
Replies: 79
Views: 12094

So, essentially you are saying somehow these ions are not fully ionizing, despite having so much energy that they are way above the full ionization temperature?

Dr. Bussard though differently, assuming that the ions would be fully ionized within 1 cm or so (per his paper on scale-up).
by WizWom
Mon May 31, 2010 3:02 pm
Forum: News
Topic: Novel battery tech.
Replies: 23
Views: 6192

interesting, can they make this battery fit in a car? If so, how long can a car operate with this battery before it has to recharge? How long does it take to fully recharge? I'm more interested in that actually. Any battery or capacitor technology is fully scalable - and scaling up is easier than d...
by WizWom
Mon May 31, 2010 2:34 pm
Forum: Design
Topic: Design FAQ issues - discussion thread
Replies: 11
Views: 4769

You've confused your magnetic and electrical fields. Magnetic field constrain the electrons. The magrid makes magnetic fields. The polywell consists of .... Within the MaGrid, magnetic fields confine most of the electrons and those that escape are retained by the electric field Recirculate: To exit ...