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Comment: Re:5 minute charge (Score 1) 395

6,000 amps at 120VDC could be generated from a 12,5kV feeder found in a typical commercial setting; so, no, you don't really need a "direct connection to a power plant". I was exaggerating a bit. I would expect the utility to pitch a fit if you said you were going to pull that much power... They might have a choice words about your 3/4 megawatt load that switches in for 5 minutes at a time. Words like, "No"

Comment: Re:US Military Uses Oil Like a Smaller Country (Score 1) 228

by confused one (#48146071) Attached to: Pentagon Unveils Plan For Military's Response To Climate Change
Fair enough, nearby supernova == bad. Nuclear is often classed as a renewable because so little of the U-235 is used (1% or less in a typical commercial power reactor) -- the fuel can be recycled, reprocessed and re-used. Then there are breeder cycles....

Comment: Re:US Military Uses Oil Like a Smaller Country (Score 2) 228

by confused one (#48137135) Attached to: Pentagon Unveils Plan For Military's Response To Climate Change
we're building more aircraft carriers because they have to be replaced. Enterprise was just retired after 50 years and is being decommissioned. The Kitty Hawk class are all retired now. Nimitz is 42 years old -- yes, its keel was laid in 1968 and it entered service in 1972. It takes 4-5 years to build one of these floating cities. There may be 10 of them (not counting Enterprise and Ford); but, one is usually in the yard being refit (15 year overhaul cycle -- Lincoln is currently in the yard) and there are several in port at any time. It takes 10-12 of them to support Naval operations worldwide. The rest of the world has basically stopped using aircraft carriers, because they're expensive. The U.S. uses them for force projection and as a platform for operations of all types, including disaster relief. Oh, and aircraft carriers run on renewable energy -- they have a pair of nuclear reactors in the hull.

Comment: the end of hope for male geeks everywhere (Score 1) 120

by confused one (#48062067) Attached to: First Birth From Human Womb Transplant
This, with artificial implantation and genetic engineering, brings us one step closer to asexual reproduction. It won't be long before science is able to pair DNA from two women to create a new offspring. Artificial wombs will follow. Soon women won't need men any more. Then the male geeks will go from having had a limited chance, to having zero hope of ever meeting a woman and having sex.

Comment: Re:Just Go Nuclear and Get There Quick (Score 1) 236

by confused one (#48059907) Attached to: NASA Eyes Crew Deep Sleep Option For Mars Mission
I know VASIMR isn't a nuclear rocket (although at some field densities with the right fuels and energy input, the math shows there is the potential for limited amounts of fusion). VASIMR engines of that size will require a nuclear plant to power them. -- and I'm not talking about RTG's here. Frankly, this is territory we've not explored really, beyond a few early ground tests and small scale (10kW) fission reactors launched in the '60's and '70's (SNAP, RORSATs, Topaz) which mostly used thermoelectric conversion. That's not going to work for a 10MWe plant,

Comment: Re:Just Go Nuclear and Get There Quick (Score 1) 236

by confused one (#48059827) Attached to: NASA Eyes Crew Deep Sleep Option For Mars Mission
I was politely trying to say that it was written by the company Ad Astra Rocket Company and they have an interest in promoting VASIMR. Yes the math is straight forward and I believe the technology works. However, I have seen (and worked for) companies that will write white papers that put everything in the most favorable light, even if the result is optimistic, and frankly not realistic. Overstating efficiencies, for example, by using the best case numbers observed in the R&D lab, and not the real-world numbers obtained from field trials. So, yes, such "groups" really exist.

Kleeneness is next to Godelness.

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