polywell reactor for booster rocket applications?

Discuss how polywell fusion works; share theoretical questions and answers.

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polywell reactor for booster rocket applications?

Postby ohiovr » Fri Mar 06, 2009 7:31 pm

Hello Polywell thinkers,

I'm curious about the power scalability of the polywell. I've read that the power output scales to the 7th power of its size or something to that effect. And that a gigawatt reactor could take up as little space as 10 meters across. I don't really understand the math to find this out on my own. Where do we start with? How does a detection of 9 neutrons with such and such size reactor mean that one a few times bigger can output the same energy as a single commercial fission reactor? Could I have and equation please :D

I've been following the focus fusion crowd too and their claims are not nearly as profound saying their hopes are for reactors the size of garages that produce 10 or 20 megawatts of electricity. That's fantastic if true even still. But gigawatts and beyond well that could be useful for rocketry. Maybe even electric booster rockets. But seriously just one or two gigawatts isn't even close to the power output of one saturn V F-1 booster engine which:

"Through 10 Fuel suction lines, 1350 gallons (about 4ton) of RP-1 are supplied to the F1 engine per 1 second in flight"

[url - http://apollomaniacs.web.infoseek.co.jp ... v_s1ce.htm

1350 gallons of kerosene per second! Each gallon of kerosene contains about 142,200,000 joules of energy and each second a single f-1 engine gobbles down 53.33 megawatt hours worth of chemical energy.

If Bussard was right, how big of a reactor would be needed to compete with that kind of energy output? Are electric booster rockets pure unadulterated fantasy that could never ever happen? - /url]

ohiovr
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Postby ohiovr » Fri Mar 06, 2009 7:32 pm

aahhh where did my message go????

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Re: polywell reactor for booster rocket applications?

Postby Betruger » Sat Mar 07, 2009 1:13 am

That's funny, I tried to quote your first post and the text showed up in the text editor, but once posted it just disappears. Let's try it again without the quote tags.

<<

Hello Polywell thinkers,

I'm curious about the power scalability of the polywell. I've read that the power output scales to the 7th power of its size or something to that effect. And that a gigawatt reactor could take up as little space as 10 meters across. I don't really understand the math to find this out on my own. Where do we start with? How does a detection of 9 neutrons with such and such size reactor mean that one a few times bigger can output the same energy as a single commercial fission reactor? Could I have and equation please :D

I've been following the focus fusion crowd too and their claims are not nearly as profound saying their hopes are for reactors the size of garages that produce 10 or 20 megawatts of electricity. That's fantastic if true even still. But gigawatts and beyond well that could be useful for rocketry. Maybe even electric booster rockets. But seriously just one or two gigawatts isn't even close to the power output of one saturn V F-1 booster engine which:

"Through 10 Fuel suction lines, 1350 gallons (about 4ton) of RP-1 are supplied to the F1 engine per 1 second in flight"



1350 gallons of kerosene per second! Each gallon of kerosene contains about 142,200,000 joules of energy and each second a single f-1 engine gobbles down 53.33 megawatt hours worth of chemical energy.

If Bussard was right, how big of a reactor would be needed to compete with that kind of energy output? Are electric booster rockets pure unadulterated fantasy that could never ever happen?


>>

edit - You had a misplaced URL tag, that's the only oddity I found.

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Postby MSimon » Sat Mar 07, 2009 4:02 am


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Postby ohiovr » Sat Mar 07, 2009 4:44 am


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Nuclear Bomber studies...

Postby Nik » Tue Mar 17, 2009 3:07 am


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Postby djolds1 » Tue Mar 17, 2009 5:53 am

Last edited by djolds1 on Tue Mar 17, 2009 12:51 pm, edited 1 time in total.
Vae Victis

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Postby Skipjack » Tue Mar 17, 2009 6:59 pm



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