Yet another weird SF fan


I'm a mathematician, a libertarian, and a science-fiction fan. Common sense? What's that?

Go to first entry


 

Archives

<< current
 
E-mail address:
jhertzli AT ix DOT netcom DOT com


My Earthlink/Netcom Site

My Tweets

My other blogs
Small Sample Watch
XBM Graphics


The Former Four Horsemen of the Ablogalypse:
Someone who used to be sane (formerly War)
Someone who used to be serious (formerly Plague)
Rally 'round the President (formerly Famine)
Dr. Yes (formerly Death)

Interesting weblogs:
Back Off Government!
Bad Science
Blogblivion
Boing Boing
Debunkers Discussion Forum
Deep Space Bombardment
Depleted Cranium
Dr. Boli’s Celebrated Magazine.
EconLog
Foreign Dispatches
Good Math, Bad Math
Greenie Watch
The Hand Of Munger
Howard Lovy's NanoBot
Hyscience
Liberty's Torch
The Long View
My sister's blog
Neo Warmonger
Next Big Future
Out of Step Jew
Overcoming Bias
The Passing Parade
Peter Watts Newscrawl
Physics Geek
Pictures of Math
Poor Medical Student
Prolifeguy's take
The Raving Theist
RealityCarnival
Respectful Insolence
Sedenion
Seriously Science
Shtetl-Optimized
Slate Star Codex
The Speculist
The Technoptimist
TJIC
Tools of Renewal
XBM Graphics
Zoe Brain

Other interesting web sites:
Aspies For Freedom
Crank Dot Net
Day By Day
Dihydrogen Monoxide - DHMO Homepage
Fourmilab
Jewish Pro-Life Foundation
Libertarians for Life
The Mad Revisionist
Piled Higher and Deeper
Science, Pseudoscience, and Irrationalism
Sustainability of Human Progress


























Yet another weird SF fan
 

Tuesday, September 06, 2016

Nuclear-Powered Piston Engines, Some Figures

A few years ago, I came up with a plan for getting power from controlled nuclear fusion: nuclear-powered piston engines:

Imagine a piston engine in which the cylinders are the size of the Vehicle Assembly Building and the spark plugs are replaced by nuclear bombs.
Let's see… A megaton is \(4.184\times10^{15}~\text{J}\). A typical pressure in a piston engine is about 1 MPa or \(10^6~\text{J}/\text{m}^3\). In other words, you would need a volume of \(4.184\times10^9~\text{m}^3\). That would be a cube a mile on a side.

The Vehicle-Assembly Building isn't big enough. Even the Boeing Everett Factory isn't big enough. Even a building the area of the largest Target import warehouse and the height of the Burj Khalifa misses by a factor of 30. Bummer.

This isn't a matter of “Wait for next year!” It's a matter of “Wait for next century!”

0 Comments:

Post a Comment

<< Home

 
Profiles
My Blogger Profile
eXTReMe Tracker X-treme Tracker

Site Meter
The Atom Feed This page is powered by Blogger.