My Assistant
The Low Road to Alpha Centauri |
| Guest_DonPMitchell_* |
May 25 2006, 05:03 AM
Post
#1
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Guests |
OK, I'm in that unpopular camp that believes that the Breakthrough Propulsion Program should never be funded again -- we should not spend any money on Heim Theory, gyroscopic antigravity, space elevators, antimater engines, Bussard ramjets, black hole engines, UFO research, and zero-point energy. I have a radical alternative proposal.
Instead of using Wired Magazine physics to get to the stars, I'd like to use The Feynman Lectures physics to get to the stars. I propose building a craft powered by atomic fission. The engine would be a high-current linear ion accelerator, consisting of a superconducting niobium cavity resonator like this one, to get a nice healthy relativistic exhaust velocity. [attachment=5855:attachment] [attachment=5854:attachment] Next, we crack open a good book, like Taylor & Wheeler's Spacetime Physics, and figure out how long it would take to get a real spaceship to Alpha Centuri. What is the relativistic form to Tsiolkovsky's Rocket Equation? (OK, T&W does that for you) How much Plutonium would it have to carry? How much ionizable reaction mass? I guarentee you, this hypothetical ship will get to the nearest star long before anyone invents a warp drive. Maybe I should ask NASA for $1.6 million, to develop this idea? |
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DonPMitchell The Low Road to Alpha Centauri May 25 2006, 05:03 AM
dilo Interesting, Don. I do not recall similar idea on ... May 25 2006, 05:29 AM
deglr6328 ....of course you know that linacs and synchrotron... May 25 2006, 05:41 AM
DonPMitchell QUOTE (deglr6328 @ May 24 2006, 10:41 PM)... May 25 2006, 06:46 AM
dilo QUOTE (DonPMitchell @ May 25 2006, 06:46 ... May 25 2006, 05:53 PM
Richard Trigaux QUOTE (DonPMitchell @ May 25 2006, 05:03 ... May 25 2006, 08:06 AM
ugordan QUOTE (Richard Trigaux @ May 25 2006, 09... May 25 2006, 09:21 AM
deglr6328 I guess possibly a superconducting linac (any curv... May 25 2006, 08:27 AM
Richard Trigaux QUOTE (deglr6328 @ May 25 2006, 08:27 AM)... May 25 2006, 10:48 AM
Stephen QUOTE (DonPMitchell @ May 25 2006, 05:03 ... May 25 2006, 10:35 AM
Richard Trigaux QUOTE (Stephen @ May 25 2006, 10:35 AM) ... May 25 2006, 11:05 AM
Bob Shaw Don:
Never mind the stars - think what a decent p... May 25 2006, 12:47 PM
algorimancer There's an easy and high efficiency option tha... May 25 2006, 01:20 PM
Chmee QUOTE (algorimancer @ May 25 2006, 09:20 ... May 25 2006, 03:59 PM
ljk4-1 QUOTE (Chmee @ May 25 2006, 11:59 AM) A g... May 31 2006, 08:32 PM
DonPMitchell Fusion releases more energy, but fusion reactors d... May 25 2006, 04:46 PM
AndyWard How about Zubrin's Nuclear Salt Water Rocket?
... May 25 2006, 06:13 PM
DonPMitchell QUOTE (AndyWard @ May 25 2006, 11:13 AM) ... May 25 2006, 07:35 PM
Richard Trigaux WAAAAAH! Its Zubrin, it's mad, and it work... May 25 2006, 07:58 PM
Stephen QUOTE (Richard Trigaux @ May 25 2006, 07... May 26 2006, 02:08 AM
remcook I thought nuclear reactor were saver to launch tha... May 26 2006, 08:28 AM
Richard Trigaux QUOTE (remcook @ May 26 2006, 08:28 AM) I... May 26 2006, 11:06 AM
DonPMitchell Fusion power is great, I'm all for it. But so... May 27 2006, 06:39 AM
Bob Shaw Don:
VASIMR looks kind of sensible.
Bob Shaw May 27 2006, 12:15 PM
DonPMitchell QUOTE (Bob Shaw @ May 27 2006, 05:15 AM) ... May 27 2006, 03:33 PM
newbie >Fission reactors are up to about 50% efficienc... May 27 2006, 06:11 AM
Richard Trigaux QUOTE (newbie @ May 27 2006, 06:11 AM) ... May 27 2006, 06:32 AM
BruceMoomaw Rather grim news on the space elevator front -- a ... May 27 2006, 11:56 AM
BruceMoomaw A MUCH better one (predictably) is Poul Anderson... May 31 2006, 11:03 PM
jsheff Here's another idea:
As someone here previousl... Jun 3 2006, 09:10 PM
DonPMitchell It's interesting that 86 percent of the energy... Jun 5 2006, 04:13 AM
ugordan QUOTE (DonPMitchell @ Jun 5 2006, 05:13 A... Jun 5 2006, 07:11 AM
DonPMitchell QUOTE (ugordan @ Jun 5 2006, 12:11 AM) Th... Jun 5 2006, 08:14 PM
ugordan QUOTE (DonPMitchell @ Jun 5 2006, 09:14 P... Jun 5 2006, 08:43 PM![]() ![]() |
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