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- Newsgroups: sci.space
- Path: sparky!uunet!wupost!cs.utexas.edu!torn!utzoo!henry
- From: henry@zoo.toronto.edu (Henry Spencer)
- Subject: Re: *** BUSSARD RAMSCOOP ***
- Message-ID: <C0937v.FvM@zoo.toronto.edu>
- Date: Sat, 2 Jan 1993 23:43:05 GMT
- References: <85979@ut-emx.uucp> <PqVNwB6w165w@tradent.wimsey.bc.ca>
- Organization: U of Toronto Zoology
- Lines: 25
-
- In article <PqVNwB6w165w@tradent.wimsey.bc.ca> lord@tradent.wimsey.bc.ca (Jason Cooper) writes:
- >> I don't know exactly how you will get the hydrogen to fuse in the ramjet.
- >> So far that problem remains unsolved here on Earth, except for fusion
- >> reactions catalyzed by atomic explosions.
- >
- >The H will be highly compressed by the pressures from the rest of the H
- >coming in. It'll be blocked where it stops by magnetic fields...
-
- Not good enough, alas. The pressure at the *center of the Sun* produces
- only the most sluggish hydrogen reaction -- one that will take billions
- of years to consume the Sun's hydrogen supply.
-
- Ordinary hydrogen burns quickly in thermonuclear reactions only under
- near-supernova conditions. The heavier isotopes used in fusion bombs
- burn like gasoline by comparison, to the point where they are distinctly
- rare in the universe -- even the small supply existing on Earth requires
- significant effort to explain.
-
- Building the ramscoop itself is the easy part (difficult though it is).
- Getting the hydrogen to *do* something useful, once collected, is hard.
- Using it as reaction mass for an antimatter-powered jet engine is going
- to be much easier than trying to burn it raw.
- --
- "God willing... we shall return." | Henry Spencer @ U of Toronto Zoology
- -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-