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- Path: sparky!uunet!van-bc!tradent!lord
- From: lord@tradent.wimsey.bc.ca (Jason Cooper)
- Newsgroups: sci.space
- Subject: Re: *** BUSSARD RAMSCOOP ***
- Message-ID: <J85swB3w165w@tradent.wimsey.bc.ca>
- Date: Sun, 03 Jan 93 07:36:30 PST
- References: <C0937v.FvM@zoo.toronto.edu>
- Organization: TradeNET International Trade Corp.
- Lines: 35
-
- > 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 Zoolog
- > -Gene Cernan, the Moon, Dec 1972 | henry@zoo.toronto.edu utzoo!henry
-
- Ah, but that would defeat the entire purpose of the ramjet itself! You
- are now carrying around a mass of fuel equal to what you are going to tak
- in in the scoop. Now we get into all of the standard limitations, as the
- faster you want to go, the heavier the ship's going to get, the more fuel
- you'll have to carry, the heavier the ship's going to get, etc. ad
- infinitum. The *REAL* advantage of the ramjet is that this is not
- happening. The fuel is just waiting out there, and it just so happens
- that the faster you go, the more you're going to collect.
-
- Of course, I'm not using the p-p fusion until I'm into the speeds where
- the beta- decomposition involved is not a problem probability-wise, due
- to the large number of chances it will have. How's a carbon-catalyzed
- reaction sound for getting there (except at the lower end, where we'll
- have to use some conventional engine to attain a speed at which THAT
- reaction is possible)?
-
- Jason Cooper
-