Rodrick Su (rsu@tigana.com)
Sat, 9 Sep 2000 06:42:15 -0700


> -----Original Message-----
> From: owner-gundam@ml.aeug.org [mailto:owner-gundam@ml.aeug.org]On
> Behalf Of -Z-
> Sent: Friday, September 08, 2000 7:52 PM
> To: gundam@aeug.org
> Subject: RE: [gundam] UC Continuation
>
>
> > Absolutely no need to do that. Far better to accelerate at a tiny
> > fraction of a gee using a fuel-efficient engine, like the pulse
> thrusters
> > I mentioned above. In order to reach, say, half the speed of light -
> > after which relativistic effects start to kick in - you'd have to
> > accelerate at one gee for roughly a year. Accelerate at 1/50 of a gee,
> > and you'd hit that speed in a half-century. That gives the one-gee guy a
> > 25-light-year head start, but after that they're both covering 50 light
> > years per century.
>
> At one gee acceleration, it should only take half a year to reach 95% of
> lightspeed, which is about the best you can hope for given the
> increase in mass
> that goes with velocity. At 0.95C, you could make it to Alpha
> Centauri, 4.3
> lightyeats away, in about 14.5 years.
>
> The bad news is that, over that distance and time, you'd need
> about 16 billion
> tons of propellant for each ton of payload!
>

And the things most people forgot about space travel. When you get there,
you need to decelerate in order to stop.

[ Rodrick Su [ ]
[ rsu@tigana.com [ Life is a work in progress ]

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