Group: sci.physics.particle
From: BradGuth
Date: Tuesday, February 26, 2008 12:04 PM
Subject: Re: The Ion Interstellar Spaceship, from Hell to Sirius

On Feb 25, 8:22 pm, Saul Levy wrote:
> It's only an A type star and a white dwarf, Brad.
>
> I'd accept something much stronger.
>
> Saul Levy
>
> On Mon, 25 Feb 2008 18:06:46 -0800 (PST), BradGuth
>
> wrote:
> >On Feb 25, 4:39 pm, Saul Levy wrote:
> >> I would think it so low as to be meaningless,Brad.
>
> >> 10 times our solar wind? Nah.
>
> >> Saul Levy
>
> >But Sirius/a/b is so freaking big and extremely powerful, as well as
> >burning so much hotter. How can that be "so low as to be
> >meaningless"?
>
> >What would you accept as meaningful?
>
> >How about a direct halo CME encounter?
> >. - Brad Guth

If you are coming in for a solar system orbital landing (sort of
speak), as having the ion outflow of Sirius at perhaps a thousand fold
better pressure than our sun to start off with, combined with the
velocity squared benefit of your 0.1'c' SOA (30,000 km/s speed of
advance), along with your having deployed a solar ion parachute of
even a million m2 to work with, as such this method is going to slow
something down, at least up until the point of vaporizing the chute.
Obviously I'd much rather have my very own 3He/fusion and/or Rn222 ion
propulsion thrusters, and otherwise the energy from my thorium reactor
for pumping out those extremely fast exiting ions at a flow rate as
great as a kg/s for my retrobraking disposal.
. - Brad Guth

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