If no grav lifters... Jeff Zeitlin (24 Feb 2018 01:29 UTC)
Re: [TML] If no grav lifters... Caleuche (24 Feb 2018 03:00 UTC)
Re: [TML] If no grav lifters... shadow@xxxxxx (24 Feb 2018 15:51 UTC)
Re: [TML] If no grav lifters... Jeff Zeitlin (24 Feb 2018 18:15 UTC)
Re: [TML] If no grav lifters... shadow@xxxxxx (24 Feb 2018 21:31 UTC)
Re: [TML] If no grav lifters... Jeff Zeitlin (25 Feb 2018 04:35 UTC)
Re: [TML] If no grav lifters... shadow@xxxxxx (25 Feb 2018 19:39 UTC)
Re: [TML] If no grav lifters... Bruce Johnson (24 Feb 2018 20:30 UTC)
Re: [TML] If no grav lifters... Richard Aiken (26 Feb 2018 00:47 UTC)
Re: [TML] If no grav lifters... Tim (26 Feb 2018 03:10 UTC)
Re: [TML] If no grav lifters... Richard Aiken (26 Feb 2018 03:43 UTC)
Re: [TML] If no grav lifters... Tim (26 Feb 2018 04:16 UTC)
Re: [TML] If no grav lifters... Richard Aiken (26 Feb 2018 04:36 UTC)
Re: [TML] If no grav lifters... Tim (27 Feb 2018 06:51 UTC)
Re: [TML] If no grav lifters... Richard Aiken (27 Feb 2018 23:34 UTC)
Re: [TML] If no grav lifters... Tim (28 Feb 2018 07:06 UTC)
Re: [TML] If no grav lifters... Richard Aiken (08 Mar 2018 09:27 UTC)
Re: [TML] If no grav lifters... shadow@xxxxxx (27 Feb 2018 02:30 UTC)
Re: [TML] If no grav lifters... Evyn MacDude (25 Feb 2018 06:16 UTC)
Re: [TML] If no grav lifters... Richard Aiken (26 Feb 2018 01:34 UTC)

Re: [TML] If no grav lifters... shadow@xxxxxx 25 Feb 2018 19:38 UTC

On 24 Feb 2018 at 23:35, Jeff Zeitlin wrote:

> >As Dr. Robert Forward pointed out in several places, an antimatter
> >rocket has an "interesting" property. Depending on the mix of
> >matter/antimatter you get different exhaust velocities. Which means
> >that a mass ratio of 4 works for the whole range of thrusts!
>
> "mass ratio of 4"? Pointers to a layman's explanation?

Rato of mass of fueled ship to unfueled ship.

Grab a copy of Dr. Forward's "Indistinguishable from Magic". It's a
collection of science essays alternating with short stories on the
same topic.

http://www.baen.com/indistinguishable-from-magic.html

The ebook is only $4.
--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com