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