Just got this from Amazon, reading it in the kindle app for the PC.
Written by Larry Niven and Jerry Pournelle.
On the cover is a quote from Robert Heinlein..."Possibly the greatest science fiction novel I have ever read."
I was looking for something from Saberhagens Berserker series but happened upon this.
It's very good, at least to me, the detail it goes into concerning multiple G space flight and the difficulty of that is very good.
$6.35 from Amazon
If your curious you can read a fairly long excerpt here...
http://www.amazon.com/dp/B004YDL2CY/ref=rdr_ext_sb_ti_sims_2#_No spoiler, I'm only 86 of 555 pages into it, go read the excrept.
Oh BTW, if any of you all have read any of the Berserker series and remembers the story of the machine that sings to itself, please let me know.