Who wants to help read a Saturn V core stack?
dseagrav at lunar-tokyo.net
Fri Nov 14 18:33:06 CST 2008
Now this is useful. This is the first time we've ever had a name
associated with this.
From ignition to shortly after S2 ignition the software flew in
"Pre-IGM" mode, which we have already figured out. Enough high-level
pre-IGM documentation was recovered to reconstruct it. The part after
was called (wait for it...) "IGM", or Iterative Guidance Mode. The IGM
is significantly more complex. I have some documentation on it but I
haven't managed to reconstruct a working version, and I suspect my
documentation may be incorrect because it was issued some years before
the actual launches took place.
The Pre-IGM simply flew a timed pitch profile and the IGM did the hard
On Nov 13, 2008, at 12:11 AM, jim s wrote:
> I had experience with one of the programmers for the instrumentation
> unit for the S5 stage which was in the ring between the first and
> second stages, I think.
> I was an expert witness in a lawsuit having nothing at all to do with
> this, but he was the expert called for the other party.
> To make a long story short, expert witness' credentials frequently
> turn out to be who has the best credentials.
> I talked to him before we went in to a deposition, and I granted him
> that point before we even started.
> I feel privileged to have met him, and wish we could have visited more
> on the subject rather than what we were paid to do. Sadly I was not
> even supposed to get into anything but luckily this was told to us
> after we had chatted.
> I think his name was Tom Follett, and I do not recall ever finding
> anything about him. I believe that he had a PhD, but I do not recall
> much else, such as company, or education.
> I don't know much about what this system had to do other than ground
> to second stage ignition guidance tasks.
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