Preliminary Gemini 4 Crew Debriefing, Part II, 1965

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140
White
McDivitt
White
wanted two people to be up at the same time you
could really have three periods during the day.
You could take two of these six-hour sleep periods
and really make them sacred so that nothing could
touch them.
Then you could just take those other
two six hour sleep periods, and maybe chop periods
off each end of the thing~in such a manner that
you' d be able to get one good sleep period and
some rest periods in between.
I think during a
six-hour sleep period you ought to plan to be in
a drifting flight and not do any experiments.
really think there ought to be one long sleep
period with no radios and no thrusters firing.
Then you've got a real chance.
You might be able to put i t in Horizon Scan.
Well, even then it goes, THUMP, THUMP, THUMP,
every once in a while, you know.
I think you could almost do this by ear. If it
was bothering the gu:y, you shouldn't do it. In
my opinion I think we're pretty close to the same
thing.
I had originally told Chuck I thought that
the four-hour sleep period wasn't satisfactory.
We should have one period of six hours of sleep,
I