Preliminary Gemini 4 Crew Debriefing, Part I, 1965

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White
McDivitt
White
231
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in the system and this 2 per cent was, in general,
about 7 pounds .
That was really quite a bit of
fuel. 4 percent was between 12 and 15 pounds,
depending where you were on the scale. This was
and awful lot of fuel to have suddenly disappear.
I just wanted to comment on that . It was an
interes ting thing. . We'd been dumping our ECS o2
pressure. We'd gone to High Rate or cabin repress
and dumping the stuff overboard--overpressurizing the
cabin and having the cabin vent to keep the pres­
sure down.
Finally around this 66 hours, we'd dumped
the thing down to 880 psi on the gage.
This was why
we didn't have to dump it so often. We'd been
dumping it before around 960 psi--dump it there
and bring it back to around 930 psi and let it build
up, and then repeat the cycle again.
That was about every 4 hours.
Yes.
We had to dump at least every 4 hours.
We brought it dovm to 880 psi and this gave us a
period of around 12 hours.
You know, I thought this was a very clever method
of holding the cabin at a higher pressure than
normal by McDonnell--putting the vent down so low
that it vented in a normal mode.
You
~itw:rb\l