Gemini 7 Technical Debriefing, 1965

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82
:Borman
The temperature va.ried with the suits on and the suits off
operation.
I have gone through my notes here, and I note
that it says when we both had suits on and we were just
barely cool enough with both suits on and the :B pumps run­
ning.
On the other hand, when we were both out of the suits,
the :B pumps only running, we were very comfortable.
When
we were up working and opera.ting, we noticed that the temp­
erature level in the cockpit was just right.
We were run­
ning most of the time with the suits full cold, the heat
exchanger full cold, and maximum air flow on both controls.
Then for several days when we went to bed, we left the con­
trols that way, a.nd we would wake up very cool.
Lovell
Well, there a.re several factors.
I think the size of the
Gemini cockpit and the fact of & completely closed loop
system is very dependent on 2 factors.
One was the heat
output of the people and two was the amount of heat you get
in through the windows due to the sun. At night our heat
output decreased, we put up shields on the windows, includ­
ing some aluminiz~d foil to reflect the sun, and I think
the combination of both these things with the systems we had
during the day time really dropped the heat in the cockpit.
Then, during the day when we were active and had the windows
open a.gs.in, the temperature increa.aed inside the cockpit so