Gemini 4 Experiment Debriefing, 1967

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exercise, and I think - I guess because - you probably - might have
guessed he had about 60 pulls that you were really heating yourself
up a little bit under those conditions.

Well, I made the comment that 30 was kind of trivial.

Right.

Then I said 60 warmed me up in the suit more than I would have liked
to have been, I was kind of warm most of the time anyway, and it just
made me a little warmer. So it wasn't a real big exercise workload,
the kind of exercise that you would do over in the gym.

Right. I think that some people just get a misconception of this
thing - this exerciser- the fact that we call it that that we use
the word exercise, that we should use the proper prospective
here, what actually was taking place, which is a very short spurts
of energy expenditures; yes, but not exercise like in a gym or
a real good workout, of any type.

Do you feel that the ventilation in the suit was adequate?

I did, but there again, it was adequate but marginal. You couldn't
do a lot of exercise, you would get a heat load. As a matter of fact,
when Ed was exercising a lot, I could actually feel the heat going
up into my side of the suit also. And Ed had a - Ed felt warmer
than I did all during the flight.

I think you are aware that you had different temperatures on our suits.. Which will help explain the difference in the feelings as far as the environment.

How could you feel the heat when he exercised?

Well, it is a closed loop. There are two branches to the loop.

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