Preliminary Gemini 4 Crew Debriefing, Part I, 1965

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268
other hand, it didn't seem to make the space­
craft roll either. Then I turned that ring off
and went over and ddd it on the other ring.
Identically the same thing happened.
I thought
I might have trouble with the roll -gyro .
I
turmid the roll gyro to SECONDARY.
That didn 't
seem to make any difference.
We went back to
PRIMARY .
I remember commenting at that time
that the RCS was a lot looser in control than
the OAMS.
It seemed to me that the OAMS held
the spacecraft attitude better. It seemed like
it controlled to a rate deadband that was
smaller than the RCS deadband.
I don't know
why you're using the same gyros and the same
electronics.
The only thing that could be
different would be the attitude drivers on the
RCS might be activiating slower than they are
in the OAMS.
It seemed like the rates were
such a--seems like there must be a lag in the
whole system. It seemed like the deadband in
the RCS was twice what it was in the OAMS . It
operated properly.
There's so much difference
between looking at that ball on firing retros
~N-FIE>ENl~L