Gemini 7 Technical Debriefing, 1965

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29
and having the HF/DF on. I'.m not sure what kind of data
they got but I hope they got so.mething. The first one we
had to do on the lKJRIZ.AN SC.AN; it took so.me fuel and I
wonder really if it was worth it.
Borman
At about 166,40 we noted our drift rate picking up and we
finally determined this was from the water boiler venting.
It resulted in a left yaw rate and this continued periodi­
cally throughout the mission. It certainly would not be
objectiona.l if we had fuel to counteract it. During a
night period, in which we didn't do any attitude control
at all, I timed the rates during the 13th day, and when we
woke up they were about 7 degrees per second. I timed
them around the horizon and came up with 7 degrees per
second. About the only thing you can say about it is that
it requires fuel to stop it.
It occurs primarily in left yaw and left roll.
Lovell
There are two things in the s/c that causes the yaw left
for so.me reason. Gus first noticed it and I think it is
characteristic of the s/c. One is the water boiler and the
other is,every tie you turn off the power it fires two
thrusters that give it a left yaw. The same two all the
time.
Borman
We tried to beat that ever way we could. Every time we