Preliminary Gemini 4 Crew Debriefing, Part II, 1965

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McDivitt
McDivitt
Sunrise seemed to be the time at which t he
scanner had the largest tendency to br eak lock ,
and if it didn ' t break lock, it would at l east
put in spuri ous inputs which were obviously not
required other than due to the confusion factor
that the sunrise was causing on the scanner.
Again, I have one at 11 :58, at sunrise , the scanner
60 degrees to the sun, broke lock once and pul sed
quite a few t imes extr aneously, but caught
itself and continued to track.
I think on the
whole that the scanner worked real well .
So do I .
As a matter of fact , I bel ieve in the
last 20 or 24 hours, however long we had the
Horizon Scan Mode on, that we only really lost
control of the spacecraft that one time, where we
did the pitching maneuver I've already discussed .
I think in every other instance , although it
pulsed needlessly two or three times at sunset if
the scanner was pointed toward the sun, it never
really lost lock and it certainly never l ost
control .
The light would come on every now and
then , but it would --.
But , I don ' t think that the light came on more than
three or four times in t hose l ast 24 hours .
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