Gemini 4 Experiment Debriefing, 1967

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M-913-65-04
a.
Leakage
b.
Proof pressure
c.
02 compatibility
d.
Ejection envelope
e.
Cold temperature
f.
Rapid decompression
g.
Life cycling
h.
Visor testing
Should the 25-foot long tether fail in some manner, the pilot will be carrying
a chestpack that has been compatibility qualified with the G4C suit and con­
sists principally of an emergency oxygen bottle with automatic valving.
It should be emphasized that both the primary and backup flight crews have
undergone 40 minutes cabin depressurization with the hatches open at a
simulated altitude of 150,000 feet in the chambers at McDonnell, St. Louis
during which time they practiced opening and closing the hatches, taking
pictures, and other actions that will take place during EVA.
The extravehicular maneuvering will be accomplished using a zero g Integral
Propulsion (ZIP) Unit as shown in Figure 5.
This device is handheld and
accomplishes propulsion by jetting oxygen out through a single forward firing
nozzle and two aft firing nozzles as selected and aimed by the operator.
It
includes a camera mounted for convenient extravehicular photography.
FIG. 5
6/1/65
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