Gemini 4 Experiment Debriefing, 1967

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M-913-65-04
•
MSC-2, Proton Electron Spectrometer
•
MSC-3, Tri-Axis Magnetometer
•
MSC-10, Two-Color Earth's Limb Photos
•
S-5, Synoptic Terrain Photography
•
S-6, Synoptic Weather Photography
UNUSUAL TASKS OF THIS MISSION
One of the interesting tasks of this mission is the duration of the flight.
It
will be the longest ever to be conducted by a two-man crew.
Another highly
interesting item is that control of the mission for the first time wil I be from the
Mission Control Center (MCC) Houston.
Some elements of the Mission Control
Center at Cape Kennedy and the GSFC computing facility will be standing by as
a backup during the launch phase.
The computing facilities at GSFC will also be
used as a backup to MCC-Houston during the orbital phase.
Flight controllers will
man the MCC in three shifts to give complete round-the-clock coverage of the four­
day mission.
Crew control of reentry will be ac~omplished by tracking the roll
needle rather than nulling the down-range and cross-range needles as on GT-3.
The experiments will, of course, contribute much information for the scientific
and medical communities.
The G4C suit which replaces the G3C suit used on
GT-3 has the fol lowing new features: a triple overvisor, a redundant pressure
closure seal (zipper), and thermal and meteoroid protection integrated in the
outer cover layer.
Abort procedures to be utilized by the astronauts in the
unlikely event it becomes necessary for them to terminate. a mission before orbital
insertion are different from those used in the Mercury program.
In that program,
the fireball that would have been created had a conflagration occurred on the pad,
would have been large enough to
ABORT PROCEDURES
engulf an ejecting astronaut, so
it was necessary to add an escape
rocket to I ift the entire spacecraft
free of the area.
The GLV, on
the other hand, uses self-igniting
fuels which, upon mixing, create a
fi reba II sma II enough so that the
astronauts can eject from the
spacecraft in much the same man­
ner as is done in today's high
performance jet aircraft.
This
is called the Mode I abort pro­
cedure.
The three abort modes
are more fully defined by the
altitude and elapsed time-after­
launch parameters depicted on
Figure 2.
FIG . 2
MOOE I - EJECT AfTEll SHUTDOWN
MOOE ll - SALVO RETROS AFTER SHUTDOWN
MODE ID - SHUTDOWN, SE PARATE, TURN AROUND,
RETROFIRE
-□~
OEIAYEO
MOOE
n
(WA IT 5
SECS )
15,000FT. _ _ ____.____~--'<-+--~-
' ~'
MOOE
I
50
SECONDS
SEA LEVEL-----------''----L--'--
5/24/65
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