4-59.
What source activates the multipur-
pose initiators upon ejection?
1.
Ballistic gas pressure from
primary initiators
2.
Ballistic gas pressure from
thermal batteries
3.
Two pyrotechnic cartridges, after
42 inches of travel
4.
Electronic sequencer, 120
milliseconds after activation
4-60.
In the absence of a start switch
signal, the electronic sequencer
takes what action?
1.
It continues in the “wait” mode
2.
It activates automatically after
approximately 200 milliseconds
3.
It initiates the underseat rocket
motor
4.
It activates the start switch
4-61.
What is the total burn time of the
underseat rocket motor?
1.
200 milliseconds
2.
220 milliseconds
3.
250 milliseconds
4.
2 seconds
4-62.
Which of the following is/are the
critical actions for an electronic
sequencer?
1.
Sensing the seats altitude and
airspeed
2.
Choosing the appropriate timings
from a set of available sequences
3.
Both 1 and 2 above
4.
Providing initial start-up from
the thermal batteries
4-63.
Speed and altitude are measured from
the sequencer by what three types of
sensors?
1.
Pitot pressure, altitude,
airspeed
2.
Pitot pressure, altitude, base
pressure,
3.
Pitot pressure, base pressure,
accelerometer
4.
Altitude, airspeed, attitude
4-64.
What total number of shielded cables
are used to transmit electrical
signals to and from the electronic
sequencer?
1.
Six
2.
Seven
3.
Eight
4.
Nine
4-65.
What is the total number of opera-
tional ejection modes of the NACES?
1.
Five
2.
Seven
3.
Three
4.
Nine
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