1.21 Temperature control of the
vent-air system is regulated
between which of the following
ranges?
1.
40°F and 80°F
2.
50°F and 100°F
3.
70°F ± 15° F
1-22. The vent air controller responds
to signals from which of the
following devices?
1.
The vent suit temperature
control valve
2.
The temperature sensor
3.
The temperature selector
4.
Both 2 and 3 above
1-23. The range of numbers on the
temperature selector thumbwheel
is 1-14.
1.
True
2.
False
1-24. When an aircraft is changing
altitude, the temperature is
maintained within what tolerance
level?
1. A ± 2°F
2. A ± 5°F
3. A ± 10°F
4. A ± 12°
1-25. Which of the following valves
protects the vent-air system from
accidental compressurizatiom?
1-28. Which of the following groups of
3. Ejector
1.
Check
2.
Bypass
3.
Restrictor
4.
Relief
1-26. Which of the following condi-
tions could occur from the
formation of ice on aircraft
surface?
1.
Decreased lift
2.
Additional weight
3.
Difficulty in controlling
aircraft
4.
Each of the above
1-27. How many methods are used on
naval aircraft to eliminate or
prevent ice formation?
1.
One
2.
Two
3.
Three
4.
Four
deicer boots starts to inflate
after 30 seconds of an inflation
cycle have elapsed?
1.
Inbaard wing
2.
Outboard wing
3.
Outboard stabilizer and
vertical fin
4.
Inboard stabilizer and fin
IN ITEMS 1-29 THROUGH 1-32, SELECT FROM
COLUMN B THE DEICING SYSTEM COMPONENT
THAT PERFORMS EACH FUNCTION IN COLUMN A.
COMPONENTS IN COLUMN B MAY BE USED MORE
THAN ONCE.
1-31.
1-32.
A. Functions
1-29. Allows suction
to be applied to
the deicer boots
to hold them down
during flight
1-30. Causes the inlet
to the boots to
change from
suction to
pressure when
energized
Maintains the
pressure of the
bleed air in the
deicer system at
B. Components
1.
Pressure
regulator
and relief
valve
2.
Distribu-
tor valve
4.
Suction
relief
valve
approximately 18 psi
Provides the necessary
suction to deflate the
deicer boots
1-33.
When suction in the manifold
lines becomes excessive, the
suction relief valve will open
and stay open until suction
pressure is reduced to
approximately what pressure?
1.
5 in Hg
2.
2 in Hg
3.
6 in Hg
4.
4 in Hh
3
