ITEMS 4-40 THROUGH 4-45 PERTAIN TO
COMMON AIR-CONDITIONING COMPONENTS.
4-40.
4-41.
4-42.
4-43.
Which of the following components
is used in bleed air ducting to
compensate for duct expansion due
to high temperatures?
1.
Flexible line connectors
2.
Marmon clamps
3.
Thermal compensators
4.
Flexible mounting brackets
Which of the following statements
is correct concerning the
materials bleed air and air-
conditioning distribution lines
are made of?
1.
Air-conditioning lines are
made of stainless steel and
bleed-air lines of aluminum
alloy
2.
Air-conditioning and bleed-
air lines are both made of
stainless steel
3.
Bleed-air lines and air-
conditioning lines are both
made of aluminum alloy
4.
Bleed-air lines are made of
stainless steel and air-
conditioning distribution
lines of aluminum alloy
Excessive torquing of clamps used
in bleed-air air-
conditioning systems will cause
which of the following results?
1.
Sructural loads on the
ducting
2.
Structural loads on support
brackets
3.
Structural loads on the
clamping devices
4.
Ruptures in the system
ducting
When installing a base between
two duct sections, what is the
minimum and maximum distance
allowed between the duct ends?
valve, check clamp for proper
position, then retorque to an
additional 10 percent of
original torque valve
Learning Objective:
Recognize the components
and functions of the cabin
cooling and antifog
system.
1.
1/8 inch minimum, 1/4 inch
maximum
2.
1/8 inch minimum, 3/4 inch
maximum
3.
1/4 inch minimum, 1/2 inch
maximum
4.
1/4 inch minimum, 3/4 inch
maximum
4-44.
When installing a hose between
two ducts, what is the maximum
misalignment allowed between the
two duct ends?
1.
1/8 inch
2.
1/4 inch
3.
3/8 inch
4.
1/2 inch
4-45.
When installing rigid couplings
on ducting, which of the
following methods is used to
assure proper alignment of the
flanges in the couplings?
1. Tighten coupling until gap is
completely closed, then back
off 1/4 turn on the nut
2. Torque coupling to prescribed
torque, tap around coupling
with a plastic mallet and
retorque to an additional 10
percent of prescribed torque
3. Tighten coupling firmly, tap
around outer surface of
coupling with a plastic
mallet, then tighten coupling
to prescribed torque valve
4. Torque coupling to torque
ITEMS 4-46 THROUGH 4-52 PERTAIN TO THE
CABIN COOLING AND ANTIFOG SYSTEM ON THE
F-18 AIRCRAFT.
4-46.
When an increase in air temper-
ature is desired in the cabin,
air is routed through which of
the following components?
1.
Cabin/defog ram air control
valve
2.
Cabin add heat valve
3.
Cabin flow valve
4.
Anti-ice add heat valve
2
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