Assignment 5 14008 Jet Aircraft Fuel And Fuel Systems.” And “Jet Aircraft Engine

Front 1

Which of the following is NOT a
variable sensed by the fuel control?

Back 1

Low-pressure compressor speed

Front 2

From what pump does the fuel control
get its high-pressure fuel?

Back 2

3. Engine-driven fuel pump

Front 3

What valve maintains a constant
pressure differential across the
throttle valve?

Back 3

Pressure-regulating valve

Front 4

A constant fuel pressure drop is
maintained across the throttle valve
by using a computing system to
position which of the following
components?

Back 4

The contoured plunger

Front 5

Which of the following components is
the last to act upon metered fuel
before it leaves the fuel control?

Back 5

The minimum pressure and shutoff
valve

Front 6

The force proportional to PB is sent
to the multiplying lever through
which of the following components?

Back 6

A set of rollers

Front 7

The equilibrium of the multiplying
lever is upset by what variables?

Back 7

WF/PB or PB

Front 8

Which of the following components
returns the multiplying lever to its
equilibrium position?

Back 8

A spring

Front 9

What element in the fuel control
senses burner pressure with respect
to ambient pressure?

Back 9

Burner pressure limiter

Front 10

The flyweight force in the speed–
sensing governor varies, and the
pilot valve is positioned to meter
either low- or high-pressure fuel to
the speed servo piston. At what
time does this action occur?

Back 10

When high–pressure compressor
rotor speed changes

Front 11

What are the temperature-sensing
bellows and servo assembly connected
to through a lever–and–yoke
assembly?

Back 11

Acceleration–limiting cam

Front 12

If the primary control system fails,
the manual system may be engaged by
operating a switch in the cockpit to
energize which of the following
components?

Back 12

Manual transfer solenoid

Front 13

The danger of hot starts and after
fires is reduced by a pressure
differential combustion chamber
drain valve that opens under which
of the following circumstances?

Back 13

Valve spring force is greater
than the pressure within the
chamber

Front 14

Which of the following parts is
peculiar to the modern jet engine
fuel nozzle?

Back 14

Flow divider

Front 15

Most jet engines today use which of
the following types of fuel nozzle?

Back 15

Duplex

Front 16

By what means are the fuel selector
valves controlled?

Back 16

Electrically or manually

Front 17

What device allows you to override a
defective fuel selector valve motor?

Back 17

Cable and drum

Front 18

What type of filter is especially
valuable for use between the fuel
tank and engine?

Back 18

Microfilter

Front 19

The filters used to remove minute
particles of contamination are which
of the following types?

Back 19

Microfilter and wafer screen

Front 20

What type of filter is used when
filtering action is NOT critical?

Back 20

screen mesh

Front 21

What are the two general groups that
pumps are identified by?

Back 21

Constant displacement and
variable displacement

Front 22

When variable displacement enginedriven
fuel pumps are used, two
pumps are connected in parallel for
which of the following reasons?

Back 22

To provide a broader safety
margin during takeoff and
landing

Front 23

What device maintains constant
pressure in the constant pressure
type of engine-driven fuel pump?

Back 23

A spring–loaded pressure relief
valve

Front 24

For additional information on the
principles and operations of fluid
power systems and components, you
should refer to NAVEDTRA 12964,
Fluid Power TRAMAN.

Back 24

true

Front 25

Fuel leaks are sometimes difficult
to locate because of the arrangement
of lines and components in an
aircraft fuel system. What are the
first steps to isolate the leak?

Back 25

Use schematic diagrams in the
MIM to identify troubleshooting
steps

Front 26

The Navy uses a red dye in JP–5 fuel
tanks. What is the purpose of this
dye?

Back 26

Leak detection

Front 27

To detect a leak in an aircraft fuel
tank, you should add a 2-ounce can
of liquid red dye to what total
quantity of fuel?

Back 27

100 gallons of fuel

Front 28

Which of the following actions do
you follow if you find conflicting
information between your aircraft
maintenance manuals and NA 01–1A-35?

Back 28

Follow the procedures in NA
01–1A–35

Front 29

NA 01-1A–35 contains information on
which of the following areas?

1. Aircraft fuel cell maintenance
2. Required safety equipment for fuel cell maintenance
3. Both 1 and 2 above
4. Specific type aircraft fuel cell maintenance

Back 29

3. Both 1 and 2 above

Front 30

Which of the following types of
maintenance may be performed during
aircraft fueling/defueling
operations?

Back 30

No maintenance is permitted

Front 31

What agent is used for purging the
fuel cells?

Back 31

air

Front 32

Which of the following steps should
you take to prevent fuel cell
contamination during maintenance?

Back 32

Cap or plug all fuel lines

Front 33

When removing a fuel cell, what, if anything, should be done to the
sharp edges in the cell cavity?

Back 33

Tape them over

Front 34

When removing a fuel cell, if it
becomes necessary to pry on rubber
fittings or on the cell, which of
the following tools should be used?

Back 34

Wooden paddles

Front 35

If fuel cell maintenance time
exceeds 72 hours, the cell interior
walls must be coated with which of
the following items before closing?

Back 35

1010 oil

Front 36

To prevent cracking of the fuel
cells during cold weather folding,
cells should be warmed to what
temperature?

Back 36

60°F

Front 37

When installing a fuel cell. what
should be applied to the outer
surface of the cell and cavity to
aid in moving the cell into
position?

Back 37

Talc powder

Front 38

Which of the following is one of the
major causes for a newly installed
fuel cell to leak?

Back 38

The improper torquing of bolts
and fittings

Front 39

After fuel cell installation, which
of the following methods is
recommended to check the system for
leaks?

Back 39

Air pressure

Front 40

Why is the main fuel strainer
installed in the lowest point in the
fuel system?

Back 40

To trap water

Front 41

Before any maintenance is performed
on the D–704 buddystore, which of
the following actions must be taken?

Back 41

The hose jettison cartridge must
be removed

Front 42

Which of the following components
must you inspect for stress cracking
and corrosion when rigging and
adjusting fuel controls, selectors,
and shutoff valves?

Back 42

Rods and bell cranks where the
bearings are staked

Front 43

Which of the following conditions
should be checked prior to adjusting
the engine power controls?

Back 43

Power lever is free from binding
and the controls have FULL THROW
at the console

Front 44

High cable tension may result in
sluggishness or insufficient travel
of the controls.

Back 44

False

Front 45

Which of the following operational
factors determines the grade of
lubricating oils used in engines?

Back 45

Operating conditions

Front 46

Which of the following types of
lubricants are LEAST useful at high
temperatures?

Back 46

Animal and vegetable oils

Front 47

What is the base or origin of
synthetic oils?

Back 47

Chemical

Front 48

Which of the following oils is the
primary type of oil used in Navy
and Marine Corps turbine engines?

Back 48

MIL–L–23699

Front 49

What function performed by oil
depends on circulation of the
lubricant?

Back 49

Cooling

Front 50

How many digits are in the grade
number that identifies an aircraft
engine lubricating oil?

Back 50

Four

Front 51

In the military grade number 1080,
what does the 1 identify?

Back 51

Use of the oil

Front 52

What is the SAE of oil with an
Saybolt of 1080?

Back 52

40