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What is the composition of JP-8 fuel?
Gasoline and Kerosene
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At room temperature, how many times longer will it take water to settle out of JP-8 than out of gasoline?
4 times longer
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The main fuel control allows the engine to safely accelerate, reducing the possibility of...
Flameout
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The purpose of a fuel/oil cooler in a fuel system is to...
Heat the fuel and cool the oil
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What type of fuel control uses items such as thermocouples, relays, amplifiers, and solenoids to help control a jet engine?
Electrohydromechanical
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On fuel controls that require setting during an engine trim, calibration and/or adjustment screws must be...
safety sealed and/or lockwired
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When in the primary mode, what controls the operation of the F100-PW-220 engine?
DEEC (Digital Electronic Engine Control)
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On an F100-PW-220 engine, the MFC (Main Fuel Control) is capable of operating in how many modes?
2 modes
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Which F100-PW-220 engine fuel system component controls pressurization of the core engine fuel system?
P&D Valve (Pressurizing and Dump Valve)
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Which stage of compressor air drives the augmentor fuel pump on an F100-PW-220 engine?
13th Stage
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On the F100-PW-220 engine, which component controls the augmentor fuel control?
DEEC (Digital Electronic Engine Control)
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Core engine fuel flow sequence on an F100-PW-220 engine starts at the main fuel pump and then goes through the...
main fuel control, fuel/air cooler, pressurizing and dump valve, and fuel nozzles
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Operational control of the F108-CF-100 engine is achieved by the use of the power lever, fuel shut-off lever, and...
PMC (Power Management Control)
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The F108 engine fuel pump contains a low-pressure stage (centrifugal boost stage) and a high pressure...
Gear Stage
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On a F108-CF-100 engine, the fuel injectors contain...
Both primary and secondary fuel flow passages
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What supplies the AE2100D3 FADEC with power until engine RPM is sufficient for the alternator stator to take control?
Airplane 28 VDC power supply
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What component is controlled by the AE2100D3 FADEC through ENGINE START switch for normal engine shutdown or by the fire control handle for emergency shutdown?
Latching Shutoff Valve
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On the T56 engine, how many and what type of fuel pumps are contained in the fuel pump and filter assembly?
2 gear; 1 boost
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What T56 engine controls the rotary movement of the fuel control metering valve?
Compressor Inlet Pressure
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On the T56, what compares the desired throttle setting from the coordinator with the actual TIT signal from the thermocouples?
TD Amplifier (Temperature Datum Amplifier)
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Which T56 engine component sends the fuel to the fuel manifold?
TD valve
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When the null orifice on the T56 engine TD valve is set to zero, how much fuel will the valve bypass?
20%
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In addition to the visual inspection the T56 engine fuel nozzle also requires what type of inspection?
Spray Pattern
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Which type of oil cooler operates on the same principle as a radiator in an automobile?
Air
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When an engine is not operating, static preload for a carbon oil seal is provided by...
Spring Pressure
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The F100-PW-100 engine oil pressure varies with N2 speed, engine inlet oil temperature, and...
Oil Nozzle Condition
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What term is used to indicate that air is being mixed with the oil in the oil pump to create pockets of air?
Aeration
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In an engine oil tank, which device seperates the air from the oil?
Deaerator
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Which type of oil system stores the oil in a tank fitted to the side of the engine?
Dry Sump
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Which type of oil system design places the oil cooler in the pressure subsystem?
Hot Tank
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On an F100 engine, the breather pressurizing valve is internally mounted in the...
Gearbox
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On an F100-PW-220 engine, the air/oil cooles are mounted on the fan duct and use...
Secondary fan airflow as a coolant
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On an F100-PW-220 engine, what component permits oil to bypass the oil filter during cold weather starts?
Filter bypass valve
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What is used to check the oil level in a F108-CF-100 engine?
Filler cap with a graduated gauge
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Approximately how many GPM (Gallons Per Minute) does the AE2100D3 PUAD (Power Unit Accessory Drive) lube and scavenge pump provide at engine PTO (Power Takeoff)?
5
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What AE2100D3 component drives the PGB (Propeller Gearbox) lube and scavenge pump?
GMAD (Gearbox Mounted Accessory Drive)
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Which type of oil pump is used on the T56 engine?
Gear
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The amount of ram air passing through the oil cooler core is regulated by the...
Flap Actuator
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Bleed air flowing through which component increases airflow through the cooler?
Augmentation Ejector
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The valve that allows fluid to flow in only one direction is the...
Check valve
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In the power unit oil system, the dual-port jet mounted on the front side of the compressor air inlet housing is used to lubricate the...
Mid and center sleeve bearings
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The power section and RGB (Reduction Gearbox) oil systems are joined together at the...
External scavenge oil filter
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Which RGB component prevents oil in the tank from draining into the RGB rear case?
Oil pump check valve
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How many scavenge oil pumps are located in the RGB?
2
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The journeyman must be aware of which hazardous property of modern jet engine oil?
Corrosiveness
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The primary benefit of identifying an impending failure through OAP (Oil Anaylsis Program) is...
Improved safety
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Who is responsible for ensuring that OAP operates properly?
Project monitor
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What are microscopic metallic particles in the oil system called?
Wear Metals
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Oil sampling intervals should not vary by more than...
10%
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The SEM/EDX analysis process differs from conventional oil anaylsis in which major aspect?
SEM/EDX particles must be oil free for analysis to take place.
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What is the term for the process of producing voltage in a conductor when it passes through a magnetic field?
Electromagnetic induction
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On a simple AC generator, which item takes the current from the slip rings to operate the electrical device?
Brushes
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Which part of a generator acts as an automatic switching device, changing alternating current to direct current?
Commutator
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What provides the PTO shaft that is used to drive the CSD?
Engine adapter
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The slide-type resistor in the EGT circuit is used to...
Calibrate the EGT indicator in the flight station
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Which unit of an AC ignition system develops 20,000 volts?
Transformer
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A simple DC ignition system consists of vibrator,...
igniter plugs, and transformer
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On early ignition systems, the high energy capacitor type ignition system does not include a...
Centrifugal switch
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On early ignition systems, what is the purpose of compositors in an ignition system?
Step up voltage high enough to break down the air gap of the ignitor plug
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The T56 engine speed-sensitive control lets electrical current flow to the fuel and ignition system at...
16% RPM
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An F100-PW-100 engine augmentor igniter plug ionizes at a minimum rate of how many sparks per second?
30
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From where does the AE2100D3 ignition system receive its electrical power?
Alternator stator
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What is the output of the AE2100D3 alternator stator?
20-40 VAC
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What component monitors the AE2100D3 ignition exciters spark rate?
NIU (Nacelle Interface Unit)
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The OSG (Over Speed Governer) on the cartridge-pneumatic starter consists of the...
Flyweights and piston
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The JFS (Jet Fuel Starter) is basically a...
Small Gas Turbine Engine
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Which item initially rotates the JFS?
Hydraulic motor
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What engine section houses the JFS combustion section?
Turbine Plenum
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Which component provides an electrical safety cutoff for the JFS if the power turbine accelerates to a 110 percent overspeed condition?
Power turbine overspeed switch
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Oil is supplied to the F-15 JFS through the...
CGB (Central Gearbox) oil system
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On an F-15, the power to start the engines begins with the JFS and continues through the...
AMAD (Airframe-mounted Accessory Drive)
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On the F-15 secondary power system, what is used to stop the JFS starting cycle when the aircraft engine has accelerated to starter cutout speed?
50 % engine cutout switch assembly
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When starting the F-16, which component drive the JFS geartrain, fuel control, and lube pump?
Hydraulic start motor
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How is the AE2100D3 starter control valve actuated?
Electrically
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On the T56 engine, which switch energizes the starter control valve to the OPEN position?
Ground start
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Which T56 engine component functions as an on-off control for the air supply that is sent to the starter?
Starter Control Valve
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Discharge air used for aircraft engine anti-icing to heat-critical areas is taken from which engine area?
Compressor
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On an F108 engine, anti-ice air is ducted from which manifold?
Pneumatic
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On an F108-CF-100 engine anti-ice system, what is the purpose of the air injector on the air regulator?
Control air temperature and pressure
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On an F110-GE-129 engine, the ant-icing system prevents detrimental formation and accumulation of ice on front frame struts, forward centerbody, and...
Fan inlet guide vane flaps
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The T56 engine anti-icing solenoid valve is...
Normally open
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What does a high-altitude stall sound like?
An explosion
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Once the cooling airflow has done its job of cooling the turbine section, where does it go?
Into the gas stream to exit the engine
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On an F108-CF-100 engine, the variable bleed valves bleed air from the...
N1 compressor
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On an F108-CF-100 engine, the direction of the variable bleed valve rotation is controlled by the...
Fuel gear motor
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On an F110-GE-129 engine, the MEC schedules the variable vane positions by the...
Fan discharge temperature and core engine speed
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What AE2100D3 engine component continuously monitors the LVDT (Linear Variable Displacement Transducer) signal and controls the compressor IGV position?
FADEC (Full Authority Digital Electronic Control)
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On the AE2100D3 engine, what type of actuator is the CVG (Compressor Variable Geometry) actuator?
Hydraulic
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The T56 engine component that allows 14th-stage air to close the bleed air valves is the...
Speed-sensitive valve
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What are the two types of thrust reversers?
Aerodynamic blockage and mechanical blockage
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One type of aerodynamic blockage thrust reverser uses...
Vanes inside the duct to create swirling gases
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In the mechanical blockage type thrust reverser, when the reverser is not in use, what happens to the doors?
They retract around the engine exhaust cone, usually forming the rear section of the engine nacelle
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On the F117-PW-100 engine, what component controls hydraulic power for actuating both the fan and core thrust reversers?
Control Valve
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The F117-PW-100 fan thrust reverser door upper right and left sensors send a signal to which channel or channels of the EEC (Electronic Engine Control)?
A channel
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The core reverser lock proximity sensors are mounted on the...
Actuator
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How many linear hydraulic actuators are used to deploy and stow the fan thrust on the F117-PW-100 engine?
4
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What component heats the augmentor fuel to provide better vaporization and combustion?
Fuel/oil cooler
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What are the two main types of augmentor (afterburner) ignition systems?
Torch igniter and pilot burner ring
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The F100 engine augmentor's primary nozzle actuator is driven by cables from the...
CENC (Convergent Exhaust Nozzle Control)
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On an F110-GE-129 augmentor variable nozzle, uniform movement and geometric stability of the nozzle is provided by...
Mechanical synchronization of the nozzle actuators
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