WorksheetsQuizz
Total questions: 150
Worksheet time: 1hrs 15mins
What is the compression ratio of the F100-PW-299 ENGINE?
25:1
32:1
0.60:1
0.36:1
what is the basic description of the F100-PW-299 engine?
High by pass, low compression ratio tein spool
High bypass, high compression ratio, twin spool
Low bypass, low compression ratio, twin spool
Low bypass, high compression ratio, twin spool
How many modules does the F100-PW-299 engine consists of?
3
4
5
6
What is the maximum rated thrust at full augmentation for the F100-PW-299 engine?
24,000lb
17,800lb
29,100lb
29,500lb
What is the by-pass ratio of the F100-PW-299 engine?
0.36:1
32:1
0.60:1
25:1
How many bearings does the F100-PW-299 engine has?
3
4
5
6
How is the Inlet Fan module support?
It is supported by the No.1 bearing
It is supported by the No2 bearing in the rear
It is supported by the No1 bearing in the front and the No 2 bearing at the rear
It is supported by No 1, 2 and 3 bearings
What is the functions of the No 1 bearing?
It supports the axial loads of the fan and maintains fan-to-case axial alignment.
It supports the axial loads of the fan and maintains fan to case radial alignment
It supports the fan rotor assembly.
It supports the radial loads of the fan and maintain fan to case radial alignment.
What is the purpose of the 3 stage inlet fan?
The 3 stage inlet fan increases the velocity of the air to the intermediate case, where the airflow is divided between the core engine module and bypass ducts.
The 3 stage inlet fan delivers compressed air to the core engine module
The 3 stage inlet fan increases the velocity of the air to the core engine module.
The 3 stage fan delivers compressed air to the intermediate case, where the airflow is divided between the core engine module and bypass ducts.
In the intermediate case, how is the fan bypass air divided from the rear compressor airflow?
Diffuser
aerodynamic flow splitter
They are not divided
Struts
What is the purpose of the core module?
The core module produces hot, high-pressure gases to rotate the rear compressor drive turbine(High Pressure Turbine)
The core module produces hot, high-pressure gases to rotate the fan drive turbine(Low pressure Turbine)
The core module produces hot, high-pressure gases to drive the engine accessories
The core module produces hot, high pressure gases to rotate the rear compressor and fan drive turbine
What are the 4 major subsections of the core module?
Compressor Intermediate case, rear compressor, diffuser case and rear compressor drive turbine
Compressor intermediate case, rear compressor, diffuser case and fan drive turbine
Compressor intermediate case, rear compressor and rear compressor drive turbine
Rear compressor, rear compressor drive turbine and diffuser case
The fan turbine inlet temperature probes extend into which stage turbine vanes
1st
2nd
3rd
4th
What is the function of the radial gutters found in the flameholder?
The radial gutters direct the hot gases out of the exhaust
The radial gutters mix the hot core gases with the cooler fan air.
The radial gutters act as a structural support to the flameholder
All of the above
What is the functions of the reduction gearbox?
Provides a mounting flange for the main fuel control
Provides a speed reduction of 52% between the engine driven main gearbox and the main fuel pump
It houses the No 2 and 3 bearing scavenge pump
All of the above
What is the primary purpose of the engine mounted generator?
Provides power to the IBOX
Provides power to the DEEC and IBOX
Provides power to the aircraft emergency power unit.
Provides power to the deec ignition system and ps2 probe heater
What is the purpose of the anti-ice system?
Prevent ice accumulation on the ps2 probe
Prevent ice accumulation on the engine inlet
Prevent ice accumulation on the aircraft intake duct
Removal of ice on the engine intake
How is the anti ice valve control
By the means of electrical signals from the DEEC
By the means of electrical signals from the airframe
By means of electrical signals from the DEEC and airframe
By means of electrical signals from the engine mounted generator
The Tt2 probes provides engine total temperature signal to which component?
IBOX
MFC
Cockpit indicator
DEEC
What is one of the purpose of the quad N1 sensor?
Provides electrical speed signal to the DEEC
Provides hydromechanical speed signal to the MFC
provides electrical speed signal to the MFC
Provides hydromechanical speed signal to the DEEC
The FTIT probes provide temperature signals to the ___.
DEEC and PHM
DEEC and MFC
DEEC only
IBOX only
Which turbine stage are the FTIT probes located?
1ST
2ND
3RD
4TH
The secondary Tt2 probes provides ___.
Engine inlet temperature signal to the DEEC
secondary engine inlet temperature to the DEEC
Engine inlet temperature signal to the MFC
secondary engine inet temperature signal to the MFC
What is the function of the Ps2 probe?
Sample air temperature and send the information to the DEEC
Sample static air pressure and send the information to the DEEC
Sample both air pressure and temperature and send the information to the DEEC.
Guide the airflow flowing into the engine
When will the dual solenoid-actuated anti-ice valve be closed (anti-ice inhabited)?
When either or both solenoids receives electrical power
When both solenoids receive electrical power
When solenoids did not receive electrical power
When either or both solenoids did not receive electrical power
When will DEEC allows anti-ice operation?
When altitude is less than 30,000ft, antiice air temperature is less than 759 deg F and tt2 is less than 30 deg F.
When altitude is less than 30,000ft, anti ice air temperature is less than 750 deg F and tt2 is less than 60 deg F ()
When altitude is less than 35,000ft, anti-ice air temperature is less than 750 deg F and tt2 is less than 30 deg F
When altitude is less than 35,000ft, anti-ice air temperature is less than 750 deg F and tt2 is less than 60 deg F
Which of the following statements is true pertaining to anti-ice system?
The anti ice valve is controlled by a combination of airframe and EDU electrical signals supplied to the anti ice valve solenoids
The anti-ice valve is controlled by electrical signals from the airframe mounted ice detector probe supplied to the anti-ice valve
The anti ice valve is controlled by electrical signals from the DEEC.
The anti-ice valve is controlled by a combination of airframe and DEEC electrical signals supplied to the anti ice valve solenoids.
How is main ignition scheduled?
By the DEEC
As a function of PLA
As a function of fan rotor speed, N1
As a function of core rotor speed, N2
The F100-PW-299 lubrication system engine consists of 3 subsystem. What are they?
Pressure scavenge and vent
Pressure, scavenge and breather
Scavenge, vent and breather
Pressure, vent and breather
In the lubrication system, the boost oil pressure is supplied to which main bearings?
1,4,5
1,2,3
1,3,5
3,4,5
What is the purpose of the scavenge system?
Return the cold oil to the oil tank
Reduced the heat of the oil
Vents breather air Overboard
Returns oil and breather air to the oil tank
Which subsystem regulates pressure of the air that is introduced into the lubrication system through the bearing compartment.
Pressure subsystem
Breather subsystem
Scavenge subsystem
Vent subsystem
What is the purpose of the oil pressure subsystem?
Supplies clean, cool, pressurized oil to the main bearings and gears for lubrication and cooling.
Removes air from the oil and breather lines
Prevents excessive pressure build-up and pump cavitation
Collects oil from the gearbox and returns the oil to the oil tank
What is the usable capacity of the engine oil tank?
2.1 gallon
3.1 gallon
4.1 gallon
5.1 gallon
How many magnetic chip detectors are there in the lubrication system of the F100-PW-299 engine?
2
3
4
5
What is the purpose of the breather pressurizing valve?
Maintains correct breather pressure in the oil tank, No 2-3 bearing compartment and gearbox
Maintains correct scavenge pressure in the oil tank, No 2-3 bearing compartment and gearbox
Maintains correct breather pressure in the oil tank, No.1 to 5 bearings compartments and gearbox
Maintains correct breather pressure in the oil tank and No2-3 bearing compartment
What is the purpose of the carbon seals?
Prevent oil leakage into the breather system
Prevent oil leakage from the bearing compartments
Prevent air from leaking out of the bearing compartments
Prevent air from entering the bearing compartments
What is the purpose of the anti-siphon line
Prevents oil from siphoning into the No4 and 5 bearing compartments after shutdown by introducing breather air into the boost pressure line after shutdown
Prevents oil from siphoning into the No4 bearing compartment after shutdown by introducing breather air into the boost pressure line after shutdown.
Prevents air from siphoning into the no4 and 5 bearing compartments after shutdown by introducing breather air into the boost pressure line after shutdown
Prevents air from siphoning into the No4 and 5 bearing compartments after shutdown by means of a check valve between the pressure line and the breather lines
How is the oil cool during engine operation?
Air oil cooler
Fuel oil cooler
By air oil cooler and fuel oil cooler
Not cool
An oil pressure transmitter measures ____.
Differential pressure between main oil pressure and breather air pressure
Differential pressure between main oil pressure and scavenge air pressure
Differential pressure between scavenge air pressure and breather air pressure
Main oil pressure
Why does No. 1,4 and 5 roller bearings require higher oil pressure?
Due to higher breather air pressure within the bearing compartments
Due to lower breather air pressure within the bearing compartments
Due to higher scavenge pressure within the bearing compartments
Due to lower scavenge pressure within the bearing compartments
In primary mode, how do the DEEC controls engine operation?
The DEEC controls engine operation through the use of electrical signals from the EDU.
The DEEC controls engine operation through the use of electrical signals from the EDU and aircraft inputs.
The DEEC controls engine operation by scheduling control system compartments, through the use electrohydraulic servovalves, solenoids, switches and resolvers.
The DEEC controls engine operation through the use of cams, linkages and other mechanical/hydraulic devices based on throttle position and engine inputs
In secondary mode, the main fuel control schedules fuel flow as a function of:
PLA,Ps2, tt2
Exhaust nozzle position
RCVV position
CIVV position
The DEEC system controls thrust and stall margin by scheduling how many variables?
5
6
7
8
Why does the DEEC schedule CIVVs, RCVVs and compressor bleed?
To increase fuel flow and fan speed
To increase compressor efficiency and stall margin
To increase exhaust nozzle area
To lower rear compressor speed
What component controls the engine in primary mode?
Main fuel control
DEEC
Augmentor fuel control
Primary control
What components are used by the DEEC to position actuators?
Solenoids and stepper motors
EHVs and cams
EHVs and solenoids
Solenoids and electromechanical servo valves
What engine pressures does the DEEC use to control exhaust nozzle area?
Pt2 and pb
Ps3 and pt6m
Pt2 and pt6m
Pt2 and ps3
The mach number(Mn) signal is primarily used by the DEEC to bias engine start, idle fuel flow and ___.
Engine acceleration
Fuel flow scheduling
CIVV scheduling
RCVV scheduling
What is the purpose of idle area reset?
Increase thrust during takeoff and for high speed taxiing
Increase acceleration time for fast takeoff
Increase acceleration for short takeoff
Reduces thrust during landing and for safe taxi speed
What is the purpose of the PLA rate limiter?
To prevent uncontrolled PLA input to the MFC during SEC mode operation
To prevent uncontrolled PLA input to the MFC during PRI mode operation
To prevent uncontrolled PLA input to the MFC during PRI and SEC mode operation
To prevent uncontrolled PLA input to the MFC during PRI mode operation at 30,000 feet and below
The exhaust nozzle is variable to control____.
Engine thrust and fan stall margin
Engine thrust and fuel flow
Engine thrust and fan speed
Engine thrust and core speed
The transfer valve that allows transfer from primary to secondary mode is located in the ____.
Engine diagnostic unit
DEEC
MFC
Transfer Solenoid
The aircraft throttle is connected from the airframe to the ____.
EDU
DEEC
AFC
MFC
What is the position of the exhaust nozzle during SEC mode?
Fully closed
Fully opened
82% to 84%
10% to 20%
The deec engine provides high accuracy and reliability with minimum size and weight. One of its feature is____.
Unrestricted PLA movement
Unrestricted PLA movement in Primary mode only
Restricted PLA movement at augmentation when the engine is at secondary mode
Restricted throttle movement at 20,000 feet above sea-level
Which of the following fuel flow sequence is correct?
Aircraft - Main Fuel Pump - Main Fuel Control - Fuel Oil Cooler - Pressurizing and Dump Valve - Fuel Nozzles
Aircraft - Main Fuel Pump - Main Fuel Control - Pressurizing and Dump Valve - Fuel Oil Cooler - Fuel Nozzles
Aircraft - Main Fuel Pump - Fuel Oil Cooler - Main Fuel Control - Pressurizing and Dump Valve - Fuel Nozzles
Aircraft - Main Fuel Control - Main Fuel Pump - Fuel Oil Cooler - Pressurizing and Dump Valve - Fuel Nozzles
How many fuel nozzles can be found on the diffuser case?
16
18
22
24
During engine shutdown, why is there no fuel dump from the engine
There is no P&D valve
Fuel bypass back to the aircraft
The dump section of the P&D valve is capped
The P&D valve is stuck closed
How many staged and unstaged fuel nozzles are there in the F100-PW-299 engine?
10 staged, 14 unstaged
12 staged, 12 unstaged
14 staged, 10 unstaged
10 staged, 10 unstaged
Which of the following statements is true?
The unstaged fuel nozzles introduce more fuel as compared to the staged nozzle
The stage fuel nozzles introduce more fuel as compared to the unstaged nozzles
The staged and unstaged fuel nozzles introduce the same amount of fuel
None of the above
What is the purpose of having 12 unstaged and 12 staged fuel nozzles in the engine? Choose the most correct answer.
For fuel efficiency
To prevent engine light off stall
To improve the air start envelope without increasing wfgg which could cause a light off stall due to excessive back pressure on the compressor
To increase the fuel flow during starting
What design is configured in the fuel nozzles to eliminate fuel surge?
Regulator valve
Damper
Pressurizing valve
Scheduling valve
The compressor bleed actuating mechanism is actuated by ___?
Fuel pressure from MFGP
fuel pressure from MFC
Fuel pressure from DEEC
Oil pressure from gearbox
what is the purpose of the fuel oil cooler?
cools engine oil before it goes to gearbox and bearings
cools fuel before it goes to the fuel nozzles
cools engine oil before it goes back to the oil tank
cools fuel before it goes to the MFC
The main fuel pump delivers fuel to the ___.
MFC and AFC
MFC and augmentor fuel pump
mfc, rcvv actuator and augmentor fuel pump
mfc, rcvv actuators, civv actuators and augmentor fuel pump
The total range of travel for the Compressor Inlet Variable Vanes is
-7 degrees (fully cambered) to + 21 degrees (fully axial)
-10 degrees (fully cambered) to +18 degrees (fully axial)
-14 degrees (fully cambered) to +14 degrees (fully axial)
-21 degrees(fully cambered) to +7 degrees (fully axial)
The total range of the Rear Compressor Variable Vanes is
-34 degrees (fully cambered) to +7.5 degrees (fully axial)
-7.5 degrees (fully cambered) to +34 degrees (fully axial)
-34 degrees (fully cambered) to +34 degrees (fully axial)
-7.5 degrees (fully cambered) to +7.5 degrees (fully axial)
which of the following statements is true?
During primary mode engine starts, the compressor bleed unloads the high compressor by bleeding air from the 7th stage of compression.
During secondary mode engine starts, the compressor bleed unloads the high compressor by bleeding air from the 7th stage of compression.
During primary and secondary mode engine starts, the compressor bleed unloads the high compressor by bleeding air from the 7th stage of compression.
During emergency, i.e air start, the compressor bleed unloads the high compressor by bleeding air from the 7th stage of compression.
which of the following is used when stop-to-stop actuation is required without variable positioning between the stops?
Electrohydraulic servo valves
Switch
solenoid
resolver
which of the following statements is true for the Augmentor Duct and Nozzle Module?
the nozzle is opened and closed by a drive system that incorporates two primary drive cables, one primary nozzle actuator, five secondary drive cables, four secondary nozzle actuators and one synchronizing ring
the nozzle is opened and closed by a drive system that incorporates one primary drive cables, one primary nozzle actuator, four secondary drive cables, four secondary nozzle actuators and one synchronizing ring
the nozzle is opened and closed by means of the synchronising ring
the nozzle is opened and closed by a drive system that incorporates two primary drive cables, one primary nozzle actuator, five secondary drive cables, four secondary nozzle actuators
what drives the exhaust nozzle position transmitter?
Main fuel Control
primary actuator
secondary actuator
CENC
what are the components that operate the exhaust nozzle control system?
CENC, external segments and 5 actuators
CENC, synchronizing ring, primary and secondary drive cables and actuators
CENC air pressure regulator, bell cranks, primary and secondary drive cables and actuators
ENPT, CENC, primary and secondary drive cables and actuators
which compressor stage air does the CENC utilises to change the exhaust nozzle control system?
13th stage air
7th stage air
aircraft
Pt6m
what controls the compressor bleed system during SEC operation?
CB is inoperative during SEC operation
AFC
DEEC
MFC
what position is the exhaust nozzle designed to fail in if the augmentor primary drive cables are sheared?
closed position
position when failure occur
opened position
position depending on the throttle setting
the augmentor segment manifolds consists of ___ rings and ___ segments.
5 rings and 5 segments
11 rings and 7 segments
7 rings and 7 segments
7 rings and 11 segment
what is the position of the CIVV vanes during secondary mode?
fully axial
fully cambered
varies with N1 rpm
varies with N2 rpm
what is the purpose of opening the compressor bleed strap during engine start?
to decrease the rear compressor stall margin and unload the rear compressor for a faster start
to increase the rear compressor stall margin and unload the rear compressor for a faster start
to decrease the rear compressor stall margin and increase the compression ratio a for faster start
to increase the rear compressor stall margin and increase the compression ratio for a faster start
where is the compressor bleed strap located?
around the 6th stage of the rear compressor
around the 7th stage of the rear compressor
around the 8th stage of the rear compressor
around the 9th stage of the rear compressor
the DEEC schedules the compressor bleed open on start based on ___?
N1 and N2
N1 and Tt2
N2 and Tt2
N2 and EPR
At which stage of the engine operation does the compressor bleed system unloads the high compressor?
Intermediate power settings
engine augmentation
engine start
engine ground operation
which is one of the purpose of the flameholder?
it allows the spread of flames during augmentor initiation
it reduces the velocity of the gases so that the flame stability is maintained during augmentation
it mixes the hot gases and fan air for smooth performance
all of the above
___ is a pilot ring in the form of a channel that allows spread of flame during augmentor initiation
spray manifold assembly
turbine exhaust cone
flameholder
augmentor synchronizing ring
which of the following is TRUE?
segment 2 produces a pilot flame for the augmentor initiation sequence
radial gutters of the flameholder branch inward and outward to mix the gases
the flameholder increases the velocity of gases to maintain flame stability
the flameholder mixed hot gases and fan air during augmentation only
which component controls augmentor fuel flow in secondary mode?
DEEC
AFC
augmentation is not possible in SEC MODE
MFC
Which component supplies the AFC with servo pressure?
MFC
AFPC
MFP
CENC
The speed of the augmentor fuel pump is controlled by the
bypass valve
main fuel control
electronic engine control
augmentor fuel pump controller
which segment produces a pilot flame for the remaining segments
segment 1
segment 2
segment 3
segment 4
which equipment is used to measure the augmentor system fuel pressure
CEDS
PDA
Pressure Test Set
Engine warning test set
what is the device that converts electrical signal from the DEEC to hydraulic pressure?
EHV
Resolver
Cam
Diagnostic switch
what is the purpose of performance data?
to monitor/trend engine performance
to monitor engine cycle limits
to determine the life of the core module
to determine the relationship between engine cycle and engine operating time
which of the following conditions will trigger recording of a single transient data?
whenever an engine event is detected
whenever a system fault is detected
whenever an internal DEEC fault is detected
whenever an engine event is detected and an internal DEEC fault if detected.
what is the secondary mode of the engine operation?
it is the fail safe mode of engine operation which is controlled by the MFC
it is the fail safe mode of engine operation which is controlled by the DEEC
it is the standard mode of engine operation which is controlled by the MFC
it is the standard mode of engine operation which is controlled by the DEEC
which of the following is a feature of the DEEC?
Unrestricted throttle movement throughout the flight envelope
unrestricted throttle movement below 40,000 feet
unrestricted throttle movement below Mach 1.8
unrestricted throttle movement below 40,000 feet and Mach 1.8
how does the engine monitoring system(EMS) components communicate with each other?
through a UART channel
through EHVs and resolvers
through Resolver Equivalent Degrees (REDs) format
through Resolver Equivalent Degrees(REDs) channel
which series of fault code is for event fault code?
1000
2000
3000
4000
how does DEEC relinquishes control of the engine to the MFC?
by positioning the mode switches within the MFC
by positioning the transfer valve within the MFC
by positioning the metering valve EHV within the MFC
by positioning the resolver within the MFC
what series fault code indicated an engine performance related fault?
3000
4000
5000
6000
what series fault code indicates an internal DEEC malfunction?
1000
2000
3000
4000
What series fault codes are system faults?
1000
2000
3000
4000
What series fault codes are advisory faults?
1000
3000
5000
7000
What EMS data aids maintenance personnel in troubleshooting?
EOT
Fault codes
Range checks
Transducer signals
What series fault codes are event faults?
1000
2000
3000
4000
How does DEEC controls engine operation
by sending electrical signals in electrohydraulic servo valves (EHVs) or solenoids
by sending electrical signals in electrohydraulic servo valves (EHVs) or resolvers
by sending electrical signals in electrohydraulic servo valves (EHVs)
by sending electrical signals to resolvers
The engine starting system provides main engine starting capability up to which altitude?
18,000ft
20,000ft
22,000ft
24,000ft
Under which of the following conditions will the DESSC controller shut down the JFS?
Controller fails to detect 90% speed within 30 seconds after start is initiated
Controller detects overspeed in excess of 110% JFS speed
Controller detects underspeed of 90% after JFS has exceeded 90% speed
All of the above
How does DESSC distinguish between a ground start and an air start?
ambient pressure
ambient temperature
landing gear handle
weight on wheel switch
After main engine start is accomplished, how is the JFS gear train disengaged from the ADG gear train?
servo clutch valve
torque converter
overrunning clutch
hydraulic start motor
When the engine has reached self sustaining speed during engine ground run, how is the JFS shutdown?
ground runner has to manually switch off the JFS
the JFS start switch automatically snaps to the OFF position and the run light goes off
the JFS start switch automatically snaps to the OFF position and the run light remains on
the JFS will continue running until engine reaches idle speed
During ESS operation in flight, which logic is disabled?
the logic that automatically shuts down the JFS when engine is running is lock up
JFS will be shut down once engine reaches self sustaining speed
JFS overtemp is not allowed to occur
Start 2 is used
When is the Max Fuel valve energise to open?
90% JFS speed
90% JFS speed plus one second
70% JFS speed plus one second
100% JFS speed
Which equipment is used to troubleshoot the engine starting system?
Ignition test set
PDA
CEDS
EAU
At what JFS speed will the JFS doors close during the ground start?
5%
10%
15%
20%
Where is the JFS speed sensor located?
Contain within the ADG
Mounted on the ADG adjacent to the ESS FCU
Mounted on upper right hand side of ADG above System A hydraulic pump
Mounted on JFS
The JFS door will be closed at _ JFS speed in flight
5%
20%
30%
40%
Diaphragms or bellows located in the splined section and center section of the PTO shaft allow for up to __ of angular deflection across each bellow
1 degree
2 degrees
3 degrees
4 degrees
When is the Start Fuel valve energise to open?
5% JFS speed
12% JFS speed
70% JFS speed
90% JFS speed
When is the Main Fuel valve energise to open?
5% JFS speed
12% JFS speed
70% JFS speed
90% JFS speed
When is the JFS Ignition Exciter de-energised?
5% JFS speed
12% JFS speed
70% JFS speed
90% JFS speed
The solenoid deprime value operates during
start 2 only
start 2 on ground only
start 2 in the air only
start 1 only
How many overrunning clutches (ORC) are there in the ADG?
1
2
3
4
What is the purpose of the delay valve in the hydraulic system of the ESS?
To prevent a sudden temperature increase in the hydraulic system
To prevent a sudden pressure spike from damaging the hydraulic start motor
To convert hydraulic pressure into mechanical torque for the starting sequence
To step-up an input torque for more efficient starting
JFS run light is seen flashing when aircraft is electrically powered up. It means _
aircraft battery power is low
JFS shots are due
there is a malfunction in the ESS electrical circuitry
JFS is ready for start
When a main engine start is accomplished, DESSC shuts down the starting sequence (ground start) based on
JFS speed
PTO speed
N2 speed
N1 speed
When will the Start Fuel Valve be de-energised during the JFS starting sequence?
90% JFS speed
90% PTO speed
70% JFS speed
70% PTO speed
Which of the following when energise, will increase the JFS rpm to 105% JFS speed?
Max Fuel Valve
Fuel Bias Valve
Start Fuel Valve
Main Fuel Valve
Which equipment is used for downloading of engine start data from the DESSC?
PDA
CEDS
CETS
PTS
Hydraulic Start Motor will dis-engages at _% JFS speed
5
12
70
105
What is the purpose of Hydraulic Start Motor in the engine starting system
Provides rotational power necessary to accelerate the JFS to starting speed
Provides energy to start the engine
Provides power to drives the accessory drive gearbox
Provides the aircraft with hydraulic pressure
The F-16 engine starting system can be powered up using _
Aircraft Battery
Engine Generator
Aircraft Emergency Generator
Hydraulic Accumulator
Which test set is used to test JFS ignition system?
CEDS
CETS
PDA
Ignition Test Set
JFS run light will illuminate at _
5% JFS speed
12% JFS speed
70% JFS speed
90% JFS speed + 1 sec
Jet Fuel Starter consists of:
1. a single-stage centrifugal flow compressor
2. a single-stage radial inflow turbine
3. an annular atomizing combustor
1. a 3-stage axial flow compressor
2. a 3-stage axial flow turbine
3. an annular atomizing combustor
1. a single-stage centrifugal flow compressor
2. a single-stage radial inflow turbine
3. a can type combustor
1. a single-stage centrifugal flow compressor
2. a single-stage radial inflow turbine
3. a can-annular type combustor
Standard operating condition for the JFS is _
unlimited
ground level only
ground level to 20,000ft altitude
unlimited for start 2
During JFS prime and initial fuel leak check _
the PTO speed sensor is disconnected
the JFS speed sensor is disconnected
the DESSC is disconnected
the ignition is disabled
At 90% plus one second, the following events will take place __
JFS run light illuminates, Servo Clutch Valve regulates and Max Fuel Valve opens
JFS run light illuminates, Servo Clutch Valve regulates
JFS run light illuminates, Max Fuel Valve opens
JFS run light illuminates, Servo Clutch Valve regulates and Max Fuel Valve closes
Which of the following statements is incorrect?
JFS run light comes on at 90% JFS speed plus 1 second
Servo Clutch valve engage at 90% JFS speed plus 1 second
JFS shutdown at 50% N2 RPM
Start Fuel Valve de-energise to close at 50% N2 RPM
SNIF-16CJ-2-80FI-00-21 is used for _
ESS component removal/installation instruction
ESS component check out only
ESS parts breakdown listing
ESS troubleshooting
Where is ADG speed sensor located?
Contain within the ADG
Mounted on the ADG adjacent to the ESS FCU
Mounted on upper right side of ADG above System A hydraulic pump
Mounted on Standby Generator CSD
What will happen if the JFS does not attain 90% JFS speed in 30 seconds?
Fuel Bias Valve will be activated to increase the JFS RPM to 105%
DESSC will attempt another 30 seconds before flagging out a fault
DESSC will shut down the JFS
Nothing will happen, JFS will continue operation
Which of the following statements is true?
The Fuel Bias Valve operates only during ground starts
The Fuel Bias Valve operates only during air starts
The Fuel Bias Valve is not used during engine starts
The Fuel Bias Valve operates during ground and air starts
What is the location of DESSC for F-16 CD aircraft?
Behind panel 3302
Behind panel 3303
Behind panel 3304
Behind panel 7019
What is the location of DESCC for F-16 D+ aircraft?
Behind panel 3302
Behind panel 3303
Behind panel 3304
Behind panel 7019
Hydraulic energy from JFS accumulators are converted to rotary power through
Hydraulic Start Motor
Delay Valve
JFS
Servo Clutch Valve
JFS gets its ignition power from
Main power bus
Standby power Bus
Battery Bus
Auxillary power bus
What are the positions of JFS start switch?
Start 1 / Off
Start 1 / Off / Start 2
Start 1 / Start 2 / Start 3 / Off
Start 1 / Start 2
What are the conditions that warrant selection of Start 2 during JFS start?
Very cold ambient temperature
Very hot ambient temperature
Very cold and hot ambient temperature
1st start of the day
When the JFS has accelerated the engine, how does the main engine be started?
By depressing an engine start button beside the JFS start switch
Advance throttle from Cut Off to MIL position
No action required. Engine starting will be automatic everytime JFS comes on speed
Advance throttle from Cut Off to Idle position
What is the purpose of JFS door switch?
It allow electrical power to be routed to the Fuel Bias Valve after JFS exhaust door is fully opened
It allow electrical power to be routed to the Lube De-prime valve after JFS exhaust door is fully opened
It allow electrical power to be routed to the Servo Clutch Valve after JFS exhaust door is fully opened
It allow electrical power to be routed to the Fuel Shut Off Valve after JFS exhaust door is fully opened
