The thrust reverser may be deployed.
In flight when the thrust lever is at idle
When either radio altimeter is sensing less than 10 feet altitude
When the air/ground safety sensor is in the ground mode
The Fuel Flow Transmitter is located,
Insıde the HMU
Between the Fırst and Second Stage of the engine driven fuel pump
Downstream of the HPSOV
Which oil is used in the CFM56-7B engines?
Mobil Jet 1
Mobil Jet 2
Aeroshell 300
Which of the following statement is not correct when the starts lever is moved to the CUTOFF detent position?
Integrated drive generator (IDG) manual disconnect circut receives arm signal
The fuel control panel logic receives signal and monitors the fuel spar valve position and the engine START LEVER switch position for operation of the Spar Valve Closed light
The EEC receives reset signal which allows chanels A and B to alternate between active and standby modes of operation
What is required for the EEC to computer a commanded N1 Speed?
Airplane bleed data, or the amaunt of bleed air the airplane takes from the engine comes from the display electronic units (DEUs)
T12 for current ambient temparature When the airplane has been in flight for 5 minutes the EEC uses T12 and TAT (from the ADIRUs)
Pt for ambient total pressure is supplied by the air data İnertial reference units (ADIRUs)
Which below, the VSV the VBV’s are OPEN?
Take – off
Thrust Reverse
Ground ıdle
From where te thrust reverse can be de-actived hydraulically?
hydraulic control unit
control valve module
engine accessory unit
What is the purpose of transient beled valve?
it increases the stall magrin of high LPC
It helps the engine to reach the idle RPM during engine stall
Helps to prevent stall of high pressure compressor (HPC) during ENG Start and acceleration.
What is it posible to service the oil system?
between 5 to 30 min.
between 10 to 60 min
between 10 to 30 min
During engine running the gray shaded area on N2 goes below….
the eng fail message come on
the box around the digital display changes tor ed
automatic control of the engine should be lost
What is the fail-safe position of FMV (fuel metering valve)?
partially open
max.open
fully closed.
Which one below is not used to energize the eec?
start switch-GRD position
start switch-CON position
start switch-FLT position
What type of bearing are used in NO:3 position
2 roll type
2 ball type
1 ball type, 1 roller type
Which of the following statements is not correct fort he engine bearing?
the NO:5 bearing supports the turbine rotor aft end inside the turbine frame and takes the radial loads.
the NO:1 ball bearing is a thrust bearing which carries hte axial loads generated by LP rotor system
the NO:3 ball bearing is a thrust bearing which carries the axial loads generated by the low pressure rotor system to the frame.
From where te thrust reverse can be de-actived hydraulicaly?
Hydraulic control unit
Control valve module
What is the maximum capacity of oil tank?
approximately 21 quarts
approximately 23 quarts
approximately 25 quarts
When is it possible to service the oil system?
between 10 to 60 min.
between 10 to 30 min.
What do ignation exciters do and how do they operate?
there are 2 ignition exciters attached on the combustion chamber and they convert 28 V DC current to 115 V AC so provide the fuel to be ignited.
these components attached on the generator phase lines sense resistance difference between phases.
it makes igniter plugs active by converting 115 V AC to high voltage
Cut off control of the High Pressure Fuel Shutoff Valve is provided by..
EEC
start lewer or fire handle
DEU s
Which station of the engine does the EGT sensors are ....
STA 25
STA 49.5
STA 30
"Which of the following statement is not correct for the transient bleed valve (TBV) operation?"
the EEC uses N2 speed and T25 data to control the transient bleed valve(TBV)
the high pressure compressor (HPC) 9 th stage bleed air that goes into the stage 1 low pressure turbine (LPT) nozzles through the TBV during engine starting
the EEC sends a no dispatch if control current to the TBV EHSV is out of range and EEC in dual channel operation
Which of the following statement is not correct for the engine nozzles?
silver band nozzles are instaled in position 7/8 and 14/15.this nozzle higher fuel flow supplies a stronger spray
"blue band nozzles are the standart nozzle.they are installed in all positions excluding position 7/8 and 14/15"
silver band nozzle are the standart nozzle.they are installed in all positions including position 7/8 and 14/15
In which condition below EEC does not energise?
eng start switch in GRD position
eng start switch in FLT position
eng start switch in CON position
At which speed the associated ENGINE START lever has to be moving the IDLE when performing a wet motoring?
For a wet motoring the ENGİNE START lever is normally move the IDLE at the 20 % of N1
For a wet motoring the ENGİNE START lever is normally move the IDLE at the 20 %N2
As soon as setting the ENGINE START rotary selector to the GRD position
What is the purpose of LPT?
LPT is used to turn the HPC rotor and the accessory drive
LPT is used to turn the fan and booster rotor
LPT is used to drive the oil and fuel pumps
Which sensors is located on inlet cowl?
T12
P2/T2
T25
Which of the following statement is not correct for the amber REVERSER light?
The REVERSER light illuminates when the thrust reverser is commanded to deploy and extinguishes when itis fully deployed.
The REVERSER light illuminates when in case of malfunction isolation valve or directional control valve
The REVERSER light illuminates when the left and right translating sleeve position signal ( from the LVDT ) are not in range
Which of the following statement is not correct for the engine thrust control?
interlock pawl lockout mechanism prevents simultaneous actuation of the forward and reverse thrust levers
when the forward thrust lewer is not at idle the pawl locks the reverse thrust lever at the STOW position
the reverse thrust iterlock solenoid is energized when both T/R sleeves are deployed lower than 60%
What is the function of the resolvers on the thrust lever section(ENGINE CONTROL SYSTEM)?
To send Thrust lever position indication to secondary engine display
To send thrust lever angle as an analog input to EEC
To send thrust lever failure information to DEU
What is the purpose of vortex control device?
to provide smooth air flow for the wing
to provide extra electrical power to the EEC alternator
to provide electrical power to AC transfer bus 1 and 2 on emergency conditions
What rotors are located on the N2 shaft?
Fan booster and HPT rotors
Fan and HPC rotors
HPC and HPT rotors
The hydro mechanical unit ( HMU ) .....
transforms electrical signals from engine sensors into hydraulic pressure
transforms electrical signals from the EEC into hydraulic pressure
sends hydraulic pressures back to the EEC as feedback for closed loop control
Which filter in the Lubrication System has an indication in flight deck?
Scavenge Oil Filter
Supply Oil Filter
3 of the chip detectors
What are the characteristic features of CMF56-7B engine?
it is a double shafted turbo prob jet engine with axial flow
it is double shafted turbo fan engine with axial flow
it is a double shafted jet engine with radial flow
How many LPT stages on the engine?
3
4
5
The CMF56-7B N1 compressor section cosist of
a single stage fan and nine stage booster sections
a single stage fan and two stage booster sections
a single stage fan and three stage booster sections
Which of the following statement is correct for the VSV operation?
The EEC sends a dispatch signal if control current to the VSV EHSV is out of range and EEC in single channel operation
The EEC uses the LVDTs to monitor the position of the VSV actuators.Right VSV actuators LVDT sends an electrical signal to channel A of the EEC.The left actuators LVDT sends an electrical signal to channel B
The EEC sends a no dispatch signal to the DEUs if VSVs is in the correct position but VSV position signal is out of range on active EEC channel
Which of the following is not correct for the combustion chamber used CMF56-7B engine?
16 fuel nozzles with blue color band are installed around the combustion chamber case
the surface of the combustion chamber receives cooling air from the LPC discharge air flow
the combustion section is between the high pressure compressor ( HPC ) and the low pressure turbine ( LPT )
Which statement is true concerning the alternate EEC mode?
if a fault occurs in the normal mode control is automatically transferred to the soft alternate mode
if the hard alternate mod the EEC used N2 as the controlling parameter
engine thrust limit protection is provided in both the normal and hard alternate modes
What is not the reason of doing preservation & de-preservation of engine
to heating of non operating engine
to prevent corrosion
to prevent unwanted metarials in the powerplant
How is the wet motoring sequence aborted?
By moving the applicable start lever to ''CUTOFF'' position when N' reaches 55%. Continue to motor the engine for 60 seconds to purge the engine of the residual fuel before set the applicable Start Switch to the OFF position
By moving the applicable start lever to ''CUTOFF'' position continue to motor engine for 60 seconds to purge the engine of the residual fuel before set the applicable Start Switch to the ''OFF'' position
By setting the applicable Start Switch to the ''OFF'' position.Continue to motor the engine for 60 seconds to purge the engine of the residual fuel before put the applicable Start lever to the ''CUTOFF'' position
Which statement in below is true about the anti-ice system of spinner cone?
it is heated by using 5th stage air
it is heated by using 9th stage air
there is no heating for spinner cone
Which of the following statement is not correct when you carry ..... bite test from the Engine Accessory Unit?
The green NO FAULTS DETECTED light comes on if there are no faults found
The fault memory will also erase when the T/R operates 5 times with faults
the EAU FAULT light comes on if there is an internal EAU failure
Which preservation procedure is correct for an On-Wing ......
it can be done for not more than 10 days-30 days-90days
?
??
EEC is normally electrically feed from?
EEC electrical gear box located on the dual-channel AC transfer bus-feed.
Start AC transfer bus-feed during the EEC, 12-15% N2 cycle begins when the EEC alternator feeding
Start EEC fed during the AC Transfer Bus 1, Bus 2 to normally fed AC transfer
Which of the following failure / malfunction warning not illuminatıon cockpit ENGINE CONTROL?
HPTACC
LPTACC
VSV, VBV, TBV
Red color digital display box somewhere N2 motor standstill following, which causes dizziness?
N2 at any time during the flight idle speed has dropped below the value.
N2 is a fault indication system.
Exceedance of a N2 (N2 Max value is exceeded] has status
Reverse thrust solenoid interlock prevents what?
Thrust reverser'larin, aircraft or on the ground 10 feet, until it falls to the ground prevents the opening of.
Translating sleeve until it is fully opened, thrust prevents the opening of reverser'larin.
Both thrust reverser translating sleeves prevents the admission of gas until 60% open position.
"REV" green light?
Full deployed
Stow
Disagree
EGT Thermocouples station?
24
49,5
32
EGT Thermocouple quantity?
8
2
Name Plate includes?
Model, N1 trim, ByPass Ratio
Oil type
Flight Cycle
When the oil supply filter clogged?
Oil filter bypass light illuminates
Red pop-out indicator comes out
No action required
"LOW OIL PRESS" and "BYPASS" light come?
Flash for 10 seconds then continously
Only flush
Only illuminate
Sılver band nozzles?
Silver band is normal nozzles
Silver band have a higher fuel flow
Silver band same as blue band
Interlock Selenoid energized?
greater than %60
greater than %20
greater than %50
Which one prevents the operation of the FWD thrust lever and the T/R lever at the same time?
Translating sleeve
Locking actuator
Lock Pawl mechanism
HMU controlled by?
Electrically by EEC
Automatically
Mechanically by EEC
HMU control the VSV ?
Hydraulically
Pneumatically
Fuel pressure
How much flight leg recorded AEVMU?
16
If the starter work 2 minutes?
5 second wait
10 second wait
30 second wait
Igniter cable cooling?
Low pressure compressor discharge air
Not cooling
Cooled ambient air
Upper display unit shows?
Maps
N1-EGT
Oil Quantity
IF the fire handle pulled?
Spar valve and ENG valve close
Outflow valve close
Overboard valve close
Which ENG START SWITCH positions EEC not energized?
GRD
FLT
CON
TBV prevents?
Prevent on HPC stall during eng start and acceleration
Prevent surge
Prevent wet start
Which statement is not wrong for ignition exciters?
LH and RH exciters feed from 115v ac transfer bus
Both exciters feed from STBY BUS
LH exciter 115v ac transfer bus, RH exciter 115 v ac STBY Bus
Preservation applied prevent for?
For damage
Corrosion
Lightning strike
Anti-Leakage valve function?
Monitors leakage
Prevent oil leakage during removel of a component of the oil distrubition sys
Overboard through oil
T3 temperature sensor works?
Single elements
Two elements One for CHN a one for CHN B
One channel
Engine serial number
ID Plug contain
Write in AMM
We chance on the CDU
Engine oil cooled by?
Fuel
Hydraulic
Water
Ignition exciter?
115v to high voltage
28v to 115
115v to 28v
Engine power
Pound
LBS
Kgs
AEVM signal conditioner?
Change the 115v ac to 24v dc
28v dc to 115v
115v ac to 28v dc
T/R feeds from hyraulic systems?
Hyd. System B only
Hyd. System A only
LH T/R Sys A RH T/R Sys B
LPC how many stages?
3 stages
1 fan + 3 stages
1 stage
When the ENG FAIL Light comes on?
Engine fire
During stall
Both engine speeds on at above idle
EGT start red line?
725 C
500 C
900 C
EGT Max Continous ?
925 C
EGT redline?
950 C
When the EEC goes ALTN mode?
PT is not valid
T2 is not valid
Which one is after fuel filter
Low pressure pump
High pressure pump
Oil cooler
LPT which one is wrong?
Kinetic energy
Changes the energy of hot gases into a mechanical energy
1 fan and 3 booster stage
Igniter plugs positions?
4-8 O'clock position
6-7 O'clock position
8-10 O'clock position
Thrust rating?
ID plug
Engine strut
Inlet Cowl sensor?
P2
T2
Resolver?
Analog to digital (thrust lever angle)
Digital to analog
Analog to analog
Oil supply filter made by?
Metal mesh
Plastic filter
Disposable paper filter
EEC automatically goes which Alt mode?
Hard ALT
Soft ALT
Both
For preservation which is correct
not more than 90 days
not more than 180 days
not more than 1 year
Which of the following statement is not correct for the engine exceedance?
the highlight box around the digital readouts will be automatically reset when the airplane is on the ground
If there is an exceedance the highlight box around the digital readouts will be red when the airplane is on the ground and both EECs de-energized
Whit reset buttons reset the all current exceedance data's from primary engine display
How many Fuel Nozzles are used in combustion chamber?
10
20
30
Whatis the purposeof transientbleedvalve?
it increases the stall margin of highpressure compressor (HPC) during engine start, acceleration
it helps the engine to reach the idle RPM during engine stall
it increases the stal lmargin of low pressure compressor(LPC) during engine start or acceleration
***What are the numbers of stages on compressor section in CMF56-7B engine?
2 stages of LPC and 9 stages HPC
1 stage fan, 4 stages of HPC, 5 stages LPC
3 stages of LPC and 9 stages of HPC
***Engine name plate shows?
engine manufacture data & engine bypass ratio
engine performance & engine wet weight
regulatory agency data & engine manufacture data
***Dry out procedure not longer than?
24 hours
48 hours
72 hours
***Accessory gearbox (agb) takes the movement?
manual drive pad no transfer gearbox
horizontal drive shaft connected to transfer gearbox
vertical drive shaft connected to N1 rotor •
***VCD (vortex control device)?
on the outboard fan cowl
on the inboard fan cowl
on the inboard reverser cowl
***How can you describe simply EGT system of?
here are 9 serial connected thermocouples in the system, there are exhaust gas temperature to their
there are 8 serial connected probes in the system, there are exhaust gas temperature to M528 (EAU) box
there are 8 parallel connected probes in the system, there are temperature to EEC
***What is the operating principles of VSV & VBV?
they operate with the opening of high pressure turbine active clearance control system
compared with the feedback of TBV, VSV operates coming from HMU
compared with the feedback of VSV, VBV operates with coming from HMU
***What is the purpose of VBV?
during the engine acceleration decrease (LPC) low pressure control stall margin
during the engine start of acceleration increase (HPC) high pressure control low pressure stall margin
VBV prevents the LPC deceleration
***Each thrust reverser sleeve has 3 actuators which ... keep 3 actuators operating of the?
hydraulic isolation valve
sync shaft
engine accessory unit (EAU)
***If a wet start is detected, EEC will automatically turns off ignition / stops fuel flow to engine?
15 seconds after the start lever is moved to IDLE during ground
15 seconds after the start valve opens during ground
no automatic shutdown
***If the EEC ALTERNATE lights comes on when aircraft in flight?
pilot switch off the lifgt pushing on the switch goess off, this light also comes ENG control light comes on
if it goes off pushing to the switch it is in soft ALTERNATE work
if it comes on more than 15 seconds there comes from ADIRU and it goes to the HARD ALTERNATE other EEC to HARD ALTERNATE mode
***What are the stage numbers of compressor?
it consists of 1 stage fan, 4 stage boosters, 5 stage high pressure compressors
it consists of 4 stage LPC
it consists of 1 stage fan, 4 stage HPC, 5 stage LPC
***EEC?
has 3 channels in every flight leg
has 1 channel if it is inoperative, EEC
has 2 channels when 1 is alternate
***What is the purpose of ignition exciter?
they convert 28 V DC to 115 V AC
they convert 115 V AC to 15.000-20.000 V DC
these components mounted a generator difference between lines
***Each thrust reverse interlock?
range of motion of a reverse thrust
range of motion of start lever
range of motion of thrust lever
***What is the causes of getting OIL FILTER BYPASS?
supply oil filter starter
scavenge oil filter started to clogging
scavenge and oil filter started to clogging
***The main oil/fuel heat exchanger used to decrease the temperature?
with fuel from the low pressure fuel pump
with fuel from the servo fuel heater
If the supply oil filter clogged, what happened?
red pop-out indicator comes out before the bypass valve
the supply oil filter bypass valve opens and ...
the supply oil filter bypass valve opens
***In which command the HPSOV will close?
overspeed
when start lever in CUT-OFF position
if EGT is above the red line limit
***The EEC?
if N1 > % 15, EEC gains its electrical power from ...
usually gains its electrical power from aircraft electric system
if N2 > % 15, EEC gains its electrical power
***Anti-leakage valve is?
it prevents oil to go from oil tank
warm if there is leak in oil system
it causes amber light
***Which of the following is not the info ... to the control HPTACC?
N1
N2
ambient (P0)
***Which unit on flight deck?
CDU
master maintenance
aural warning module
***Placing engine start switch in GRD position and start lever is placed IDLE?
opens starter valve, closes engine bleed air valve
opens starter valve, closes engine bleed air valve and selected igniters are energized
opens starter valve, closes engine bleed air valve and selected igniters are energized when engine start lever in IDLE
***When ENG VALVE CLOSED light comes on?
HPSOV is in only transit position
HPSOV is in open and commanded open position
HPSOV is in only transit ...
***EEC shows red line?
N1, N2 and start EGT on ground
N1, N2 and 5 minute limit
N1, N2 and fuel
***REV message shows in green?
% 50
% 70
% 90
***... both fuel before it goes to HMU
servo fuel heater
engine oil/fuel heat exchanger
IDG oil cooler
***CFM56-7B motoru Bypass orani açisindan, hangi tip motor sinifina girer?
Low by-pass tip bir motordur
High by-pass tip bir motordur
Medium by-pass tip bir motordur
***Engine forward mount’lar?
Fan frame üzerine bağlanmıştır
Fan case bağlanmıştır
Fan frame mid-box structure arka yüzeyine bağlanmıştır
***Engine aft mount’lar?
High Pressure Compressor (HPC) arka statoru üzerine bağlıdır
Combustion case’nin dış yüzeyine bağlıdır
Türbin frame üzerine bağlıdır
***CFM56-7B motorunda Cowling’ler önden arkaya doğru?
Inlet cowl, thrust reverser cowl, fan cowl şeklinde sıralanmıştır
Inlet cowl, fan cowl, thrust reverser cowl şeklinde sıralanmıştır
Fan cowl, thrust reverser cowl, inlet cowl şeklinde sıralanmıştır
***N1 saftinin üzerinde bulunan rotorlar hangileridir?
HPT ve HPC rotor
Fan, Booster rotor ve LPT rotor
Fan ve HPT rotor
***Engine Drain'lerin amaci nedir?
Akiskanlarin türbinlere ve kompresörlere gitmesini önlemektir
Farkli türlerdeki akiskanlarin (yakit,yag,hidrolik vs.) birbirlerine karismalarini önleyerek disariya atilmalarini saglamaktir
Akiskanlarin sicak bölgelere gitmesini önlemek ve komponent kaçaklarini gözlemleyebilmektir
***Accessoy Gearbox üzerindeki componentler haraketlerini?
N1 saftindan alir
N2 saftindan alir
Fan saftindan alir
***CFM56-7B motorunda bulunan EGT sitemini basitçe nasil ifade edebiliriz?
Sistemde 9 adet birbirine seri baglanmis olan thermocouple bulunur. Bu proplar egzos sicakligini HMU'ya iletirler
Sistemde birbirine paralel bagli 8 adet prop bulunur. Bu proplar egzos gaz sicakligini EEC'ye iletirler
Sistemde birbirlerine seri bagli 8 adet prop bulunur. Bu proplar, egzos gaz sicakligini M528(EAU) box'a iletirler
***HPT'nin görevi nedir?
9 kademeden olsmaktadir ve kendisine gelen havanin basincini artirarak, havayi yanma odasina (combustor)gönderir
Havanin hizini artirir ve bu hava splitter vasitasiyla Primary ve Secondary olarak ikiye ayrilir
Tek kademeden olusmaktadir ve yanma odasindan çikan gazlarin enerjisini mekanik enerjiye çevirerek HPC rotorun ve accessory drive'in dönmesini saglar
***STA 25?
High Pressure Compressor'lerin (HPC) çıkışı
High Pressure Compressor'lerin (HPC) girişi
Low Pressure Compressor'lerin (LPC) girişi
***STA 30?
Low Pressure Compressor'lerin (LPC) çıkışı
***Upper display unit EGT Göstergesi üzerinde 'ENG FAIL' mesaji geldiginde bu indikasyon hangi durumu anlatir?
Motor N2 devri, belirlenen en alt limitten daha asagiya düsürmüstür
EEC devre disi kalmistir
VSV ve VBV sistemi devre disi kalmistir
***Yerde motor durduruldugunda N2 digital gösterge kutusunun kirmizi renge dönmesine asagdakilerden hangisi neden olur?
Uçus esnasinda herhangi bir anda N2 idle speed degerinin altina düsmüstür
N2 indikasyon sisteminde bir ariza vardir
Bir N2 exceedance (Max N2 degerinin asilmasi) durumu vardir
***Normalde Secondary Engine Display Unit üzerinde gözüken VIB değeri hangi şaftın vibrasyonunu gösterir?
N1 şaftındaki vibrasyon değerini
N2 şaftındaki vibrasyon değerini
N1 veya N2 şaftındaki en yüksek vibrasyon değerini
***AVM Signal Conditioner elektriki enerjisini nereden alır?
Standby Battery Bus
Transfer Bus 1
Transfer Bus 2
***N1 ve N2 speed sensörler?
EEC, AVM, DEU'lere bilgi gönderir
Yalniz EEC'ye bilgi gönderir
Yalniz AVM'ye bilgi gönderir
***Start esnasinda motor N2 devri %55'i astiginda neler olur?
Secondary Display Unit'deki N2 gauge'in üzerindeki amber lamba yanar
Start Valve kapanir, ignition kesilir
Burner Staging Valve kapaliya gider
***Motor start switch'inin starter devreden çikincaya kadar GRD pozisyonda durmasi için hangi komponent toprak saglar?
DEU'lar
Start Valve
***Engine oil scavenge sisteminde bulunan chip dedectörler kaç adettir ve özellikleri nelerdir?
Sistemde 3 adet chip dedectör bulunur. Hepsi birbirlerinin aynisidir.Manyetik partikülleri miknatis özellikleri sayesinde tutarlar, manyetik olmayan talaslari tutmak için ise birer tane süzgeçleri vardir
Sistemde 2 adet chip dedectör vardir, bulardan biri ön yatak bölgesinden dönen motor yagini süzer. Diger dedectör ise arka yatak yaglama dönüsünde bulunur. Chip dedectörler birbirinin yerine asla takilamazlar
Sistemde 3 adet chip dedectör bulunur. Motora göre en önde bulunan 1 ve 2 nolu yataklardan dönen yagi süzer. Orta siradaki dedectör 3 nolu yataktan dönen yagi süzer, en arkadaki dedectör ise 4 ve 5 nolu yataklarin dönüs hattindadir
***REVERSER isigini hangi komponent kontrol eder?
Thrust reverse kontrol modülü
Engine Accessory Unit (EAU)
Üst hidrolik actuator'de bulunan LVDT
***High Pressure Turbine Active Clearance control sisteminde?
Yalniz 4. kademe havasi kullanilir
Yalniz 9. kademe havasi kullanilir
4. kademe ve/veya 9. kademe havasi kullanilir
***VBV ve VSV'lerin çalisma prensibi nasildir?
VBV'ler VSV'lerin feedback'ine göre HMU'dan gelen yakit basinciyla çalisirlar
VSV'ler VBV'lerin feedback'ine göre HMU'dan gelen yakit basinciyla çalisirlar
HP Turbine Active Clerance Control (HPTACC) sisteminin açilmasiyla çalisirlar
***HPTACC sensörünün görevi nedir? Motorun hangi istasyonunda bulunur?
Bu sensör High Pressure Turbine statörlerinin açilarinin degistirilmesini saglar. Motorun egzos çikisina monte edilmistir
Bu sensör High Pressure Turbine Clerance Control sisteminin çalismasi için gerekli sinyalleri üretir. Motorun 3. istasyonuna monte edilmistir
Bu sensör 5. compressör kademesi üzerine monte edilmistir. Nose Cowl Anti Ice sisteminin dogru degerlerde çalismasini saglar
***CFM56-7B motorunun 'max thrust' degerleri nasil degistirilir?
Motor thrust degerlerini degistirmek, kablo ayarlari yeniden yapmakla saglanir
EEC üzerine monte edilen'Rating Plug' diger bir tipiyle degistirildiginde motorun thrust rejimi degisir
FMC CDU üzerindeki klavye kullanilarak maksimum thrust degistirilebilir
*** Burner Staging Valve?
VSV ve VBV sistemlerinin çalismasi için gerekli yakit basincini ayarlar
Güçlü bir yakit sprayi saglayarak motorda flameout rikini önler
Yanma odasina giden yakit akis oran bilgisini EEC'ye bildirir
***Yakıt pompasının HP kademesi?
Santrafuj tiplidir
Dişli tiplidir
Impeller tiplidir
***Engine driven fuel pump?
Iki kademelidir
Tek kademelidir
Hydromechanical Unit (HMU] arka yüzeyine bağlanmıştır
***Elektronik Engine Control elektrikli gücünü?
N1 > %15 ise EEC alternator'den saglar
N2 > %15 ise EEC alternator'den saglar
Her zaman uçak elektrik sisteminden sağlar
***Yerde motor çalistirma esnasinda EGT korumasi?
Yoktur. Start EGT limiti asarsa pilot tarafindan motor durdurulur
Vardir. Start EGT limiti asilirsa EEC tarafindan yakit akisi ve ignition durdurulur
Vardir. Start EGT limiti asilirsa DEU'lar tarafindan yakit akisi durdurulur
***EEC'ye, yakit ölçülendirme logic'i için HPC giris sicakligi bilgisini hangi sensor saglar?
P12 sensor
PT25 sensor
T12 sensor
***Asagidaki sartlardan hangisi gerçeklestiginde uçak elektrik sistemi EEC'yi enerjiler?
Basüstü paneldeki EEC switch ON yapilmissa
Start lever CUTOFF pozisyonda ise
Start switch GRD pozisyonda ise
***LVDT ve RVDT’ler ne işe yararlar?
EEC’ye sistemlerin ne kadar hareket edip etmedikleri bilgilerini lineer veya açısal olarak verirler
Sistemlerin hareket bilgilerini dijital olarak DEU’lara verirler
Primary Engine Display Unit üzerinde sistemlerin hareket miktarlarını görmemizi sağlarlar
***P5-2 paneli üzerinde bulunan ENG VALVE CLOSED ikazının bright (parlak) yanması ne anlama gelir?
Valve açık durumda
Valve açığa veya kapalıya gidiyor
Valve kapalı durumda
***Motor üzerinde STA 12 ve STA 25 istasyonunda bulunan T12 ve T25 sensörleri ne çeşit sensörlerdir?
Piezoelektrik sensör
Thermocouple sensör
Platin Element sensör
*** Uçak havadayken, EEC Alternate lambasi yanarsa?
Pilot switch'e basar ve sönüp sönmedigi kontrol edilir, ayrica ENG CONT lambasi yaktirir
ADIRU'den gelen bilgilerde hata olabilir ve 15 sn'den fazla yanarsa, HARD ALT. moduna geçer ve diger EEC'yide HARD ALT moduna aliriz
Switch'e basildiginda sönüyorsa SOFT Alternate'dir ve HMU devreye girer
***EEC, 9. kademedeki T3 sensöründen aldigi bilgiyle hangi sistemlerini kumanda eder?
TBV, BSV, HPTACC
VBV, VSV, LPTACC
TBV, HPTACC
***ADIRU'da olusan bir arizada EEC basinç ve sicaklik bilgilerini nereden alir?
EEC basinç bilgisini kendi üzerinde bulunan bir porttan alir fakat sicaklik bilgisi alamaz
EEC kendi üzerinde olusan bir porttan basinç bilgisini alirkaen, motor üzerinde bulunan T12 ve CIT sensörlerinden de sicaklik bilgisi alir
EEC bu durumda devreden çikar ve HMU o ana kadar yasanmis en güzel bilgilerle motoru çalisir durumda tutmaya çalisir
***ADIRU, EEC'ye hangi bilgileri saglar?
Total air temperature ve outside ambient pressure
VSV TBV'lerin konum bilgilerini gönderir
CIT ve EGT bilgilerini gönderir
***EEC basinç ve hava sicaklik bilgisini hangi kanallar vasitasiyla alir?
Normalde basinç bilgisi T12 sensörden, hava sicaklik bilgisi ise radio altimetre'den alinir
Normal sartlarda basinç ve toplam hava sicaklik bilgisi ADIRU vasitasiyla alinir. Bu bilgi iletisimin kopmasi halinde basinç bilgisi P0 portundan tein edilir. Hava sicaklik bilgisi ise TAT probe ve T12 sensör ile T25 sensörden alinir
EEC'ye basinç bilgisi barometrik altimetreden gelir, sicaklik bilgisi ise T3 sensörden alinir
***Main oil/fuel heat exchangerin görevi nedir? Motorun hangi bölgesine monte edilmistir?
Görevi, motor yagini isitirken motora gelen yakiti sogutmaktir. Motorun fan bypass kismina saat 6:00 pozisyonunda baglanmistir
HMU üzerine monte edilmistir, sicak motor yagi ile soguk yakit arasinda isi transferini saglar
3 nolu yakit tankinin içine monte edilmis olan bu komponentin görevi; isinan hidrolik sivisinin, soguk olan yakitla isi transferi yapmasini saglamaktadir
***HMU servolari motorun hangi bölgesine monte edilmislerdir ve görevleri nelerdir?
Servolar motor fan case'i üzerine monte edilmislerdir. HMU'dan gelen senslere göre çalisarak N1 ve N2
EEC içinde bulunurlar, HMU'dan gelen senslere göre çalisirlar ve 2 kanaldan DEU'lara feedback blgisi
HMU içinde bulunurlar, EEC'den gelen emirlere göre; VBV, VSV, HPTACC, LPTACC sistemlerini çalistirirlar
***EEC’ye analog bilgi veren ve motor üzerinde bulunan P0 portu, EEC2ye hangi bilgiyi verir ve bu bilgi nereden alınır?
Ambient Pressure, STA 0 isatasyonundan
Dinamic Pressure, Pitot tüplerden
Ambient Pressure, EEC üzerinden
***EEC ayrıca neden Fuel Flow Transmitter’den yakıt akış miktar bilgisine ihtiyaç duyar?
Secondary Engine Display üzerinde yakıt akış miktarını gösterebilmek için
HMU içerisindeki FMV’den EEC’nin kendisine gelen feedback bilgisini alamıyorsa
Primary Engine Display üzerinde yakıt akış miktarını gösterebilmek için
***Motorlarla ilgili BITE TEST yaparken karşımıza çıkan RECENT FAULTS ne anlama geliyor?
EEC üzerinde kayıtlı olan son üç bacak arızaları olduğu
EEC üzerinde kayıtlı olan son on bacak arızaları olduğu
EEC üzerinde kayıtlı olan ENGINE CONTROL yaktıran arızalardır
***Motorlarla ilgili BITE TEST yaparken karşımıza çıkan FAULT HISTORY ne anlama geliyor?
***EEC, STA 25 istasyonunda bulunan T25 sensörünü hangi sistemlerin kumandaları için kullanır?
HPTACC, LPTACC
BSV, REVERSE THRUST
***EEC, STA 30 istasyonunda bulunan T3 sensörünü hangi sistemelerin kumandaları için kullanır?
VSV, BSV
***CDU’lar üzerinden BITE TEST yaparken LONG TIME bir arızayla karşılaştığımızda ve şirket prosedürlerine göre 50 saatte bir EEC BITE yapıyorsak bu arızanın giderilmesi için ne kadar bir zamanımız kalmıştır?
450 saat
100 saat
475 saat
***CDU’lar üzerinden BITE TEST yaparken SHORT TIME bir arızayla karşılaştığımızda ve şirket prosedürlerine göre 50 saatte bir EEC BITE yapıyorsak bu arızanın giderilmesi için ne kadar bir zamanımız kalmıştır?
***EEC BITE yaparken ekranın en alt kısmında gözüken 0 ‘SIFIR’ bacağı hangi arızayı gösterir?
Yerde meydana gelmiş arızayı
Birinci uçuş bacağında meydana gelmiş arızayı
Son bacakta meydana gelmiş arızayı
***CFM56-7B motorunda combustion chamber?
Can tiplidir
Cannular tiplidir
Annular tiplidir
***P5 panel üzerinde bulunan start selektör switch'in 'CONT' pozisyonu ile 'FLT' pozisyonu arasindaki fark nedir?
'CONT' pozisyonunda her iki buji kesintisiz ateslemeye hazir hale gelir. 'FLT' pozisyonunda ise
'FLT' pozisyonuna aldigimizda her iki buji ateslemeye hazir hale gelir, ignition sellector switch'in islevi kalmaz
'FLT' pozisyonunda, start valf ve spar valve açilir, sag buji stby AC Bus'tan beslenir
***Control Stand'de bulunan Start Lever'lerin görevlerinelerdir?
Her motor için 1 Start Lever bulunur. Cut Off pozisyonundan IDLE pozisyonuna alindiginda;spar valve ile HPSOV'e açilma emrini verir. Diger görevi ise EEC'ye ignition bilgisi göndermektir
Start Lever'lar çekildiginde, motor üzerindeki; yakit, hidrolik ve pneumatic sistem valfleri kapanir, Generator besleme voltaji kesilir
ON ve OFF pozisyonu olan Start Lever'lar DEU'lari enerjileyerek start valfin açilmasini saglarlar
