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BOEING 787 > ENGINE & APU > Flashcards

ENGINE & APU Flashcards

1
Q

WHICH ENGINE POWER THE 787-8?

A

GEnx 1B67 WITH 67000 LBS TRUST

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2
Q

WHICH ENGINE POWER THE B787-9?

A

GEnx 1B70/75 69800 LBS OF THRUST EACH

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3
Q

WHAT IS CONTROLLING THE ENGINE?

A

THE EEC CONTROLS THE ENGINE

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4
Q

HOW MANY ENGINE INDICATION WE HAVE ON B787?

A

2, PRIMARY AND SECONDARY

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5
Q

PRIMARY INDICATIONS?

A

N1 AND EGT

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6
Q

SECONDARY INDICATIONS?

A

N2,FF,OIL QTY,OIL PRESS,OIL TEMP, VIB

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7
Q

WHEN SECONDARY INDICATIONS AUTOMATICALLY SHOWN?

A 
.INITIAL POWER UP
.START SWITCH IN START
.FUEL CONTROL IN CUTOFF IN FLIGHT
.EXCEEDANCE
.N2 BELOW IDLE
FF ADVISORY SHOWN
.FIRE SWITCH PULLED
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8
Q

WHAT HAPPEN IN CASE OF EXCEEDANCE OF A PARAMETER OPERATING LIMIT?

A

THE ROUND DIAL AND OR BOX BECOMES RED , WHEN THE PARAMETER COMES BACK TO NORMAL THE RED COLOR CAN BE RECALLED

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9
Q

HOW MANY MODES HAS AN EEC?

A

2 NORMAL AND ALTN

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10
Q

HOW MANY ALTN MODE HAS AN EEC?

A

TWO SOFT AND HARD

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11
Q

WHICH PARAMETER IS USING THE EEC TO MANAGE THE ENGINE?

A

N1

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12
Q

HOW THE ALTERNATE MODE ACTIVATE?

A

IF NORMAL SIGNAL ARE NOT AVAILABLE THE SYSTEM OF THE EEC SWITH AUTOMATICALLY TO ALTN MODE

SOFT MODE: AUTO SWITCHING AND NORM STILL SHOWN IN THE SWITCH

HARD: MANUALLY SELECTED

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13
Q

IS THE A/T WORKING IN EITHER ALTN AND NORMAL MODE?

A

YES IT DOES

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14
Q

WHICH FEATURE PROVIDE THE EEC?

A

OVERSPEED PROTECTION, START MONITORING,THRUST RAMPING,TAP,IDLE SELECTION,AUTO RELIGHT,IGNITION,

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15
Q

HOW DOES IT WORK THE OVERSPEED PROTECTION ?

A

CONTROLLING THE N2 RPM AND ADJUSTING THE FUEL FLOW,IF THE OVERSPEED OCCURS AND PERSIST ENGINE WILL BE SHUTDOWN

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16
Q

THRUST RAMPING FEATURE?

A

TO AVOID AND REDUCE HIGH STRESS ON THE FAN BLADE DURING TAKE OFF IN HIGH GUST OR CROSSWINDS THE TAKE OFF THRUST IS SLOWLY AND GRADUALLY SET,DUE TO TRUST RAMPING TAKE OFF THRUST MAY NOT BE AVAILABLE UNTIL 65 KTS

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17
Q

WHEN THE EEC COMAND A SHUT DOWN OF THE ENGINE ON GRD?

A

WHEN ON GRD ,THRUST LEVER IDLE AND ENGINE IS ABOVE IDLE SPEED AND NOT DECELERATING NORMALLY

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18
Q

WHAT IS THE TAP?

A

(THRUST ASYMMETRY PROTECTION) IS AN AUTOMATIC FEATURE THAT PROVIDE PROTECTION AGAINST ASYMMETRIC THRUST CONDITION DURING TAKE OFF OR GO AROUND LIMITING OR REDUCING THE HIGHER THRUST IN AN ENGINE

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19
Q

WHAT THE TAP ENHANCES?

A

LOWER APPR SPEED
INCREASE ENGINE OUT CONTROL
FULL RATED THRUST AVAILABLE FOR ALL ENGINE OPS AT ANY SPEED OR WEIGHT

20
Q

WHAT IS THE TBV?

A

TRANSIENT BLEED VALVE,IT S PURPOSE IS TO UNLOAD THE COMPRESSOR DURING ACCELERATIONS

21
Q

WHAT IF THE TBV STUCK OPEN?

A

AND “ENG TBV OPEN “EICA APPEAR Associated reverser is deactivated or if it happen during REV OPERATION THE AFFECTED REV IS LIMITED TO IDLE

22
Q

WHEN THE “ENG TBV OPEN” EICAS SHOWS

A

BELOW 80 KTS ON GRD

23
Q

WHICH IDLE SELECTION ARE AVAILABLE ?

A

MINIMUM IDLE

ICE IDLE

APPROACH IDLE

24
Q

WHEN IS THE APPROACH IDLE SELECTED

A

WHEN FLAPS ARE 25 OR MORE AND GEAR DOWN

25
Q

WHEN ICE IDLE IS SELECTED?

A

WHEN EAI IS ON

26
Q

WHAT IS THE ICA?

A

ICE CRYSTAL ANTI ICE,AUTOMATIC FEATURE,ACTIVES ONLY ABOVE 30000FT LAST 30 MIN WITH INCREMENTS OF 15 MIN MORE, AND STOPS DESCENDING BELOW 28500 FT

27
Q

HOW THE ENGINE CAN BE STARTED>

A

USING ONLY THE AUTOSTART

28
Q

WHAT IS CONTROLLING THE START SWITCH?

A

THE STARTERS

29
Q

WHAT IS CONTROLLING THE FUEL CONTROL SWITCH?

A

IT CONTROLS FUEL AND IGNITION

30
Q

WHICH SOURCE CAN BE USED TO START THE ENGINE?

A

APU EXT POWER OR THE OTHER ENGINE

31
Q

WHEN THE START WILL BE ABORTED AND NO EXTRA ATTEMPT WILL BE MADE?

A

WHEN : BOTH STARTERS FAIL, NO N1 ROTATION, NO OIL PRESSURE

32
Q

WHEN THE EEC TRY TO CORRECT THE START?

A 
HUNG START 
HOT START
WET START
NO EGT RISE
EXCEEDANCE OF START LIMIT TIME
COMPRESSOR STALL
LOSS OF ONE STARTER
33
Q

HOW MANY ATTEMPTS ON GRD TO START?

A

3

34
Q

HOW MANY IGNITERS HAS EACH ENGINE?

A

2

35
Q

WHEN THE AUTO RELIGHT FUNCTION IS ACTIVATED ?

A

ON GRD OR IN FLIGHT ANYTIME THE ENGINE IS BELOW IDLE AND THE FUEL CONTROL SWITCH IS IN RUN

36
Q

ENGINE FUEL SYS?

A

FUEL GOES FROM RESERVOIRS TO SPAR VALVE ,PUMP,HEAT EXCHG,PUMP,FILTER AND FMU

37
Q

OIL SYS

A

RESERVOIR,OIL PUMP, OIL FILTER, 2 HEAT EXCHG,GEAR BOX,SCAVENGE

38
Q

HOW MANY STARTERS HAS THE APU?

A

2 L AND R

39
Q

IN BATTERY START THE APU WHICH STARTER USE?

A

RIGHT ONE

40
Q

UP TO WHICH ALT CAN START APU WITH NO PUMP OPERATING?

A

UP TO 14000FT

41
Q

WHEN THE APU IS CONSIDERED ON?

A

95% +2 SEC

42
Q

HOW MANY START IS DESIGNED FOR THE APU BATTERY?

A

3 ATTEMPTS BUT BEFORE DOING THE 3 RD ONE 5 MIN COOLING PERIOD REQUIRED

43
Q

IN FLIGHT WHEN THE APU START AUTOMATICALLY?

A

WHEN 3 OR MORE ENGINE GENERATORS FAILS

44
Q

AT HOW MANY % RPM THE ACU SLOSES THE APU DOOR?

A

15%

45
Q

APU OPERATING MODES

A

ATTENDED AND UNATTENDED

BOEING 787 (12 decks)

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