Engines

Question 1

What type of Engines?

N1 / N2 consist of

How much Thrust

Answer 1

CFM56
Fan/ 3 stage compressor driven by/ 4 stage turbine
9 stage compressor driven by / single stage turbine
32,000lbs

IAE V2500
Fan/ 4 stage lp compressor/ 5 stage turbine
10 stage hp compressor/ 2 stage turbine
33,000lbs

Question 2

What controls the Engines?

How many Channels and if one fails will the other takeover automatically?

Answer 2

FADEC (full authority digital engine control)

Some manuals refer to it as the ECU (Electronic control unit)

2 channels and Yes

Question 3

Where do FADEC get there info from?

Answer 3

Thrust Levers
FMS
Engine Master Switches

EIU- engine interface unit
receive info from LGCIU, FMS, and ADIRS

Question 4

Where are primary engine indications displayed?

Secondary indications are found?

Answer 4

E/WD engine and warning display

Engine and Cruise pages

Question 5

How many fuel nozzles?

What controls igniters

Answer 5

20

FADEC

Question 6

When TRs deploy it directs_______air forward

Answer 6

FAN

Question 7

What drives the accessory gear box?

What is on the accessory gear box?

Answer 7

N2 rotor

Engine Oil Pump
Engine Fuel pumps
Hydraulic Pump
FCU
FADEC alternator
IDG (engine driven integrated drive generator)

Question 8

What does the FADEC do?

Answer 8

Auto Eng Start
Auto Eng Start Adjustment
N1 & N2 OVERSPEED protect
EGT exceedance during start on ground
(Does not protect against EGT exceedance in flight)

Min idle speed adj
Adj of max thrust values
Manual input thrust adjustments
Regulation of Rev Thrust sequence
Display of parameters on ECAM
Detection, isolation, and recording of Eng failures and presents it on E/WD

Question 9

FADEC can be powered 2 ways

Answer 9

Electrical system

Eng driven alternator ( on this after start and through flight then switches back to electrical system after shutdown)

Question 10

On the IAE engine only selecting engine anti ice on
Activates the ______

Answer 10

Igniters

Question 11

When Eng mode is moved to eng start what does that do to pack flow control and why?

Answer 11

Closes them

For sufficient bleed air during start

Question 12

Moving engine mod back to ign start once eng are started does what to igniters?

Answer 12

Activates continuous on both engines

Question 13

When will you get a fault light on eng panel?

Answer 13

Aborted start

Disagreement between HP valve and it’s commanded position

Question 14

TOGA thrust is limited
2 eng
1 eng

Answer 14

5 min
10 min

Question 15

Min oil quantity for Eng start is

Answer 15

13 quarts

Question 16

Low pressure fuel
Valve is controlled by its respective_____

Answer 16

Eng master switch

Question 17

Only Low fuel valve closes when ____?

Answer 17

Fire push button is selected

Question 18

FADEC will automatically activate both igniters when

Additionally in IAE engine.. 3 other times

Answer 18

Eng anti ice selected on
Ignition delay during auto ground start
Engine Interface Unit fails
Eng flame out sensed

Max or Flex selected
Eng master switch selected on/off/on
Approach idle selected

Question 19

Starter limits expressed on cycles which are

Answer 19

4 cycles
2min/20sec X 4 then a 15 min cooldown

Question 20

Max reverse is approved down to _____kts to achieve reverse idle at ______kts

Answer 20

80

60

Question 21

During start when does start valve open and close for
CFM/IAE

Answer 21

IGN START/ 50%N2
IGN START/ 43%N2