Engines

Question 1

How much thrust do the engines produce in normal? APR?

Answer 1

8729 lbs (9220)

Question 2

The engines are flat rated to ISA + ___

Answer 2

ISA + 15

Question 3

The N2 is composed of ___, ___, ___ and a ___.

Answer 3

14-stage axial flow compressor, a combust or section, accessory gearbox, 2-stage high-pressure turbine

Question 4

Bypass air is produced by ___

Answer 4

single stage N1 fan

Question 5

Bypass air produces ___% of the thrust at takeoff

Answer 5

80%

Question 6

Variable geometry vanes uses ___ (controlled by the ___) to adjust the ___ to stabilize airflow and prevent ___ or ___

Answer 6

fuel (FCU); compressor inlet guide and stator vanes; compressor stall or surge

Question 7

The accessory gearbox is comprised of _____.

Answer 7

Hydraulic pump 
Oil reservoir and pumps
Generator (IDG)
Fuel pump and FCU (high pressure fuel for motive flow)
Alternator (N1 control amplifier)
Air Turbine Starter

Question 8

Engine Fuel performs four functions:

Answer 8

moves the compressor stator and guide vanes;
cools engine oil;
actuates and lubricates fuel system components;
provides motive flow for scavenge and main ejector pumps

Question 9

The fuel system is regulated by the ___ and ___

Answer 9

Fuel control unit (FCU) and Electronic fuel control unit (ECU)

Question 10

The FCU responds to the mechanical commands of the ___

Answer 10

thrust levers

Question 11

The FCU schedules fuel during ____ and ____ power settings. It matches the ___ (N1 or N2)

Answer 11

Engine start and low power settings (<79% N1)

It matches the N2 readings

Question 12

The ECU or N1 Control Amplifier trims/adjusts ___ power settings but only if the ___ switches are in the ON position.

Answer 12

High >79% N1

ENG SPEED switches

Question 13

max consumption of oil

Answer 13

0.05 gallons per hour

Question 14

Remote tank quantity test is located ___.

The remote replenishment tank is located in the ___.

Answer 14

Pilot’s side in cockpit

aft equipment bay

Question 15

The remote oil replenishment tank holds ___ gallons

Check engine oil levels between ___ and___ after engine shutdown.

Answer 15

6 gallons

15 min and 2 hours

Question 16

If replenishment period is exceed then you must ___ before testing or adding oil.

If note than ___ US quarts of oil must be added you must ____ before adding more oil

Answer 16

dry motor the engine

2 US quarts
dry motor engines for min of 30 sec

Question 17

The Air Turbine Starter can dry motor the engine up to ____ N2

The starter disengages at ___ N2

Do you need to let the ATS come to a complete stop before reengaging?

Answer 17

28% N2

55% N2

No; can reengage if N2 < 55%

Question 18

The starter control valve controls the initial rate of engine acceleration by regulating the amount of ___ supplied to the starter.

Answer 18

air

Question 19

To open the starter control valve you need ___ supplied by either the ___ or ___ AND ___ supplied by the ___, ___, or ___

Answer 19

28 vDC: APU battery or external power
AND
10th stage bleed air: APU (40psi), external air (45 psi), other engine (60 psi - 85%N2)

Question 20

The ___ switch controls the starter control valve.

Answer 20

Engine START/STOP switch

Question 21

Pressing the ENG START/STOP switch:

1) opens the ___ valve allowing ___ to engage the ___
2) illuminates the ___
3) opens the ___, ___ and ___ valves

Answer 21

1) starter control valve; bleed air to engage the ATS
2) white START switch
3) 10th Stage L ENG, R ENG and ISOL valves

Question 22

At ___% N2 the start control valve ___ and the ___disengages.

Answer 22

55% N2; de-energized

ATS

Question 23

Engine starter limitations:
1 and 2:
3 and subsequent:

Answer 23

30 sec - no cooling between

30 sec - 5 min cooling btwn attempts

Question 24

Engine dry motor limitations:
1:
2 and subsequent:

Answer 24

90 sec - 5 min cooling

30 sec - 5 min cooling

Question 25

An ignition system consists of one ___ and one ___.

The C605 has ___ ignition system(s).

Answer 25

one ignition exciter and one ignition plug

two: A and B

Question 26

Ignition system A is powered by the ___ bus

Ignition system B is powered by the ___ bus

Answer 26

AC ESS

BATT bus through a static inverter

Question 27

the ignition system has ___ modes: ___, ___ and ___

Answer 27

3: normal, continuous and auto-ignition

Question 28

the ___ ignition mode is used to start engines

ignition is armed by ___, energized upon ___ and de-energized at ___.

Answer 28

Normal;

armed: pressing A or B IGN switchlight
energized: starter engagement
de-energized: starter cutout

Question 29

Continuous ignition is activated by ___ and should be used: (5)

Answer 29

pressing the CONT ignition switch;
used:
1) takeoff and landings on contaminated runways
2) takeoffs with high crosswind components (>10kts)
3) flight through moderate or heavier rain
4) flight through moderate or heavier turbulence
5) vicinity of thunderstorms

Question 30

auto-ignition is used for ___

and is based on ___

Answer 30

stall protection based on AOA data; both A and B systems energized

Question 31

How do you disable the ignition system?

Answer 31

Pressing the associated ENG FIRE PUSH switch

Question 32

The vibration level of the ___ (N1 or N2) is displayed continuously.

___ message appears when the vibration exceeds 2.7 mils

Answer 32

N1

FAN VIB

Question 33

When the ___ (N1 or N2) vibration level exceeds 1.7 mils an amber VIB is displayed in ___

Answer 33

N2; N2 gauge

Question 34

For thrust reversers to be armed you need:
1)
2)

Answer 34

1) switches to ARM

2) respective 14th St bleed air valve open

Question 35

___ is automatically disabled while the TRs are activates

Answer 35

Anti-ice systems (both use 14th stage bleed air)

Question 36

In addition to need:

1) ___ (electric)
2) ___ (pneumatic)
3) ___

Answer 36

1) switch to ARM
2) 14th St bleed air valve open and airflow
3) weight on wheels

Question 37

APR (Automatic Performance Reserve System) monitors the ___ (N1 or N2) rpm of both engines during takeoff and is armed for ___ (duration).

Answer 37

N1

5 min

Question 38

To arm the APR you need:

5

Answer 38

1) APR switch - ON
2) both ENG SPEED switches - ON
3) weight OFF wheels
4) both engines > 79% N1
5) Two DCUs serviceable

Question 39

APR is activated when an engine’s N1 RPM < ___%.

the DCUS send signals to the ___ of both engines but only good engine can respond by increasing the N1 by ___%

Answer 39

67.6%

N1 amplifiers (ECUs)
2%

Question 40

A L/R ENG OIL PRESS warning annunciation is displayed when ___.

Answer 40

Oil pressure is < 25 psi

Question 41

Oil temperature readout turns Red when > ___.

Answer 41

163 deg C

Question 42

Fuel flow readout turns to dashes when ____

Answer 42

fuel flow > 5000 lbs/hr