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Flashcards in Powerplant Deck (26)
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1
Q

When does engine synchronization occur?

A

N1–1.5% or N2 –2.5% with the left engine as master.

2
Q

What is the engine ignition powered by?

A

System A from AC Essential Bus and System B from the Battery Bus through a static inverter.

3
Q

What are the FADECs powered by?

A

The DC electric system below 50% N2 and by a dedicated FADEC PMA alternator above 50% N2.

4
Q

What is the minimum bleed air pressure for engine start?

A

45 psi +/-3 psi.

5
Q

What is the minimum oil temperature for start on the ground?

A

-40 degrees C-.

6
Q

The CF34-8C5B1 has a normal thrust rating of ________ pounds. At APR power, this increase to ________.

A

12,670/13,790

7
Q

Bypass air from the N1 Fan produces approximately __________of the engine thrust.

A

80%

8
Q

Fuel pressure from the fuel metering unit is used by FADEC to operate

A

The variable geometry guide vanes of the N2 compressor and the Operability Valve

9
Q

During start, the thrust lever should be moved from shutoff at _________.

A

20% N2

10
Q

Starter disengagement should occur at _______.

A

50% N2

11
Q

Continuous ignition must be on if:

A

Takeoff/landing on contaminated runways

  • -Moderate or greater turbulence
  • -Moderate or greater rainfall
  • -Vicinity of TRWs
12
Q

What will happen if both sources of power to FADEC fail?

A

The engine will shut down

13
Q

The two channels of each FADEC will never make a simultaneous input to the engine except _________________.

A

When an engine overspeed condition is sensed

14
Q

With an engine failure, FADEC will schedule One engine Out (OEO) power as follows:

A

APR power if thrust lever is in TOGA detent
MCT power if thrust lever in CLB detent
Proportional increase in the cruise range

15
Q

Alerting of a pending oil filter bypass or oil chip detection will be presented to the pilot on the EICAS system

A

FALSE–will be indicated on a panel in the AFT equipment bay.

16
Q

Gauges are available to alert the pilot to vibration exceedences in both the N1 and N2 sections of each engine.

A

FALSE–Gauges only for N1–VIB Icon will appear inside the N2 gauge

17
Q

How many different idle power settings are available from FADEC.

A

FIVE—Flight Idle, Approach Idle, Landing Idle, Reverse Idle and Ground Idle.

18
Q

How is engine oil temperature kept under control?

A

A fuel/oil heat exchanger uses cold fuel to reduce oil temperature. It also warms the fuel to keep it within limits.

19
Q

In the event of FADEC failure, the other engine FADEC can provide fuel control of both engines

A

FALSE

20
Q

One Engine Out (OEO) fuel scheduling from FADEC will occur when the N1 speed difference between the engines exceeds _____.

A

15%

21
Q

How will you know that APR power is being scheduled by FADEC?

A

A green APR icon will appear inside the N1 gauge.

22
Q

What will selection of the High Power schedule switchlight do?

A

Set MCT power on both engines. However its use is prohibited by GoJet pilots

23
Q

FADEC continues to update its power calculation during takeoff up to _____. It locks in this setting until ___________.

A

65 Kts/400 ft AGL or thrust lever moved from TOGA detent

24
Q

During a starter assisted engine start, you should not try to engage the air turbine starter if the N2 RPM exceeds ___________.

A

45%

25
Q

Engine crossbleed starts are accomplished using ___________.

A

Bleed air only from the other operating engine.

26
Q

What occurs during a thrust reverser deployment in flight?

A

The FADEC will schedule idle thrust on the engine but the thrust lever will not move.