Powerplant Flashcards
The ——- computes and displays on the E/WD the EPR thrust rating limit for the selected Thrust Lever Angle (TLA).
FADEC
If a thrust lever is set between two detents (or a detent and a stop) the FADEC computes power for the:
Next higher detent (or stop).
On the ground, If the crew have not selected a higher temperature for FLEX, the detent will:
Set MCT thrust.
If the FLEX setting was used for take off the pilot can select MCT thrust by either moving the thrust lever to the :
TOGA stop or CL detent and then back to the FLX/MCT detent. FLEX power cannot be selected until the aircraft is on the ground again.
If the thrust levers are set to the IDLE STOP, ATHR and Alpha Floor will:
Disarm and deactivate.
The Bump Thrust can be obtained by pressing the Thrust Bump pushbutton switch on either thrust lever when the thrust levers are:
Forward of the FLX/MCT position during takeoff or go around.
LVR MCT is a reminder to the pilot to set:
MCT power.
An amber display of LVR ASYM appears on the 3rd line of the FMA if:
ATHR is active with both engines running and one thrust lever is set out of the CL detent.
LVR CLB May appear on the PFD FMA and is a reminder to the pilot to set:
The thrust levers to the CL detent (both engines operating).
The FADEC is a:
Digital control system that performs complete engine management.
The FADEC has two-channel redundancy, with one channel normally active and the other:
In standby. In the event of a single channel failure the other channel controls the engine.
The FADEC can be powered by the aircraft electrical system but is normally self powered by a permanent:
Alternator whenever the engine N2 rpm is above 10%.
Whether or not the FADEC is powered is indicated by the display of the engine parameters on the:
ECAM.
Initially, when electrical power is first applied to the aircraft, the FADEC is powered for:
5 minutes. After this time period the FADEC shuts down and is not powered.
When IGN/START is selected, the aircraft electrical system again powers the FADEC until:
The N2 exceeds 10%, at which time the FADEC power is self generated.
During engine shutdown, and N2 below 10%, the FADEC:
Remains powered by the aircraft electrical system for 5 minutes.
Regardless of the mode, the FADEC prevents the thrust from exceeding the limit for the:
Thrust lever position.
The EPR value is computed by dividing the:
Low pressure turbine exhaust pressure (P5) by the engine inlet pressure (P2).
The command EPR shows on the ECAM as a:
White dot.
If sensed or computed EPR is not available the FADEC automatically reverts to the:
N1 mode. An equivalent thrust level remains set until there is a change in thrust lever angle.
When the FADEC N1 mode is active auto thrust and alpha floor protection:
Are lost.
When a loss of sensed EPR (P2 and/or P5) automatic reversion to the Rated N1 occurs and command N1 is indicated by a:
Small white circle on the N1 indicator. The N1 thrust limit is displayed in the N1 thrust rating limit box.
The blue command arc that appears on the EPR indicator provides a quick indication of the difference between:
The current EPR pointer and the EPR command value.
The Command Arc that appears momentarily on the EPR indicator only appears during:
ATHR operation.