Engine System Flashcards
Which bearing has its own remote Oil Scavenge Pump?
Bearing 5
Time limit for TOGA?
5 minutes per sortie
Time limit for Max Power?
Used in an emergency for a maximum of 10 minutes.
What does Off with Black writing and Cyan backing in the N1% mean?
It means that the Pilot has shut down the engine(s)
What does Fail with Black writing and yellow backing in the N1% mean?
It means the FADEC has shut the engine down.
What engine does the Phenom have?
The Phenom 100 has two rear mounted Pratt and Whitney PW617F-E
What are the Pratt and Whitney PW617F-E specifications?
The PW617F-E is a two spool turbofan engine with a full-length annular bypass duct
A concentric shaft system supports the LP (Low Pressure) and HP (High Pressure) rotors
The inner LP shaft supports the LP compressor (fan) which is driven by a single stage LP turbine
The outer HP shaft system is mechanically independent of the LP shaft and supports a single mixed flow stage and one centrifugal stage HP compressor driven by a single-stage HP turbine
The engine is controlled via a dual channel Full Authority Digital Engine Control (FADEC) system, providing flexible engine operation and reduced workload
Engine indications and alerts are displayed on the MFD
What do the Engine Controls and Indications comprise?
MFD
Engine Control Panel
Thrust Lever Quadrant
What is shown on the Engine MFD?
A digital display of engine thrust, temperatures and warnings
What is the purpose of the engine control panel?
Controls starting, stopping, and running the engine
What is the Thrust Lever Quadrant? (TLQ)
The throttle levels are used to set the required power.
How is the demand on the engine controlled?
From the flight-deck control stand, using the thrust levers and Powerplant Control Panel via the dual channel FADEC.
How are thrust requirements transmitted?
To the FADEC based on a Thrust Lever Angle (TLA).
What are the thrust lever positions?
MAX - Selects maximum thrust power (Max 10 mins)
TO/GA - Selects Take-Off and Go-Around power (Max 5 mins per sortie)
CON/CLB - Provides maximum continuous and climb power
MAX CRS - Selects the cruise power
IDLE - Selects the ground and flight idle power. Positioning the thrust levers between the above power settings selects an intermediate power setting
How do you activate take off and go around mode?
The mode is activated by pressing the button on the side of the power lever and brings up flight director cues on the PFD.
What is the attitude reference during rotation and take-off?
The flight director commands a wings level, 9.5° pitch up attitude. Selected altitude capture mode is automatically armed when the aircraft is at least 400 ft below the selected altitude, at the time TO/GA is selected.
How is the FADEC Powered?
The FADEC is powered by a 28 VDC source and once an engine has achieved idle speed, if a failure or interruption occurs in the power supply, both FADEC channels are automatically reverted to the engine driven Permanent Magnet Alternator (PMA).
What start up protection does the FADEC offer?
Hung start
Hot start
No light up
Hung and hot start protections are inhibited in the air.
What is the Engine starting sequence on the ground?
Fuel Boost Pumps to AUTO
ENG IGNITION to AUTO
Thrust Levers at IDLE
ENG START/STOP knob to START
How do you abort the start sequence?
An engine start can be manually aborted at any time by moving the ENG START/STOP knob to STOP.
When will the FADEC abort the engine start?
No light up. Inter Turbine Temperature (ITT) has not risen significantly after 15 seconds of fuel flow
A hot start. Where the ITT exceeds the starting limit
A hung start. When time to reach IDLE exceeds 45 seconds, on the ground after light up is detected
When the FADEC aborts a start, fuel flow is cut off and ignition is turned off.
What is ATR?
The Automatic Thrust Reserve (ATR), controlled by the FADEC, automatically provides maximum engine thrust reserve (TO RSV) whenever it is armed, thrust levers are at least TO/GA
What conditions are required for ATR?
Thrust levers are at least in TOGA and;
Difference of N1 values greater than 20%
Loss of communications between both engines
One engine failure during take-off
