Podcast
Questions and Answers
What is the primary function of the engine fuel system?
What is the primary function of the engine fuel system?
- To maintain a steady running state and ensure smooth maximum rate accelerations (correct)
- To regulate the air delivery to the compressor for smooth engine acceleration
- To limit the fuel flow to avoid unstable compressor airflow and engine surge
- To deliver clean, ice-free fuel to the engine as requested by the flight crew
What is represented by the normal running line in the fuel system?
What is represented by the normal running line in the fuel system?
- The back pressure caused by the increase in fuel flow
- The maximum rate of accelerations without surging
- The fuel requirement for a given rpm (correct)
- The decrease in available energy causing engine deceleration
What effect does an increase in fuel flow initially have on the engine?
What effect does an increase in fuel flow initially have on the engine?
- It decreases the energy available to the turbines, causing a decrease in engine speed
- It results in a rapid deceleration of the engine
- It causes the engine to stabilize at the steady state demand line
- It restricts compressor air delivery, leading to unstable airflow and engine surge (correct)
What must be maintained to avoid flameout in the engine?
What must be maintained to avoid flameout in the engine?
What happens when the available energy in the gas stream decreases?
What happens when the available energy in the gas stream decreases?
What is the metering requirement of the fuel system related to?
What is the metering requirement of the fuel system related to?
What is the function of the Fuel Metering Unit (FMU)?
What is the function of the Fuel Metering Unit (FMU)?
At what point is the Fuel Flow Transmitter reading inaccurate?
At what point is the Fuel Flow Transmitter reading inaccurate?
What occurs when the COSS control circuit commands the fuel switch to the 'OFF' position?
What occurs when the COSS control circuit commands the fuel switch to the 'OFF' position?
How is deceleration achieved in the FMU operation during engine running?
How is deceleration achieved in the FMU operation during engine running?
What is the purpose of the differential pressure transducer signals supplied to the EEC (channel A)?
What is the purpose of the differential pressure transducer signals supplied to the EEC (channel A)?
What happens when the aircraft fuel control switch is in the 'ON' position during engine running?
What happens when the aircraft fuel control switch is in the 'ON' position during engine running?
What is the purpose of controlling fuel spill in the HP pump?
What is the purpose of controlling fuel spill in the HP pump?
What is the function of the LP fuel filter differential pressure transducer?
What is the function of the LP fuel filter differential pressure transducer?
What is the main purpose of the LP fuel filter assembly?
What is the main purpose of the LP fuel filter assembly?
What does the LP fuel DP transducer do when the differential pressure rises above the first EEC-predetermined threshold?
What does the LP fuel DP transducer do when the differential pressure rises above the first EEC-predetermined threshold?
What are the two functions of the LP fuel DP transducer?
What are the two functions of the LP fuel DP transducer?
What is the purpose of the Fuel Return To Tank (FRTT) differential pressure transducer?
What is the purpose of the Fuel Return To Tank (FRTT) differential pressure transducer?
What is the purpose of the HP Fuel Filter?
What is the purpose of the HP Fuel Filter?
What is the filtration rating of the filter element in the HP Fuel Filter?
What is the filtration rating of the filter element in the HP Fuel Filter?
What is the purpose of the Fuel Temperature Transducer?
What is the purpose of the Fuel Temperature Transducer?
What is the function of the Overspeed and Splitter Unit (OSU)?
What is the function of the Overspeed and Splitter Unit (OSU)?
What is the purpose of the upper and lower fuel manifolds?
What is the purpose of the upper and lower fuel manifolds?
What occurs when the splitter valve in the Overspeed and Splitter Unit (OSU) is in the closed position?
What occurs when the splitter valve in the Overspeed and Splitter Unit (OSU) is in the closed position?
Which component of the fuel spray nozzles is responsible for atomizing the fuel for efficient combustion?
Which component of the fuel spray nozzles is responsible for atomizing the fuel for efficient combustion?
What happens to the fuel in the fuel burner nozzles and manifold during engine shutdown?
What happens to the fuel in the fuel burner nozzles and manifold during engine shutdown?
Which display window presentation provides digital readings of engine fuel flow and indicates the difference in fuel flow between the two engines?
Which display window presentation provides digital readings of engine fuel flow and indicates the difference in fuel flow between the two engines?
What CAS message is associated with LP Pump outlet indicating insufficient fuel pressure for the HP fuel system?
What CAS message is associated with LP Pump outlet indicating insufficient fuel pressure for the HP fuel system?
What condition causes the FRTT (Fuel Return To Tank) system to cease operation?
What condition causes the FRTT (Fuel Return To Tank) system to cease operation?
What does the High Pressure Shutoff Valve (HPSOV) do when FUEL CONTROL switch selection is OFF?
What does the High Pressure Shutoff Valve (HPSOV) do when FUEL CONTROL switch selection is OFF?
What is the purpose of alternating the ignition systems for each ground start sequence?
What is the purpose of alternating the ignition systems for each ground start sequence?
What triggers both of the ignition systems on the ground?
What triggers both of the ignition systems on the ground?
What is the purpose of energizing both ignition systems in case of water ingestion or surge in stall detection?
What is the purpose of energizing both ignition systems in case of water ingestion or surge in stall detection?
What detects electrical faults in the Electronic Engine Controller (EEC)?
What detects electrical faults in the Electronic Engine Controller (EEC)?
What is the purpose of the Input Electromagnetic Interference (EMI) Filter in the ignition unit?
What is the purpose of the Input Electromagnetic Interference (EMI) Filter in the ignition unit?
What is the function of the Power Control Section in the ignition unit?
What is the function of the Power Control Section in the ignition unit?
What are the components of the Ignition System?
What are the components of the Ignition System?
What is the role of Z diodes in the ignition unit?
What is the role of Z diodes in the ignition unit?
What causes ignition of the fuel-air mixture in the combustion chamber?
What causes ignition of the fuel-air mixture in the combustion chamber?
What is contained in a sealed case to protect it from damage and moisture?
What is contained in a sealed case to protect it from damage and moisture?
