7 Questions
What is the purpose of alternating the ignition systems for each ground start sequence?
Equalize igniter plug usage and ensure no dormant faults exist
When are both ignition systems energized in flight?
When water ingestion or a surge/stall is detected
How does the Overspeed and Splitter Unit (OSU) minimize fuel anomalies during low flow conditions?
By dividing the engine metered fuel flow equally between the upper and lower burner manifold segments.
What is the purpose of the Fuel Return To Tank (FRTT) system when set to AUTO?
The FRTT system is armed and will function provided certain conditions are met, such as low fuel pressure or quantity, impending blockage of the LP fuel filter, or HP speed lower than minimum IDG on-line speed.
What is the maximum allowable fuel tank temperature?
+54°C
What is the purpose of the LP fuel filter differential pressure transducer?
The LP fuel filter differential pressure transducer is designed to measure the differential pressure across the LP fuel filter and provide a warning of impending or complete blockage of the filter, as well as indicate low pressure fuel supply to the HP fuel pump.
What is the function of the Low-Pressure (LP) Fuel Filter Differential Pressure (DP) Transducer?
Measurement of the differential pressure across the LP fuel filter and absolute pressure of the fuel supply to the HP pump downstream of the LP fuel filter.
Test your knowledge on flowmeter output and the purpose of High-Pressure (HP) Fuel Filter in an engine's fuel system. Understand how voltage pulses from a flowmeter relate to mass flow rate and the importance of the HP Fuel Filter in preventing adverse engine effects.
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