Fuel Systems Flashcards
What is the function of idling jets in an aircraft engine?
They provide an air and fuel mixture when the throttle is closed.
What is the difference between internal and external supercharging?
Internal supercharging is integrated into the engine and doesn’t require a wastegate, while external supercharging uses turbochargers driven by exhaust gases.
What components are used in a turbocharging system?
The turbine, compressor, wastegate, and pressure controller.
How does positioning the carburetor before the compressor affect engine performance?
It reduces the risk of detonation by cooling the fuel-air mixture.
What determines engine power output in a supercharged or turbocharged engine?
Manifold pressure.
What is critical altitude in supercharged engines?
The altitude where the supercharger can no longer maintain sea-level manifold pressure.
How is turbine RPM controlled in a turbocharged engine?
By the wastegate, which regulates exhaust gas flow.
Why is there a higher risk of detonation in supercharged engines?
Higher manifold pressures increase air temperature and density.
What is the primary purpose of supercharging?
To increase mass airflow into the engine, enhancing performance.
What is the role of the impeller and diffuser in a compressor?
They increase air velocity and pressure for better engine performance.
What are the advantages of using modern tools like iPads for flight planning?
They offer features like real-time navigation, reduced planning time, and enhanced accuracy.
Why is it important to visualize throttle states during exams?
To understand how engine systems operate during idling and throttle adjustments.
