Specific Fuel Consumption(SFC)
Definition
The fuel flow rate divided by thrust or power output, measuring engine efficiency. Lower SFC means better fuel efficiency. SFC varies with altitude, speed, and power setting.
Why Specific Fuel Consumption Matters for Pilots
Performance planning directly affects flight safety. Knowing how Specific Fuel Consumption works helps you calculate whether a takeoff or landing is safe for given conditions. FAA and EASA exams frequently test performance concepts, and examiners expect you to apply Specific Fuel Consumption to real-world scenarios during oral exams and checkrides.
Exam Tip
This concept is commonly tested in performance-related questions on FAA and EASA exams. Make sure you can explain Specific Fuel Consumption in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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