Bypass Ratio
Definition
The ratio of air passing around the engine core to air passing through the core in a turbofan. Modern high-bypass engines (ratio 10:1 or higher) achieve excellent fuel efficiency with reduced noise.
Why Bypass Ratio Matters for Pilots
Understanding Bypass Ratio is important for pilot certification exams and safe flight operations. This concept appears on FAA and EASA knowledge tests, and examiners may ask about it during oral checkrides. A thorough understanding of Bypass Ratio helps you make better decisions in the cockpit.
Exam Tip
This concept is commonly tested in engines-related questions on FAA and EASA exams. Make sure you can explain Bypass Ratio 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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