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6 Questions To See How Much You Know About Jet Engines

Good luck!


  1. 1) On a turbofan engine, what is N1?
    Wikipedia

    N1 is the speed of the first spool of a two-spool engine, which on a turbofan is the big fan on the front.

    N1 is the speed of the first spool of a two-spool engine, which on a turbofan is the big fan on the front.

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  2. 2) Where does bypass air go?

    Bypass air goes around the engine core, but still passes through the engine cowling. In most modern high-bypass turbofans, bypass air accounts for the majority of thrust produced by the engine.

    Bypass air goes around the engine core, but still passes through the engine cowling. In most modern high-bypass turbofans, bypass air accounts for the majority of thrust produced by the engine.

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  3. 3) In the compressor section of a turbofan engine, which of the following parts spin?

    The rotor blades spin around the shaft, and the stators are static. Some engines have variable stators that change pitch, but they don't rotate around the engine shaft.

    The rotor blades spin around the shaft, and the stators are static. Some engines have variable stators that change pitch, but they don't rotate around the engine shaft.

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  4. 4) According to the FAA, how much does 1 gallon of Jet A fuel weigh?
    ATOMIC Hot Links

    According to the FAA, Jet A weighs 6.8 pounds per gallon.

    According to the FAA, Jet A weighs 6.8 pounds per gallon.

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  5. 5) Nearly all modern turbofan engines found on jets have:
    wbaiv

    Axial flow engines compress air by moving it through smaller and smaller stages of the compressor.

    Axial flow engines compress air by moving it through smaller and smaller stages of the compressor.

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  6. 6) What is a compressor stall?
    wbaiv

    A compressor stall is a local disruption of airflow in the engine. They can range in severity from a small drop in power to a complete loss of compression.

    A compressor stall is a local disruption of airflow in the engine. They can range in severity from a small drop in power to a complete loss of compression.

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Not bad...you know a thing or two about jet engines.

You scored %.

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You've got jet engines down...for the most part.

You scored %. Well done.

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When it comes to jet engines, you pretty much know it all.

You scored %. Nice work.

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Colin Cutler

Colin is a Boldmethod co-founder, pilot and graphic artist. He's been a flight instructor at the University of North Dakota, an airline pilot on the CRJ-200, and has directed development of numerous commercial and military training systems. You can reach him at colin@boldmethod.com.

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