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Quiz: 8 Questions To See How Much You Know About Aerodynamics

Don't let gravity pull your score down.


  1. 1) Which of the following is NOT one of the 4 forces that acts on an aircraft in straight-and-level, unaccelerated flight?
    Boldmethod

    The four forces acting on an aircraft in straight-and-level, unaccelerated flight are thrust, drag, lift, and weight.

    The four forces acting on an aircraft in straight-and-level, unaccelerated flight are thrust, drag, lift, and weight.

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  2. 2) The acute angle between the chord line of the wing and the direction of the relative wind is the _____.

    The acute angle between the chord line of the wing and the direction of the relative wind is called the angle of attack. 

    The acute angle between the chord line of the wing and the direction of the relative wind is called the angle of attack. 

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  3. 3) What is the best rate of climb speed in a Cessna 172?
    Boldmethod

    Climbing at Vy allows pilots to maximize their climb while sacrificing the least amount of time, this is called the best rate of climb. Remember not to confuse it with Vx, the best angle of climb. 

    Climbing at Vy allows pilots to maximize their climb while sacrificing the least amount of time, this is called the best rate of climb. Remember not to confuse it with Vx, the best angle of climb. 

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  4. 4) In straight and level, unaccelerated flight, the sum of opposing forces acting on the aircraft is always ___.
    Boldmethod

    In steady flight, the sum of thrust, drag, weight, and lift is always zero. There can be no unbalanced forces in steady, straight flight based upon Newton's Third Law. Note: this does not mean the four forces are equal. It means the opposing forces are equal to, and thereby cancel, the effects of each other. 

    In steady flight, the sum of thrust, drag, weight, and lift is always zero. There can be no unbalanced forces in steady, straight flight based upon Newton's Third Law. Note: this does not mean the four forces are equal. It means the opposing forces are equal to, and thereby cancel, the effects of each other. 

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  5. 5) If you load an aircraft tail-heavy, the center of gravity (CG) will be aft and the nose will more easily pitch ___ than if it were in a forward loading configuration.
    Boldmethod

    When an aircraft is configured with an aft load, the nose will pitch upwards more easily.

    When an aircraft is configured with an aft load, the nose will pitch upwards more easily.

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  6. 6) Lowering flaps increases:
    Boldmethod

    Lowering flaps increases camber, lift and drag.

    Lowering flaps increases camber, lift and drag.

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  7. 7) During a soft field takeoff you begin climbing out just above stall speed, and suddenly your climb rate declines. Why?
    Boldmethod

    While in ground effect, you can fly and climb at a lower airspeed; during a soft field takeoff, stay in ground effect and build speed before you climb out.  Ground effect is caused by a reduction in induced drag when your plane is within approximately 1 wingspan or less of the runway. 

    While in ground effect, you can fly and climb at a lower airspeed; during a soft field takeoff, stay in ground effect and build speed before you climb out.  Ground effect is caused by a reduction in induced drag when your plane is within approximately 1 wingspan or less of the runway. 

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  8. 8) Typically, a wing is designed to stall from ___ to ___, resulting in more effective aileron control during stall.
    Boldmethod

    Typically, a wing is designed to stall from root to tip, resulting in more effective aileron control during stall.

    Typically, a wing is designed to stall from root to tip, resulting in more effective aileron control during stall.

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Well, that was a tough quiz...

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Not bad.

You scored % Well done.

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Looks like you're ahead of the power curve on this one.

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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