Aerodynamic Principles Of Flight: Trivia Facts Quiz

15 Questions | Total Attempts: 225

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Aerodynamic Principles Of Flight: Trivia Facts Quiz

Welcome to the trivia quiz that will test you on Aerodynamic Principles of Flight. It is drawn from Aerodynamic Principles Section A Four Forces of flight. Do you think that you had a proper understanding of the course to tackle it? Do give it a try and get to see what parts of it you have already forgotten. All the best!


Questions and Answers
  • 1. 
    The four forces acting on an airplane in flight are
    • A. 

      Lift, weight, thrust, and drag

    • B. 

      Lift, weight, gravity, and thrust

    • C. 

      Lift, gravity, power, and friction.

  • 2. 
    When are the four forces that act on an airplane in equilibrium?
    • A. 

      During unaccelerated flight.

    • B. 

      When the aircraft is accelerating.

    • C. 

      When the aircraft is at rest on the ground.

  • 3. 
    (Refer to figure 1.) The acute angle A is the angle of  
    • A. 

      Incidence

    • B. 

      Attack

    • C. 

      Dihedral

  • 4. 
    The term "angle of attack" is defined as the angle
    • A. 

      Between the wing chord line and the relative wind

    • B. 

      Between the airplane's climb angle and the horizon

    • C. 

      Formed by the longitudinal axis of the airplane and the chord line of the wing.

  • 5. 
    What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?
    • A. 

      Lift, equals weight and thrust equals drag

    • B. 

      Lift, drag, and weight equal drag.

    • C. 

      Lift and weight equal thrust and drag.

  • 6. 
    One of the main function of flaps during approach and landing is to:
    • A. 

      Decrease the angle of descent without increasing the airspeed.

    • B. 

      Permit a touchdown at a higher indicated airspeed

    • C. 

      Increase teh angle of descent without increasing the airspeed.

  • 7. 
    What is the purpose of wing flaps?
    • A. 

      To enabe the pilot to make steeper approaches to a landing without increasing the airspeed.

    • B. 

      To relieve the pilot of maintaining continuous pressure on the controls.

    • C. 

      To decrease wing area to vary the lift.

  • 8. 
    The angle of attack at which an airplane wing stalls will
    • A. 

      Increase if the CG is moved forward

    • B. 

      Change with an increase in gross weight

    • C. 

      Remain the same regardless of gross weight.

  • 9. 
    What is the ground effect?
    • A. 

      The result of the interference of the surface of the Earth with the airflow patterns about an airplane.

    • B. 

      The result of an alteration in airflow patterns increasing induced drag about the wings of an airplane.

    • C. 

      The result of the disruption of the airflow patterns about the wings of an airplane to the point where the wings will no longer support the airplane in flight.

  • 10. 
    Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at:
    • A. 

      Less than the length of the wingspan above the surface.

    • B. 

      Twice the length of the wingspan above the surface.

    • C. 

      A higher-than-normal angle of attack.

  • 11. 
    What must a pilot be aware of as a result of ground effect?
    • A. 

      Wingtip vortices increase creating wake turbulence problems for arriving and departing aircraft

    • B. 

      Induced drag decreases: therefore, any excess speed at teh point of flare may cause considerable floating

    • C. 

      A full stall landing will require less up elevator deflection than would a full stall when done free of ground effect.

  • 12. 
    Ground effect is most likely to result in which problem?
    • A. 

      Settling to the surface abruptly during landing

    • B. 

      Becoming airborne before reaching recommended takeoff speed.

    • C. 

      Inability to get airborne even though airspeed is sufficient for normal takeoff needs.

  • 13. 
    Which statement relates to Bernoulli's principle?
    • A. 

      For every action there is an equal and opposite reaction

    • B. 

      An additional upward force is generated as the lower surface of the wing deflects air downwards.

    • C. 

      Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface.

  • 14. 
    The angle between the chord line of an airfoil and the relative wind is known as the angle of 
    • A. 

      Lift

    • B. 

      Attack

    • C. 

      Incidence

  • 15. 
    Changes in the center of pressure of a wing affect the aircraft's
    • A. 

      Lift/drag ratio

    • B. 

      Lifting capacity

    • C. 

      Aerodynamic balance and controllability

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