Aircraft/Aerodynamics Quiz #1

There are at least 2 ways to practice this quiz. One way is to check your answer by clicking the "Check answer" button. This will give you immediate feedback regarding specific questions. The other option is to simply answer all the questions as a test and "Flip the switch" or "Press the button" (grade the test) after the last question to receive a test score. You can then check each question individually to see which questions were missed. If you have any problems or suspect an error, feel free to contact me anytime.

Thank you and good luck.
Eric Morris
President
Sheffield School of Aeronautics

return to test index

 

1. When are inboard ailerons normally used?

Low-speed flight only.
High-speed flight only.
Low-speed and high-speed flight.

2. When are outboard ailerons normally used?

Low-speed flight only.
High-speed flight only.
Low-speed and high-speed flight.

3. Which of the following is considered a primary flight control?

Slats.
Elevator.
Dorsal fin.

4. Which of the following is considered an auxiliary flight control?
Ruddervator.
Upper rudder.
Leading-edge flaps.

5. What is the purpose of a control tab?

Move the flight controls in the event of manual reversion.
Reduce control forces by deflecting in the proper direction to move a primary flight control.
Prevent a control surface from moving to a fulldeflection position due to aerodynamic forces.

6. What is the purpose of an anti-servo tab?
Move the flight controls in the event of manual reversion.
Reduce control forces by deflecting in the proper direction to move a primary flight control.
Prevent a control surface from moving to a full deflection position due to aerodynamic forces.

7. What is the purpose of a servo tab?

Move the flight controls in the event of manual reversion.
Reduce control forces by deflecting in the proper direction to move a primary flight control.
Prevent a control surface from moving to a full deflection position due to aerodynamic forces.

8. Which is a purpose of leading-edge flaps?
Increase the camber of the wing.
Reduce lift without increasing airspeed.
Direct airflow over the top of the wing at high angles of attack.

9. What is a purpose of flight spoilers?

increase the camber of the wing.
Reduce lift without increasing airspeed.
Direct airflow over the top of the wing at high angles of attack.

10. For which purpose may flight spoilers be used?
Reduce the wings' lift upon landing.
Increase the rate of descent without increasing aerodynamic drag.
Aid in longitudinal balance when rolling an airplane into a turn.

11. Which is a purpose of leading-edge slats on high-performance wings?
Increase lift at relative slow speeds.
Improve aileron control during low angles of attack.
Direct air from the low-pressure area under the leading edge along the top of the wing.

12. Which is a purpose of leading-edge slats on high-performance wings?
Decrease lift at relative slow speeds.
Improve aileron control during low angles of attack.
Direct air from the high-pressure area under the leading edge along the top of the wing.

13. Which is a purpose of ground spoilers?

Reduce the wings' lift upon landing.
Aid in rolling an airplane into a turn.
increase the rate of descent without gaining airspeed.

14. Which direction from the primary control surface does an anti-servo tab move?

Same direction.
Opposite direction.
Remains fixed for all positions.

15. Which direction from the primary control surface does a servo tab move?

Same direction.
Opposite direction.
Remains fixed for all positions.

16. Which direction from the primary control surface does an elevator adjustable trim tab move when the control surface is moved?

Same direction.
Opposite direction.
Remains fixed for all positions.

17. What is the purpose of an elevator trim tab?

Provide horizontal balance as airspeed is increased to allow hands-off flight.
Adjust the speed tail load for different airspeeds in flight allowing neutral control forces.
Modify the downward tail load for various airspeeds in flight eliminating flight-control pressures.

18. Which is a purpose of wing-mounted vortex generators?

Reduce the drag caused by supersonic flow over portions of the wing.
increase the onset of drag divergence and aid in aileron effectiveness at high speed.
Break the airflow over the wing so the stall will progress from the root out to the tip of the wing.

19. Why do some airplanes equipped with inboard/ outboard ailerons use the outboards for slow flight only?

increased surface area provides greater controllability with flap extension.
Aerodynamic loads on the outboard ailerons tend to twist the wingtips at high speeds.
Locking out the outboard ailerons in high-speed flight provides variable flight control feel.

20. Which of the following are considered primary flight controls?

Tabs.
Flaps.
Outboard ailerons.

Flip the switch to receive your score
Toggle button