Aerodynamics and Theory of Flight--Questions

1. The force during flight that is exerted through the centre of gravity, perpendicular to the earth’s surface is
   1. lift.
   2. weight.
   3. thrust.
   4. drag.
2. The force during flight exerted through the centre of pressure, perpendicular to the relative wind is
   1. lift.
   2. weight.
   3. thrust.
   4. drag.
3. Drag is opposed to
   1. lift.
   2. weight.
   3. thrust.
   4. gravity.
4. A straight line between the leading edge and trailing edge of an airfoil is referred to as
   1. camber.
   2. the pressure point.
   3. washout.
   4. chord.
5. With respect to an airfoil, the upper _______ is greater than the lower _______.
   1. camber.
   2. the pressure point.
   3. washout.
   4. chord.
6. Bernoulli’s Theory for lift is best described as follows:
   1. the downward force caused by an airfoil passing through the air produces an equal but opposite upward reaction force.
   2. an accelerated fluid or gas produces adjacent low pressure.
   3. lift varies with the angle of incidence of an airfoil.
   4. the four forces of flight in a balanced condition, and at right angles to each other will produce a balanced coupling capable of flight.
7. Approximately one-half of the lift generated by an air foil is created by
   1. adverse yaw.
   2. dihedral.
   3. asymmetric thrust.
   4. ram effect.
8. An airfoil stalls when the _____ exceeds _____.
   1. angle of attack; 15°.
   2. angle of incidence; 20°.
   3. angle of attack; 20°.
   4. angle of incidence; 15°.
9. When weight exceeds lift, the aircraft will
   1. climb.
   2. descend.
   3. stall.
   4. autorotate.
10. Induced drag increases with
    1. an increase in speed.
    2. angle of incidence.
    3. angle of attack.
    4. laminar flow.
11. Induced drag decreases with
    1. a decrease in speed.
    2. angle of incidence.
    3. angle of attack.
    4. laminar flow.
12. Parasitic drag increases with
    1. an increase in speed.
    2. angle of incidence.
    3. angle of attack.
    4. laminar flow.
13. Turbulent flow increases with
    1. speed.
    2. angle of incidence.
    3. angle of attack.
    4. laminar flow.
14. A factor of flight which the pilot cannot control or change is
    1. speed.
    2. angle of incidence.
    3. angle of attack.
    4. laminar flow.
15. During the movement of roll, the wings produce _____ which must be controlled through the use of
    1. autorotation; flaps.
    2. aileron drag; rudder.
    3. differential lift; ailerons.
    4. adverse yaw; ailerons.
16. The point of transition is the point at which
    1. laminar flow becomes turbulent.
    2. the critical angle of attack is exceeded and a stall occurs.
    3. parasitic drag exceeds asymmetric thrust.
    4. an incipient spin becomes a fully developed spin.
17. A stall can occur at any
    1. speed.
    2. angle of attack
    3. instant weight exceeds lift.
    4. section along airfoil variation.
18. To pacify the stall characteristics of an aeroplane, a common design feature of an airfoil is
    1. differential camber.
    2. the use of wing fences.
    3. sweep.
    4. washout.
19. Stall strips produce
    1. imbalance lift in a slow flight condition.
    2. premature turbulent flow.
    3. directional stability.
    4. lateral stability.
20. An aeroplane with positive stability will
    1. stall at an angle of incidence is that greater than the critical angle of incidence.
    2. stall at an angle of attack is that greater than the critical angle of attack.
    3. will return to straight and level flight when it is disturbed by turbulence.
    4. have the centre of gravity in equilibrium with the centre of pressure.
21. Wing tip vortices are evidence of
    1. aileron drag.
    2. parasitic drag.
    3. induced drag.
    4. skin friction drag.
22. Horizontal stabilizers that produce a downward pressure during flight are a feature of
    1. directional stability.
    2. positive lateral stability.
    3. negative lateral stability.
    4. longitudinal stability.
23. Vertical stabilizers create
    1. directional stability.
    2. positive lateral stability.
    3. negative lateral stability.
    4. longitudinal stability.
24. Dihedral creates
    1. directional stability.
    2. positive lateral stability.
    3. negative lateral stability.
    4. longitudinal stability.
25. Asymmetric thrust is pronounced
    1. during a descent.
    2. during a climb.
    3. at high speeds.
    4. during the transition point.
26. Which of the following is corrected with the use of right rudder:
    1. precession
    2. torque
    3. slipstream
    4. all of the above.
    5. answers a) and c) above.
    6. none of the above.
27. Which of the following is corrected with the use of left rudder:
    1. precession
    2. torque
    3. slipstream
    4. all of the above.
    5. answers 1) and 2) above.
    6. none of the above.
28. To climb to altitude in the shortest period of time, a pilot would maintain an airspeed so as to produce
    1. the best angle of climb.
    2. the best rate of climb.
    3. the highest speed on the white arch depicted on the Airspeed Indicator.
    4. en route climb.
29. A rearward C of G loading will
    1. increase stability.
    2. decrease stability.
    3. increase stall speed.
    4. reduce aileron drag.
30. A forward C of G loading will
    1. increase stall speed.
    2. decrease stall speed.
    3. decrease stability.
    4. increase aileron drag.

© 2007 David L. Parry