Quiz 3: Aerodynamics & Flight Controls

Which of the following is true concerning flaps? A. Flaps allow an increase in the angle of descent without increasing airspeed B. Flaps are attached to the leading edge of the wing and are used to increase wing lift C. Flaps are high drag devices deployed from the wings to reduce lift

A. Flaps allow an increase in the angle of descent without increasing airspeed

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 and weight equal thrust and drag C. Lift, drag, and weight equal thrust

A. Lift equals weight and thrust equals drag

In what flight condition are torque effects more pronounced in a single-engine airplane? A. Low airspeed, high power, high angle of attack B. Low airspeed, low power, low angle of attack C. High airspeed, high power, high angle of attack

A. Low airspeed, high power, high angle of attack

The angle of attack at which an airplane wing stalls will A. Remain the same regardless of gross weight B. Change with an increase in gross weight C. Increase if the CG if moved forward

A. Remain the same regardless of gross weight

During an approach to a stall, an increased load factor will cause the aircraft to A. Stall at a higher speed B. Have a tendency to spin C. Be more difficult to control

A. Stall at a higher speed

What is 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

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

What is the purpose of the rudder on an airplane? A. To control yaw B. To control roll C. To control overbanking tendency

A. To control yaw

What is the effect of advancing the throttle in flight? A.Both aircraft groundspeed and angle of attack will increase B. Airspeed will remain relatively constant but the aircraft will climb C. The aircraft will accelerate, which will cause a turn to the right

A.Both aircraft groundspeed and angle of attack will increase

Ground effect is most likely to result in which problem? A. Inability to get airborne even though airspeed is sufficient for normal takeoff needs B. Becoming airborne before reaching recommended takeoff speed C. Settling to the surface abruptly during landing

B. Becoming airborne before reaching recommended takeoff speed

During a spin to the left, which wing(s) is/are stalled? A. Neither wing is stalled B. Both wings are stalled C. Only the left wing is stalled

B. Both wings are stalled

What force makes an airplane turn? A. The vertical component of lift B. Centrifugal force C. The horizontal component of lift

B. Centrifugal force

An airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. One undesirable flight characteristic a pilot might experience with this airplane would be A. Stalling at a higher-than-normal airspeed B. Difficulty in recovering from a stalled condition C. A longer takeoff run

B. Difficulty in recovering from a stalled condition

The left turning tendency of an airplane caused by P-factor is the result of the A. Clockwise rotation of the engine and the propeller turning the airplane counterclockwise B. Propeller blade descending on the right, producing more thrust than the ascending blade on the left C. Gyroscopic forces applied to the rotating propeller blades acting 90 degrees in advance of the point the force was applied

B. Propeller blade descending on the right, producing more thrust than the ascending blade on the left

What determines longitudinal stability of an airplane? A. The relationship of thrust and lift to weight and drag B. The location of the CG with respect to the center of lift C. The effectiveness of the horizontal stabilizer, rudder, and rudder trim tab

B. The location of the CG with respect to the center of lift

If an airplane weighs 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45 degree banked turn while maintaining altitude? A. 7,200 pounds B. 4,500 pounds C. 6,750 pounds

C. 6,750 pounds

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

C. Aerodynamic balance and controllability

What must a pilot be aware of as a result of ground effect? A. A full stall landing will require less up elevator deflection than would a full stall when done free of ground effect B. Wingtip vortices increase creating wake turbulence problems for arriving and departing aircraft C. Induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating

C. Induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating

An airplane said to be inherently stable will A. Not spin B. Be difficult to stall C. Require less effort to control

C. Require less effort to control

In what flight condition must an aircraft be placed in order to spin? A. In a steep diving spiral B. Partially stalled with one wing low C. Stalled

C. Stalled

What causes an airplane (except a T-tail) to pitch nosedown when power is reduced and controls are not adjusted? A. When thrust is reduced to less than weight, lift is also reduced and the wings can no longer support the weight B. The CG shifts forward when thrust and drag are reduced C. The downwash on the elevators from the propeller slipstream is reduced and the elevator effectiveness is reduced

C. The downwash on the elevators from the propeller slipstream is reduced and the elevator effectiveness is reduced