Chapter 2 Flashcards
One of the main functions of flaps during approach and landing is to?
A. Decrease the AOA without increasing the airspeed
B. Permit a touchdown at a higher indicated airspeed
C. Increase the AOA of descent without increasing the airspeed
C. Increase the AOA of descent without increasing the airspeed
What is the purpose of the rudder on an airplane?
A. To control yaw
B. To control over banking tendency
C. To control roll
A. To control yaw
Which is not a primary flight control surface?
A. Flaps
B. Stabilator
C. Ailerons
A. Flaps
The elevator controls movement around which axis?
A. Longitudinal
B. Lateral
C. Vertical
B. Lateral
Which statement is true concerning primary flight controls?
A. The effectiveness of each control surface increases with speed because there is more airflow over them.
B. Only when all three primary flight controls move in sequence do the airflow and pressure distribution change over and around the airfoil
C. Primary flight controls include ailerons, rudder, elevator, and trim systems
A. The effectiveness of each control surface increases with the speed because there is more airflow over them
Which of the following is true concerning flaps?
A. Flaps are attached to the leading edge of the wing and are used to increase wing lift
B. Flaps allow an increase in the angle of descent without increasing airspeed
C. Flaps are high drag devices deployed fro, the wings to reduce lift
B. Flaps allow an increase in the angle of descent without increasing airspeed
Which device is secondary flight control?
A. Spoilers
B. Ailerons
C. Stabilators
A. Spoilers
Trim systems are designed to do what?
A. They relieve the pilot of the need to maintain constant back pressure on the flight controls
B. They are used during approach and landing to increase wing lift
C. The move in the opposite direction from one another to control roll
A. They relieve the pilot of the need to maintain constant back pressure on the flight controls
When are the four forces that act on an airplane in equilibrium?
A. During unaccelerated level flight
B. When the aircraft is accelerating
C. When the aircraft is at rest on the ground?
A. During unaccelerated level flight
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 thrust
C. Lift and weight equal thrust and drag
A. Lift equals weight and thrust equals drag
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 downward
C. Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface
C. Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface
The term of “angle of attack” is defined as the angle?
A. Between the wing chord line and the relative wind
B. Between the airplanes climb angle and the horizon
C. Formed by the longitudinal axis of the airplane and the chord line of the wing
A. Between the wing chord line and the relative wind
Angle of attack is defined as the angle between the chord line of an airfoil and the?
A. Direction of the relative wind
B. Pitch angle of an airfoil
C. Rotor plane of rotation
A. Direction of the relative wind
The acute angle A is the angle of?
A. Incidence
B. Attack
C. Dihedral
B. Attack
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
B. Attack
The angle of attack at which an airplane wing stalls?
A. Increase if the CG is moved forward
B. Change with an increase in gross weight
C. Remain the same regardless of gross weight
C. Remain the same regardless of gross weight
As altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will?
A. Decrease as the true airspeed decreases
B. Decrease as the true airspeed increases
C. Remain the same regardless of altitude
C. Remain the same regardless of altitude
In what flight condition must an aircraft be placed in order to spin?
A. Partially stalled with one wing low
B. In a steep diving spiral
C. Stalled
C. Stalled
During a spin to the left, which wings is/are stalled?
A. Both wings are stalled
B. Neither wing is stalled
C. Only the left wing is stalled
A. Both wings are stalled
How will frost on the winds of an airplane affect takeoff performance?
A. Frost will disrupt the smooth Flow of air over the wing, adversely affecting its lifting capability
B. Frost will change the camber of the wing, increasing its lifting capability
C. Frost will cause the airplane to become airborne with a higher angle of attack, decreasing the stall speed
A. Frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability
Why is frost considered hazardous to flight?
A. Frost changes the basic aerodynamic shape of the airfoils, thereby increasing lift
B. Frost slows the airflow over the airfoils, thereby increasing control effectiveness
C. Frost spoils the smooth flow of air over wings, thereby decreasing lifting capability
C. Frost spoils the smooth flow of air over the wings, thereby decreasing lifting capability
How does frost affect the lifting surfaces of an airplane on takeoff?
A. Frost may prevent the airplane from becoming airborne at normal takeoff speed
B. Frost will change the camber of the wing, increasing lift during takeoff
C. Frost may cause the airplane to become airborne with a lower angle of attack at a lower indicated airspeed?
A. Frost may prevent the airplane from becoming airborne at normal takeoff 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
War 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 the 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
B. Induced drag decreases, therefore, any excess speed at the point of flare may cause considerable floating
An aircraft leaving ground effect during takeoff will?
A. Experience a reduction in ground friction and require a slight power reduction
B. Experience an increase in induced drag and a decrease in performance
C. Require a lower angle of attack to maintain the same lift coefficient
B. Experience an increase in induced drag and a decrease in performance
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
B. Becoming airborne before reaching recommended takeoff speed
What force makes an airplane turn?
A. The horizontal component of lift
B. The vertical component of lift
C. Centrifugal force
A. The horizontal component of lift
An airplane said to be inherently stable will?
A. Be difficult to stall
B. Require less effort to control
C. Not spin
B. Require less effort to control
What determines the longitudinal stability of an airplane?
A. The location of the CG with respect to the center of lift
B. The effectiveness of the horizontal stabilizer, rudder, and rudder trim tab
C. The relationship of thrust and lift to weight and drag
A. The location of the CG with respect to the center of lift
Changes in the center of pressure of a wing affect the aircrafts?
A. Lift/drag ratio
B. Lifting capacity
C. Aerodynamic balance and controllability
C. Aerodynamic balance and controllability
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. A longer takeoff run
B. Difficulty in recovering from a stalled condition
C. Stalling at higher than normal airspeed
B. Difficulty in recovering from a stalled condition
What causes an airplane to pitch nose down when power is reduced and controls are not adjusted?
A. The CG shifts forward when thrust and drag are reduced
B. The downward on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced
C. When thrust is reduced to less than weight, lift is also reduced and the wings can no longer support weight
B. The downward on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced
Loading an airplane to the most aft CG will cause the airplane to be?
A. Less stable at all speeds
B. Less stable at slow speeds, but more stable at High speeds
C. Less stable at high speeds, but more stable at low speeds
A. Less stable at all speeds