Gleim Su 1 Flashcards
What is one purpose of wing flaps
To enable the pilot to make steeper approaches to a landing without increasing the airspeed
One of the main functions of flaps during approach and landing is to
Increase the angle of descent without increasing the airspeed
What is the purpose of the rudder on an airplane
To control yaw
Which is not a primary flight control surface
Flaps
The elevator controls movement around which axis
Lateral
Which statement is true concerning primary flight controls
The effectiveness of each control surface increases with speed because there is more airflow over them
Which of the following is true concerning flaps
Flaps allow an increase in the angle of descent without increasing airspeed
Which device is a secondary flight control
Spoilers
Trim systems are designed to do what
They relieve the pilot of the need to maintain constant pressure on the flight controls
The four forces acting on an airplane in flight are
Lift, weight, thrust, and drag
When are the four that act on an airplane in equilibrium?
During unaccelerated level flight
What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?
Lift equals weight and thrust equals drag
Which statement relates to Bernoulli’s principle?
Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface
(Refer to figure 1 below.) The acute angle A is the angle of
attack
The term “angle of attack” is defined as the angle between the
chord line of the wing and the relative wind
The angle between the chord line of an airfoil and the relative wind is known as the angle of?
attack
The angle of attack at which an airplane wing stalls will
remain the same regardless of gross weight
As altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will.
Remain the same regardless of altitude
In what flight condition must an aircraft be placed in order to spin?
Stalled
During a spin to the left, which wing(s) is/are stalled?
Both wings are stalled
What is ground effect?
The result of the interference of the surface of the Earth with the airflow patterns about an airplane
Floating caused by the phenomenon of ground effect will be most realized during an approach to land when at?
Less than the length of the wingspan above the surface
What must a pilot be aware of as a result of ground effect?
Induced drag decreases; therefore, any excess speed at the point of flare may cause considerable floating
An aircraft leaving ground effect during takeoff will
experience an increase in induced drag and a decrease in performance
Ground effect is most likely to result in which problem?
Becoming airborne before reaching recommended takeoff speed
What force makes an airplane turn?
The horizontal component of lift
What determines the longitudinal stability of an airplane?
the location of the CG with respect to the center of lift
An airplane said to be inherently stable will
require less effort to control
Changes in the center of pressure of a wing affect the aircraft’s
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
difficulty in recovering from a stalled condition
What causes an airplane (expect a T-tail) to pitch nosedown when power is reduced and controls are no adjusted?
The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced
What is the effect of advancing the throttle in flight?
Both aircraft groundspeed and angle of attack will increase
Loading an airplane to the most aft CG will cause the airplane to be
less stable at all speeds
An airplane loaded with the Center of Gravity (CG) rear of the aft CG limit could
increase the likelihood of inadvertent overstress.
In what flight condition are torque effects more pronounced in a single-engine airplane?
Low airspeed, high power, high angle of attack
The left turning tendency of an airplane caused by P-factor is the result of the
propeller blade descending on the right producing more thrust than the ascending
When does P-factor causes the airplane to yaw to the left
When at high angles of attack
Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?
Turns
(Refer to Figure 2 below.) If an airplane weights 3,300 pounds, what approximate weight would the airplane structure be required to support during a 30 degree banked turn while maintaining altitude?
3,960 pounds
(Refer to Figure 2 below.) If an airplane weights 2,300 pounds, what approximate weight would the airplane structure be required to support during a 60 Deg banked turn while maintaining altitude?
4,600 pounds
(Refer to Figure 2 below.) If an airplane weights 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45 deg banked turn while maintaining altitude
6,750 pounds
The amount of excess load that can be imposed on the wing of an airplane depends upon the?
speed of the airplane
During an approach to a stall, an increased load factor will cause the aircraft to
stall at a higher airspeed
structural damage or failure is more likely to occur in smooth air at speeds above
Vne
Limit load factor is the ratio of
Maximum sustainable load to the gross weight of the airplane
(Refer to Figure 72 below.) A positive load factor of 2 at 80 mph would cause the airplane to
stall
(Refer to Figure 72 below.) What load factor would be created if positive 15 feet per second gusts were encountered at 120 mph?
2.0
(refer to Figure 72 beow.) The airspeed indicated by points A and J is
normal stall speed
