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30 Cards in this Set

  • Front
  • Back
The 4 forces acting on an airplane in flight are
lift, weight, thrust, and drag
When are the 4 forces that act on an airplane in equilibrium?
During unaccelerated flight
The term "angle of attack" is defined as the angle
between the wing chord line and the relative wind
What is the relationship of life, drag, thrust, and weight when the airplane is in straight-and-level flight?
Lift equals weight and thrust equals drag
One of the main functions of flaps during approach and landing is to
increase the angle of descent without increasing airspeed
What is one purpose of wing flaps?
To enable the pilot to make steeper approaches to a landing without increasing the airspeed
The angle of attack at which an airplane wing stalls will
remain the same regardless of gross weight
What is ground effect?
The result of 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
Ground effect is most likely to result in which problem?
Becoming airborne before reaching recommended takeoff speed
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
Changes in the center of pressure of a wing affect the aircraft's
aerodynamic balance and controllability
An airplane said to be inherently stable will
require less effort to control
What determines the longitudinal stability of an airplane?
The location of the CG with respect to the center of lift
What causes an airplane (except a T-Tail) to pitch nosedown when power is reduced and controls are not adjusted?
The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced
What is the purpose of the rudder on an airplane?
To control yaw
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
Loading an airplane to the most aft CG will cause the airplane to be
less stable at all speeds
In what condition must an aircraft be placed in order to spin?
During a spin to the left, which wing(s) is/are stalled?
Both wings are stalled
In what flight condition is torque effect the greatest 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 the right, producing more thrust than the ascending blade on the left
When does P-factor cause the airpland to yaw to the left?
When at high angles of attack
The amount of excess load that can be imposed on the wing of an airplane depends upon the
speed of the airplane
Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?
What force makes an airplane turn?
The horizontal component of lift
During an approach to a stall, an increases load factor will cause an airplane to
stall at a higher airspeed
The most important rule to remember in the event of a power failure after becoming airborne is to
immediately establish the proper gliding attitude and airspeed
What are the 4 flight fundamentals involved in maneuvering an aircraft?
straight-and-level flight, turns, climbs, and descents