Chapter 1 Flashcards
The angle between the chord line of an airfoil and the relative wind is known as the angle of …
Attack
Angle of attack is defined as the angle between the chord line of an airfoil and the…
Direction of the relative wind
The angle of attack at which an airfoil stalls will…
Remain the same regardless of gross weight
What is the effect of advancing throttle in flight?
Airspeed will remain relatively constant but the aircraft will climb
The term Angle of Attack is defined as the angle…
Between the wing chord line and the relative wind
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
The four forces acting on an airplane in flight are
Life, weight, thrust, and drag
What is the purpose of the rudder on an airplane
To control yaw
What is the relationship of life, drag, thrust, and weight when the airplane is in straight and level flight?
Life equals weight and thrust equals drag
When are the four forces that act on an airplane in equilibrium?
During unaccelerated flight
The best speed to use for a glide is one that will result in the greatest glide distance for a given amount of
Altitude
Climb performance depends upon the
Reserve power or thrust
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 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
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
Difficult 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
Changes in the center of pressure of a wing affect the aircraft’s
Aerodynamic balance and controllability
The amount of excess load that can be imposed on the wing of an airplane depends upon the
Speed of the airplane