Principle of Flight Flashcards
What is one purpose of wing flaps?
a) To enable the pilot to make steeper approaches to a landing without increasing the airspeed.
b) To relieve the pilot of maintaining continuous pressure on the controls.
c) To decrease wing area to vary the lift.
a) 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
a) Decrease the angle of descent without increasing the airspeed.
b) Permit a touchdown at a higher indicated airspeed.
c) Increase the angle of descent without increasing the airspeed.
c) Increase the angle of descent without increasing the airspeed.
What is the purpose of the rudder on an airplane?
a) To control yaw.
b) To control overbanking 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 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 from the wings to reduce lift.
b) Flaps allow an increase in the angle of descent without increasing airspeed.
Which device is a 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 pressure on the flight controls.
b) They are used during approach and landing to increase wing lift.
c) They move in the opposite direction from one another to control roll.
a) 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
a) lift, weight, thrust, and drag.
b) lift, weight, gravity, and thrust.
c) lift, gravity, power, and friction.
a) lift, weight, thrust, and drag.
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 equals 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 travelling faster over the curved upper surface of an airfoil causes lower pressure on the top surface.
c) Air travelling faster over the curved upper surface of an airfoil causes lower pressure on the top surface.
Refer to the figure below. The acute angle A is the angle of
