SU 1: Airplanes and Aerodynamics

What is one purpose of wing flaps?

• To enable the pilot to make steeper approaches to a landing without increasing airspeed.

• To relieve the pilot of maintaining continuous pressure on the controls

• To decrease wing area to vary the lift.

One of the main functions of flaps during approach and landing is to_?

• Decrease the angle of descent without increasing airspeed

• Permit a touchdown at a higher indicated airspeed

• Increase the angle of descent without increasing airspeed

What is the purpose of the rudder on an airplane?

• To control yaw

• To control overbanking tendancy

• To control roll

Which is not a primary flight control surface?

• Flaps

• Stabilator

• Ailerons

The elevator controls movement around which axis?

• Longitudinal

• Lateral

• Vertical

Which statement is true concerning primary flight controls?

• The effectiveness of each control surface increases with speed because there is more airflow over them

• Only when all three primary flight controls move in sequence do the airflow and pressure distribution change over and around the airfoil

• Primary flight controls include ailerons, rudder, elevator, and trim systems

Which of the following is true concerning flaps?

• Flaps are attached to the leading edge of the wing and are used to increase wing lift

• Flaps allow an increase in the angle of descent without increasing airspeed

• Flaps are high drag devices deployed from the wings to reduce lift

Which device is a secondary flight control?

• Spoilers

• Ailerons

• Stabilators

Trim systems are designed to do what?

• They relieve the pilot of the need to maintain constant pressure on the flight controls

• They are used during approach and landing to increase wing lift

• They move in the opposite direction from one another to control roll

The four forces acting on an airplane in flight are _?

• lift, weight, thrust, and drag

• lift, weight, gravity, and thrust

• lift, gravity, power, and friction