Aircraft Structure QZ1

Question 1

What is one purpose of wing flaps?
1. To increase wing area to vary the lift.
2. To relieve the pilot of maintaining continuous pressure on the controls.
3. To enable the pilot to make steeper approaches to a landing without increasing the airspeed.

Answer 1

3. To enable the pilot to make steeper approaches to a landing without increase the airspeed

Explanation: Flaps allows production of greater lift and permitting lower approach and landing speeds, producing greater drag and permitting a steeper descent angle, increasing forward visibility by allowing a lower pitch, and reducing the length of the landing roll.

Question 2

The elevator controls movement around which axis?
1. Lateral
2. Longitudinal
3. Vertical

Answer 2

1. Lateral

Explanation: The elevator controls pitch about the lateral axis.

Question 2

Trim systems are designed to do what?
1. They are used during approach and landing to increase wing lift
2. They relieve the pilot of the need to maintain constant back pressure on the flight controls.
3. They move in the opposite direction from one another to control roll.

Answer 2

2. They relieve the pilot of the need to maintain constant back pressure on the flight controls.

Explanation: Trim systems are used to relieve the pilot of the need to maintain constant pressure on the flight controls, and usually consist of flight deck controls and small hinged devices attached to the trailing edge of one or more of the primary flight control surfaces.

Question 2

One of the main functions of flaps during approach and landing is to
1. Increase the angle of descent without increasing the airspeed.
2. Permit a touchdown at a higher indicated airspeed.
3. Decrease the angle of descent without increasing the airspeed.

Answer 2

1. Increase the angle of descent without increasing the airspeed.

Explanation: Flaps allows production of greater lift and permitting lower approach and landing speeds, producing greater drag and permitting a steeper descent angle, increasing forward visibility by allowing a lower pitch, and reducing the length of the landing roll.

Question 3

Which statement is true concerning primary flight controls?
1. The effectiveness of each control surface increases with speed because there is more airflow over them.
2. Only when all three primary flight controls move in sequence do the airflow and pressure distribution change over and around the airfoil.
3. Primary flight controls include ailerons, rudder, elevator, and trim systems.

Answer 3

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

Explanation: At low airspeeds, the controls usually feel soft and sluggish, and the aircraft responds slowly to control applications. At higher airspeeds, the controls become increasingly firm and aircraft response is more rapid.

Question 3

What is the purpose of the rudder on an airplane?
1. To control overbanking tendency.
2. To control roll.
3. To control yaw.

Answer 3

3. To control yaw.

Explanation: The rudder controls movement of the aircraft about its vertical axis. This motion is called yaw.

Question 4

Which of the following is true concerning flaps?
1. Flaps are high drag devices deployed from the wings to reduce lift.
2. Flaps are attached to the leading edge of the wing and are used to increase wing lift.
3. Flaps allow an increase in the angle of descent without increasing airspeed.

Answer 4

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

Explanation: Flaps allows production of greater lift and permitting lower approach and landing speeds, producing greater drag and permitting a steeper descent angle, increasing forward visibility by allowing a lower pitch, and reducing the length of the landing roll.

Question 5

The four forces acting on an airplane in flight are
1. Lift, weight, thrust, and drag.
2. Lift, gravity, power, and friction.
3. Lift, weight, gravity, and thrust.

Answer 5

1. Lift, weight, thrust, and drag.

Explanation: Four forces act upon an aircraft in relation to straight-and­ level, unaccelerated flight. These forces are thrust, lift, weight, and drag.

Question 6

Which is not a primary flight control surface?
1. Stabilator
2. Ailerons
3. Flaps

Answer 6

3. Flaps

Explanation: Secondary flight control systems may consist of wing flaps, leading edge devices, spoilers, and trim systems.

Question 7

Which device is a secondary flight control?
1. Stabilators
2. Ailerons
3. Spoilers

Answer 7

3. Spoilers

Explanation: Secondary flight control systems may consist of wing flaps, leading edge devices, spoilers, and trim systems.