Longitudinal Control

Question 1

What happens to the elevator when you pull back on the stick?

Answer 1

They go up.

Question 2

What should you do to the twim wheel and tab to push the nose down?

Answer 2

Put them up.

Question 3

What does the use of trim tab do to elevator authority?

Answer 3

Reduces it,

Question 4

What does THS stand for?

Answer 4

Trim able horizontal stabiliser.

Question 5

What does a THS allow for in regards to C of G?

Answer 5

Forward.

Question 6

What happens if you trim the aircraft mose down with a forward C of G?

Answer 6

Hard to rotate.

Question 7

What happens if you trim an aircraft with a nose up trim whilst having an aft C of G?

Answer 7

Rotate early therefore possible stall or tailstrike.

Question 8

The trim position should blank the C of G positon?

Answer 8

Counter.

Question 9

If the C of G is forward, what should the trim position be?

Answer 9

Nose up.

Question 10

If the C of G is aft, what should the trim position be?

Answer 10

Nose down.

Question 11

What will hapen to the pitch of the aircraft if the leading edge of the trim in pitched down?

Answer 11

Pitch up.

Question 12

What should you do to reduce the effects of a nose down jammed trim?

Answer 12

Fly slower and increase flaps.

Question 13

What should you do to reduce the effects of a nose up jammed trim?

Answer 13

Increase thrust.

Question 14

If a trim is jammed pitched nose up, what happens to the pitch of the aircraft?

Answer 14

Pitch down.

Question 15

Which of the following affect the setting of the stabiliser trim for take-off?

1. Flap setting
2. CG position
3. Actual take-off mass
4. Outside air temperature

Answer 15

123

Question 16

Aileron reversal can occur at high speeds when the wing with the down-going aileron twists, reducing that wing’s blank.

Answer 16

CL

Question 17

You are in the cruise, allowing the aircraft to accelerate with the autopilot engaged. The pilot observes the control trim moving continuously, and the aircraft is struggling to maintain level flight. What could be occurring in this situation?

Answer 17

Trim runaway or faulty autopilot.

Question 18

If the elevator becomes jammed, the blank blank will work as a small elevator itself and so its effect will be reversed.

Answer 18

Trim tab.

Question 19

Stick forces, provided by an elevator feel system, depend on blank deflection, blank pressure.

Answer 19

Elevator and dynamic.

Question 20

On a jet transport aircraft flying at (1) _____ speeds, the outboard ailerons are (2) _____ to prevent (3) _____.

Answer 20

High - locked - control reversal

Question 21

In a fully powered flight control system, the pilot supplies the force to…

Answer 21

Move the servo valve.

Question 22

Which of the following aerodynamic balancing device enables big control surface change/movement with relatively small force needed to apply?

Answer 22

Servo tab

Question 23

A jet transport aeroplane exhibits pitch up when thrust is suddenly increased from an equilibrium condition, because the thrust line is below the:

Answer 23

C of G

Question 24

For a given aeroplane mass, a more aft CG position will blank the take-off distance and blank the take-off climb performance.

Answer 24

Decrease and improve.

Question 25

For a given aeroplane mass, a more aft CG position will blank the take-off distance and blank the take-off climb performance.

Answer 25

Decrease and improve.

Question 26

Rotation about the longitudinal axis of an aeroplane can be achieved by aileron deflection and

Answer 26

Rudder

Question 27

What axis is roll?

Answer 27

Longitudinal.

Question 28

Preparing to make a flight in a B737, you notice that the yaw damper is INOP, and after consulting the Minimum Equipment List (MEL), you see that flight without the yaw damper is restricted to not above FL170. Aerodynamic damping blanks with altitude.

Answer 28

Decreases.

Question 29

If the elevator becomes jammed, then the: elevator trim tab will be blank.

Answer 29

Reversed.

Question 30

Which of the following are reasons for trimming an aircraft in pitch? 1. Changes of speed 2. Changes of power 3. Varying CG positions 4. Lateral displacement of CG 5. Changes of configuration

Answer 30

1235

Question 31

Comparing the differences between a horizontal trimmable stabiliser and an elevator trim tab, which of these statements are correct or incorrect? I. A elevator trim tab is more suitable to cope with the large trim changes generated by the high lift devices on most jet transport aeroplanes. II. A trim tab runaway causes less control difficulty.

Answer 31

Incorrect - correct.

Question 32

An elevator trim system is more sensitive to blank.

Answer 32

Flutter

Question 33

If the elevator becomes jammed, then the: Elevator trim tab’s effect will be blank.

Answer 33

Reversed

Question 34

Consider two elevator control systems: 1. is fitted with a trim tab. 2. is fitted with fully powered hydraulic controls and an adjustable horizontal stabiliser. For both cases and starting from a trimmed condition, how will the neutral position of the control column change, after trimming for a speed decrease?

Answer 34

1 moves aft, 2 does not change.

Question 35

In the cruise, the pilot of a large commercial jet aircraft notices the trim wheels turning in one direction whilst the aircraft yoke moves in the opposite direction. What should the pilot do? (1) Disengage the autopilot because the autopilot may be defective. (2) Disengage the electric trim switches, as the autopilot masks the trim runaway and a problem with controlling the aircraft may arise.

Answer 35

Both correct

Question 36

One of the main disadvantages of stabiliser trim system, compared to a conventional trim tab system, is that... it is more complex and blank

Answer 36

Heavy

Question 37

What is the position of the elevator in relation to the trimmable horizontal stabiliser of an aeroplane with fully hydraulically operated flight controls that is in trim?

Answer 37

Zero

Question 38

The forward CG limit is mainly determined by the amount of pitch control available from the blank.

Answer 38

Elevator.

Question 39

A jet transport aeroplane exhibits pitch up when thrust is suddenly increased from an equilibrium condition, because the thrust line is below the:

Answer 39

CofG

Question 40

When an aeroplane wing’s angle of attack is increased, downwash causes the horizontal tailplane to experience... lower/higher AoA

Answer 40

Lower

Question 41

Rolling is the rotation of the aeroplane about the: axis

Answer 41

Longitudinal