Chapter 1 - Autopilot principles

Question 1

How many typical secondary control surfaces are there?

Answer 1

29

Question 2

What are hydraulic power control actuators controlled by?

Answer 2

Mechanical linkage with manual, autopilot and fly by wire attitude inputs

Question 3

Manual control of the ailerons is aided by what?

Answer 3

Lateral central control actuators (LCCA) which drive the mechanical systems in the wings

Question 4

On large airliners with three auto flight systems, what are the power sources for the left and right systems?

Answer 4

• Engine driven pump (EDP)
• Alternating current motor pump (ACMP)

Question 5

On large airliners with three auto flight systems, what are the power sources for the centre systems?

Answer 5

• Two alternating current motor pumps (ACMP)
• Air-driven pump (ADP)
• Emergency ram air turbine (RAT)