Chapter A01 - Automatic Flight Control Systems Flashcards

1
Q

The Automatic Flight Control System, or AFCS, is a set of integrated systems that:

A
  • Can fly and navigate the aircraft - reducing the pilot’s workload
  • Artificially increase the aircraft’s stability enhancing the aircraft’s controllability
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The primary purposes of the AFCS are to:

A
  • Overcome stability and control deficiency
  • Improve handling
  • Improve ride qualities
  • Carry out difficult manoeuvres
  • Perform a manoeuvre for a length of time (like straight and level)
  • Autoland
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A modern AFCS, is comprised of the following systems:

A
  • Autopilot
  • Autothrust
  • Auto-trim
  • Flight Director
  • Yaw Damper
  • Flight Envelope Protection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

An open loop and closed loop systems are?

A
  • open loop - no feedback.
  • closed loop - feedback, allowing corrective actions and enhanced control.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Inner loops and outer loops provide?

A
  • inner loop - provides control/stability of the aircraft (displacements around the CG)
  • outer loop - provides flight guidance for the aircraft (movement of the CG)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Control loops follow?

A

Input -> Error Detector -> Signal Processor -> Output signal (after passing through control laws) -> Control

Feedback from the controls is fed to the error detector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Inner loop stability function is closed by the ____ at the ____

A

Autopilot

servomotor to controller/comparator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Inner loops follows?

A

inner loop - provides control/stability of the aircraft (displacements around the CG)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Outer loops follows?

A

outer loop - provides flight guidance for the aircraft (movement of the CG)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How does the outer loop feed into the inner loop?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Inner loop to do with?

A

Autopilot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Outer loop to do with?

A

Flight director

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is CWS?

A

Goes through the autopilot before outputting a control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A closed-loop system may enter a state of _____ if the system overcompensates for deviations from the desired state.

This state of self-induced oscillation may be detected by reference to instruments or the visual environment. Self-induced oscillations may affect aircraft controllability and aircraft safety.

Timely manual intervention is a way of mitigating loss of control and may include reverting to a ____ of automation or _____ the system causing the problem.

A
  • self-induced oscillation
  • lower level
  • switching off
How well did you know this?
1
Not at all
2
3
4
5
Perfectly