Chapter A02 - Autopilot Flashcards
Autopilot is classified according to the?
number of axes it controls
Autopilots can be classified as?
- Single Axis - roll only (wing leveller)
- Two Axis - pitch and roll
- Three Axis:
- pitch and roll - primary control
- yaw – stability
How do you know if you have selected something on the autopilot?
Its displayed on the FMA
Servomechanisms are defined as _____ control systems in which a ____ power input controls a much ____ power output in a strictly proportional manner.
- closed-loop
- small
- larger
Servo-actuators may be connected to the normal flight control system in Series
or in Parallel.
Series - _______
Parallel - _______
- Series does not move the pilot’s control column or foot pedals when the flying
surfaces are moved. - Parallel moves the pilot’s controls when the surfaces are moved.
Automatic synchronisation is to do with?
The smooth engagement of the autopilot
Automatic Trim System :
- Provides a smooth take over when ____, returning the aircraft to the pilot in a trimmed condition…
- Prevents _____
- Reduces _____
- A/P won’t ____ if auto-trim system not working properly
- EASA – auto-trim uses a hydraulic _____ on horizontal stabilizer
- disengaging A/P
- “Control Snatch”
- trim drag
- engage
- screw jack
The A/P will only disengage if you purposefully disengage it by pressing:
- Autopilot disengage button on yoke
- The illuminated MCP autopilot button
- The MCP autopilot disengage bar
- Activate either pilot’s trim switch
- Pushing TOGA button
Autopilot disengagement is accompanied by ?
Aural and visual warnings
In an autopilot system, the terms “engaged” and “armed” refer to different states of operation.
Engaged Mode: When the autopilot is in the engaged mode, it means that the autopilot system is actively controlling the aircraft’s flight controls to maintain a specific flight mode or follow a predetermined flight path. In this mode, the autopilot takes over the control of the aircraft from the pilot. The engaged mode is typically indicated by a specific mode annunciator or display on the autopilot control panel.
Armed Mode: When the autopilot is in the armed mode, it means that the autopilot system is ready to engage a specific mode or action but has not yet taken control of the aircraft’s flight controls. In this mode, the autopilot is actively monitoring the aircraft’s parameters, such as altitude, heading, or navigation inputs, in preparation for engagement. Once the specified conditions are met, the autopilot will transition from the armed mode to the engaged mode.
Functions related to aeroplane guidance are?
- IAS or Mach number holding
- Altitude holding
- Following a glideslope
- VOR axis holding
Stability of an autopilot system is related to?
Movements around the C of G
The components of an autopilot system are?
- Actuators
- Mode control panel
- Mode annunciator panel
Stabilization modes of the autopilot system
(Spiderman vs Batman: Peter Wins)
Stabilization:
1) Vertical Speed
2) Bank Angle hold
3) Pitch angle hold
4) Wings level
Lateral guidance modes of the autopilot system
(Lex Luthor Has The FLying Warsuit:)
Lateral Guidance:
1) Localiser Intercept and hold/track
2) Heading hold
3) Track Hold
4) FMS Lateral Navigation
5) Wing Level hold
Autopilot system
