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Flight Control System
Uses hydraulic actuators (PCUs) to control flight control surfaces. A PBIT is used to check FCM, P-ACE, and SF-ACE functionality, and has a validity of 20hrs. A hydraulic PBIT checks functionality of PCUs and takes 1 minute to complete.
Modes
| Normal | FCM provides software based airspeed gain schedules and control limits to the P-ACE |
| airspeed augmentation | |
| angle of attack | |
| elevator thrust compensation | |
| rudder flight authority | |
| yaw damper / turn coordination | |
| Direct | FCM is removed from the control loop (eg. during loss of airspeed data) |
| control limits default to hardware values set in the P-ACE | |
Schematic
See also
Secondary Flight Control System