Aircraft flight control systems

A computer attitude (English Flight control system, FLCS ) is a calculator for quick control or correction of movements of an airplane.

The attitude is determined as the angle of the three axes of the aircraft to the respective reference angle:

A computer attitude works as a controller which controls one of the two first angle at which he holds the angle on the value that the pilot has once given. For two axes two computers or two channels of a computer are needed.

The FLC is explicitly not an autopilot, because he can not react to disturbances. Example: For a given engine power turns at a constant speed a very specific angle of attack a. Will now be given of the FLC to keep this angle and the pilot is no longer engaged. At first, everything remains as the pilot intended. However, the engine fuel consumption, that is, the aircraft will be easier and faster. The aerodynamics of a conventional aircraft now leads that the aircraft will take the nose up. That leaves the FLC but not to and controlled by the elevator against. The attitude will be preserved, but due to the lower output and thereby lower resistance, the speed continues to rise and the airplane will back up its nose. The FLC controls again against because only the attitude is controlled, the aircraft can reach a critical velocity or even destruction of the structure.