Copyright D.P. Browne 2011

 

 

 

 

Home.Cockpit.Aircraft Systems.Worked Example.Program Controls.Before Flight.

Yaw Control

 

Next

 

 

 

Previous

 

 

 

Pitch Control
Modes

Yaw control is provided by one rudder surface (deflection ± 31.6°). The rudder is operated by three independent hydraulic servo-controls, with a common mechanical input. This mechanical input receives three commands :

 

 

 

 

 

 

Ruder pedal

 

The mechanical input is limited by the Travel Limitation Unit (TLU) as a function of airspeed in order to avoid excessive load transmission to the aircraft. This function is achieved by the SEC computers.

 

Yaw damper commands are computed by the primary or secondary computers

 

 

The A/P commands are processed by the PRIM computers and are transmitted to the rudder via the yaw damper and the rudder trim actuator.

 

 

 

Ruder Trim actuator

 

Yaw damper