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Old 2nd Aug 2011, 01:19
  #1291 (permalink)  
A33Zab
 
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Toga & ths

I did post the image before, THS movement E4 thru E5 related to TOGA C4 thru C5

Now with this text from FCTM:

Flight Mode
In pitch, when an input is made on the sidestick, the flight control computers
interpret this input as a “g” demand/pitch rate. Consequently, elevator deflection
is not directly related to sidestick input. The aircraft responds to a sidestick order
with a pitch rate at low speed and a flight path rate or “g” at high speed. When no
input is made on the sidestick, the computers maintain a 1g flight path. Pitch
changes due to changes in speed, thrust and/or configuration, which in a
conventional aircraft would require the pilot to re-trim the aircraft, are
compensated for by the computers repositioning the THS. The pitch trim wheel
moves as the control law compensates for these changes. Sometimes, changes
of trim due to changes in thrust may be too large for the system to compensate,
and the aircraft may respond to them in pitch in the conventional sense and then
hold the new attitude at which it has stabilised after the trim change.

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