Originally Posted by
A33Zab
For the guys wondering about the absence of (force) feedback to the stick.
Which F/B signal should be applied, A/C RESPONSE or surface deflection signal. (FEEDBACK SIGNALS)?
Nicely 'loaded' question ,
A33Zab....
Don't ask me, I'm an ancient "AFCS", not "AFS" (artificial feel) engineer.....
You have me wondering......but then I've never flown anything 'big' or 'fast' so I doubt I can contribute anything.
In something totally basic as a Piper Cub, your 'stick' cues are stick deflection = surface deflection (minus trim), and stick force = surface hinge moment. I very much doubt that would be what you want for an A330 sidestick?
Whoever did the artificial feel on Concorde obviously got it right.... there are enough comments from pilots on how well she handled. And that was a supersonic airliner, not a subsonic Coke can.
Maybe... not enough was 'fed back' from the early sidestick trials on 'SB, or maybe the issue of 'force feedback' was not yet addressed during those trials. I suppose I'll have to find again the few items of doc on the subject.