Originally Posted by grity
how works the mechanik of the rod-spring at the kink of 6.5 mm ??? (1/3 pull)
that is +/- the pitch aerea the PF hold the stick during the climb....
Grity, the way this is commonly done is two springs, one for the initial slope and a second that has a certain amount of freeplay to generate the steeper slope.
One of the guys with maintenance experience will have to tell us the specifics of the A330 feel system, but if you will note, there are two spring cartridges in the pitch channel. This may be a redundant design with two identical sets of spring cartridges, or a non-redundant design with one spring cartridge doing the first slope, and the second cartridge (with built in freeplay) doing the second slope. Each cartridge would contain at least two springs (nose up and nose down).