Have always been interested in aviation and I pay very close attention to small details, like the positioning of the primary flight controls as those interests me the most.
I've recently noticed the ailerons behave differently on the A321XLR compared to the A321neo upon touchdown.
On the XLR, the aileron essentially deflects upwards and almost acts as an extra ground spoiler along with the main spoilers. I understand this is what's called the "aileron anti droop" function which is found on the A320neo, A350/some Boeing aircraft as well.
But looking at the A321neo, the aileron remains at neutral after touch down and does not deflect upwards.
I've watched a lot of landing videos and it does seem to support this hypothesis.
The above screenshots of 2 landing videos, shows the XLR aileron deflecting upwards while the A321N's ailerons remain neutral.
Any A321 neo/XLR pilots here can explain why does the A321XLR have this function while the regular A321N doesn't?
I've searched online but can't seem to find anything.
Would be great to learn the underlying reasons of why the XLR's flight controls are designed as such!