这个是FF320开发者的答复 https://forums.x-plane.org/index.php?/forums/topic/148580-acceleration-on-ground/&do=findComment&comment=1415090
It's slightly overpowered, we are working on this... but real takeoffs can be much longer because of higer VR and V2 speed. Default speeds in FMGS are the lowest possible, but airbus software computes higer speed if runway permits.