Originally Posted by
DAHenriques
Rotation is an extremely complex moment of transition.
It’s actually a very simple process. At least try to understand it or use basic rules to help you out. Crosswind = stick into the wind & opposite rudder is a good starting point to avoid you’re going to be chasing 😉
The basic explanation has been given and is part of an ATPL training. Relative wind changes, and aerodynamic characteristics change as the airflow hits along a different line. If the airflow would cut the wing into profile sections, you would see these cross-sections change and create different lift.
On modern jets you can actually ’measure’ exactly how much aileron is needed. In a crosswind takeoff you’ll find yourself giving rudder inputs (weathervane effect) in the roll. Gently bring in the aileron until the ’pumping’ stops and only a gentle rudder input remains. Keep this control wheel deflection steady during rotation and your wings will not roll an inch. Not going into spoiler deflection discussions... I don’t care. I don’t want to be the guy explaining wingtip or engine pod strikes because I was scared of spoiler drag.