ORIGINAL: Holton50
3dd- ive heard that dose help dropping both ailerons.. Essentially making flaperions. just to make sure I’m catching what your referring to is lower them not raise, because raising them in my mind would kill lift making an air brake.
Not nessesarily! A lot of sailplanes, both models and full scale, reflex the ailerons up a few degrees when flying fast in order to cover ground in a headwind or while blasting through an area of sink. Trimming the plane with aileron reflex or droop instead of elevator allows the fusilage to remain aligned with the airstream over a wide range of trim speeds.