
Outboard of the weapons hardpoints are the aileron actuators on a Predator/Reaper.
Aircraft axis control:
ailerons- roll, wings up/down to turn
rudder (typically part of the vertical stabilizer)- yaw, turns the nose left/right
elevators (part of horiz stab, this one is the canted ones)- pitch, nose up/down
Most directional control surfaces can have a trim tab to adjust that axis in flight. Pitch control is typical, as changes in power/speed could require trim changes.
Beech Bonanzas have V tails that combine the elevator and rudder

flaps- sections of wings that deploy to lower landing speeds and increasing visibility of the pilot on approach by changing the shape (chord) of the wing; Reapers don't have them. To maintain altitude while slowing a plane you have to raise the nose, deploying the flaps allows for slower speeds while keeping the nose lower, until you hit stall speed and the wing stops producing lift and you fall. (Been there, do that for fun!)
I really need to start flying again.
