Understanding the twist in your wing By David Andersen As seen in the March 2012 issue of Model Aviation.Washout is a design characteristic built into the wing, where the angle of attack is reduced span-wise from root to tip, typically 1° to 2°. The reduction creates a situation where the root of the wing stalls before the tip, softening the stall and allowing the ailerons to be functional deep in the stall. Washout is a twist in a wing that causes the wingtip to meet the airfl ow at a lower angle than the root in normal upright fl ight. Some airplanes don’t need it…