Foam Walkalong Glider

Step 6 Thermoform Dihedral and Washout Angle

Step 6 involves thermoforming a twist and upward bend (also called [http://en.wikipedia.org/wiki/Dihedral_(aircraft) wing dihedral]) to each wing. The wing root will have a higher angle of attack than the with tip which prevents tip stalls when applying control inputs about the [http://en.wikipedia.org/wiki/Roll_(flight) roll axis] (also called the [http://en.wikipedia.org/wiki/Washout_(aviation) wing washout angle]). The dihedral in an airframe design makes the aircraft more stable in the roll axis.

It is important to do this step before bending the airfoil.