The aerodynamics of flying wings (part 2)

In this video I look at the issues of roll and yaw stability, why flying wings are often swept back, how sweep produces a dihedral effect and unwanted yaw-roll coupling, as well as ways to reduce the unwanted effects of sweep.
I hope I've made this simple enough to understand and it encourages you to experiment with designing or modifying your own RC flying wing planes.
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MiG 17 picture by Robert Lawton
A350 picture by Kiefer
Both used under Creative Commons license: