On Saturday, September 1, 2012 9:44:12 AM UTC-5, kirk.stant wrote:

As far as only one wing being stalled in a spin - if one wing is still flying (below stall AOA), the other is just barely at stall AOA (due to yaw, gust, whatever) and the flying wing will roll you over until it too stalls (now you are spinning, via an over the top entry, or once the nose goes down you will accelerate until the stalled wing is under stalling AOA. If you fully stall the glider in a yaw, both wings are above stall AOA, but one will still produce more lift than the other, that is what causes the autorotation/spin.

I spoke too soon without refreshing myself on spin dynamics:

Depending on spin mode, the inner wing is always stalled, but the outer wing may or may not be stalled.

Good explanation of spins at: http://www.av8n.com/how/htm/spins.html

Kirk
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