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Excellent video showing that the upper fluid particles and the lower fluid particles do not meet at the trailing edge. This would have been better if the wing had a higher angle of attack. The reason that explains this is as follows. After the upper fluid mass particles are processed by the compression zone on the upper leading edge, to travel first up and then down from and to the upper surface to eventually finish behind the trailing edge, before that, they find ahead of them, a suction zone, and so they are accelerated to a higher velocity towards the trailing edge. After the lower fluid mass particles are processed by the relative suction zone under the lower part of the leading edge, to travel first up and then down to and away from the lower surface, they find ahead of them, a compression zone, and so they are decelerated to a lower velocity relative to the leading edge. Note that in a wind/ water tunnel it is the fluid that moves and the airfoil section stays stationary, and in real flying, it is the fluid that is initially stationary, and the airfoil section moves. So the relative difference in velocity talked about in this video, in reality, with initially stationary fluid particles, the upper particles are displaced by the upper suction zone towards the trailing edge while the lower particles are displaced by the lower compression zone and so they are displaced towards the leading edge. One must no longer talk about the heavy air particles flowing over the surfaces of the wing, as in reality they are merely displaced over the wing and they do not really flow over the wing, it is the wing that moves. This effect must be retained in mind when using a wind tunnel as it is not an exact replica of how air behaves around a real flying wing, Congratulations on the excellent clear presentation of the flow channel.

IO-550 or IO-540? Also what blade?

Sounds great....Hartzel 3 blade or MT?

Hey Great video, Picture qualty was so so. Hope to see you guys on the Sept 15 2009 and 20lbs lighter. I was told being 256 now is going to cause some problems to get back into the sport with an instruction. lol

Very well done video. Go SOSA Go!!! I had fun over my six seasons towing, gliding and socializing...