A project for Chris Rud

[frank williams]

Chris,
OK Chris, your task, should you decide to accept it, is to use your neat camera arrangement and turn it 90 degrees and video the top of the wing.  Before you fly you tape down some 1" to 1 1/2" strips of string (in a contrasting color to your wing color)  in several rows across the wing and a set on the flaps too.  You don't need to do both wings, just in view of the camera.  Turn the camera on, fly, and do some maneuevers. Any flow separations will result in the strings curling up.  Your might also do this with and without some vortex generators to see what effect they really have.  It will be interesting to see the flap deflections also.   You might also turn the camera around a bit more and do the same thing for the stab and elevator.
Frank

[wwwarbird]

 That would be cool.

[Chris_Rud]

Chris,
OK Chris, your task, should you decide to accept it, is to use your neat camera arrangement and turn it 90 degrees and video the top of the wing.  Before you fly you tape down some 1" to 1 1/2" strips of string (in a contrasting color to your wing color)  in several rows across the wing and a set on the flaps too.  You don't need to do both wings, just in view of the camera.  Turn the camera on, fly, and do some maneuevers. Any flow separations will result in the strings curling up.  Your might also do this with and without some vortex generators to see what effect they really have.  It will be interesting to see the flap deflections also.   You might also turn the camera around a bit more and do the same thing for the stab and elevator.
Frank

I will do it. Does anybody want to donate the vortex generators?

[frank williams]

Great, Chris
I'll send you some vg's to try and some suggestions on tuft locations. 
pm me your mail address.
I've wanted to do this for years.  The nearest we came was to try to photograph from outside the circle.
You're gonna make a great flight test engineer.
Frank