"Eric Greenwell" wrote in message
...


Have you tried these in a shallow turning stall, when it is the wing tip
that stalls, not the root?


Yep, and the indication is still useful. No doubt the AOA measured near the
centerline is lower than the actual AOA of the inside wingtip. (Your point,
Eric.)

But, the AOA indication you do get is significantly greater than minimum
sink so that you would take it as a stall warning, or at least an indication
that lowering the nose would result in better performance.

YMMV, but my experience with them has been that the 10cm long strings are
25mm or so higher at stall than at min sink while the difference between
best L/D and min sink is only 5 - 10mm. The strings angle upward and wiggle
a lot near stall.

All I can say is try it. If it doesn't do anything for you, rip 'em off.
It's a pretty cheap experiment.

Bill Daniels