"Ian" wrote in message
...
On 16 Dec, 15:22, "Bill Daniels" bildan@comcast-dot-net wrote:

The thing was a little messy. To see the smoke streamers clearly you
needed
to be in a dimly lit room which quickly filled with kerosene smoke.
That's
probably why it isn't used much anymore. Still, I'd love to have one.
Maybe a computer program could be just as good.

Everyone should -in my opinion - fly a tufted glider while training.

Ian

Tufts are good and yes, students should see them.

However, tufts show boundary layer behavior not angle of attack and
streamlines. Start with the little smoke tunnel in the classroom and then
show them the tufts in flight.

Bill Daniels