On 10 nov, 08:31, Bob wrote:
I wonder how this would go in a Nimbus 4D? Any opinions? ;

I did that at Saint-Auban (France) in 1995 with one of their
instructors in the back of the Nimbus. Followed the rules: opened the
airbrakes and went under the slipstream. Not really difficult, but the
towplane must descend very slowly! In our case, whenever the descent
rate was higher than something like - 1,5 m/s (some 300 ft/min, if I
remember correctly), the glider started to overtake. I then had to
slip the beast to keep the cable under tension. That wasn't really
funny...

By the way, that was my first flight on type, and the towpilot was a
pupil with instructor.

This exercise is done regularily in Europe. In my opinion, the big
difficulty is the correct training of the towpilot. He has to know the
characteristics of the glider he is towing, and not forget to come in
higher than usual to allow for the gider being lower and behind. The
glider pilot should just have to follow...