"Chris Reed" wrote in message
...
On downwind leg, and I won't do the full calculation. Something like 90
degrees= nil wind, 60 = half wind, 30=full headwind. In the example this
gives me +0, +5 or +10. Close enough.

If your glider floats well, like my Open Cirrus, then the extra few knots
is significant. If I land 10kt over the correct speed for the day, I'll
float more than twice as far after the roundout.

Hi Chris,
You wrote that something like 90 degrees= nil wind. So if someone
do a slip in the wind direction in order to sayt alligned with the runway
during the final leg, the pitch angle of the sailplane is somewhere greater
than supposed! In this case, with 90 degree wind, the sailplaine have
to travel a longer way through the air mass.

Though, the sailplane fly more faster than supposed, and the pilot
doesn't use much airbrake! Is that what effectively happen in that
wind condition?

Jmarc