On Apr 7, 7:50 pm, "Tuno" wrote:
The SeeYou statistics for this flight are mind boggling. The final
phase (out of about 18) was a "straight" glide over 5 hours long
covering 582 miles at 113mph with an L/D of 1005!

You could probably have selected a start point for the statistics at
which the altitude was lower than the finish point. That would have
proved that the glider was actually capable of creating energy not
just dissipating it very slowly.

Just an oblique way of saying that flying a glider in rising air does
not change its lift to drag ratio.

Andy