RaveRaidUK
The flattest glide (ie minimum height loss per horizontal distance travelled) corresponds to the bottom of the drag curve (max L/D).
Fly any slower or faster and you will be draggier with a resulting steeper descent.
Are You 100% sure thats right, Rave ?
Bottom of the drag curve, lovest foot per minute descent.
On the high speed side of the drag curve, where a straight line from origo(at zero winds) meets the drag curve, you would find the speed for best glide i guess ?