The phenomenon has been known about for a quite a while. I think people first speculated that albatross did it (later confirmed), as far back as the early 1900's or late 1800's.
At 01:30 PM 11/25/01 -0600, Al Scidmore wrote: >A comment on DS. It seems to me that years and years ago I found a >discussion of dynamic soaring in one of Reichmann's writings. Only in this >case the discussion was about full scale soaring pilots who had used a wind >gradient at altitude to fly for prolonged periods of time. What is needed >is a wind speed gradient and a way to explore that gradient. The first does >not need to be slope generated, and the second is a flying technique. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]