Albatrosses fly for many hundreds of miles a day without a single flap of the wings, They exploit the wind differential of surface to 100m and gain energy exceeding the wing drag. This is called dynamic gliding, a manoeuvre better explained like two opposing half barrel rolls in succession: glide downwind gain speed and sink down to the surface, turn into the wind and creep up climbing until all speed bleeds away, turn downwind and accelerate again. In the Med they perform this for a few turns and then stop. In the Southern hemisphere the bigger cousins do this all day continuously...
Posted on: Sun, 17 Aug 2014 11:09:23 +0000
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