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AEROSPACE
Albatross 'dynamic soaring' achieved by repeated curve-altitude oscillation
by Staff Writers
Washington DC (SPX) Sep 10, 2012


File image.

Albatrosses leverage the energy of the wind to fly with essentially no mechanical cost to themselves, very rarely flapping their wings, and new work published in the open access journal PLOS ONE offers insight into how exactly they accomplish this feat.

The researchers, led by Gottfried Sachs of the Technische Universitaet Muenchen and Francesco Bonadonna of the French National Centre for Scientific Research (CNRS), used advanced GPS tracking to determine that the energy gain during the albatross's "dynamic soaring" comes from a repeated oscillation consisting of a combined curve-altitude flight maneuver, with optimal adjustment for the wind.

The results may provide inspiration for robotic aircraft that utilize the flight technique of albatrosses for engineless propulsion, the authors write.

Sachs G, Traugott J, Nesterova AP, Dell'Omo G, Kummeth F, et al. (2012) Flying at No Mechanical Energy Cost: Disclosing the Secret of Wandering Albatrosses. PLOS ONE 7(9): e41449. doi:10.1371/journal.pone.0041449

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