title: Note on the glide of a bird with wings bent downwards.
abstract: This note considers the influence of the bending down of the wings of a bird on the performance of its glide. The induced drag of bent wings is compared with the induced drag of a corresponding straight wing. Numerical results are given.
authors.affiliation: Department of Mathematics, Universiteit van Groningen, Groningen, The Netherlands. bhp.sparenberg@12move.nl
authors.forename: J A
authors.initials: JA
authors.lastname: Sparenberg
mesh_terms: D000818:Animals; D046091:Charadriiformes / Q000502:physiology*; D004734:Energy Metabolism; D005426:Flight, Animal / Q000502:physiology*; D008433:Mathematics; D008954:Models, Biological; D014921:Wings, Animal / Q000502:physiology*