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Sökning: WFRF:(de Kat R) > (2005-2009) > How swifts control ...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003290naa a2200385 4500
001oai:lup.lub.lu.se:41714ec8-2136-48c0-b175-c71b150972e4
003SwePub
008160401s2007 | |||||||||||000 ||eng|
024a https://lup.lub.lu.se/record/1685702 URI
024a https://doi.org/10.1038/nature057332 DOI
040 a (SwePub)lu
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
100a Lentink, D4 aut
2451 0a How swifts control their glide performance with morphing wings
264 1b Springer Science and Business Media LLC,c 2007
520 a Gliding birds continually change the shape and size of their wings(1-6), presumably to exploit the profound effect of wing morphology on aerodynamic performance(7-9). That birds should adjust wing sweep to suit glide speed has been predicted qualitatively by analytical glide models(2,10), which extrapolated the wing's performance envelope from aerodynamic theory. Here we describe the aerodynamic and structural performance of actual swift wings, as measured in a wind tunnel, and on this basis build a semiempirical glide model. By measuring inside and outside swifts' behavioural envelope, we show that choosing the most suitable sweep can halve sink speed or triple turning rate. Extended wings are superior for slow glides and turns; swept wings are superior for fast glides and turns. This superiority is due to better aerodynamic performance - with the exception of fast turns. Swept wings are less effective at generating lift while turning at high speeds, but can bear the extreme loads. Finally, our glide model predicts that cost-effective gliding occurs at speeds of 8 - 10 m s(-1), whereas agility-related figures of merit peak at 15 - 25 m s(-1). In fact, swifts spend the night ('roost') in flight at 8 - 10 m s(-1) ( ref. 11), thus our model can explain this choice for a resting behaviour(11,12). Morphing not only adjusts birds' wing performance to the task at hand, but could also control the flight of future aircraft(7).
650 7a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng
700a Muller, U K4 aut
700a Stamhuis, E J4 aut
700a de Kat, R4 aut
700a van Gestel, W4 aut
700a Veldhuis, L L M4 aut
700a Henningsson, Peru Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)teor-pho
700a Hedenström, Andersu Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)ekol-ahe
700a Videler, J J4 aut
700a van Leeuwen, J L4 aut
710a Evolutionär ekologib Biologiska institutionen4 org
773t Natured : Springer Science and Business Media LLCg 446:7139, s. 1082-1085q 446:7139<1082-1085x 0028-0836x 1476-4687
856u http://dx.doi.org/10.1038/nature05733y FULLTEXT
8564 8u https://lup.lub.lu.se/record/168570
8564 8u https://doi.org/10.1038/nature05733

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