Sökning: WFRF:(de Kat R) > (2005-2009) > How swifts control ...
Fältnamn | Indikatorer | Metadata |
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000 | 03290naa a2200385 4500 | |
001 | oai:lup.lub.lu.se:41714ec8-2136-48c0-b175-c71b150972e4 | |
003 | SwePub | |
008 | 160401s2007 | |||||||||||000 ||eng| | |
024 | 7 | a https://lup.lub.lu.se/record/1685702 URI |
024 | 7 | a https://doi.org/10.1038/nature057332 DOI |
040 | a (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Lentink, D4 aut |
245 | 1 0 | a How swifts control their glide performance with morphing wings |
264 | 1 | b 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 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
700 | 1 | a Muller, U K4 aut |
700 | 1 | a Stamhuis, E J4 aut |
700 | 1 | a de Kat, R4 aut |
700 | 1 | a van Gestel, W4 aut |
700 | 1 | a Veldhuis, L L M4 aut |
700 | 1 | a 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 |
700 | 1 | a 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 |
700 | 1 | a Videler, J J4 aut |
700 | 1 | a van Leeuwen, J L4 aut |
710 | 2 | a Evolutionär ekologib Biologiska institutionen4 org |
773 | 0 | t Natured : Springer Science and Business Media LLCg 446:7139, s. 1082-1085q 446:7139<1082-1085x 0028-0836x 1476-4687 |
856 | 4 | u http://dx.doi.org/10.1038/nature05733y FULLTEXT |
856 | 4 8 | u https://lup.lub.lu.se/record/168570 |
856 | 4 8 | u https://doi.org/10.1038/nature05733 |
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