Sökning: id:"swepub:oai:lup.lub.lu.se:c163a8af-3bb0-4250-8fe7-8d19fb93b033" >
Downstroke and upst...
Downstroke and upstroke conflict during banked turns in butterflies
-
- Henningsson, P. (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Flyglabbet,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,Animal Flight Lab,Lund University Research Groups
-
- Johansson, L. C. (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Flyglabbet,Forskargrupper vid Lunds universitet,Enheten för undervisningsstöd,Universitetsförvaltningen,Universitetets ledning och förvaltning,Evolutionary ecology,Department of Biology,Faculty of Science,Animal Flight Lab,Lund University Research Groups,Unit for Educational Services,Central Administration,University Management and Central Administration
-
(creator_code:org_t)
- 2021-12
- 2021
- Engelska 1 s.
-
Ingår i: Journal of the Royal Society, Interface. - : The Royal Society. - 1742-5662. ; 18:185, s. 20210779-20210779
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://royalsociety...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- For all flyers, aeroplanes or animals, making banked turns involve a rolling motion which, due to higher induced drag on the outer than the inner wing, results in a yawing torque opposite to the turn. This adverse yaw torque can be counteracted using a tail, but how animals that lack tail, e.g. all insects, handle this problem is not fully understood. Here, we quantify the performance of turning take-off flights in butterflies and find that they use force vectoring during banked turns without fully compensating for adverse yaw. This lowers their turning performance, increasing turn radius, since thrust becomes misaligned with the flight path. The separation of function between downstroke (lift production) and upstroke (thrust production) in our butterflies, in combination with a more pronounced adverse yaw during the upstroke increases the misalignment of the thrust. This may be a cost the butterflies pay for the efficient thrust-generating upstroke clap, but also other insects fail to rectify adverse yaw during escape manoeuvres, suggesting a general feature in functionally two-winged insect flight. When lacking tail and left with costly approaches to counteract adverse yaw, costs of flying with adverse yaw may be outweighed by the benefits of maintaining thrust and flight speed.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- aerodynamics
- butterflies
- flight
- manoeuvring
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas