Experimental and numerical study of the flight of geese
Abstract The flight of barnacle geese at airspeeds representing high-speed migrating flight is investigated using experiments and simulations. The experimental part of the work involved the filming of three barnacle geese (Branta Leucopsis) flying at different airspeeds in a wind tunnel. The video f...
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Language: | English |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0001924000010939 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0001924000010939 |
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crcambridgeupr:10.1017/s0001924000010939 2024-06-23T07:51:51+00:00 Experimental and numerical study of the flight of geese Dimitriadis, G. Gardiner, J. D. Tickle, P. G. Codd, J. Nudds, R. L. 2015 http://dx.doi.org/10.1017/s0001924000010939 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0001924000010939 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms The Aeronautical Journal volume 119, issue 1217, page 803-832 ISSN 0001-9240 2059-6464 journal-article 2015 crcambridgeupr https://doi.org/10.1017/s0001924000010939 2024-06-12T04:02:19Z Abstract The flight of barnacle geese at airspeeds representing high-speed migrating flight is investigated using experiments and simulations. The experimental part of the work involved the filming of three barnacle geese (Branta Leucopsis) flying at different airspeeds in a wind tunnel. The video footage was analysed in order to extract the wing kinematics. Additional information, such as wing geometry and camber was obtained from a 3D scan of a dried wing. An unsteady vortex lattice method was used to simulate the aerodynamics of the measured flapping motion. The simulations were used in order to successfully reproduce the measured body motion and thus obtain estimates of the aerodynamic forces acting on the wings. It was found that the mean of the wing pitch angle variation with time has the most significant effect on lift while the difference in the durations of the upstroke and downstroke has the major effect on thrust. The power consumed by the aerodynamic forces was also estimated; it was found that increases in aerodynamic power correspond very closely to climbing motion and vice versa. Root-mean-square values of the power range from 100W to 240W. Finally, it was observed that tandem flying can be very expensive for the trailing bird. Article in Journal/Newspaper Branta leucopsis Cambridge University Press Camber ENVELOPE(-63.300,-63.300,-64.680,-64.680) The Aeronautical Journal 119 1217 803 832 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract The flight of barnacle geese at airspeeds representing high-speed migrating flight is investigated using experiments and simulations. The experimental part of the work involved the filming of three barnacle geese (Branta Leucopsis) flying at different airspeeds in a wind tunnel. The video footage was analysed in order to extract the wing kinematics. Additional information, such as wing geometry and camber was obtained from a 3D scan of a dried wing. An unsteady vortex lattice method was used to simulate the aerodynamics of the measured flapping motion. The simulations were used in order to successfully reproduce the measured body motion and thus obtain estimates of the aerodynamic forces acting on the wings. It was found that the mean of the wing pitch angle variation with time has the most significant effect on lift while the difference in the durations of the upstroke and downstroke has the major effect on thrust. The power consumed by the aerodynamic forces was also estimated; it was found that increases in aerodynamic power correspond very closely to climbing motion and vice versa. Root-mean-square values of the power range from 100W to 240W. Finally, it was observed that tandem flying can be very expensive for the trailing bird. |
format |
Article in Journal/Newspaper |
author |
Dimitriadis, G. Gardiner, J. D. Tickle, P. G. Codd, J. Nudds, R. L. |
spellingShingle |
Dimitriadis, G. Gardiner, J. D. Tickle, P. G. Codd, J. Nudds, R. L. Experimental and numerical study of the flight of geese |
author_facet |
Dimitriadis, G. Gardiner, J. D. Tickle, P. G. Codd, J. Nudds, R. L. |
author_sort |
Dimitriadis, G. |
title |
Experimental and numerical study of the flight of geese |
title_short |
Experimental and numerical study of the flight of geese |
title_full |
Experimental and numerical study of the flight of geese |
title_fullStr |
Experimental and numerical study of the flight of geese |
title_full_unstemmed |
Experimental and numerical study of the flight of geese |
title_sort |
experimental and numerical study of the flight of geese |
publisher |
Cambridge University Press (CUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1017/s0001924000010939 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0001924000010939 |
long_lat |
ENVELOPE(-63.300,-63.300,-64.680,-64.680) |
geographic |
Camber |
geographic_facet |
Camber |
genre |
Branta leucopsis |
genre_facet |
Branta leucopsis |
op_source |
The Aeronautical Journal volume 119, issue 1217, page 803-832 ISSN 0001-9240 2059-6464 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0001924000010939 |
container_title |
The Aeronautical Journal |
container_volume |
119 |
container_issue |
1217 |
container_start_page |
803 |
op_container_end_page |
832 |
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1802642987060035584 |