Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.)
Instantaneous force production in wing-propelled diving Atlantic puffins (Fratercula arctica) was investigated using four birds for which instantaneous estimates of velocity and acceleration of the body were made. The quasi-steady resultant force acting on the body in the sagittal plane was calculat...
Published in: | Canadian Journal of Zoology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2003
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/z03-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-058 |
id |
crcansciencepubl:10.1139/z03-058 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/z03-058 2023-12-17T10:30:20+01:00 Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) Johansson, L Christoffer 2003 http://dx.doi.org/10.1139/z03-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-058 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 81, issue 5, page 816-822 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2003 crcansciencepubl https://doi.org/10.1139/z03-058 2023-11-19T13:38:32Z Instantaneous force production in wing-propelled diving Atlantic puffins (Fratercula arctica) was investigated using four birds for which instantaneous estimates of velocity and acceleration of the body were made. The quasi-steady resultant force acting on the body in the sagittal plane was calculated using acceleration reaction coefficients, buoyancy estimates, and drag coefficients taken from the literature and calculated, using two different methods, from a video sequence of a puffin gliding (C Dw = 0.021 and 0.026, respectively). The forces calculated from the motion of the body coincide well with the wing-beat cycle, with a forward- and upward-directed force produced by the wings during the downstroke and a forward- and downward-directed force produced during the upstroke. The result suggests that a thrust force may also be produced during at least the lower-stroke reversal. This means either that there may exist some undescribed propulsive mechanism, possibly caused by an interaction of the wings beneath the body, or that the body drag coefficient may be overestimated. However, the body drag coefficient calculated in the study is close to the coefficients measured on dead birds. Furthermore, I conclude that the high reduced frequency (average 0.82) suggests a non-steady-state hydrodynamic mechanism of wing-propelled diving in puffins. Article in Journal/Newspaper fratercula Fratercula arctica Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 81 5 816 822 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Johansson, L Christoffer Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Instantaneous force production in wing-propelled diving Atlantic puffins (Fratercula arctica) was investigated using four birds for which instantaneous estimates of velocity and acceleration of the body were made. The quasi-steady resultant force acting on the body in the sagittal plane was calculated using acceleration reaction coefficients, buoyancy estimates, and drag coefficients taken from the literature and calculated, using two different methods, from a video sequence of a puffin gliding (C Dw = 0.021 and 0.026, respectively). The forces calculated from the motion of the body coincide well with the wing-beat cycle, with a forward- and upward-directed force produced by the wings during the downstroke and a forward- and downward-directed force produced during the upstroke. The result suggests that a thrust force may also be produced during at least the lower-stroke reversal. This means either that there may exist some undescribed propulsive mechanism, possibly caused by an interaction of the wings beneath the body, or that the body drag coefficient may be overestimated. However, the body drag coefficient calculated in the study is close to the coefficients measured on dead birds. Furthermore, I conclude that the high reduced frequency (average 0.82) suggests a non-steady-state hydrodynamic mechanism of wing-propelled diving in puffins. |
format |
Article in Journal/Newspaper |
author |
Johansson, L Christoffer |
author_facet |
Johansson, L Christoffer |
author_sort |
Johansson, L Christoffer |
title |
Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
title_short |
Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
title_full |
Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
title_fullStr |
Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
title_full_unstemmed |
Indirect estimates of wing-propulsion forces in horizontally diving Atlantic puffins ( Fratercula arctica L.) |
title_sort |
indirect estimates of wing-propulsion forces in horizontally diving atlantic puffins ( fratercula arctica l.) |
publisher |
Canadian Science Publishing |
publishDate |
2003 |
url |
http://dx.doi.org/10.1139/z03-058 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-058 |
genre |
fratercula Fratercula arctica |
genre_facet |
fratercula Fratercula arctica |
op_source |
Canadian Journal of Zoology volume 81, issue 5, page 816-822 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z03-058 |
container_title |
Canadian Journal of Zoology |
container_volume |
81 |
container_issue |
5 |
container_start_page |
816 |
op_container_end_page |
822 |
_version_ |
1785583272442462208 |