| Abstract: | Measurements of the body frontal area of some large living waterfowl (Anatidae) and raptors (Falconiformes) were found to vary with the two-thirds power of the body mass, with no distinction between the two groups. Wind tunnel measurements on frozen bodies gave drag coefficients ranging from 0.25 to 0.39, in the Reynolds number range 145 000 to 462 000. Combining these observations with those of Prior (1984), which extended to lower Reynolds numbers, a practical rule is proposed for choosing a value of the body drag coefficient for use in performance estimates. |
| Genre: | Article |
| ProdID: | 5220765 |
| Citation Author: | Pennycuick, C.J.; Obrecht, H.H., III; Fuller, M.R. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 264 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Experimental Biology |
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| Citation Number Of Pages: | 12 |
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| Citation Phsyical Description: | 253-264 |
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| Citation Public Comments: | 3652_Pennycuick.pdf |
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| Citation Search Results Text: | Empirical estimates of body drag of large waterfowl and raptors; 1988; Article; Journal; Journal of Experimental Biology; Pennycuick, C.J.; Obrecht, H.H., III; Fuller, M.R. |
| Citation Start Page: | 253 |
| Citation Volume: | 135 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Empirical estimates of body drag of large waterfowl and raptors; 1988; Article; Journal; Journal of Experimental Biology; Pennycuick, C.J.; Obrecht, H.H., III; Fuller, M.R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://jeb.biologists.org/cgi/reprint/135/1/253 |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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