Empirical estimates of body drag of large waterfowl and raptors
Journal of Experimental Biology
By: C.J. Pennycuick, H.H. Obrecht III, and M.R. Fuller
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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 462000. 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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Empirical estimates of body drag of large waterfowl and raptors |
| Series title | Journal of Experimental Biology |
| DOI | 10.1242/jeb.135.1.253 |
| Volume | 135 |
| Year Published | 1988 |
| Language | English |
| Publisher | Company of Biologists |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 12 p. |
| First page | 253 |
| Last page | 264 |
| Google Analytic Metrics | Metrics page |