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Empirical estimates of body drag of large waterfowl and raptors

Journal of Experimental Biology

3652_Pennycuick.pdf
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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 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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Empirical estimates of body drag of large waterfowl and raptors
Series title:
Journal of Experimental Biology
Volume
135
Year Published:
1988
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
253-264
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Experimental Biology
First page:
253
Last page:
264
Number of Pages:
12