Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 181
o elapse between them, beget a corresponding series ofup impulses, in accordance with the law of action and re-action; the wing and the air under these circumstances beingalternately active and passive. I say if a certain intervalwere allowed to elapse between every two down strokes, but 158 ANIMAL… … Fig. S3. Figs. 82 and 83 show that when the wings are elevated (e, f, g of fig. 82) thebody falls (s of fig. 82) ; and that when the wings are depressed (It, l,j offig. 83) the body is elevated (r of fig. S3). Fig. 82 shows that the wings areelevated as short levers (c) until towards the…
Animal locomotion · Physiology · Aeronautics
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