Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 247
ings up till 1865.He was well acquainted with the properties of the wedge, asapplied to flight, and he was likewise cognisant of the flexibleand elastic properties of the wing. To him is to be tracedthe purely mechanical theory of the wings action. He figureda bird with artificial wings, each wing… … FIG. 113.—Borellis Artificial Bird. The wings (b cf, oca), are represented as striking verticallydownwards (g h). They remarkably accord with those de-scribed by Straus-Durckheim, Girard, and quite recently byProfessor Marey.3 Borelli is of opinion that flight results from the applicationof an…
Animal locomotion · Aeronautics
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