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
yProfessor Marey.^ Borelli is of opinion that flight results from the applicationof an inclined plane, which beats the air, and which has awedge action. He, in fact, endeavours to prove that a birdwedges itself forward upon the air by the perpendicular vibra- ^ Borelli, De Motii Animalium. Sm. 4to,… … Fig. 113.—Borellis Artificial Bird. AERONAUTICS. 221 tion of its wings, the wings during their action forming awedge, the base of which (c h e) is directed towards the headof the bird; the apex (af) being directed towards the tail.This idea is worked out in propositions 195 and 196 of thefirst part…
Animal locomotion · Aeronautics
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