Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 242
Stringfellow stated that his machine occasionally left the wire, andwas sustained by its superimposed planes alone. AEROKAUTICS. 215 balloon and all forms of fixed aeroplanes. In nature, smallwings driven at a high speed produce the same result as largewings driven at a slow speed (compare fig. 58,… … Fig. 111.—Cayleys Flying Apparatus. The Aerial Screw.—Our countryman. Sir George Cayley,gave the first practical illustration of the efiicacy of the screwas applied to the air in 1796. In that year he constructed asmall machine, consisting of two screws made of quill feathers(fig. 111). Sir George…
Animal locomotion · Aeronautics
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