Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsD. Appleton, 1885 - 264 páginas |
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Página ix
... Author , 242 · · How to apply artificial wings to the air , 245 · As to the nature of the forces required for propelling artificial wings , 246 Necessity for supplying the roots of artificial wings with elastic CONTENTS . ix.
... Author , 242 · · How to apply artificial wings to the air , 245 · As to the nature of the forces required for propelling artificial wings , 246 Necessity for supplying the roots of artificial wings with elastic CONTENTS . ix.
Página x
... roots of artificial wings with elastic structures in imitation of the muscles and elastic ligaments of flying animals , • The artificial wave wing can be driven at any speed - it can make its own currents or utilize existing ones ...
... roots of artificial wings with elastic structures in imitation of the muscles and elastic ligaments of flying animals , • The artificial wave wing can be driven at any speed - it can make its own currents or utilize existing ones ...
Página 52
... root produces an extensive sweep at its tip . It is thus that the wing is enabled to work up and utilize the thin medium of the air as a buoying medium . Another drawback to great speed in man is his crect posi- tion . Part of the power ...
... root produces an extensive sweep at its tip . It is thus that the wing is enabled to work up and utilize the thin medium of the air as a buoying medium . Another drawback to great speed in man is his crect posi- tion . Part of the power ...
Página 104
... root of the pinion , or that end of the lever directed towards the body , is succeeded by an immense sweep of the extremity of the wing , where its elevat- ing and propelling power is greatest . This arrangement in- sures that the large ...
... root of the pinion , or that end of the lever directed towards the body , is succeeded by an immense sweep of the extremity of the wing , where its elevat- ing and propelling power is greatest . This arrangement in- sures that the large ...
Página 107
... root of the reed in the direction ne , the wing flies up as a kite in the direction jf . During the upward movement the wing flies upwards and forwards , and describes a double curve . By elevating the root of the reed in the direction ...
... root of the reed in the direction ne , the wing flies up as a kite in the direction jf . During the upward movement the wing flies upwards and forwards , and describes a double curve . By elevating the root of the reed in the direction ...
Outras edições - Ver tudo
Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1882 |
Animal Locomotion, Or, Walking, Swimming, and Flying: With a Dissertation on ... James Bell Pettigrew Visualização integral - 1874 |
Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1893 |
Palavras e frases frequentes
action aërial albatross angle animals arms and legs arrangement artificial wave artificial wing ascends backwards bat and bird biped blades body bones Borelli Compare with fig concave convex depressed described downward dugong effective stroke elastic ligaments elbow-joint elevating and propelling ellipse elytra extended feet fins fish flexed flexible flexion flight flying foot force gannet glide horizontal direction humerus inclined planes increased insect insect wing joint kite less levers limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse root rotation sail screw sea-bear shoulder-joint side speed spiral swimming tail thick margin tion travelling surfaces trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking waved track weight wing descends