Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 páginas |
Dentro del libro
Resultados 1-5 de 37
Página ix
... wing of the 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.
... wing of the 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 , PAGE 247 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 , PAGE 247 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 erect 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 erect 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 ...
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Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Sin vista previa disponible - 2016 |
Términos y frases comunes
action aërial albatross angle animals arms and legs arrangement artificial wave artificial wing ascends backwards ball-and-socket joint bat and bird biped blades body bones Borelli Compare with fig concave convex Crown 8vo depressed described downward dugong elastic ligaments elbow-joint elevating and propelling ellipse elytra extended feet fins fish flexed flexible flexion flight flying foot force gannet glide hind horizontal direction humerus inclined planes increased insect wing joint kite less lever limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate ostrich pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapid remarkable resistance right arm 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 vibrate walking waved track weight wing descends
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