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" ... sail does not coincide with the centre of its surface, but is considerably in front of it. As the obliquity of the current decreases these centres approach and coincide when the current becomes perpendicular to the sail. Hence any heel of the machine... "
A Journal of Natural Philosophy, Chemistry and the Arts - Strana 86
autor/autoři: William Nicholson - 1810
Úplné zobrazení - Podrobnosti o knize

Retrospect of Philosophical, Mechanical, Chemical, and ..., Svazek 6

1811 - 558 str.
...decreases, these centres approach, and coincide when the current becomes perpendicular to the sail. Hence any heel of the machine backward or forward,...in length to the distance the centre has removed." From a variety of experiments which the author has made on this subject, he conceives that a rudder,...
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Retrospect of philosophical, mechanical, chemical and agricultural discoveries

1812 - 696 str.
...coincide when the current becomes perpendicular to the sail. Hence any heel of the machine hackward or forward, removes the centre of support behind or...position by a power, equal to the whole weight of the machme, acting upon a lever equal in length to the distance the centre has removed." From a variety...
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Annual Report of the Aeronautical Society of Great Britain

Aeronautical Society of Great Britain - 1866 - 168 str.
...the current becomes perpendicular to the plane, hence any heel of the machine backwards or forwards removes the centre of support behind or before the point of suspension.' " From this discovery, it seems remarkable that Sir George Cayley, finding that at high speeds with...
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Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ...

James Bell Pettigrew - 1873 - 376 str.
...the current becomes perpendicular to the plane ; hence any heel of the machine backwards or forwards removes the centre of support behind or before the point of suspension." — Nicholson's Journal, vol. xxv. p. 83. When the speed attained by the bird is greatly accelerated,...
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English Mechanic and World of Science: With which are ..., Svazek 32

1881 - 648 str.
...the current becomes perpendicular to the plane, hence any heel of the machine backwards or forwards removes the centre of support behind or before the point of suspension.' "From this discovery, it seems remarkable that Sir George Cayley, finding that at high speeds with...
Úplné zobrazení - Podrobnosti o knize

Annual Report of the Aeronautical Society of Great Britain

Aeronautical Society of Great Britain - 1871 - 586 str.
...current decreases these centres approach and coincide when the current becomes perpendicular to the sail. Hence any heel of the machine backward or forward...in length to the distance the centre has removed. To render the machine perfectly steady, and likewise to enable it to ascend and descend in its path,...
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The Aeronautical Annual, Svazek 1

James Means - 1894 - 224 str.
...the current becomes perpendicular to the plane, hence any heel of the machine backwards or forwards removes the centre of support behind or before the point of suspension.' " From this discovery, it seems remarkable that Sir George Cayley, finding that at high speeds with...
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The Problem of Flight: A Text-book of Aerial Engineering

Herbert Chatley - 1907 - 142 str.
...the current becomes perpendicular to the plane : hence any heel of the machine backwards or forwards removes the centre of support behind or before the point of suspension. " I referred to this in the last chapter, and gave a value for the displacement. This is a consideration...
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Design in Nature: Illustrated by Spiral and Other Arrangements in ..., Svazek 3

James Bell Pettigrew - 1908 - 370 str.
...current becomes i>er]>cndicular to the plane ; hence any heel of the nwchinf Iwckwards or forwards removes the centre of support behind or before the point of suspension " (Nicholson's Journal, vol. xxv. p. 83). When thspeed attained by the bird is greatly accelerated,...
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The Aero Manual: A Manual of Mechanically-propelled Human Flight, Covering ...

1909 - 196 str.
...current decreases these centres approach and coincide when the current becomes perpendicular to the sail. Hence, any heel of the machine backward or forward...lever equal in length to the distance the centre has moved. To render the machine perfectly steady and to enable it to ascend and descend in its path it...
Úplné zobrazení - Podrobnosti o knize




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