 | Royal Society (Great Britain) - Meteorology - 1809 - 778 pages
...motion to rest, we shall find that of N° 1, (relative to the quantity of cloth) the greatest of all. But if the sails are intended, with given dimensions, to produce the greatest effect possible in a given time, we must entirely reject those of N° 1 ; and if we are confined to... | |
 | Olinthus Gregory - Mechanical engineering - 1815 - 582 pages
...; and this is the angle most commonly in use when the sails are planes. See art. 547. vol. i. (3.) Were nothing more requisite than to cause the sails...made use of, confine our angle within the limits of 1'2 and 75 degrees. (4.) The variation of a degree or two, M-hen the angle is near the best, is but... | |
 | Olinthus Gregory - Mechanical engineering - 1815 - 632 pages
...45; and this is the angle most commonly in use when the sails are planes. See art. 547. vol. i. (3.) Were nothing more requisite than to cause the sails...position recommended by M. Parent would be the best. Hut if the sails are intended with given dimensions to produce the greatest effects possible in a given... | |
 | John Nicholson - Machinery - 1825 - 822 pages
...acquire motion from a state of rest, or to prevent it from passing into rest from a state of motion, the position recommended by M. Parent would be the best; but if the sails are intended, with given directions, to produce the greatest effect possible in a given time, we must reject M. Parent' » position;... | |
 | Thomas Tredgold - Hydraulic engineering - 1836 - 288 pages
...motion to rest, we shall find that of No. 1 (relative to the quantity of cloth) the greatest of all. But if the sails are intended, with given dimensions, to produce the greatest effect possible in a given time, we must entirely reject those of No. 1, and if we are confined to... | |
 | Olinthus Gilbert Gregory - 1848 - 572 pages
...proportion of 31 to +5; and this is the angle most commonly in use when the sails are planes. (3.) \Vcre nothing more requisite than to cause the sails to...intended, with given dimensions, to produce the greatest effect possible in a given time, we must, if planes are made use of, confine our angle within the limits... | |
 | Olinthus Gregory - 1863 - 482 pages
...proportion of 31 to 45 ; and this is the angle most commonly in use when the sails arc planes. (3.) Were nothing more requisite than to cause the sails...Parent would be the best. But if the sails are intended wjth given dimensions to produce the greatest effects possible in a given time, we must, if planes... | |
 | 1879 - 542 pages
...motion to rest, we shall find that of No. 1 (relative to the quantity of cloth) the greatest of all. Bat if the sails are intended, with given dimensions, to produce the greatest effect possible in a given time, we must entirely reject those of No. 1, and if we are confined to... | |
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Were nothing more requisite than to cause the sails to acquire a certain degree of velocity by the wind, the position recommended by M. Parent would be the best. But if the sails are intended with given dimensions to produce the greatest effects possible... 