 | 1811 - 558 str.
...the machine be projected in a horizontal path, with a velocity sufficient to support its weight, it will retain its relative position ; like a bird in the act of skimming. " The stability in this position, arising from the centre of gravity being below the point of suspension,... | |
 | Aeronautical Society of Great Britain - 1871 - 588 str.
...its centre of resistance. which experiment shows to be considerably more forward than the centre uf the sail. Let cd be drawn perpendicular to ab, and...of gravity of the machine be at any point in that lino as at d ; then if it be projected in a horizontal path. with velocity enough to support the weight,... | |
 | James Means - 1894 - 224 str.
...longitudinal section of a sail, and let C be its centre of resistance, which experiment shows to be considerably more forward than the centre of the sail....like a bird in the act of skimming ; for, drawing CE perpendicular to the horizon, and DE parallel to it, the line CE will, at some particular moment,... | |
 | 1894 - 642 str.
...resistance, which experiment shows to be considerably more forward than the centre of the sail. I^et CD be drawn perpendicular to AB, and let the centre...like a bird in the act of skimming ; for, drawing CE perpendicular to the horizon, and DE parallel to it, the line CE will, at some particular moment,... | |
 | Sir George Cayley, Bart - 1910 - 114 str.
...longitudinal section of a sail, and let с be its centre of resistance, which experiment shows to be considerably more forward than the centre of the sail....position like a bird in the act of skimming, for drawing ce perpendicular to the horizon, and de parallel to it, the line ce will, at some particular moment,... | |
 | 2003 - 776 str.
...longitudinal section of a sail, and let C be its centre of resistance, which experiment shows to be considerably more forward than the centre of the sail....position, like a bird in the act of skimming; for, drawing CE perpendicular to the horizon, and DE parallel to it, the line C E will, at some particular moment,... | |
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C be its centre of resistance, which experiment shows to be considerably more forward than the centre of the sail. Let CD be drawn perpendicular to AB, and let the centre of gravity of the machine be at any point in that line, as at D. Then, if it be... 