 | Aeronautical Society of Great Britain - 1871 - 588 oldal
...the limits to which this principle, which is the true basis of aerial navigation, can be carried, and the perfect ease with which some birds are suspended...wings, encourages the idea that a slight power only is required. an opportunity to try the effect of, excepting as to its proper balance and security. It... | |
 | James Means - 1894 - 224 oldal
...limits to which this principle, which is the true basis of aerial navigation, can be carried ; and the perfect ease with which some birds are suspended...Journal, I propose, with your approbation, to furnish these in your subsequent numbers ; taking this opportunity to observe, that perfect steadiness, safety,... | |
 | James Means - 1910 - 272 oldal
...the limits to which this principle, which is the true basis of aerial navigation, can be carried; and the perfect ease with which some birds are suspended...Journal, I propose, with your approbation, to furnish these in your subsequent numbers; taking this opportunity to observe, that perfect steadiness, safety,... | |
 | Sir George Cayley, Bart - 1910 - 114 oldal
...the limits to which this principle, which is the true basis of aerial navigation, can be carried; and the perfect ease with which some birds are suspended...wings, encourages the idea that a slight power only is required. I have myself made a large machine on this principle, large enough for aerial navigation,... | |
 | John David Anderson - 1998 - 498 oldal
...the limits to which this principle, which is the true basis of aerial navigation, can be carried; and the perfect ease with which some birds are suspended...encourages the idea, that a slight power only is necessary. Thus, Cayley recognized the role played by parasite drag; a finite parasite drag prevents the L/D ratio... | |
 | 2003 - 776 oldal
...the limits to which this principle, which is the true basis of aerial navigation, can be carried; and the perfect ease with which some birds are suspended...Journal, I propose, with your approbation, to furnish these in your subsequent numbers; taking this opportunity to observe, that perfect steadiness, safety,... | |
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... diminished, and consequently the propelling force, in the same ratio. In practice, the extra resistance of the car and other parts of the machine, which consume a considerable portion of power, will regulate the limits to which this principle, which... 