 | Aeronautical Society of Great Britain - 1877 - 556 pages
...enough ? Mr. Wenham, in his Paper, read at the first meeting of the Aeronautical Society, says: — "Having remarked how thin a stratum of air is displaced...dozen pelicans may fly one above the other without material impediment, as if framed together ; and it is thus shown how two hundredweight may be supported... | |
 | Aeronautical Society of Great Britain - 1883 - 488 pages
...superposed planes, conveyed in a Paper read at a General Meeting of the Society. It reads as follows: — "Having remarked how thin a stratum of air is displaced...length of plane for supporting heavy weights, the surface may be superposed, or placed in parallel rows with an interval between them. A dozen pelicans... | |
 | 1867 - 552 pages
...breadth to the weight that has to be carried. The possible solution of the problem is thus explained. " Having remarked how thin a stratum of air is displaced...interval between them. A dozen pelicans may fly one above another without mutual impediment, as if framed together ; and it is thus shown how two hundred weights... | |
 | 1881 - 648 pages
...deviations are admissible, provided the theoretical conditions involved in (light are borne in mind. Having remarked how thin a stratum of air is displaced...length of plane for supporting heavy weights, the surface may be superposed, or placed in parallel rows, with an interval between them. A dozen pelicans... | |
 | Smithsonian Institution. Board of Regents - 1890 - 928 pages
...deviations are admissible, provided the theoretical conditions involved in flight are borne in mind. Having remarked how thin a stratum of air is displaced...flight, it follows that in order to obtain the necessary lenglhof plane for supporting heavy weights, the surfaces may be superposed, or placed in parallel... | |
 | Nicholas Patrick Wiseman - 1890 - 546 pages
...balloons for purposes of war, though their employment would be dependent on the force of the wind. A thin stratum of air is displaced beneath the wings of a bird in rapid flight, and it follows that, in order to obtain the necessary length of plane for supporting heavy weights,... | |
 | Octave Chanute - 1894 - 330 pages
...valuable discussion of the problem of flight, and with the following description of his experiments : Having remarked how thin a stratum of air is displaced...with an interval between them. A dozen pelicans may ifly, one above the other, without mutual impediment, as if framed together ; and it is thus shown... | |
 | James Means - 1894 - 224 pages
...deviations are admissible, provided the theoretical conditions involved in flight are borne in mind. Having remarked how thin a stratum of air is displaced...that in order to obtain the necessary length of plane of supporting heavy weights, the surfaces may be superposed, or placed in parallel rows, with an interval... | |
 | 1894 - 642 pages
...deviations are admissible, provided the theoretical conditions invoJved in flight are borne in mind. Having remarked how thin a stratum of air is displaced...flight, it follows that in order to obtain the necessary lengtli of plane of supporting heavy weights, the surfaces may be superposed, or placed in parallel... | |
 | Victor Lougheed - 1910 - 630 pages
...the most interesting portion is as follows: "Having remarked how thin a stratum ia displaced heneath the wings of a bird in rapid flight, it follows that,...dozen pelicans may fly one above the other without material impediment; as if framed together; and it is thus shown how two hundredweight may be supported... | |
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Having remarked how thin a stratum of air is displaced beneath the wings of a bird in rapid flight, it follows that, in order to obtain the necessary length of plane for supporting heavy weights, the surfaces may be superposed, or placed in parallel rows,... 
