 | James Means - 1910 - 272 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... | |
 | Francis Herbert Wenham - 1910 - 168 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 beneath the wing's of a bird in rapid flight, it follows that in order to obtain the necessary length of plane... | |
 | Smithsonian Institution. Board of Regents - 1890 - 870 pages
...deviations are admissible, provided the theoretical conditions involved in flight arc borne in mind. Having remarked how thin a stratum of air is displaced...in rapid flight, it follows that in order to obtain llie necessary length of plane for supporting heavy weights, the surfaces uinj be superposed, or placed... | |
 | Octave Chanute - 1997 - 340 pages
...of air is displaced heneath the wings of a hird in rapid Bight, it follows that in order to ohtain the necessary length of plane for supporting heavy weights, the surfaces may he superposed or placed in parallel rows, with an interval hetween them. A dozen pelicans may fly,... | |
 | 2003 - 776 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... | |
 | 1890 - 876 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...placed in parallel rows, with an interval between then. A dozen pelicans may fly one above the other without mutual impediment, as if framed together;... | |
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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,... 
