vehicles of air1910 |
Obsah
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Iné vydania - Zobraziť všetky
Vehicles of the Air: A Popular Exposition of Modern Aeronautics, with ... Victor Lougheed Úplné zobrazenie - 1911 |
Časté výrazy a frázy
adjustment aerial vehicles aero aeronautical aeroplane afford Alberto Santos-Dumont alighting gear Antoinette Antoinette IV application automobile ball bearings Biplane birds blade Bleriot XI Chalons considerable construction Curtiss curved cylinder device diameter dirigible balloons edge effect elements ends engine Farman feet flat flight flying machine force France front fuel gliding helicopter Henry Farman horizontal horsepower Hubert Latham ignition illustrated in Figure Leon Delagrange less lift load Louis Bleriot lubrication material means mechanism ment metal miles an hour modern Monoplane Montgomery motor movement operation ornithopter Orville Wright plain bearings plane portion possible practical pressure propeller propulsion rear resistance result Rheims roller rotation rudder sections secured shaft shown in Figure side soaring speed starting steam steel steering successful sustention tail-surface thrust tion velocity vertical Voisin weight wheel Wilbur Wright wind wing surfaces wing warping wire Wright machines
Populárne pasáže
Strana 276 - ... pistons and cylinders being solely a relative reciprocation since both travel in circular paths, that of the pistons, however, being eccentric by one-half of the stroke length to that of the cylinder. The Gnome is a considerable consumer of lubricant, the makers' estimate being 7 pints an hour for the 100 horse-power motor; but in practice this is largely exceeded.
Strana 129 - At times the speed, as estimated by eye witnesses, was over sixty-eight miles an hour, and yet after a flight of approximately eight miles in twenty minutes the machine was brought to rest upon a previously designated spot, three-quarters of a mile from where the balloon had been released, so lightly that the aviator was not even jarred, despite the fact that he was compelled to land on his feet, not on a special alighting gear.
Strana 448 - ... its original position becomes an efficient lifting-surface whenever the speed of the machine is accidentally reduced very much below the normal, and thus largely counteracts that backward travel of the centre of pressure on the aeroplanes which has frequently been productive of serious injuries by causing the machine to turn downward and forward and strike the ground head-on. We are aware that a forward horizontal rudder of different construction has been used in combination with a supporting...
Strana 137 - On one occasion, Maloney in trying to make a very short turn during rapid flight pressed very hard on the stirrup which gives a screw shape to the wings and made a side somersault. The course of the machine was very much like one turn of a corkscrew. After this movement, the machine continued on its regular course. And afterwards Wilkie, not to be outdone by Maloney, told his friends he would do the same, and in a subsequent flight, made two side somersaults, one in one direction and the other in...
Strana 140 - ... slip of the smaller area of screw. The theory of the strong lifting power of planes at very oblique incidences, moving rapidly through the air, having now to some extent been practically tested, a few words may not be out of place concerning the position or arrangement of those planes. Mr. Wenham, in a Paper read at the first Meeting of the Aeronautical Society, brought forward a number of examples in evidence of this great lifting force, but without defining any exact law, merely relying upon...
Strana 136 - This line of action caused a good deal of trouble with aeronauts or riders who had unbounded confidence and wanted to make long flights after the first few trials, but I found it necessary as they seemed slow in comprehending the important elements and were too willing to take risks. To give them the full knowledge in these matters I was formulating plans for a large starting station on the Mount Hamilton Eange from which I could launch an aeroplane capable of carrying two, one of my aeronauts and...
Strana 136 - NAVIGATION were too willing to take risks. To give them the full knowledge in these matters I was formulating plans for a large starting station on the Mount Hamilton Range from which I could launch an aeroplane capable of carrying two, one of my aeronauts and myself, so I could teach him by demonstration. But the disasters consequent on the great earthquake, completely stopped all my work on these lines. The flights that were given were only the first of the series with aeroplanes patterned after...
Strana 142 - It was not until nearly the end of September, 1905, months after Montgomery's flights in the Santa Clara Valley and publication of his construction, and some time after his patent was applied for, that the Wrights commenced to be conspicuously successful — with parabolically-curved sustaining surfaces and a system of wing-warping closely resembling that of Montgomery's patent and not at all like that claimed in the Wright patent (see Figure 260). Following these successes, which though well authenticated...
Strana 448 - ... of the aeroplanes. With the parts of the machine in this position it will be seen that the lateral margins ad and eh present a larger angle of incidence to the resisting air, while the lateral margins on the other side of the machine present a smaller angle of incidence. Owing to this fact, the side of the machine presenting the larger angle of incidence will tend to lift or move upward, and this upward movement will restore the lateral balance of the machine. When the other side of the machine...
Strana 448 - ... of the aeroplanes said depression is not necessarily sufficient to carry them below the horizontal planes passing through the rear corners on that side. Moreover, although we prefer to so construct the apparatus that the movements of the lateral margins on the opposite sides of the machine are equal in extent and opposite in direction, yet our invention is not limited to a construction producing this result, since it may be desirable under certain circumstances to move the lateral margins on...