The New Art of FlyingDodd, Mead, 1911 - 291 strani |
Druge izdaje - Prikaži vse
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aëro aerodrome aëronaut aëroplane ailerons air pressure air-craft airship angle of incidence Antoinette monoplane aviator aviator's balloon blades Blériot monoplane Blériot XI centre of air centre of gravity chine Clément-Bayard crank Curtiss curved cylinders derrick device dirigible drive Edwin Levick Fig elevation rudder employed engine entering edge equilibrium Farman biplane Farman machine feet flight flying flying-machine front George Brayton glide Gnôme ground gyrostat Hence Henry Farman high speed horizontal or elevation horizontal rudder horse-power Hubert Latham kite Langley launching layer lever lifting power Louis Blériot main planes miles an hour military monoplane motion mounted moving Observatory operated Ornithopter Photograph by Edwin pilot pitch projectiles rear resistance revolutions a minute Richard Assmann screw shown in Fig side to side side-to-side balance skids stability supporting surface tail tion turn velocity vertical rudder warp weather wheels wind wings wire Wright biplane Wright Brothers Wright machine
Priljubljeni odlomki
Stran 179 - The contracting powers agree to prohibit, for a period extending to the close of the Third Peace Conference, the discharge of projectiles and explosives from balloons or by other new methods of a similar nature.
Stran 6 - An approach to within eighty yards arouses the king of birds from his apathy. He partly opens his enormous wings, but stirs not yet from his station. On gaining a few feet more he begins to walk away, with half-expanded, but motionless wings. Now for the chance fire! A charge of No. 3 from...
Stran 166 - ... weigh so little that it seemed impossible to make it. These were the difficulties that I still found myself in after two years of experiment, and it seemed at this stage again as if it must, after all, be given up as a hopeless task, for somehow the thing had to be built stronger and lighter yet. Now, in all ordinary construction, as in building a steamboat or a house, engineers have what they call a factor of safety. An iron column, for instance, will be made strong enough to hold five or ten...
Stran 38 - ... great many places were examined along the shores of the Potomac, and on its high bluffs, which were condemned partly for their publicity, but partly for another reason. In the course of my experiments I had found out, among the infinite things pertaining to this problem, that the machine must begin to fly in the face of the wind, and just in the opposite way to a ship, which begins its voyage with the wind behind it. If the reader has ever noticed a soaring bird get upon the wing, he will see...
Stran 38 - ... that the machine must begin to fly in the face of the wind and just in the opposite way to a ship, which begins its voyage with the wind behind it. If the reader has ever noticed a soaring bird get upon the wing he will see that it does so with the breeze against it, and thus whenever the aerodrome is cast into the air it must face a wind which may happen to blow from the north, south, east, or west, and we had better not make the launching station a place like the bank of a river, where it can...
Stran 46 - The rear guy-post seemed to drag, bringing the rudder down on the launching ways, and a crashing, rending sound, followed by the collapse of the rear wings, showed that the machine had been wrecked in the launching, just how, it was impossible for me to see.
Stran 7 - The marks of his claws are traceable in the sandy soil, as, at first with firm and decided digs, he forced his way, but as he lightened his body and increased his speed with the aid of his wings, the imprints of his talons gradually merged into long scratches. The measured distance from the point where these vanished, to the place where he had stood, proved that with all the stimulus that the shot must have given to his exertions, he had been compelled to run full twenty yards before he could raise...
Stran 41 - This sounds reasonable, but is absolutely impracticable, for when the aerodrome is set up any where in the open air we find that the very slightest wind will turn it over, unless it is firmly held. The whole must be in motion, but in motion from something to which it is held till that critical instant when it is set free as it springs into the air. The...
Stran 97 - Good results can never be obtained by placing the screw in front instead of in the rear of the machine. If the screw is in front, the backwash strikes the machine and certainly has a decidedly retarding action.
Stran 43 - ... patience, but it was repeated in December, when five fruitless trips were made, and thus nine such trips were made in these two months, and but once was the aerodrome even attempted to be launched, and this attempt was attended with disaster. The principal cause lay, as I have said, in the unrecognized amount of difficulty introduced even by the very smallest wind, as a breeze of three or four miles an hour, hardly perceptible to the face, was enough to keep the airship from resting in place...