Edward Ellis - The Flying Boys in the Sky
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- Название:The Flying Boys in the Sky
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- Год:неизвестен
- ISBN:http://www.gutenberg.org/ebooks/50823
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“Aviation is the theme that fills nearly all minds and it is daily growing in importance. The possibilities are boundless; it will revolutionize travel, social life and the methods of warfare. It will render the destruction of life and property so appallingly easy that no nation will dare array itself against another. You and I are likely to see that day when: —
“‘The war drum throbs no longer and the battle flags are furled
O’er the parliament of nations, o’er a reunited world.’
“We can remember the universality of the bicycle; then came, and it stays with us, the automobile, and now it is the aeroplane. The day is near when there will be numberless routes established between cities and countries and when the ocean will be crossed east and west by a procession of heavier-than-air machines, and every family will have its hangar and its occupant awaiting the wish of the owner.”
The Professor showed a disposition to quiz the young aviator, who met him as best he could, though sensible of his lack of knowledge as compared with one who had given so much thought and experimentation to it.
“Naturally,” said he, “men’s first ideas were of using wings as birds do, but it would take a Samson or a Hercules to put forth the necessary strength. But it has been tried times without number. I think the ancient Greeks wove many romantic tales of aerial flights – ”
The Professor paused and Harvey accepted the invitation:
“Such as Daedalus and Icarus, who were said to have flown to the sun and back again. The Greek Achytus made a dove of wood, driven by heated air, and one of his countrymen constructed a brass fly which kept above the ground for some minutes.”
“Do you recall what aviator first came to grief?”
“‘Simon the Magician,’ who during the reign of the emperor Nero made a short flight before a Roman crowd but tumbled to death, as did a good many during the Middle Ages.”
“The Chinese were centuries ahead of the rest of the world in the use of the mariner’s compass, printing, gunpowder and the flying of kites. There are authentic records of balloon flights in the fourteenth century, and a hundred years later discoveries were made of which present aviators have taken advantage. You have learned that although America was visited a thousand years ago and even earlier by white men, the glory of the discovery is given to Christopher Columbus. So the credit of the first real step in aviation belongs to two Frenchmen. Can you help me to recall their names?”
“I don’t think you need any help,” laughed Harvey, who saw the drift of his friend’s quizzing, “but the men you have in mind were Joseph and Etienne Montgolfier, who lived at Annonay, about forty miles from Lyons.”
“What was their idea of aerostation?”
“They learned from many experiments that a light globe filled with hot air will rise because its weight is less than the surrounding atmosphere, just as a cork or bit of pine comes to the surface of water. They made a globular ball, thirty-five feet in diameter, of varnished silk, and in June, 1783, in the presence of an immense crowd at Annonay built a fire under the mouth on the lower side. Soon after when the ropes were loosened, the balloon mounted upward for more than a mile, then was carried to one side by a current of air and as the vapor within cooled, came gently down to earth again.
“The incident caused a sensation and Paris subscribed money for manufacturing hydrogen, a very buoyant gas to take the place of hot air. The brothers sent up such a balloon in Paris in the latter part of August. It sailed aloft for half a mile, finally drifted out of sight and came down fifteen miles from the starting point.”
“Did it carry any passenger?” asked the Professor.
“No; the time had not come for that venture, but soon after the brothers sent up a second hot air balloon at Versailles, in the presence of the king and queen. A wicker cage was suspended below and in it were a duck, a rooster and a sheep, all of which showed less excitement than the cheering thousands. It rose about a fourth of a mile, and eight minutes after leaving the ground descended two miles away.”
“Who was the first man to go up in a balloon?” asked Abisha Wharton.
“I don’t remember his name; can you tell me, Professor?”
“Pilatre de Rozier, whose ascent was made on the 15th of October, 1783, in an oval balloon constructed by the Montgolfiers. It was not quite fifty feet in diameter and half again as high. A circular wicker basket was suspended beneath, and under the neck of the balloon in the center was an iron grate or brazier supported by chains, the whole structure weighing sixteen hundred pounds. M. de Rozier fed the flames with straw and wood and thus kept the air sufficiently heated to lift him eighty-four feet, where held by ropes, the balloon remained suspended for four and a half minutes and then gently came back to earth.
“This incident blazed the way for successful aerostation. M. de Rozier accomplished higher and more durable ascents and occasionally took a passenger with him. We must remember, however, that in all these instances, the balloon was restrained by ropes and could not wander off. The aeronauts chafed under such restriction, and on November 21, 1783, M. de Rozier and the Marquis d’Arlandes cut loose from the earth in front of a royal palace in the Bois de Boulogne, it being the first time such a thing was ever done. The ascent lasted not quite half an hour, when the aeronauts came safely down in a field five miles distant from the starting point.” 1 1 It is well to bear the following distinctions in mind: aerostation is the art of flying in a balloon; when the balloon is equipped with motor and propellers so as to be navigable, it is dirigible; an aerocar is any kind of a flying machine; an aeronaut is any one who navigates the air in a balloon; an aeroplane is a flying machine which is heavier than air; a monoplane is a one-planed and a biplane a two-planed flying machine; a triplane consists of three superposed planes; a quadruplane of four planes; airmen are either aeronauts or aviators; aviation is the art of flying in an aeroplane and an aviator is one who so flies; aeronef is an aeroplane as defined by International Congress; a hangar corresponds to a garage for an automobile; ornithopter is a heavier-than-air machine, with wings upon which it depends for support and propulsion; petrol is the European name for gasoline.
CHAPTER IX
THE PROFESSOR TALKS ON AVIATION (Continued.)
Professor Morgan continued: “Thus far the aeronauts had used hot air with which to make their ascents, but the fire under the balloon was always dangerous and more than one fatal accident resulted therefrom. Hydrogen gas was far better, but more costly. Public subscriptions enabled two brothers named Robert, assisted by M. Charles, to construct a spherical balloon, twenty-eight feet in diameter, the silk envelope being covered with varnish, and the upper half inclosed in a network which supported a hoop that encircled the middle of the sphere. A boat-like structure dangled a few feet below the mouth, and was attached to the hoop, while a safety valve at the apex prevented bursting through expansion of the gas as the balloon climbed the sky.
“This structure was inflated with hydrogen gas in the Garden of the Tuileries, Paris, on the first of December, 1783. M. Charles and one of the Roberts seated themselves in the car, provided with extra clothing, provisions, sand bags for ballast, a barometer and a thermometer, and gave the word to let go. The balloon soared swiftly, the aeronauts waving hands and hats in response to the cheers of the multitudes below. The ascent was a success in every respect. Having drifted thirty miles from Paris, the balloon safely descended near Nesle. There was so much gas left that the enthusiastic M. Charles decided to go up again, after parting with his companion. He climbed nine thousand feet and then by the dexterous use of his ballast came to earth again without the least jar.
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