قراءة كتاب The Aeroplane

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The Aeroplane

The Aeroplane

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دار النشر: Project Gutenberg
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VII.   A Farman in Flight 116 VIII.   The Gnome Motor 122 IX.   The First High-powered Bleriot 134 X.   Maurice Farman Biplane 150 XI.   An Airman’s Point of View 164 XII.   The London Aerodrome from Above 188 XIII.   An Aeroplane Factory 202 XIV.   Biplane circling a Pylon 230 XV.   View from a Craft ascending 240 XVI.   The Grahame-White “Aerobus” 252


THE AEROPLANE

CHAPTER I
WHAT EARLY HISTORY TELLS

Simon the magician—A monk who sprang from a tower—The Saracen who “rose like a bird.”

In learning to fly, men have passed through five definite and clearly-marked stages which have extended over centuries, and cost many lives. These five stages may be summarized thus:

1. Haphazard and foolhardy tests—ending generally in death.

2. A period of scientific research, in which the flight of birds was studied and experiments made with lifting planes of various shapes.

3. A phase during which engineers built large, power-driven machines, but had not the skill to control them when in flight.

4. A stage in which, making a simple apparatus of wings, men glided from hilltops, and learned to balance themselves while in the air.

5. The stage in which, perfecting the gliding machines they had learned to control, men fitted petrol motors to them, and achieved at last a power-driven flight.

In dim, remote ages, watching winged creatures as they skimmed above the earth, men longed passionately to fly; instead of scaling hills or creeping through woods, they desired to pass high above them; to spurn the obstructions of creatures earth-bound, and fly over mountains and seas. This longing to fly, even at the risk of life itself, was expressed beautifully by Otto Lilienthal, the greatest of the pioneers. He wrote:

“With each advent of spring, when the air is alive with innumerable happy creatures; when the storks, on their arrival at their old northern resorts, fold up the imposing flying apparatus which carries them thousands of miles, lay back their heads and announce their arrival by joyfully rattling their beaks; when the swallows have made their entry and hurry through our streets and pass our windows in sailing flight; when the lark appears as a dot in the ether and manifests its joy of existence by its song; then a certain desire takes possession of man. He longs to soar upward and to glide free as a bird over smiling fields, leafy woods, and mirror-like lakes, and so enjoy the fairy landscape as only a bird can do.”

But man’s first attempts to fly were ill-judged and foolish. He failed to understand the problems involved; he forgot that, even were he able to build a machine which would navigate the air, he must learn to control this craft; must learn to steer and balance it, and make it ride the gusts. One might, for example, take a bicycle and say to a man: “Here is a machine that can be propelled along the road; mount it and ride away.” But if the man had not learned to handle a bicycle, and balance himself on one, he would swerve for a few yards and then fall. So with the man who, without forethought or study, sought to navigate the air.

Probing the recesses of history we find that, even as far back as the reign of the Emperor Nero, there was one Simon the magician who—if legend can be credited—sought “to rise towards Heaven.” Simon, it would seem, actually lifted himself into the air by the use of some apparatus; but what this device was legend does not state. The spectators seem to have been horrified, and Simon’s ascent into the air was attributed to “the assistance of Beelzebub.” His triumph was short-lived, for, as the legend goes on to record, he fell to the earth and was killed. And this fate befell many who, in those very early days, made flimsy wings and threw themselves from towers or the tops of hills. Simon, it is thought, may have had some method in his apparent madness. He may, for instance, have made a lifting plane and discovered that, if he placed himself in a rising current of air, the effect would be to raise him from the ground; and this suggestion has a greater probability when we remember that in warm, southern lands there are often strong up-currents of air upon which birds will soar, with wings motionless. But what machine Simon used, and how he made his flight—if he did—are questions that remain unanswered.

_

Fig. 1.

Looking back into history, one fact is striking; and this is the part that monks played in studying flight. They had leisure to think, and time in which to make tests; and in many a monastery, hundreds of years ago, quaint theories were propounded and queer craft planned. In the eleventh century, at Malmesbury in England, there was a Benedictine monk named Elmerus, or Oliver, more ambitious than many of his

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