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'In fact, this assumption of the possibility of obtaining command of an unlimited ascensional force has suggested, to certain enthusiastic partisans of M. Pétin's theory and plans, a long perspective of astounding visions, from which sober-minded Englishmen would, in all probability, turn away with derision.
It was manifest that the cyclone was advancing with fearful velocity straight towards the regions of the pole. "Higher!" said Robur. "Higher it is," said Tom Tumor. An extreme ascensional power was communicated to the aeronef, and she shot up slantingly as if she was traveling on a plane sloping downwards from the southwest.
He hired the sumptuous hotel he inhabited at the top of the Champs Elysees, when houses were rather scattered there. Fashion, and the ascensional movement of Paris toward the Arc de Triomphe, had come to seek him. His house was rich in beautiful pictures and rare books, and he sometimes received there his few real friends, his companions in troublous times, like Varhely.
The air affords a solid fulcrum. If you will give a column of air an ascensional movement of forty-five meters a second, a man can support himself on the top of it if the soles of his boots have a superficies of only the eighth of a square meter. And if the speed be increased to ninety meters, he can walk on it with naked feet.
From close investigation of the log-book and the diagrams which had been prepared, it was found that the maximum speed attained by Zeppelin IV during this momentous flight was only 45 miles per hour! It was ascertained, moreover, that the load was 10,560 pounds, and the ascensional effort 45,100 pounds.
In 1853 came Beleguic and his aeroplane with the traction screws, Vaussin-Chardannes with his guidable kite, and George Cauley with his flying machines driven by gas. From 1854 to 1863 appeared Joseph Pline with several patents for aerial systems. Breant, Carlingford, Le Bris, Du Temple, Bright, whose ascensional screws were left-handed; Smythies, Panafieu, Crosnier, &c.
A chafing-dish was suspended beneath the orifice of the balloon; when the voyagers wished to ascend, they threw, with a long fork, straw upon this brazier, at the risk of burning the machine, and the air, growing warmer, gave to the balloon a new ascensional force.
The German armament manufacturers endeavoured to solve the problem by using smoking shells or missiles fitted with what are known as tracers. By following the ascensional path of the projectiles as revealed by the smoke it was possible to draw certain conclusions. But these were by no means convincing or illuminating, as so many factors affected the issue.
Nevertheless, while we were speaking we were still ascending; we passed the whole night going up, or to speak more scientifically, in an ascensional motion. The fearful noise redoubled; I was ready to suffocate. I seriously believed that my last hour was approaching, and yet, so strange is imagination, all I thought of was some childish hypothesis or other.
He hired the sumptuous hotel he inhabited at the top of the Champs Elysees, when houses were rather scattered there. Fashion, and the ascensional movement of Paris toward the Arc de Triomphe, had come to seek him. His house was rich in beautiful pictures and rare books, and he sometimes received there his few real friends, his companions in troublous times, like Varhely.
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