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时间: 2019年12月15日 05:58

In the same year Paul Haenlein, working in Vienna, produced an airship which was a direct forerunner of the Lebaudy type, 164 feet in length, 30 feet greatest diameter, and with a cubic capacity of 85,000 feet. Semi-rigidity was attained by placing the car as close to the envelope as possible, suspending it by crossed ropes, and the motive power was a gas engine of the Lenoir type, having four horizontal cylinders, and giving about 5 horse-power with a consumption of about 250 cubic feet of gas per hour. This gas was sucked from the envelope of the balloon, which was kept fully inflated by pumping in compensating air to the air bags inside the main envelope. A propeller, 15 feet in diameter, was driven by the Lenoir engine at 40 revolutions per minute. This was the first instance of the use of an internal combustion engine in connection with aeronautical experiments. Dear Kind-Trustee-Who-Sends-Orphans-to-College, Note.鈥擜ny profits derived by A. L. O. E.鈥檚 relatives from the publication of this volume will be apportioned among those Missionary Societies in which she was especially interested. The Cosmos 鈥楯upiter鈥?was鈥攆or it is no longer being made鈥攁 450 horse-power nine-cylinder radial engine, air-cooled, with the cylinders set in one single row; it was made both geared to reduce the propeller revolutions relatively to the crankshaft revolutions, and ungeared; the normal power of the geared type was 450 horse-power, and the total weight of the engine, including carburettors, magnetos, etc., was only 757 lbs.; the engine speed was 1,850 revolutions per minute, and the propeller revolutions were reduced by the gearing to 1,200. Fitted to a 鈥楤ristol Badger鈥?aeroplane, the total weight was 2,800 lbs, including pilot, passenger, two machine-guns, and full military load; at 7,000 feet the registered speed, with corrections for density, was 137 miles per hour; in climbing, the first 2,000 feet was accomplished in 1 minute 4 seconds; 4,000 feet was reached in 2 minutes 10 seconds; 6,000 feet was reached in 3 minutes 33 seconds, and 7,000466 feet in 4 minutes 15 seconds. It was intended to modify the plane design and fit a new propeller, in order to attain even better results, but, if trials were made with these modifications, the results are not obtainable. On the very summit of the hill, all over the ravine which divided it from another, and which has been filled up at an enormous cost, and then on the top of that other hill beyond, temples are piled up, shining against the too-blue sky, with pointed roofs of stone, scorched by the sun or stained by the rain, and patterned with pale-hued lichens. Above each a spear stands up, impaling a metal ball. In infinite variety, differing in materials, style, and proportions, some quite small, as if they had sprouted round the base of others that are gigantic, there are here five thousand temples built by the faithful, who are incessantly erecting more, devoting great fortunes to the vanity of leaving a chapel that bears their name. Oh, I daresay he does not mind me; does not think me of importance enough to be taken any notice of. But I cannot help observing that he always keeps out of the way as much as possible when I am spending an evening here. 欧美免费观看全部完 � When dinner was announced, Castalia sent word that she had a headache and could not eat. She was lying down in her own room. Her husband murmured a few words of sympathy, but ate his dinner with no sensible diminution of appetite, and, as soon as it was despatched, he lit a cigar, wrapped himself in his great-coat, and went out. � She drew back with a hurt sense of having been unappreciated. The tears sprang to her eyes, and she put her hand into her pocket to take her handkerchief. The hand fell on something that rustled, and was stiff. It was the letter cover she had found in her husband's office that morning. The touch of the crisp paper recalled not only the events of the afternoon, but her own sensations during them. "Where were you this afternoon?" she asked, suddenly checking her tears, as the dry, burning, jealous feeling awoke again in her heart. Stringfellow and Henson became associated,60 after the conception of their design, with an attorney named Colombine, and a Mr Marriott, and between the four of them a project grew for putting the whole thing on a commercial basis鈥擧enson and Stringfellow were to supply the idea; Marriott, knowing a member of Parliament, would be useful in getting a company incorporated, and Colombine would look after the purely legal side of the business. Thus an application was made by Mr Roebuck, Marriott鈥檚 M.P., for an act of incorporation for 鈥楾he Aerial Steam Transit Company,鈥?Roebuck moving to bring in the bill on the 24th of March, 1843. The prospectus, calling for funds for the development of the invention, makes interesting reading at this stage of aeronautical development; it was as follows:鈥?