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时间: 2019年12月11日 02:55

Ferber鈥檚 chief contemporaries in France were179 Santos-Dumont, of airship fame, Henri and Maurice Farman, Hubert Latham, Ernest Archdeacon, and Delagrange. These are names that come at once to mind, as does that of Bleriot, who accomplished the second great feat of power-driven flight, but as a matter of fact the years 1903-10 are filled with a little host of investigators and experimenters, many of whom, although their names do not survive to any extent, are but a very little way behind those mentioned here in enthusiasm and devotion. Archdeacon and Gabriel Voisin, the former of whom took to heart the success achieved by the Wright Brothers, co-operated in experiments in gliding. Archdeacon constructed a glider in box-kite fashion, and Voisin experimented with it on the Seine, the glider being towed by a motor-boat to attain the necessary speed. It was Archdeacon who offered a cup for the first straight flight of 200 metres, which was won by Santos-Dumont, and he also combined with Henri Deutsch de la Meurthe in giving the prize for the first circular flight of a mile, which was won by Henry Farman on January 13th, 1908. � 鈥?. That the ratio of drift to lift in well-shaped165 surfaces is less at angles of incidence of 5 degrees to 12 degrees than at an angle of 3 degrees. Just as records were made abroad, with one exception, so were the really efficient engines. In England there was the Green engine, but the outbreak of war found the Royal Flying Corps with 80 horse-power Gnomes, 70 horse-power Renaults, and one or two Antoinette motors, but not one British, while the Royal Naval Air Service had got 20 machines with engines of similar origin, mainly land planes in which the wheeled undercarriages had been replaced by floats. France led in development, and there is no doubt that at the outbreak of war, the French military aeroplane service was the best in the world. It was mainly composed of Maurice Farman two-seater biplanes and Bleriot monoplanes鈥攖he latter type banned for a period on account of a number of serious accidents that took place in 1912. � At length one day came a letter to Castalia, with the London post-mark and sealed with the well-known coat of arms, but it did not bear Lord Seely's frank. Another name was scrawled in the corner, and the direction was written in Lady Seely's crooked, cramped little characters. 男女啪啪啪_男女直接做的视频_男女做爰高清免费视频 The cylinders are made from steel forgings, as are the valve chamber elbows, which are machined all over and welded together. A jacket of light steel is welded over the valve elbows and attached to a flange on the cylinders, forming a water-cooling space with a section of about 7/16 of an inch. The cylinder bore is 5鈥? inches, and the stroke 6鈥?9 inches. The cylinders are attached to the crank case by means of dogs and long through bolts, which have shoulders near their lower ends and are bolted to the lower half of the crank chamber. A very light and rigid structure is thus obtained, and the method of construction won the flattery of imitation by makers of other nationality. Though I do not wish in these pages to go back to the origin of all the Trollopes, I must say a few words of my mother 鈥?partly because filial duty will not allow me to be silent as to a parent who made for herself a considerable name in the literature of her day, and partly because there were circumstances in her career well worthy of notice. She was the daughter of the Rev. William Milton, vicar of Heckfield, who, as well as my father, had been a fellow of New College. She was nearly thirty when, in 1809, she married my father. Six or seven years ago a bundle of love-letters from her to him fell into my hand in a very singular way, having been found in the house of a stranger, who, with much courtesy, sent them to me. They were then about sixty years old, and had been written some before and some after her marriage, over the space of perhaps a year. In no novel of Richardson鈥檚 or Miss Burney鈥檚 have I seen a correspondence at the same time so sweet, so graceful, and so well expressed. But the marvel of these letters was in the strange difference they bore to the love-letters of the present day. They are, all of them, on square paper, folded and sealed, and addressed to my father on circuit; but the language in each, though it almost borders on the romantic, is beautifully chosen, and fit, without change of a syllable, for the most critical eye. What girl now studies the words with which she shall address her lover, or seeks to charm him with grace of diction? She dearly likes a little slang, and revels in the luxury of entire familiarity with a new and strange being. There is something in that, too, pleasant to our thoughts, but I fear that this phase of life does not conduce to a taste for poetry among our girls. Though my mother was a writer of prose, and revelled in satire, the poetic feeling clung to her to the last. 390 Daimler, from 1882 onward, devoted his attention to the perfecting of the small, high-speed petrol engine for motor-car work, and owing to his efforts, together with those of other pioneer engine-builders, the motor-car was made a success. In a few years the weight of this type of engine was reduced from near on a hundred pounds per horse-power to less than a tenth of that weight, but considerable further improvement had to be made before an engine suitable for use with aircraft was evolved. � �