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时间: 2019年12月08日 19:09

VIII AMERICAN GLIDING EXPERIMENTS An idea of the state of development arrived at about this time may be gained from the fact that the Commandant of the Military Wing of the Royal Flying Corps in a lecture before the Royal Aeronautical Society read in February, 1913, asked for single-seater scout aeroplanes with a speed of 90 miles an hour and a landing speed of 45 miles an hour鈥攁 performance which even two years later would have been considered modest in the extreme. It serves to show that, although higher performances were put up by individual machines on occasion, the general development had not yet reached the stage when such performances could be obtained in machines suitable for military purposes. So far as seaplanes were concerned, up to the beginning of 1913 little attempt had been made to study the novel problems involved, and the bulk of the machines at the Monaco Meeting in April, 1913, for instance, consisted of land301 machines fitted with floats, in many cases of a most primitive nature, without other alterations. Most of those which succeeded in leaving the water did so through sheer pull of engine power; while practically all were incapable of getting off except in a fair sea, which enabled the pilot to jump the machine into the air across the trough between two waves. Stability problems had not yet been considered, and in only one or two cases was fin area added at the rear high up, to counterbalance the effect of the floats low down in front. Both twin and single-float machines were used, while the flying boat was only just beginning to come into being from the workshops of Sopwith in Great Britain, Borel-Denhaut in France, and Curtiss in America. In view of the approaching importance of amphibious seaplanes, mention should be made of the flying boat (or 鈥榖at boat鈥?as it was called, following Rudyard Kipling) which was built by Sopwith in 1913 with a wheeled landing-carriage which could be wound up above the bottom surface of the boat so as to be out of the way when alighting on water. Algy looked after her, with his head bent down and his eyebrows raised. Castalia was really very trying to live with. As to her refusal to write to her uncle, she would not of course persist in it. It was out of the question that she should persist in opposing any wish of his. But she was really very trying. She answered so faintly that he had to strain his ear to hear her, and her colourless lips trembled as the lips tremble of a person trying to keep back tears. But her eyes were quite dry. Corinna looked at Bigourdin. 鈥淗e鈥檚 raving mad,鈥?she said. Then he took his leave, an accepted lover; and he told himself that he was a very fortunate and happy man. As he passed the door of old Max's little parlour downstairs, he saw a light gleaming under the door into the almost dark passage. He stopped and tapped at the door. "Come in," said Jonathan Maxfield's harsh voice. And Diamond went into the parlour. 亚洲 欧美 日韩 一区|国产在线久久久|亚洲Av-宅男色影视|日本阿v视频高清v Among the guests were Chief McNab, who had left the Highlands of Scotland with a numerous clan, and taken up his abode with them in a township which had been granted to him on the banks of Lake de Chats, about thirty miles from Bytown. Nothing could have been better for Algernon's case than that letter. Instead of being the cause of his disgrace and exposure, it was obviously the means of confirming every one of his statements, implied as well as expressed. It showed clearly enough鈥攆irst, that Algernon had given Lord Seely to understand that his wife laboured under grave suspicions of having stolen money-letters from the Whitford Post-office; secondly, that he (Algernon) believed those suspicions to be well founded; thirdly, that symptoms of mental aberration, which had recently manifested themselves in Castalia, were at once the explanation of, and the excuse for, her conduct. This letter, which, if Castalia were alive to speak for herself, would have been like a brand on her husband's forehead for life, was now a most valuable testimony in his favour. It was a lovely soft spring morning at the end of March, and unusually balmy for the time of year; even Ernest鈥檚 melancholy was relieved for a while by the look of spring that pervaded earth and sky; but it soon returned, and smiling sadly he said to himself: 鈥淚t may bring hope to others, but for me there can be no hope henceforth.鈥? � Details of one of the middle sizes of Mercedes motor, the 176 horse-power type, apply very generally to the whole range; this size was in use up to and beyond the conclusion of hostilities, and it may still be regarded as characteristic of modern (1920) German practice. The engine is of the fixed vertical type, has six cylinders in line, not off-set, and is water-cooled. The cam shaft is carried in a special bronze casing, seated on the immediate top of the cylinders, and a vertical shaft is interposed between crankshaft and camshaft, the latter being driven by bevel gearing.