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时间: 2019年12月13日 02:30

Exhibited in the Paris Aero Exhibition of 1912, the Laviator two-stroke cycle engine, six-cylindered, could be operated either as a radial or as a rotary engine, all its pistons acting on a single crank. Cylinder dimensions of this engine were 3.94 inches bore by 5.12 inches stroke, and a power output of 50 horse-power454 was obtained when working at a rate of 1,200 revolutions per minute. Used as a radial engine, it developed 65 horse-power at the same rate of revolution, and, as the total weight was about 198 lbs., the weight of about 3 lbs. per horse-power was attained in radial use. Stepped pistons were employed, the annular space between the smaller or power piston and the walls of the larger cylinder being used as a charging pump for the power cylinder situated 120 degrees in rear of it. The charging cylinders were connected by short pipes455 to ports in the crank case which communicated with the hollow crankshaft through which the fresh gas was supplied, and once in each revolution each port in the case registered with the port in the hollow shaft. The mixture which then entered the charging cylinder was transferred to the corresponding working cylinder when the piston of that cylinder had reached the end of its power stroke, and immediately before this the exhaust ports diametrically opposite the inlet ports were uncovered; scavenging was thus assisted in the usual way. The very desirable feature of being entirely valveless was accomplished with this engine, which is also noteworthy for exceedingly compact design. When all this had been done she became more easy in her mind. She talked principally about her nephew. 鈥淒on鈥檛 scold him,鈥?she said, 鈥渋f he is volatile, and continually takes things up only to throw them down again. How can he find out his strength or weakness otherwise? A man鈥檚 profession,鈥?she said, and here she gave one of her wicked little laughs, 鈥渋s not like his wife, which he must take once for all, for better for worse, without proof beforehand. Let him go here and there, and learn his truest liking by finding out what, after all, he catches himself turning to most habitually 鈥?then let him stick to this; but I daresay Ernest will be forty or five-and-forty before he settles down. Then all his previous infidelities will work together to him for good if he is the boy I hope he is. Col. Anything; anything; the cold ride has sharpened my appetite; but a good blaze like this cheers the heart, and gives me courage to face even the pigs, Miss Ratty! Ancien Avou茅 de Londres, 304 Early in 1914 it became known that the experimental work of Edward Busk鈥攚ho was so lamentably killed during an experimental flight later in the year鈥攆ollowing upon the researches of Bairstow and others had resulted in the production at the Royal Aircraft Factory at Farnborough of a truly automatically stable aeroplane. This was the 鈥楻.E.鈥?(Reconnaissance Experimental), a development of the B.E. which has already been referred to. The remarkable feature of this design was that there was no particular device to which one could point out as the cause of the stability. The stable result was attained simply by detailed design of each part of the aeroplane, with due regard to its relation to, and effect on, other parts in the air. Weights and areas were so nicely arranged that under practically any conditions the machine tended to right itself. It did not, therefore, claim to be a machine which it was impossible to upset, but one which if left to itself would tend to right itself from whatever direction a gust might come. When the principles were extended to the 鈥楤.E. 2c鈥?type (largely used at the outbreak of the War) the latter machine, if the engine were switched off at a height of not less than 1,000 feet above the ground, would after a few moments assume its correct gliding angle and glide down to the ground. Horatia. All that woman ever attempted I am ready to perform. 伊人久久大香蕉超碰3,伊人大香线蕉精品在线,大香蕉中文字幕 � You went to the office? And you saw Minnie's letter? The selfishness and egotism of the man are incredible! thought Algernon, looking at Lord Seely. "Not one word of sympathy with me! Not a syllable to show that my feelings are worthy of any consideration whatever. Pompous little ass!" Then he said, very gravely and quietly, "I think, my lord, that you have forgotten what I said to you in the hurried note I sent upstairs, about appealing to you on behalf of another person." 鈥淏ien, m鈥檚ieu,鈥?said Auguste. It was a beautiful evening. The sun was just veiling his face behind the western hills, illuminating the sky with glory, when suddenly they were attracted by the sweet strains of a French song in the distance.