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时间: 2019年12月13日 22:04

CHAPTER I � � There is so much overlapping in the crowded story of the first years of successful power-driven flight that at this point it is advisable to make a concise chronological survey of the chief events of the period of early development, although much of this is of necessity recapitulation. The story begins, of course, with Orville Wright鈥檚 first flight of 852 feet at Kitty Hawk on December 19th, 1903. The next event of note was Wright鈥檚 flight of 11.12 miles in 18 minutes 9 seconds at Dayton, Ohio, on September 26th, 1905, this being the first officially recorded flight. On October 4th of the same year, Wright flew 20.75 miles in 33 minutes 17 seconds, this being the first flight of over 20 miles ever made. Then on September 14th, 1906, Alberto Santos-Dumont made a flight of eight seconds on the second heavier-than-air machine he had constructed. It was a big box-kite-like machine; this was the second power-driven aeroplane in Europe to fly, for although Santos-Dumont鈥檚 first machine produced in 1905 was reckoned an unsuccessful design, it had actually got off the ground for brief periods. Louis Bleriot came into the ring on April 5th, 1907, with a first flight of 6 seconds on a Bleriot monoplane, his eighth but first successful construction. � Of the unsupported myths鈥攗nsupported, that is, by even a shadow of probability鈥攖here is no end. Although Latin legend approaches nearer to fact than the Greek in some cases, in others it shows a disregard for possibilities which renders it of far less account. Thus Diodorus of Sicily relates that one Abaris travelled round the world on an arrow of gold, and Cassiodorus and Glycas and their like told of mechanical birds that flew and sang and even laid eggs. More credible is the story of Aulus Gellius, who in his Attic Nights tells how Archytas, four centuries prior to the opening of the Christian era, made a wooden pigeon that actually flew by means of a mechanism of balancing weights and the breath of a mysterious spirit hidden within it. There may yet arise one credulous enough to state that the mysterious spirit was precursor of the internal combustion engine, but, however that may be, the pigeon of Archytas almost certainly existed, and perhaps it actually glided or flew for short distances鈥攐r else Aulus Gellius was an utter liar, like Cassiodorus and8 his fellows. In far later times a certain John Muller, better known as Regiomontanus, is stated to have made an artificial eagle which accompanied Charles V. on his entry to and exit from Nuremberg, flying above the royal procession. But, since Muller died in 1436 and Charles was born in 1500, Muller may be ruled out from among the pioneers of mechanical flight, and it may be concluded that the historian of this event got slightly mixed in his dates. 四虎影最新网站2019 好吊色96sao.cσm 偷偷鲁青春草原视频 伊人大杳焦在久久综合 Anyway, Charlie and I installed them again. Around this time, I read an article about these two BenFranklin stores up in Minnesota that had gone to self-servicea brand-new concept at the time. I rode thebus all night long to two little towns up therePipestone and Worthington. They had shelves on the sideand two island counters all the way back. No clerks with cash registers around the store. Just checkoutregisters up front. I liked it. So I did that too. � � Our kids just shrug it off. I don't think it has affected our kids too much because it all happened graduallyto them, and they were raised so basically, with good fundamental values. HELEN WALTON: