人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

 找回密码
 立即注册

QQ登录

只需一步,快速开始

微信登录

微信扫码,快速开始

[SAT写作] SAT写作素材之莱特兄弟

[复制链接]

  下面是一篇介绍莱特兄弟的SAT写作素材,这篇SAT写作素材着重介绍了莱特兄弟发明飞机的过程,在这个过程中遇到的困难和解决的途径等信息。这是一个非常经典的关于成功和科技方面的例子,下面我们一起来看看莱特兄弟的信息吧。

  莱特兄弟

  Key words: inventor

  The Wright Brothers

  Aviation pioneers, inventors. Wilbur was born near Millville, Indiana, and Orville was born in Dayton, Ohio. The sons of a minister of the United Brethren Church, the Wright brothers showed mechanical genius from boyhood, although neither graduated from high school.

  In 1892 they opened a bicycle sales and repair shop in Dayton and soon were making and selling their own bicycles. Reading about experiments with gliders spurred their interest in flight, and they built their first glider in 1899, a biplane kite with wings that could be twisted mechanically.

  The brothers made their first trip to Kitty Hawk, North Carolina in 1900 to conduct glider experiments on the sand hills there.

  Back in Dayton they built the first wind tunnel and prepared their own tables of lift-pressures for various wing surfaces and wind speeds. They also built a powerful four-cylinder engine and an efficient propeller, and in September 1903 they returned to Kitty Hawk. Bad weather delayed the testing of this aircraft until December 17, 1903, when Orville piloted it on a flight of 12 seconds and 120 feet; Wilbur flew later in the day, staying aloft for 59 seconds to cover 852 feet.

回复

使用道具 举报

小黑屋/人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

Powered by 5wangxiao

© 2007-2021 5wangxiao.Com Inc.

快速回复 返回顶部 返回列表