论文部分内容阅读
美国加州空气动力学工程师艾德拉在朋友的帮助下,经过数年的努力,对大气摩擦系数作了精确的计算,从而设计出一种新型投掷玩具——飞圈。这种飞圈由塑料和橡胶制成,呈圆形,象本世纪初妇女跳霍拉舞时用的裙撑。产品上市后,颇受孩子们喜欢。它的投掷方法和“飞碟”一样,但飞行曲线与“飞碟”不同,能飞得更远。即使一个很蹩脚的投掷者也可抛掷25码之遥。一个专业投掷者,如世界纪录创造
With the help of friends, California aerodynamic engineer Adra, after years of hard work, made an accurate calculation of the coefficient of atmospheric friction to design a new type of throwing toy - the flying ring. The fly-ring is made of plastic and rubber in the shape of a circle, like the waffle used by women in the early twentieth century to dance to Hora. After the product is listed, popular children like it. Its method of throwing is the same as flying saucer, but the flight curve is different from the flying saucer and can fly farther. Even a very poor thrower can throw 25 yards away. A professional thrower, like the world record created