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第 29 课 · 气垫船 Lesson 29 · The Hovercraft

本世纪以来,许多奇特的新型交通工具相继问世,其中最为奇特的,或许便是气垫船。

Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft.

1953年,一位年届五十的前电子工程师——克里斯托弗·科克雷尔,彼时已转行在诺福克水域从事船舶建造——将他多年来苦心钻研的一个构想提交给英国政府和工业界。

In 1953, a former electronics engineer in his fifties, Christopher Cockerell, who had turned to boat-building on the Norfolk Broads, suggested an idea on which he had been working for many years to the British Government and industrial circles.

那是一种让飞行器骑行在"垫子"上的构想——这里的垫子是低压空气形成的气垫,外围以一圈高压气流幕帘环绕。

It was the idea of supporting a craft on a 'pad', or cushion, of low-pressure air, ringed with a curtain of higher pressure air.

此后,人们一直难以判定这种飞行器究竟应归属于船舶、飞机还是陆地交通工具之列——因为它是某种介于船与飞机之间的特殊存在。

Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles--for it is something in between a boat and an aircraft.

作为一名造船者,科克雷尔一直试图找到解决波浪阻力问题的方案——正是这种波浪阻力耗费了水面船舶相当大的动力,并限制了其航速。

As a shipbuilder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface ship's power and limits its speed.

他的解答是:通过让飞行器骑行于一层不超过一两英尺厚的气垫之上,从而将船体从水中托起。

His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick.

这是通过飞行器底部大量的环形喷气口来实现的。

This is done by a great number of ring-shaped air jets on the bottom of the craft.

因此,它确实"飞行",但却无法飞得更高——它的运作取决于它所行驶的那个表面,无论是水面还是地面。

It 'flies', therefore, but it cannot fly higher--its action depends on the surface, water or ground, over which it rides.

1959年,在索伦特海峡进行的首次测试引发了轰动。

The first tests on the Solent in 1959 caused a sensation.

气垫船先是飞越水面,继而登上海滩,爬上沙丘,最终停落在一条公路上。

The hovercraft travelled first over the water, then mounted the beach, climbed up the dunes, and sat down on a road.

此后,气垫船横渡英吉利海峡,平稳地越过海浪——而海浪对它来说毫无问题。

Later it crossed the Channel, riding smoothly over the waves, which presented no problem.

自那以来,各种型号的气垫船相继出现,并投入了定期运营服务。

Since that time, various types of hovercraft have appeared and taken up regular service.

气垫船在通讯设施落后的广大地区(如非洲或澳大利亚)尤为有用;它可以成为"飞翔的水果篮",将香蕉从种植园运往港口;巨型气垫船客轮可以横跨大西洋;未来的铁路或许就是"气垫列车"——依靠气垫悬行于单轨之上而从不触及轨道,时速高达300英里——种种可能,似乎无穷无尽。

The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia; it can become a 'flying fruit-bowl', carrying bananas from the plantations to the ports; giant hovercraft liners could span the Atlantic; and the railway of the future may well be the 'hovertrain', riding on its air cushion over a single rail, which it never touches, at speeds, up to 300 m.p.h.--the possibilities appear unlimited.