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Brooklands was a centre for British aircraft manufacturing for much of the twentieth century, but in addition some very special research and development work was carried on there after 1945.
One remarkablestructure which started operation in 1948 and still exists today is the Stratosphere Chamber. Its purpose was to simulate at ground level the extreme conditions that fast and high-flying aircraft might meet. It could be operated at air pressure only 5% of that on the ground, which is equivalent to flying at 70,000 feet, or over 21,000 metres. It could also test a temperature range from -65°C to + 45°C. In its 33-year working life, the Chamber was used for many trials, some of which had nothing to do with aircraft. For example, one test programme reproduced icing conditions on a trawler in the Arctic.
Today Brooklands is a museum, and one of its priorities is to maintain its aviation traditions. It takes pride in restoring aircraft, particularly if they were built in the nearby factory. The biggest single task of that sort is still continuing - the painstaking restoration of a Wellington bomber that was recovered in 1985 from the bottom of Loch Ness in Scotland.
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n.加；加法；附加物 (初中英语单词)
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