Science: Up There, Down Here

With the only refrigerated wind tunnel and the biggest low-pressure chamber in the U.S. aviation industry, Airesearch Co. of Inglewood, Calif. is developing equipment to send planes toward the stratosphere, whither the air battles of World War II are rapidly climbing. The refrigerated wind tunnel, an enormous doughnut 25 feet across, made of tubing three feet in diameter, contains a 300-m.p.h. wind that blows at temperatures down to -90° Fahrenheit.

The low-pressure chamber, 11 ft. in diameter and 45 ft. long (it will hold the fuselage of any pursuit ship or test segments of...

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