Word: compressors
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...equipment. Only 22½ ft. long, it weighs 13,000 Ibs. and can be carried in a C-119 Flying Boxcar. On the job, it can take on up to 40,000 Ibs. of dirt or water as ballast, do the job of a bulldozer, power shovel, or air compressor capable of running 12 pneumatic jackhammers. Fairchild, which will deliver the first model to the Army next December, hopes eventually to cut the price to $25,000 in quantity production, make a big dent in the construction-equipment market...
...axial-flow engine draws in air with a series of compressor blades which send the air to the combustion chamber in a direct line. A centrifugal-flow jet draws in the air with fewer but larger blades, and throws the air out around the circumference of the compressor on its way to the combustion chamber. Since an axial-flow engine has a smaller diameter, it is easier to fit into planes...
...talk fast enough to suit University of Illinois Professor Grant Fairbanks. The ear, says Fairbanks, is quicker than the tongue, and words can be understood faster than they can be spoken. Determined to work the human ear to capacity, Fairbanks and his associates have invented a "Time Compressor," a tape recorder that can take brief samples of speech, patch them together electronically and get a result that hardly alters the sound of the original words. By changing the size of the samples and varying the speed of the recording, speech can be compressed as much as 70% before it becomes...
...result of the project was the elimination of surge in a centrifugal compressor produced a few years ago. The improvement of jet engine compressors is tremendously important because of the vast amount of work the engine does to drive the compressor compared with the work done in driving the airplane forward. Thus, a one per cent increase in rotor efficiency means a five percent increase in total engine efficiency...
...apparatus used in the project, though originally provided by Pratt and Whitney, is now the property of the University. The supersonic tunnel has been used in a variety of different ways, such as the study of super-sonic shock waves.The axial flow compressor shown here supplies volumes of air up to 30,000 cubic feet per minute to the wind tunneis. Besides the axial flow compressor, there is a centrifugal compressor. Axial flow has largely taken the place of centrifugal flow on the power plants that drive modern jet aircraft. The large size of the above compressor can be observed...