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12-Foot Pressure Wind Tunnel

This 1,000-horsepower propeller dynamometer was used in the 12-Foot Pressure Wind Tunnel to test the performance and efficiency of propeller and spinner designs at speeds up to 6,600 revolutions per minute. An optional gearbox (not shown) permitted dual, counter-rotating propellers to be tested.

 

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Credit: NASA

Image Number: A-16034

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Uploaded on August 1, 2013
Taken on October 8, 2011