NASA's Transonic Wind Tunnel. Engineer unlatching a door built into the guide vanes of NASA's 16-foot Transonic Wind Tunnel. This wind tunnel wsa built in 1939 and operates across the speed of sound (transonically). The air in the test section travels from around 150-1000 mph. The guide vanes cut across each cylindrical tube at a 45 degree angle. Similar sets of vanes at the three other corners of the wind tunnel turn the air uniformly as it rushes through the 1000-foot enclosed tube. Without the guide vanes,the air would pile up in dense masses along the outside curves,causing turbulent eddies that would interfere with the wind tunnel tests. Photographed at NASA's Langley Research Center,Virginia,USA | |
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Credit: | Science Photo Library / Taub, Bill / NASA |
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