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National Diagnostic Facility  Powered by a 2000 horsepower electric motor driving a variable pitch fan, the National Diagnostic Facility (NDF) can reach speeds of nearly 360 mph (160m/s). The NDF has several unique features. Among these are turning vanes which double as heat exchangers, with cold water running through them from a ice storage unit, the vanes in turns one and three cool the air passing over them to keep the air temperature within the tunnel constant. The turning vanes in turn two are filled with a sound absorbing material to reduce noise within the tunnel that may effect the data being take in the test section. The test section itself is a modular design made almost completely out of aluminum. This design and the test section's long length allow it to be modified and be useful for a wider variety of experiments than most university wind tunnels. Since going online in February of 1994, two different models have been installed in the NDF. Both these experiments take advantage of the NDF's unique features. Images Experiments
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