The Parts of a Wind Tunnel
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courtesy of NASA's Observatorium. The text, images,
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(with exceptions noted.)
A wind tunnel is really a fairly simple device. Most designs feature each of the five components described below. The overall design creates high-speed, low-turbulence airflow through the test section and allows researchers to measure the resulting forces on the model being tested.
Settling Chamber - The purpose of the settling chamber is to straighten the airflow.
Contraction Cone - The contraction cone takes a large volume of low-velocity air and reduces it to a small volume of high-velocity air without creating turbulence.
Test Section - The test section is where the test article and sensors are placed.
Drive Section - The drive section provides the force that causes the air to move through the wind tunnel.
Wind tunnels can be open- or closed-loop. The design influences whether or not the air is recirculated in the tunnel.
|For more resources about wind tunnels, browse
these other excellent webpages at NASA's Observatorium.|
[ The Wind Tunnel ]