NASA Ames Aeromechanics Branch Chief Bill Warmbrodt talks about the NASA Ames Research Center's Wind Tunnels -- including the world's largest Wind Tunnel.
A Wind Tunnel is a tool used in aerodynamic research to study the effect of air moving past solid objects. wind tunnel consists of a closed tubular passage with the object under test mounted in the middle. A powerful fan system moves air past the object; the fan must have straightening vanes to smooth the airflow. The test object is instrumented with a sensitive balance to measure the forces generated by airflow; or, the airflow may have smoke or other substances injected to make the flow lines around the object visible.
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