Wind Tunnels at NASA's Ames Research Center

Bill Warmbrodt, Aeromechanics Branch Chief at NASA's Ames Research Center, talks about the center's wind tunnels, which includes 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. It consists of a closed tubular passage with the object under test mounted in the middle. A powerful fan system moves air past the object, and 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. For your chance to win a trip to a NASA Research Center, enter here.