This laboratory contains a small wind tunnel for calibrating hot wire probes, a closed-return wind tunnel with a 17 by 24 inch test section, and an open-return wind tunnel with an 18 by 36 inch test section. The two larger tunnels both have maximum air velocities of about 90 miles per hour with turbulence levels between 1 percent and 2 percent. The wind tunnels are used for instructional purposes in upper-level undergraduate and graduate courses such as Boundary Layer Theory, Aerodynamics, and Flow-induced Vibrations and in research projects such as the investigation of flow-induced vibrations of closely spaced cylinders.