The sliding-block wind tunnel has been a teaching staple at Illinois Tech for many decades. The tunnel is a blowdown-to-atmosphere design with a sliding block that can adjust the Mach number between 1.5 and 4, with test section cross-section of 4 in x 4 in (10 cm x 10 cm). The tunnel can operate for approximately 30 seconds at a time. It is currently being refurbished to be utilized for high-speed flow research. Updates include a pneumatic inlet control valve to regulate the stagnation pressure,  a newly designed diffuser section and a high-speed particle image velocimetry (PIV) system. 

The Andrew Fejer Wind Tunnel is a closed-loop recirculating wind tunnel with a 2 foot x 2 foot (61 cm x 61 cm) test section and a maximum free-stream velocity of 30 meters per second. It has the unique capability to generate both longitudinal and transverse gusts in the test section. This provides the ideal environment to test the influence of gusts on aerodynamics bodies such as airfoils and delta wings.