The Windshear Rolling Road Wind Tunnel in Concord, North Carolina, is a full-scale commercial wind tunnel conceived primarily as a facility to serve the various motorsports communities, although it has already expanded beyond that base into production car and truck testing. The wind tunnel is a 3/4-open-jet, closed-return design with a 16.7 m₂ nozzle, a wide-belt moving ground plane, and a top speed of 80 m/s (180 mph). This paper describes the project history and design philosophy of the wind tunnel, commissioning results, and an overview of the force measurement methods on the wide-belt rolling road. Some results of a recently completed correlation program are presented, along with performance validation results that include repeatability and reproducibility as well as an assessment of boundary corrections.
The Windshear Rolling Road Wind Tunnel
Walter, J., Bordner, J., Nelson, B., and Boram, A., "The Windshear Rolling Road Wind Tunnel," SAE Int. J. Passeng. Cars - Mech. Syst. 5(1):289-303, 2012, doi:10.4271/2012-01-0300.