Through a partnership between NASA, Old Dominion University and Florida State University, students in a response surface methodology (RSM) course set out to improve the performance of NASCAR Winston Cup race cars. Race car teams often use ad-hoc approaches to set up experiments, which cost time and money and may not even ield useful results. Many organizations rely on design of experiments (DOE)—a powerful tool that efficiently supports simultaneous analysis of multiple factors—to improve the quality of their products. The RSM class created a DOE and used Minitab Statistical Software to find factor settings that optimize the results.
Challenge: Four factors were identified that could affect a race car’s aerodynamic efficiency: front and rear car height, yaw angle (the angle the car center line makes with air stream) and radiator grille coverage. The class neededto design an experiment using these factors, run the experiment using the ODU Langley Full-Scale Wind Tunnelat Langley Air Force Base, and analyze the results to determine which factor settings minimize the front coefficient of lift, the upward force due to the flow of air over the car. Read further on NASCAR
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