Aerodynamic undertray design for formula SAE Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/nz806387x

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  • Aerodynamic improvements in automotive racing can have a significant effect on vehicle performance. Recent developments in Formula SAE (Society of Automotive Engineers) have included the design and implementation of aerodynamic devices such as inverted wings and undertrays to improve performance. In this work the literature of undertray technology is presented and a design of an undertray for the Global Formula Racing car is developed. Computational Fluid Dynamics simulations are used to iterate the design and discover the effect on the downforce developed of various vehicle parameters such as speed, ride height and roll. Predicted performance is then tested using on-track data and statistical analysis is preformed on lap times from a back-to-back comparison to identify the gain of the undertray. The comparison shows a 31% error from predicted to measured downforce, with a statistically significant 1% improvement in lap times.
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